1
|
Ahsan S, Win TT, Aye SN, Than NN. The role of circular RNAs (circRNAs) as a prognostic factor in lung cancer: a meta-analysis. BMC Cancer 2024; 24:988. [PMID: 39123167 PMCID: PMC11316314 DOI: 10.1186/s12885-024-12704-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Accepted: 07/26/2024] [Indexed: 08/12/2024] Open
Abstract
BACKGROUND Lung cancer is a leading cause of cancer-related death worldwide. Among various histological types of lung cancer, majority are non-small cell lung cancer (NSCLC) which account for > 80%. Circular RNAs (circRNAs) are widely expressed in various cancers including lung cancer and implicated in tumourigenesis and cancer progression. This study aimed to systematically evaluate the prognostic values of circRNAs in lung cancer. METHODS A systematic literature search was done in PubMed, Embase, and MEDLINE databases to select the eligible studies which reported the association between the expression of circRNAs and overall survival (OS) or disease-free survival (DFS) in histopathologically diagnosed lung cancer patients. The pooled hazard ratio (HR) and 95% confidence interval (CI) were assessed to determine the prognostic significance of circRNAs. RESULTS A total of 43 studies were eligible for this meta-analysis (MA). 39 different types of circRNAs were reported: 28 showing upregulating and 11 showing downregulating action in lung cancer. High expression of circRNAs with upregulating action in lung cancer was associated with worse prognosis and poor OS (HR 1.93, 95% CI [1.61-2.33], p < 0.00001). High expression of circRNAs with downregulating action in lung cancer was associated with favorable OS and prognosis (HR 0.73, 95% CI [0.58-0.94], p = 0.01). However, there was no statistically significant association between high and low expression of both upregulating and downregulating circRNAs and DFS (HR 1.44, 95% CI [0.92-2.24], p = 0.11). CONCLUSIONS This MA confirmed the pivotal role of circRNAs as important prognostic biomarkers for lung cancer, especially NSCLC. High expression of upregulating circRNAs is associated with poor prognosis; however, high expression of downregulating circRNAs is associated with favorable prognosis. Therefore, downregulatory action of circRNAs should be considered a promising treatment in the management of lung cancer, especially NSCLC.
Collapse
Affiliation(s)
- Sanabil Ahsan
- BMed Science, School of Medicine, IMU University, 126, Jalan Jalil Perkasa 19, Bukit Jalil, Kuala Lumpur, 57000, Malaysia
- Warwick Medical School, The University of Warwick, Coventry, CV4 7AL, UK
| | - Thin Thin Win
- Department of Pathology and Pharmacology, School of Medicine, IMU University, 126, Jalan Jalil Perkasa 19, Bukit Jalil, Kuala Lumpur, 57000, Malaysia.
| | - Saint Nway Aye
- Department of Pathology and Pharmacology, School of Medicine, IMU University, 126, Jalan Jalil Perkasa 19, Bukit Jalil, Kuala Lumpur, 57000, Malaysia
| | - Nan Nitra Than
- Department of Community Medicine, Faculty of Medicine, Manipal University College Malaysia, Melaka, Malaysia
| |
Collapse
|
2
|
Liu Z, Li W, Wang Z, Yang Q, Chen L, Chen W, Qu X. EIF4A3-Induced CircDHTKD1 regulates glycolysis in non-small cell lung cancer via stabilizing PFKL. J Cell Mol Med 2024; 28:e18465. [PMID: 39022816 PMCID: PMC11255402 DOI: 10.1111/jcmm.18465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 05/14/2024] [Accepted: 05/17/2024] [Indexed: 07/20/2024] Open
Abstract
Lung cancer (LC) is one of the malignancies with the highest incidence and mortality in the world, approximately 85% of which is non-small cell lung cancer (NSCLC). Circular RNAs (circRNAs) exert multiple roles in NSCLC occurrence and development. The sequencing results in previous literature have illustrated that multiple circRNAs exhibit upregulation in NSCLC. We attempted to figure out which circRNA exerts an oncogenic role in NSLCL progression. RT-qPCR evaluated circDHTKD1 level in NSCLC tissue specimens and cells. Reverse transcription as well as RNase R digestion assay evaluated circDHTKD1 circular characterization in NSCLC cells. FISH determined circDHTKD1 subcellular distribution in NSCLC cells. Loss- and gain-of-function assays clarified circDHTKD1 role in NSCLC cell growth, tumour growth and glycolysis. Bioinformatics and RIP and RNA pull-down assessed association of circDHTKD1 with upstream molecule Eukaryotic initiation factor 4A-III (EIF4A3) or downstream molecule phosphofructokinase-1 liver type (PFKL) and insulin-like growth factor 2 mRNA binding protein 2 (IGF2BP2) in NSCLC cells. Rescue assays assessed regulatory function of PFKL in circDHTKD1-meidated NSCLC cellular phenotypes. CircDHTKD1 exhibited upregulation and stable circular nature in NSCLC cells. EIF4A3 upregulated circDHTKD1 in NSCLC cells. CircDHTKD1 exerted a promoting influence on NSCLC cell malignant phenotypes and tumour growth. CircDHTKD1 exerted a promoting influence on NSCLC glucose metabolism. CircDHTKD1 exerts a promoting influence on NSCLC glucose metabolism through PFKL upregulation. RIP and RNA pull-down showed that circDHTKD1 could bind to IGF2BP, PFKL could bind to IGF2BP2, and circDHTKD1 promoted the binding of PFKL to IGF2BP2. In addition, RT-qPCR showed that IGF2BP2 knockdown promoted PFKL mRNA degradation, suggesting that IGF2BP2 stabilized PFKL in NSCLC cells. CircDHTKD1 exhibits upregulation in NSCLC. We innovatively validate that EIF4A3-triggered circDHTKD1 upregulation facilitates NSCLC glycolysis through recruiting m6A reader IGF2BP2 to stabilize PFKL, which may provide a new direction for seeking targeted therapy plans of NSCLC.
Collapse
Affiliation(s)
- Zhenghua Liu
- Department of Thoracic SurgeryThe First Hospital of China Medical UniversityShenyangLiaoningChina
| | - Wenya Li
- Department of Thoracic SurgeryThe First Hospital of China Medical UniversityShenyangLiaoningChina
| | - Ziyi Wang
- Department of Thoracic SurgeryThe First Hospital of China Medical UniversityShenyangLiaoningChina
| | - Qiwei Yang
- Department of Thoracic SurgeryThe First Hospital of China Medical UniversityShenyangLiaoningChina
| | - Liang Chen
- Department of Thoracic SurgeryThe First Hospital of China Medical UniversityShenyangLiaoningChina
| | - Weiyang Chen
- Department of Thoracic SurgeryThe First Hospital of China Medical UniversityShenyangLiaoningChina
| | - Xiaohan Qu
- Department of Thoracic SurgeryThe First Hospital of China Medical UniversityShenyangLiaoningChina
| |
Collapse
|
3
|
Karami Fath M, Pourbagher Benam S, Kouhi Esfahani N, Shahkarami N, Shafa S, Bagheri H, Shafagh SG, Payandeh Z, Barati G. The functional role of circular RNAs in the pathogenesis of retinoblastoma: a new potential biomarker and therapeutic target? Clin Transl Oncol 2023:10.1007/s12094-023-03144-2. [PMID: 37000290 DOI: 10.1007/s12094-023-03144-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 03/01/2023] [Indexed: 04/01/2023]
Abstract
Retinoblastoma (RB) is a common cancer in infants and children. It is a curable disease; however, a delayed diagnosis or treatment makes the treatment difficult. Genetic mutations have a central role in the pathogenesis of RB. Genetic materials such as RNAs (coding and non-coding RNAs) are also involved in the progression of the tumor. Circular RNA (circRNA) is the most recently identified RNA and is involved in regulating gene expression mainly through "microRNA sponges". The dysregulation of circRNAs has been observed in several diseases and tumors. Also, various studies have shown that circRNAs expression is changed in RB tissues. Due to their role in the pathogenesis of the disease, circRNAs might be helpful as a diagnostic or prognostic biomarker in patients with RB. In addition, circRNAs could be a suitable therapeutic target to treat RB in a targeted therapy approach.
Collapse
Affiliation(s)
- Mohsen Karami Fath
- Department of Cellular and Molecular Biology, Faculty of Biological Sciences, Kharazmi University, Tehran, Iran
| | | | | | - Negar Shahkarami
- School of Allied Medical Sciences, Fasa University of Medical Sciences, Fasa, Iran
| | - Shahriyar Shafa
- School of Medicine, Kerman University of Medical Sciences, Kerman, Iran
| | - Hossein Bagheri
- Faculty of Medicine, Islamic Azad University of Tehran Branch, Tehran, Iran
| | | | - Zahra Payandeh
- Division Medical Inflammation Research, Department of Medical Biochemistry and Biophysics, Karolinska Institute, Stockholm, Sweden
| | | |
Collapse
|
4
|
Lv X, Yang H, Zhong H, He L, Wang L. Osthole exhibits an antitumor effect in retinoblastoma through inhibiting the PI3K/AKT/mTOR pathway via regulating the hsa_circ_0007534/miR-214-3p axis. PHARMACEUTICAL BIOLOGY 2022; 60:417-426. [PMID: 35175172 PMCID: PMC8856102 DOI: 10.1080/13880209.2022.2032206] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 12/29/2021] [Accepted: 01/16/2022] [Indexed: 06/14/2023]
Abstract
CONTEXT Osthole shows antitumor effects in various tumours. Studies describing the effect of osthole on retinoblastoma (RB) are rare. OBJECTIVE This study investigates the antitumor activity of osthole on RB. MATERIALS AND METHODS RB cells were treated with different concentrations of osthole and then subjected to cell viability, colony formation, apoptosis, and western blot assays. The expression of hsa_circ_0007534 in RB tissues was determined by qRT-PCR. Hsa_circ_0007534 overexpression plasmid (oe-circ_0007534), miR-214-3p mimics and negative controls were transfected into RB cells to investigate cell viability. Athymic nude mice were injected with Y-79 cells to establish subcutaneous RB models. These mice were treated with osthole (0.5 mmol/kg) or corn oil for 36 days. Tumour tissues were collected for further analysis. RESULTS Osthole inhibited cell viability of RB cells with an IC50 of 200 μM for 24 h treatment and 120 μM for 48 h treatment, respectively. Hsa_circ_0007534 was increased significantly in RB tissues as compared to the matched nontumor tissues (p < 0.001). Oe-circ_0007534 counteracted the inhibitory effect of osthole on cell viability and colony numbers of Y-79 cells (p < 0.01). In vivo experiments indicated osthole significantly decreased the expression of hsa_circ_0007534 (p < 0.01) and increased the level of miR-214-3p in vivo. Furthermore, as compared to the control, osthole decreased the ratios of p-PI3K/PI3K, p-AKT/AKT and p-mTOR/mTOR (p < 0.01). However, hsa_circ_0007534 overexpression reversed the effect of osthole on the PI3K/AKT/mTOR pathway. DISCUSSION AND CONCLUSIONS Osthole exhibited an antitumour effect in RB, providing a scientific basis for further research and clinical applications of osthole in RB treatment.
Collapse
Affiliation(s)
- Xiufang Lv
- Department of Ophthalmology, Shenzhen Children’s Hospital, Shenzhen, Guangdong, China
| | - Haojiang Yang
- Department of Ophthalmology, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital, Shenzhen, Guangdong, China
| | - Hui Zhong
- Department of Ophthalmology, Shenzhen Children’s Hospital, Shenzhen, Guangdong, China
| | - Li He
- Department of Ophthalmology, Shenzhen Children’s Hospital, Shenzhen, Guangdong, China
| | - Li Wang
- Department of Ophthalmology, Shenzhen Children’s Hospital, Shenzhen, Guangdong, China
| |
Collapse
|
5
|
Liu B, Dong C, Chen Q, Fan Z, Zhang Y, Wu Y, Cui T, Liu F. Circ_0007534 as new emerging target in cancer: Biological functions and molecular interactions. Front Oncol 2022; 12:1031802. [PMID: 36505874 PMCID: PMC9730518 DOI: 10.3389/fonc.2022.1031802] [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: 08/30/2022] [Accepted: 11/08/2022] [Indexed: 11/25/2022] Open
Abstract
Circular RNA (circRNAs), an important member of the non-coding RNA (ncRNA) family, are widely expressed in a variety of biological cells. Owing to their stable structures, sequence conservations, and cell- or tissue-specific expressions, these RNA have become a popular subject of scientific research. With the development of sequencing methods, it has been revealed that circRNAs exert their biological function by sponging microRNAs (miRNAs), regulating transcription, or binding to proteins. Humans have historically been significantly impacted by various types of cancer. Studies have shown that circRNAs are abnormally expressed in various cancers and are involved in the occurrence and development of malignant tumors, such as tumor cell proliferation, migration, and invasion. As one of its star molecules, circ_0007534 is upregulated in colorectal, cervical, and pancreatic cancers; is closely related to the occurrence, development, and prognosis of tumors; and is expected to become a novel tumor marker and therapeutic target. This article briefly reviews the expression and mechanism of circ_0007534 in malignant tumors based on the domestic and foreign literature.
Collapse
|
6
|
Kouhsar M, Kashaninia E, Mardani B, Rabiee HR. CircWalk: a novel approach to predict CircRNA-disease association based on heterogeneous network representation learning. BMC Bioinformatics 2022; 23:331. [PMID: 35953785 PMCID: PMC9367077 DOI: 10.1186/s12859-022-04883-9] [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: 03/13/2022] [Accepted: 08/08/2022] [Indexed: 11/10/2022] Open
Abstract
Background Several types of RNA in the cell are usually involved in biological processes with multiple functions. Coding RNAs code for proteins while non-coding RNAs regulate gene expression. Some single-strand RNAs can create a circular shape via the back splicing process and convert into a new type called circular RNA (circRNA). circRNAs are among the essential non-coding RNAs in the cell that involve multiple disorders. One of the critical functions of circRNAs is to regulate the expression of other genes through sponging micro RNAs (miRNAs) in diseases. This mechanism, known as the competing endogenous RNA (ceRNA) hypothesis, and additional information obtained from biological datasets can be used by computational approaches to predict novel associations between disease and circRNAs.
Results We applied multiple classifiers to validate the extracted features from the heterogeneous network and selected the most appropriate one based on some evaluation criteria. Then, the XGBoost is utilized in our pipeline to generate a novel approach, called CircWalk, to predict CircRNA-Disease associations. Our results demonstrate that CircWalk has reasonable accuracy and AUC compared with other state-of-the-art algorithms. We also use CircWalk to predict novel circRNAs associated with lung, gastric, and colorectal cancers as a case study. The results show that our approach can accurately detect novel circRNAs related to these diseases. Conclusions Considering the ceRNA hypothesis, we integrate multiple resources to construct a heterogeneous network from circRNAs, mRNAs, miRNAs, and diseases. Next, the DeepWalk algorithm is applied to the network to extract feature vectors for circRNAs and diseases. The extracted features are used to learn a classifier and generate a model to predict novel CircRNA-Disease associations. Our approach uses the concept of the ceRNA hypothesis and the miRNA sponge effect of circRNAs to predict their associations with diseases. Our results show that this outlook could help identify CircRNA-Disease associations more accurately. Supplementary Information The online version contains supplementary material available at 10.1186/s12859-022-04883-9.
Collapse
Affiliation(s)
- Morteza Kouhsar
- BCB Lab, Department of Computer Engineering, Sharif University of Technology, Tehran, Iran
| | - Esra Kashaninia
- BCB Lab, Department of Computer Engineering, Sharif University of Technology, Tehran, Iran
| | - Behnam Mardani
- Department of Computer Science and Information Technology, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan, Iran
| | - Hamid R Rabiee
- BCB Lab, Department of Computer Engineering, Sharif University of Technology, Tehran, Iran.
| |
Collapse
|
7
|
Sang C, Rao D, Wu C, Xia Y, Si M, Tang Z. Role of circular RNAs in the diagnosis, regulation of drug resistance and prognosis of lung cancer (Review). Oncol Lett 2022; 24:302. [PMID: 35949591 PMCID: PMC9353231 DOI: 10.3892/ol.2022.13422] [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: 12/07/2021] [Accepted: 05/25/2022] [Indexed: 11/07/2022] Open
Abstract
Lung cancer is one of the most common malignant tumors in China and is the highest cause of mortality among male and female patients, both in urban and rural areas. A subset of patients with lung cancer only display chest tightness without any other obvious symptoms. This is because most symptoms do not manifest during the early stages of disease development. Consequently, most patients with lung cancer are diagnosed when the disease is in the advanced stages, when they are already unfit for surgical treatment. Furthermore, the prognosis of patients with lung cancer is poor. The 5-year survival rate of patients with stage IA lung cancer is 85%, compared with 6% in those with stage IV. This requires the development of strategies for early diagnosis, treatment and prognosis to improve the management of lung cancer. Circular RNAs (circRNAs) belong to a class of closed circular non-coding RNAs formed by reverse splicing of a precursor mRNA. These RNAs are highly stable, ubiquitously expressed, conserved, and show high specificity. CircRNAs regulate biological processes, such as the proliferation, differentiation and invasion of lung cancer cells. Therefore, they can be used as biomarkers for the early diagnosis and prognosis prediction of lung cancer, as well as novel targets for therapy design. In the present review, the biological characteristics and functions of circRNAs, as well as their application in the diagnosis, control of drug resistance and effect on the prognosis of patients with lung cancer, will be discussed.
Collapse
Affiliation(s)
- Chengpeng Sang
- Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases of Ministry of Education, Gannan Medical University, Ganzhou, Jiangxi 341000, P.R. China
| | - Dingyu Rao
- Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases of Ministry of Education, Gannan Medical University, Ganzhou, Jiangxi 341000, P.R. China
| | - Caixia Wu
- Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases of Ministry of Education, Gannan Medical University, Ganzhou, Jiangxi 341000, P.R. China
| | - Yao Xia
- Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases of Ministry of Education, Gannan Medical University, Ganzhou, Jiangxi 341000, P.R. China
| | - Maoyan Si
- Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases of Ministry of Education, Gannan Medical University, Ganzhou, Jiangxi 341000, P.R. China
| | - Zhixian Tang
- Department of Cardiothoracic Surgery, The First Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi 341000, P.R. China
| |
Collapse
|
8
|
Chen S, Hong K, Zhou L, Ran R, Huang J, Zheng Y, Xing M, Cai Y. Hsa_circRNA_0017620 regulated cell progression of non-small-cell lung cancer via miR-520a-5p/KRT5 axis. J Clin Lab Anal 2022; 36:e24347. [PMID: 35302673 PMCID: PMC8993624 DOI: 10.1002/jcla.24347] [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: 12/13/2021] [Revised: 01/27/2022] [Accepted: 03/05/2022] [Indexed: 11/24/2022] Open
Abstract
Background CircRNA is a very important functional RNA that plays an important role in the development and metabolism of cancer. However, the study of circRNA in NSCLC has not been fully elucidated. Methods The expression of hsa_circ_0017620, SFMBT2, miR‐520a‐5p, and KRT5 was determined using qRT‐PCR. KRT5, Twist1, E‐cadherin, and Ki67 protein expression were measured with western blot. The positive expression rates of Ki67 and Vimentin were determined by immunohistochemistry assay. 5‐Ethynyl‐2’‐deoxyuridine (EdU), colony formation, and MTT assays were used to assess cell proliferation. Transwell migration and invasion assay were applied to determine cell migration and invasion. Dual‐luciferase reporter and RNA immunoprecipitation assays were used to verify the relationship among hsa_circ_0017620, miR‐520a‐5p, and KRT5. The animal experiment was used to ensure the effects of hsa_circ_0017620 on tumor growth in vivo. Results Hsa_circ_0017620 was upregulated in NSCLC cells and tissues. MiR‐520a‐5p had been verified to be a target miRNA of hsa_circ_0017620 and KRT5 had been verified to be a target mRNA of miR‐520a‐5p in NSCLC cells. Knockdown of hsa_circ_0017620 inhibited cell proliferation, migration, and invasion in NSCLC cells, which was reversed by downregulating miR‐520a‐5p or upregulating KRT5 in NSCLC. Overexpression of hsa_circ_0017620 had opposite effects in NSCLC. Moreover, hsa_circ_0017620 silencing inhibited tumor growth in vivo of NSCLC. Conclusion In this study, we found that hsa_circ_0017620 played an important role in NSCLC progression. Hsa_circ_0017620 regulated cell proliferation, invasion, and migration through targeting miR‐520a‐5p/KRT5 axis in NSCLC, providing a potential new target for the treatment and diagnosis of NSCLC.
Collapse
Affiliation(s)
- Shan Chen
- Department of Oncology, The Central Hospital of Enshi Tujia and Miao Autonomous Prefecture, Enshi, China
| | - Kelin Hong
- Department of Cardiothoracic Surgery, The Central Hospital of Enshi Tujia and Miao Autonomous Prefecture, Enshi, China
| | - Long Zhou
- Department of Pulmonary and Critical Care Medicine, The Central Hospital of Enshi Tujia and Miao Autonomous Prefecture, Enshi, China
| | - Ruizhi Ran
- Department of Oncology, The Central Hospital of Enshi Tujia and Miao Autonomous Prefecture, Enshi, China
| | - Jinqi Huang
- Department of Cardiothoracic Surgery, The Central Hospital of Enshi Tujia and Miao Autonomous Prefecture, Enshi, China
| | - Yong Zheng
- Department of Cardiothoracic Surgery, The Central Hospital of Enshi Tujia and Miao Autonomous Prefecture, Enshi, China
| | - Maohui Xing
- Department of Oncology, The Central Hospital of Enshi Tujia and Miao Autonomous Prefecture, Enshi, China
| | - Yanli Cai
- Department of Cardiothoracic Surgery, The Central Hospital of Enshi Tujia and Miao Autonomous Prefecture, Enshi, China
| |
Collapse
|
9
|
Synthetic Circular miR-21 Sponge as Tool for Lung Cancer Treatment. Int J Mol Sci 2022; 23:ijms23062963. [PMID: 35328383 PMCID: PMC8955967 DOI: 10.3390/ijms23062963] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Revised: 02/27/2022] [Accepted: 03/04/2022] [Indexed: 02/01/2023] Open
Abstract
Lung cancer is the most common cancer in the world and several miRNAs are associated with it. MiRNA sponges are presented as tools to inhibit miRNAs. We designed a system to capture miRNAs based on circular RNAs (circRNA). To demonstrate its usefulness, we chose miR-21, which is upregulated and implicated in lung cancer. We constructed a miR-21 sponge and inserted it into a vector that facilitates circular RNA production (Circ-21) to study its effect on growth, colony formation, and migration in lung cancer cell lines and multicellular tumor spheroids (MTS). Circ-21 induced a significant and time-dependent decrease in the growth of A549 and LL2 cells, but not in L132 cells. Furthermore, A549 and LL2 cells transfected with Circ-21 showed a lower number of colonies and migration than L132. Similar findings were seen in A549 and LL2 Circ-21 MTS, which showed a significant decrease in volume growth, but not in L132 Circ-21 MTS. Based on this, the miR-21 circular sponge may suppress the processes of tumorigenesis and progression. Therefore, our system based on circular sponges seems to be effective, as a tool for the capture of other miRNAs.
Collapse
|
10
|
Wang Y, Wu Y, Xie S. CircPTK2 inhibits cell cisplatin (CDDP) resistance by targeting miR-942/TRIM16 axis in non-small cell lung cancer (NSCLC). Bioengineered 2022; 13:3651-3664. [PMID: 35230201 PMCID: PMC8973636 DOI: 10.1080/21655979.2021.2024321] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
In recent years, the problem of cancer resistance has become more and more prominent, seriously affecting treatment efficiency. Circular RNAs (circRNAs) play an important role in cell progression and cancer mechanisms. However, there is a lack of systematic studies on its function in non-small cell lung cancer (NSCLC) resistance. CircPTK2, microRNA-942 (miR-942), and Tripartite motif 16 (TRIM16) levels were detected by Real-time quantitative reverse transcriptase PCR (qRT-PCR). Extracellular acidification rate (ECAR), glucose consumption, and lactate production were assessed using the Seahorse XF96 Glycolysis Analyzer, glucose, and lactate assay kits, respectively. The protein expression was measured with the western bolt Transwell assay was used to determine migration and invasion of transfected cells. (4-5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) assay and flow cytometry were applied to carry out cell proliferation and apoptosis, respectively. The relationship among circPTK2, miR-942, and TRIM16 were determined by using the dual-luciferase reporter assay and RIP assay. circPTK2 (hsa_circ_0008305) and TRIM16 were low expressed, while miR-942 was significantly highly expressed in NSCLC tissues and cell lines. Moreover, overexpression of circPTK2 remarkably inhibited cell growth, metastasis, and glycolysis in A549/CDDP and H1299/CDDP cells. Promotion of miR-942 or inhibition of TRIM16 could reverse the effects of high circPTK2 expression on cell growth, metastasis, and glycolysis in A549/CDDP and H1299/CDDP cells. CircPTK2 overexpression inhibited the growth of A549/CDDP cells in vivo. Furthermore, circPTK2 weakened CDDP resistance of NSCLC through modulating miR-942/TRIM16 axis, providing a novel sight for the treatment of NSCLC and improving the understanding of the CDDP resistance mechanism of NSCLC.
Collapse
Affiliation(s)
- Yongfu Wang
- Department of Cardiothoracic Surgery, The Second People's Hospital of Yibin, Yibin, Sichuna, China
| | - Yuanlin Wu
- Department of Cardiothoracic Surgery, The Second People's Hospital of Yibin, Yibin, Sichuna, China
| | - Shaoqiang Xie
- Department of Cardiothoracic Surgery, The Second People's Hospital of Yibin, Yibin, Sichuna, China
| |
Collapse
|
11
|
Zheng Y, Wang Y, Mai R, Liu L, Zhu Z, Cao Y. Circ_0007534 Silencing Inhibits the Proliferation, Migration and Invasion and Induces the Apoptosis of Glioma Cells Partly Through Down-Regulating PROX1 Via Elevating miR-22-3p Level. Cell Mol Neurobiol 2021; 42:2819-2832. [PMID: 34536179 DOI: 10.1007/s10571-021-01150-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: 10/28/2020] [Accepted: 09/08/2021] [Indexed: 10/20/2022]
Abstract
Glioma is a common malignant brain neoplasm. The role and mechanism of circular RNA 0,007,534 (circ_0007534) in glioma progression were investigated in this study. The expression of circ_0007534, microRNA-22-3p (miR-22-3p) and prospero homeobox protein 1 (PROX1) messenger RNA (mRNA) was determined by quantitative real-time polymerase chain reaction (qRT-PCR). The proliferation, migration and invasion abilities were analyzed by colony formation assay, transwell migration assay and transwell invasion assay. Cell apoptosis was assessed through measuring the activity of Caspase-3 using the Caspase-3 kit and the apoptosis rate using flow cytometry. Dual-luciferase reporter assay was used to confirm the target interaction between miR-22-3p and circ_0007534 or PROX1. The protein level of PROX1 was examined by Western blot assay. Animal studies were conducted to analyze the influence of circ_0007534 interference on xenograft tumor growth in vivo. Circ_0007534 was highly expressed in glioma tissues and cell lines relative to that in normal tissues and NHA cell line. Circ_0007534 knockdown suppressed the proliferation and motility while induced the apoptosis of glioma cells. Circ_0007534 negatively regulated miR-22-3p level through targeting it in glioma cells. Circ_0007534 interference-induced influences in glioma cells were partly overturned by the silencing of miR-22-3p. PROX1 was a target of miR-22-3p, and circ_0007534 interference-mediated effects in glioma cells were largely diminished by the overexpression of PROX1. Circ_0007534 interference restrained glioma development in vivo. Circ_0007534 aggravated glioma progression through elevating PROX1 expression via targeting miR-22-3p, which provided new targets for the diagnosis and treatment of glioma.
Collapse
Affiliation(s)
- Yong Zheng
- Department of Neurosurgery, The Second Affiliated Hospital of Shenzhen University (People's Hospital of Shenzhen Baoan District), No. 118, Longjing Second Road, Xin'an Street, Baoan District, Shenzhen, 518101, China.
| | - Yan Wang
- Department of General Medicine, The Second Affiliated Hospital of Shenzhen University (People's Hospital of Shenzhen Baoan District), Shenzhen, China
| | - Rongkang Mai
- Department of Neurosurgery, The Second Affiliated Hospital of Shenzhen University (People's Hospital of Shenzhen Baoan District), No. 118, Longjing Second Road, Xin'an Street, Baoan District, Shenzhen, 518101, China
| | - Liang Liu
- Department of Neurosurgery, The Second Affiliated Hospital of Shenzhen University (People's Hospital of Shenzhen Baoan District), No. 118, Longjing Second Road, Xin'an Street, Baoan District, Shenzhen, 518101, China
| | - Zifeng Zhu
- Department of Neurosurgery, The Second Affiliated Hospital of Shenzhen University (People's Hospital of Shenzhen Baoan District), No. 118, Longjing Second Road, Xin'an Street, Baoan District, Shenzhen, 518101, China
| | - Yiyao Cao
- Department of Neurosurgery, The Second Affiliated Hospital of Shenzhen University (People's Hospital of Shenzhen Baoan District), No. 118, Longjing Second Road, Xin'an Street, Baoan District, Shenzhen, 518101, China
| |
Collapse
|
12
|
D’Ambrosi S, Visser A, Antunes-Ferreira M, Poutsma A, Giannoukakos S, Sol N, Sabrkhany S, Bahce I, Kuijpers MJE, Oude Egbrink MGA, Griffioen AW, Best MG, Koppers-Lalic D, Oudejans C, Würdinger T. The Analysis of Platelet-Derived circRNA Repertoire as Potential Diagnostic Biomarker for Non-Small Cell Lung Cancer. Cancers (Basel) 2021; 13:4644. [PMID: 34572871 PMCID: PMC8468408 DOI: 10.3390/cancers13184644] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 09/06/2021] [Accepted: 09/13/2021] [Indexed: 12/15/2022] Open
Abstract
Tumor-educated Platelets (TEPs) have emerged as rich biosources of cancer-related RNA profiles in liquid biopsies applicable for cancer detection. Although human blood platelets have been found to be enriched in circular RNA (circRNA), no studies have investigated the potential of circRNA as platelet-derived biomarkers for cancer. In this proof-of-concept study, we examine whether the circRNA signature of blood platelets can be used as a liquid biopsy biomarker for the detection of non-small cell lung cancer (NSCLC). We analyzed the total RNA, extracted from the platelet samples collected from NSCLC patients and asymptomatic individuals, using RNA sequencing (RNA-Seq). Identification and quantification of known and novel circRNAs were performed using the accurate CircRNA finder suite (ACFS), followed by the differential transcript expression analysis using a modified version of our thromboSeq software. Out of 4732 detected circRNAs, we identified 411 circRNAs that are significantly (p-value < 0.05) differentially expressed between asymptomatic individuals and NSCLC patients. Using the false discovery rate (FDR) of 0.05 as cutoff, we selected the nuclear receptor-interacting protein 1 (NRIP1) circRNA (circNRIP1) as a potential biomarker candidate for further validation by reverse transcription-quantitative PCR (RT-qPCR). This analysis was performed on an independent cohort of platelet samples. The RT-qPCR results confirmed the RNA-Seq data analysis, with significant downregulation of circNRIP1 in platelets derived from NSCLC patients. Our findings suggest that circRNAs found in blood platelets may hold diagnostic biomarkers potential for the detection of NSCLC using liquid biopsies.
Collapse
Affiliation(s)
- Silvia D’Ambrosi
- Department of Neurosurgery, Cancer Center Amsterdam, Amsterdam UMC, Vrije Universiteit Amsterdam, 1081 HV Amsterdam, The Netherlands; (S.D.); (M.A.-F.); (M.G.B.); (D.K.-L.)
| | - Allerdien Visser
- Department of Clinical Chemistry, Cancer Center Amsterdam, Amsterdam UMC, Vrije Universiteit Amsterdam, 1081 HV Amsterdam, The Netherlands; (A.V.); (A.P.); (C.O.)
| | - Mafalda Antunes-Ferreira
- Department of Neurosurgery, Cancer Center Amsterdam, Amsterdam UMC, Vrije Universiteit Amsterdam, 1081 HV Amsterdam, The Netherlands; (S.D.); (M.A.-F.); (M.G.B.); (D.K.-L.)
| | - Ankie Poutsma
- Department of Clinical Chemistry, Cancer Center Amsterdam, Amsterdam UMC, Vrije Universiteit Amsterdam, 1081 HV Amsterdam, The Netherlands; (A.V.); (A.P.); (C.O.)
| | - Stavros Giannoukakos
- Department of Genetics, Faculty of Science, University of Granada, 18071 Granada, Spain;
- Bioinformatics Laboratory, Biotechnology Institute, Centro de Investigación Biomédica, PTS, 18100 Granada, Spain
| | - Nik Sol
- Brain Tumor Center Amsterdam, Cancer Center Amsterdam, Amsterdam UMC, Vrije Universiteit Amsterdam, 1081 HV Amsterdam, The Netherlands;
- Department of Neurology, Cancer Center Amsterdam, Amsterdam UMC, Vrije Universiteit Amsterdam, 1081 HV Amsterdam, The Netherlands
| | - Siamack Sabrkhany
- Department of Physiology, Cardiovascular Research Institute Maastricht, Maastricht University Medical Center, 6229 ER Maastricht, The Netherlands; (S.S.); (M.G.A.O.E.)
| | - Idris Bahce
- Department of Pulmonary Diseases, Cancer Center Amsterdam, Amsterdam UMC, Vrije Universiteit Amsterdam, 1081 HV Amsterdam, The Netherlands;
| | - Marijke J. E. Kuijpers
- Department of Biochemistry, Cardiovascular Research Institute Maastricht, Maastricht University, 6229 ER Maastricht, The Netherlands;
| | - Mirjam G. A. Oude Egbrink
- Department of Physiology, Cardiovascular Research Institute Maastricht, Maastricht University Medical Center, 6229 ER Maastricht, The Netherlands; (S.S.); (M.G.A.O.E.)
| | - Arjan W. Griffioen
- Angiogenesis Laboratory, Department of Medical Oncology, Amsterdam UMC, Vrije Universiteit Amsterdam, 1081 HV Amsterdam, The Netherlands;
| | - Myron G. Best
- Department of Neurosurgery, Cancer Center Amsterdam, Amsterdam UMC, Vrije Universiteit Amsterdam, 1081 HV Amsterdam, The Netherlands; (S.D.); (M.A.-F.); (M.G.B.); (D.K.-L.)
- Brain Tumor Center Amsterdam, Cancer Center Amsterdam, Amsterdam UMC, Vrije Universiteit Amsterdam, 1081 HV Amsterdam, The Netherlands;
| | - Danijela Koppers-Lalic
- Department of Neurosurgery, Cancer Center Amsterdam, Amsterdam UMC, Vrije Universiteit Amsterdam, 1081 HV Amsterdam, The Netherlands; (S.D.); (M.A.-F.); (M.G.B.); (D.K.-L.)
- Brain Tumor Center Amsterdam, Cancer Center Amsterdam, Amsterdam UMC, Vrije Universiteit Amsterdam, 1081 HV Amsterdam, The Netherlands;
| | - Cees Oudejans
- Department of Clinical Chemistry, Cancer Center Amsterdam, Amsterdam UMC, Vrije Universiteit Amsterdam, 1081 HV Amsterdam, The Netherlands; (A.V.); (A.P.); (C.O.)
| | - Thomas Würdinger
- Department of Neurosurgery, Cancer Center Amsterdam, Amsterdam UMC, Vrije Universiteit Amsterdam, 1081 HV Amsterdam, The Netherlands; (S.D.); (M.A.-F.); (M.G.B.); (D.K.-L.)
- Brain Tumor Center Amsterdam, Cancer Center Amsterdam, Amsterdam UMC, Vrije Universiteit Amsterdam, 1081 HV Amsterdam, The Netherlands;
| |
Collapse
|
13
|
Chen HH, Zhang TN, Wu QJ, Huang XM, Zhao YH. Circular RNAs in Lung Cancer: Recent Advances and Future Perspectives. Front Oncol 2021; 11:664290. [PMID: 34295810 PMCID: PMC8290158 DOI: 10.3389/fonc.2021.664290] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 06/21/2021] [Indexed: 12/13/2022] Open
Abstract
Globally, lung cancer is the most commonly diagnosed cancer and carries with it the greatest mortality rate, with 5-year survival rates varying from 4–17% depending on stage and geographical differences. For decades, researchers have studied disease mechanisms, occurrence rates and disease development, however, the mechanisms underlying disease progression are not yet fully elucidated, thus an increased understanding of disease pathogenesis is key to developing new strategies towards specific disease diagnoses and targeted treatments. Circular RNAs (circRNAs) are a class of non-coding RNA widely expressed in eukaryotic cells, and participate in various biological processes implicated in human disease. Recent studies have indicated that circRNAs both positively and negatively regulate lung cancer cell proliferation, migration, invasion and apoptosis. Additionally, circRNAs could be promising biomarkers and targets for lung cancer therapies. This review systematically highlights recent advances in circRNA regulatory roles in lung cancer, and sheds light on their use as potential biomarkers and treatment targets for this disease.
Collapse
Affiliation(s)
- Huan-Huan Chen
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China.,Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China.,Department of Oncology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Tie-Ning Zhang
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China.,Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China.,Department of Pediatric, Shengjing Hospital of China Medical University, Shenyang, China
| | - Qi-Jun Wu
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China.,Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China
| | - Xin-Mei Huang
- Department of Endocrinology, Shanghai Fifth People's Hospital, Fudan University, Shanghai, China
| | - Yu-Hong Zhao
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China.,Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China
| |
Collapse
|
14
|
Liang H, Lin Z, Lin H, Zhao L, Huang W. circRNA_103615 contributes to tumor progression and cisplatin resistance in NSCLC by regulating ABCB1. Exp Ther Med 2021; 22:934. [PMID: 34306203 PMCID: PMC8281253 DOI: 10.3892/etm.2021.10366] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Accepted: 02/22/2021] [Indexed: 12/18/2022] Open
Abstract
Lung cancer is one of the main causes of tumor lethality worldwide. Circular RNAs (circRNAs) have essential roles in tumor progression. However, in non-small cell lung carcinoma (NSCLC), the role of circRNAs remains unknown. In the present study, the expression, function and molecular mechanisms of a new circRNA, circRNA_103615, were investigated in NSCLC. Reverse transcription-quantitative PCR (RT-qPCR) was used to detect circRNA_103615 expression levels in NSCLC and normal tissues, as well as in NSCLC cell lines. MTT assay, flow cytometric assay, colony formation assay, and cell migration and invasion assays were used to examine the function of circRNA_103615 in NSCLC cells. MTT assay, colony formation assay, RT-qPCR, and western blotting were used to detect the effect of circRNA_103615 on cisplatin resistance. The results demonstrated that NSCLC cell lines and tissues had increased levels of circRNA_103615 compared with normal cells and normal tissues, respectively. Functionally, silencing of circRNA_103615 by small interfering RNA resulted in suppression of cell growth, migration, and invasion, but promotion of cell apoptosis. In addition, the cisplatin resistance of NSCLC was reversed by the silencing of circRNA_103615. Notably, ATP binding cassette subfamily Bmember 1 (ABCB1) expression was significantly decreased following circRNA_103615 knockdown, and ABCB1 overexpression reversed the effects of circRNA_103615 silencing on NSCLC cisplatin resistance. Thus, the present study indicated that circRNA_103615 may serve as a critical oncogene and potential novel biomarker in NSCLC, as well as a potential cisplatin resistance promoter, by regulating ABCB1 expression.
Collapse
Affiliation(s)
- Hongguang Liang
- Department of Oncology, Jinshazhou Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510168, P.R. China
| | - Zelong Lin
- Department of Thoracic Surgery, Traditional Chinese Medicine-Integrated Hospital, Southern Medical University, Guangzhou, Guangdong 510315, P.R. China
| | - Huiwen Lin
- Department of Oncology, Jinshazhou Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510168, P.R. China
| | - Li Zhao
- Department of Oncology, Jinshazhou Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510168, P.R. China
| | - Weihua Huang
- Department of Oncology, Jinshazhou Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510168, P.R. China.,Department of Thoracic Surgery, Fuda Cancer Hospital, Jinan University, Guangzhou, Guangdong 510665, P.R. China
| |
Collapse
|
15
|
Zheng Y, Hu J, Li Y, Hao R, Qi Y. Clinicopathological and prognostic significance of circRNAs in lung cancer: A systematic review and meta-analysis. Medicine (Baltimore) 2021; 100:e25415. [PMID: 33832139 PMCID: PMC8036086 DOI: 10.1097/md.0000000000025415] [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: 06/03/2020] [Accepted: 03/10/2021] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND Circular RNAs (circRNAs) regulate multiple pathways during lung cancer pathogenesis. Apart from functional significance, many circRNAs have been shown to be associated with clinicopathological characteristics and predict lung cancer prognosis. Our aim is to summarize the expanding knowledge of clinical roles of circRNAs in lung cancer. METHODS A thorough search of literature was conducted to identify articles about the correlation between circRNA expression and its prognostic and clinicopathological values. Biological mechanisms were summarized. RESULTS This study included 35 original articles and 32 circRNAs with prognostic roles for lung cancer. Increased expression of 25 circRNAs and decreased expression of 7 circRNAs predicted poor prognosis. For non-small cell lung cancer, changes of circRNAs were correlated with tumor size, lymph node metastasis, distant metastasis, tumor node metastasis (TNM) stage, and differentiation, indicating the major function of circRNAs is to promote lung cancer invasion and migration. Particularly, meta-analysis of ciRS-7, hsa_circ_0020123, hsa_circ_0067934 showed increase of the 3 circRNAs was associated with positive lymph node metastasis. Increase of ciRS-7 and hsa_circ_0067934 was also related with advanced TNM stage. The biological effects depend on the general function of circRNA as microRNA sponge. CONCLUSIONS CircRNAs have the potential to function as prognostic markers and are associated with lung cancer progression and metastasis.
Collapse
Affiliation(s)
- Yuxuan Zheng
- School of Nursing, Hebei Medical University, Shijiazhuang, Hebei
- Department of Respiratory Medicine, First Hospital of Jilin University, Changchun, Jilin, China
- Department of Pharmacology and Toxicology, School of Medicine, University of Louisville, Louisville, KY
- Morning Star Academic Cooperation, Shanghai
| | - Jie Hu
- Department of Science and Technology, Hebei Medical University
| | - Yishuai Li
- Department of Thoracic Surgery, Hebei Provincial Chest Hospital
| | - Ran Hao
- School of Nursing, Hebei Medical University, Shijiazhuang, Hebei
- Morning Star Academic Cooperation, Shanghai
| | - Yixin Qi
- Department of Breast Center, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| |
Collapse
|
16
|
Jiang M, Fang S, Zhao X, Zhou C, Gong Z. Epithelial-mesenchymal transition-related circular RNAs in lung carcinoma. Cancer Biol Med 2021; 18:j.issn.2095-3941.2020.0238. [PMID: 33710806 PMCID: PMC8185863 DOI: 10.20892/j.issn.2095-3941.2020.0238] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Accepted: 07/21/2020] [Indexed: 12/11/2022] Open
Abstract
The epithelial-mesenchymal transition (EMT) is a highly complex phenotypic conversion during embryogenesis, and is important for metastasis, which contributes to tumor deterioration and poor prognoses of cancer patients. Lung carcinoma has a high tendency to develop the EMT. Circular RNAs (circRNAs) are involved in EMT-related cell invasion and metastasis in various types of cancers. Moreover, circRNAs have been found to be a link to EMT-related transcription factors and EMT-associated signaling pathways. This review mainly focuses on the influence of EMT-related circRNAs on lung carcinomas. More specifically, the roles of EMT-inducing and EMT-suppressive circRNAs in lung carcinomas are discussed. With circRNAs potentially becoming promising biomarkers and therapeutic targets for cancer managements, they will hopefully stimulate the interest of medical workers in the early diagnosis, personalized treatment, and positive prognoses in the era of precision oncology.
Collapse
Affiliation(s)
- Meina Jiang
- Department of Biochemistry and Molecular Biology, Ningbo University School of Medicine, Ningbo 315211, China
- Zhejiang Province Key Laboratory of Pathophysiology, Ningbo University School of Medicine, Ningbo 315211, China
| | - Shuai Fang
- Department of Biochemistry and Molecular Biology, Ningbo University School of Medicine, Ningbo 315211, China
- Zhejiang Province Key Laboratory of Pathophysiology, Ningbo University School of Medicine, Ningbo 315211, China
| | - Xiaodong Zhao
- Department of Biochemistry and Molecular Biology, Ningbo University School of Medicine, Ningbo 315211, China
- Department of Thoracic Surgery, The Affiliated Hospital of Ningbo University School of Medicine, Ningbo 315020, China
| | - Chengwei Zhou
- Department of Biochemistry and Molecular Biology, Ningbo University School of Medicine, Ningbo 315211, China
- Department of Thoracic Surgery, The Affiliated Hospital of Ningbo University School of Medicine, Ningbo 315020, China
| | - Zhaohui Gong
- Department of Biochemistry and Molecular Biology, Ningbo University School of Medicine, Ningbo 315211, China
- Zhejiang Province Key Laboratory of Pathophysiology, Ningbo University School of Medicine, Ningbo 315211, China
| |
Collapse
|
17
|
Yang X, Tian W, Wang S, Ji X, Zhou B. CircRNAs as promising biomarker in diagnostic and prognostic of lung cancer: An updated meta-analysis. Genomics 2020; 113:387-397. [PMID: 33326833 DOI: 10.1016/j.ygeno.2020.12.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Accepted: 12/10/2020] [Indexed: 12/24/2022]
Abstract
BACKGROUND As a class of endogenous non-coding RNAs with closed-loop structure, circular RNAs (circRNAs) are receiving more and more attention. CircRNAs have been reported to be widely expressed in various human cancers and are implicated in tumorigenesis and progression. The present study aimed to systematically evaluate the clinicopathological, diagnostic and prognostic values of circRNAs in lung cancer. METHODS We searched literature from PubMed, Web of science, Cochrane Library, EMBASE and Ovid online databases up to May 29, 2020. Statistical analyses were undertaken based on Stata 11.0, Meta-DiSc 1.4, and RevMan 5.3 software. RESULTS Finally, a total of 63 eligible articles were included in our meta-analysis, including 18 studies for diagnosis, 22 studies for prognosis and 57 studies for clinicopathological features. In terms of diagnostic values, circRNAs could discriminate between lung cancer patients and the normal individuals with a relatively high pooled area under the curve (AUC) of 0.83 (95%CI, 0.80-0.86). For the prognostic values, we found that elevated expression of oncogenic circRNAs could predict poor survival outcomes based on multivariate analysis (HR = 2.430, 95%CI = 2.003-2.948, P < 0.001 for OS; HR = 2.228, 95%CI = 1.289-3.853, P = 0.004 for DFS) while tumor-suppressor circRNAs was correlated with better OS in univariate analysis (HR = 0.627, 95%CI = 0.519-0.757, P < 0.001). The pooled results suggested that elevated expression of carcinogenic circRNAs was associated with tumor size (OR = 1.676, 95%CI = 1.209-2.323, P = 0.002), smoking statue (OR = 1.260, 95%CI = 1.062-1.494, P = 0.008), TNM stage (OR = 2.345, 95%CI = 1.617-3.399, P < 0.001), differentiation grade (OR = 1.843, 95%CI = 1.228-2.765, P = 0.003), and lymphatic metastasis (OR = 2.097, 95%CI = 1.482-2.967, P < 0.001). Moreover, the expression of tumor-suppressor circRNAs was related to the improved clinicopathological features (lymphatic metastasis: OR = 0.536, 95%CI = 0.311-0.926, P = 0.025). CONCLUSIONS Our meta-analysis demonstrated that circRNAs could be used as feasible and important biomarkers for diagnosis, prognosis and clinicopathological features in lung cancer.
Collapse
Affiliation(s)
- Xianglin Yang
- Department of Clinical Epidemiology, First Affiliated Hospital, China Medical University, Shenyang 110001, China; Department of Epidemiology, School of Public Health, China Medical University, Shenyang, 110122, China.
| | - Wen Tian
- Department of Clinical Epidemiology, First Affiliated Hospital, China Medical University, Shenyang 110001, China; Department of Epidemiology, School of Public Health, China Medical University, Shenyang, 110122, China.
| | - Shen Wang
- Department of Clinical Epidemiology, First Affiliated Hospital, China Medical University, Shenyang 110001, China; Department of Epidemiology, School of Public Health, China Medical University, Shenyang, 110122, China.
| | - Xiaotong Ji
- Department of Clinical Epidemiology, First Affiliated Hospital, China Medical University, Shenyang 110001, China; Department of Epidemiology, School of Public Health, China Medical University, Shenyang, 110122, China.
| | - Baosen Zhou
- Department of Clinical Epidemiology, First Affiliated Hospital, China Medical University, Shenyang 110001, China; Department of Epidemiology, School of Public Health, China Medical University, Shenyang, 110122, China.
| |
Collapse
|
18
|
Brown JR, Chinnaiyan AM. The Potential of Circular RNAs as Cancer Biomarkers. Cancer Epidemiol Biomarkers Prev 2020; 29:2541-2555. [PMID: 33060073 DOI: 10.1158/1055-9965.epi-20-0796] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 08/24/2020] [Accepted: 10/12/2020] [Indexed: 01/17/2023] Open
Abstract
Circular RNA (circRNA) is a covalently closed RNA structure that has several proposed functions related to cancer development. Recently, cancer-specific and tissue-specific circRNAs have been identified by high-throughput sequencing and are curated in publicly available databases. CircRNAs have features that are ideal properties of biomarkers, including conservation, abundance, and stability in plasma, saliva, and urine. Many circRNAs with predictive and prognostic significance in cancer have been described, and functional mechanisms for some circRNAs have been suggested. CircRNA also has great potential as a noninvasive biomarker for early cancer detection, although further investigation is necessary before clinical application is feasible.See all articles in this CEBP Focus section, "NCI Early Detection Research Network: Making Cancer Detection Possible."
Collapse
Affiliation(s)
- Jason R Brown
- Rogel Cancer Center, Michigan Medicine, University of Michigan, Ann Arbor, Michigan
| | - Arul M Chinnaiyan
- Rogel Cancer Center, Michigan Medicine, University of Michigan, Ann Arbor, Michigan.
| |
Collapse
|
19
|
Lu H, Xie X, Chen Q, Cai S, Liu S, Bao C, Luo J, Kong J. Clinical significance of circPVT1 in patients with non-small cell lung cancer who received cisplatin combined with gemcitabine chemotherapy. TUMORI JOURNAL 2020; 107:204-208. [PMID: 32734834 DOI: 10.1177/0300891620941940] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
OBJECTIVE CircPVT1 was identified as a tumor-promoted circRNA that is upregulated in several cancers. We researched clinical significance of circPVT1 in patients with non-small cell lung cancer (NSCLC) who received cisplatin combined with gemcitabine chemotherapy. METHODS Reverse transcriptase polymerase chain reaction assays were performed to detect circPVT1 expression in 96 patients with NSCLC. In addition, Kaplan-Meier methods were performed to analyze survival of patients with NSCLC. RESULTS There is no significant difference between circPVT1 and age, sex, histologic type, lymphatic invasion, or vascular invasion in patients with NSCLC and there is significant difference between circPVT1 and differentiation or p-TNM stage in patients with NSCLC. In addition, after cisplatin combined with gemcitabine chemotherapy, circPVT1 expression was decreased, and circPVT1 expression in the chemotherapy-resistant group was higher than in the chemotherapy-sensitive group. Survival of patients with NSCLC was associated with high circPVT1 expression. CONCLUSIONS Our study revealed the clinical significance of circPVT1 in NSCLC after cisplatin combined with gemcitabine chemotherapy. After treatment, circPVT1 expression was decreased and circPVT1 expression in chemotherapy-resistant patients was higher than in chemotherapy-sensitive patients. Decreased circPVT1 expression in chemotherapy-sensitive patients is more notable than in chemotherapy-resistant patients. Therefore, it is possible to determine the effect of therapy after receiving chemotherapy by detecting the expression of circRNA in serum.
Collapse
Affiliation(s)
- Huasong Lu
- Pulmonary and Critical Care Medicine Ward, the First Affiliated Hospital of Guangxi Medical University, Qingxiu District, Nanning, Guangxi, China
| | - Xun Xie
- Pulmonary and Critical Care Medicine Ward, the First Affiliated Hospital of Guangxi Medical University, Qingxiu District, Nanning, Guangxi, China
| | - Quanfang Chen
- Pulmonary and Critical Care Medicine Ward, the First Affiliated Hospital of Guangxi Medical University, Qingxiu District, Nanning, Guangxi, China
| | - Shuangqi Cai
- Pulmonary and Critical Care Medicine Ward, the First Affiliated Hospital of Guangxi Medical University, Qingxiu District, Nanning, Guangxi, China
| | - Si Liu
- Pulmonary and Critical Care Medicine Ward, the First Affiliated Hospital of Guangxi Medical University, Qingxiu District, Nanning, Guangxi, China
| | - Chongxi Bao
- Pulmonary and Critical Care Medicine Ward, the First Affiliated Hospital of Guangxi Medical University, Qingxiu District, Nanning, Guangxi, China
| | - Jin Luo
- Pulmonary and Critical Care Medicine Ward, the First Affiliated Hospital of Guangxi Medical University, Qingxiu District, Nanning, Guangxi, China
| | - Jinliang Kong
- Pulmonary and Critical Care Medicine Ward, the First Affiliated Hospital of Guangxi Medical University, Qingxiu District, Nanning, Guangxi, China
| |
Collapse
|
20
|
Yang Q, Chen L, Yang L, Huang Y. Diagnostic and prognostic values of circular RNAs for lung cancer: a meta-analysis. Postgrad Med J 2020; 97:286-293. [PMID: 32518074 DOI: 10.1136/postgradmedj-2019-137178] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 05/06/2020] [Accepted: 05/10/2020] [Indexed: 12/09/2022]
Abstract
Circular RNAs (circRNAs) may serve as potential biomarkers for patients with lung cancer. The aim of this meta-analysis was to analyse the diagnostic, prognostic and clinicopathological values of circRNAs in lung cancer patients. A systematic search of PubMed, Embase, Web of Science, Scopus and the Cochrane Library databases was performed for relevant articles from inception to 29 January 2020. Pooled parameters including sensitivity, specificity and area under the curve (AUC) were used to assess the diagnostic performance, HRs and 95% CIs were used to evaluate overall survival (OS) and ORs were used to estimate clinicopathological parameters. 52 studies from 45 articles were enrolled in this study, including 17 on diagnosis and 35 on prognosis. For diagnostic values, circRNAs could discriminate lung cancer patients from the controls, with AUC of 0.83 (95% CI: 0.79 to 0.86), a relatively high sensitivity of 0.77 (95% CI: 0.73 to 0.81) and specificity of 0.75 (95% CI: 0.71 to 0.79). For prognostic significances, overexpression of 23 upregulated circRNAs was relevant to a poor prognosis (OS: HR=2.21, 95% CI: 1.96 to 2.49, p<0.001), and overexpression of 9 downregulated circRNAs was correlated with a favourable prognosis (OS: HR=0.62, 95% CI: 0.53 to 0.73, p<0.001). As for clinicopathological parameters, high expression of 23 upregulated circRNAs was associated with unfavourable clinicopathological features while 9 downregulated circRNAs proved the contrary. In conclusion, this study confirmed that circRNAs might serve as important biomarkers for diagnostic and prognostic values of lung cancer.
Collapse
Affiliation(s)
- Qian Yang
- Department of Transfusion, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China
| | - Lizhen Chen
- Prenatal Diagnosis Center, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China
| | - Li Yang
- Department of Transfusion, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China
| | - Yuanshuai Huang
- Department of Transfusion, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China
| |
Collapse
|
21
|
Tu C, He J, Qi L, Ren X, Zhang C, Duan Z, Yang K, Wang W, Lu Q, Li Z. Emerging landscape of circular RNAs as biomarkers and pivotal regulators in osteosarcoma. J Cell Physiol 2020; 235:9037-9058. [PMID: 32452026 DOI: 10.1002/jcp.29754] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 04/18/2020] [Accepted: 04/22/2020] [Indexed: 12/13/2022]
Abstract
Osteosarcoma represents the most prevailing primary bone tumor and the third most common cancer in children and adolescents worldwide. Among noncoding RNAs, circular RNAs (circRNAs) refer to a unique class in the shape of a covalently closed continuous loop with neither 5' caps nor 3'-polyadenylated tails, which are generated through back-splicing. Recently, with the development of whole-genome and transcriptome sequencing technologies, a growing number of circRNAs have been found aberrantly expressed in multiple diseases, including osteosarcoma. circRNA are capable of various biological functions including miRNA sponge, mediating alternatives, regulating genes at posttranscriptional levels, and interacting with proteins, indicating a pivotal role of circRNA in cancer initiation, progression, chemoresistance, and immune response. Moreover, circRNAs have been thrust into the spotlight as potential biomarkers and therapeutic targets in osteosarcoma. Herein, we briefly summarize the origin and biogenesis of circRNA with current knowledge of circRNA in tumorigenesis of osteosarcoma, aiming to elucidate the specific role and clinical implication of circRNAs in osteosarcoma.
Collapse
Affiliation(s)
- Chao Tu
- Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Tumor Models and Individualized Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Jieyu He
- Department of Geriatrics, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Lin Qi
- Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Xiaolei Ren
- Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Chenghao Zhang
- Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Zhixi Duan
- Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Kexin Yang
- Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Wanchun Wang
- Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Tumor Models and Individualized Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Qiong Lu
- Department of Pharmacy, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Zhihong Li
- Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Tumor Models and Individualized Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| |
Collapse
|
22
|
Drula R, Braicu C, Harangus A, Nabavi SM, Trif M, Slaby O, Ionescu C, Irimie A, Berindan-Neagoe I. Critical function of circular RNAs in lung cancer. WILEY INTERDISCIPLINARY REVIEWS-RNA 2020; 11:e1592. [PMID: 32180372 DOI: 10.1002/wrna.1592] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 02/11/2020] [Accepted: 02/12/2020] [Indexed: 12/12/2022]
Abstract
Lung cancer is one of the main causes of cancer-related death in the world, especially due to its frequency and ineffective therapeutically approaches in the late stages of the disease. Despite the recent advent of promising new targeted therapies, lung cancer diagnostic strategies still have difficulty in identifying the disease at an early stage. Therefore, the characterizations of more sensible and specific cancer biomarkers have become an important goal for clinicians. Circular RNAs (circRNAs), a type of RNA with covalently closed continuous loop structures that display high structural resistance and tissue specificity pointed toward a potential biomarker role. Current investigations have identified that circRNAs have a prominent function in the regulation of oncogenic pathways, by regulating gene expression both at transcriptional and post-transcriptional level. The aim of this review is to provide novel information regarding the implications of circRNAs in lung cancer, with an emphasis on the role in disease development and progression. Initially, we explored the potential utility of circRNAs as biomarkers, focusing on function, mechanisms, and correlation with disease progression in lung cancer. Further, we will describe the interaction between circRNAs and other non-coding species of RNA (particularly microRNA) and their biological significance in lung cancer. Describing the nature of these interactions and their therapeutic potential will provide additional insight regarding the altered molecular landscape of lung cancer and consolidate the potential clinical value of these circular transcripts. This article is categorized under: RNA Structure and Dynamics > Influence of RNA Structure in Biological Systems RNA in Disease and Development > RNA in Disease RNA in Disease and Development > RNA in Development.
Collapse
Affiliation(s)
- Rares Drula
- Research Center for Functional Genomics, Biomedicine and Translational Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Cornelia Braicu
- Research Center for Functional Genomics, Biomedicine and Translational Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Antonia Harangus
- Research Center for Functional Genomics, Biomedicine and Translational Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania.,"Leon Daniello" Pneumology Clinic, Cluj-Napoca, Romania
| | - Seyed M Nabavi
- Applied Biotechnology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | | | - Ondrej Slaby
- Central European Institute of Technology, Masaryk University, Brno, Czech Republic.,Department of Comprehensive Cancer Care, Masaryk Memorial Cancer Institute, Brno, Czech Republic
| | - Calin Ionescu
- 5th Surgical Department, Municipal Hospital, Cluj-Napoca, Romania.,Department of Surgery, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Alexandru Irimie
- Department of Surgery, The Oncology Institute "Prof. Dr. Ion Chiricuta", Cluj-Napoca, Romania.,Department of Surgical Oncology and Gynecological Oncology, University of Medicine and Pharmacy Iuliu Hatieganu, Cluj-Napoca, Romania
| | - Ioana Berindan-Neagoe
- Research Center for Functional Genomics, Biomedicine and Translational Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania.,MEDFUTURE-Research Center for Advanced Medicine, University of Medicine and Pharmacy Iuliu Hatieganu, Cluj-Napoca, Romania.,Department of Functional Genomics and Experimental Pathology, The Oncology Institute Prof. Dr. Ion Chiricuta, Cluj-Napoca, Romania
| |
Collapse
|
23
|
Xiao G, Huang W, Zhan Y, Li J, Tong W. CircRNA_103762 promotes multidrug resistance in NSCLC by targeting DNA damage inducible transcript 3 (CHOP). J Clin Lab Anal 2020; 34:e23252. [PMID: 32118311 PMCID: PMC7307340 DOI: 10.1002/jcla.23252] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 01/06/2020] [Accepted: 01/13/2020] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND CircRNAs have been found to play crucial roles in multiple tumor including non-small cell lung cancer (NSCLC). Here, we researched the correlation between circRNA_103762 and chemotherapy resistance. METHODS RT-PCR assay was performed to detect circRNA_103762 and DNA damage inducible transcript 3 (CHOP) expression. CCK8 assay was performed to examine cell proliferation and IC50 of different drug. Migration and invasion assay was used to detect cell migration and invasion. RESULTS In our study, circRNA_103762 expression was upregulated in NSCLC tissues and cell. Knockdown of circRNA_103762 can inhibited cell proliferation, migration and invasion in NSCLC. In addition, downregulation of circRNA_103762 promoted CHOP expression and inhibited multidrug resistance (MDR) in NSCLC. CONCLUSION Together, we demonstrated that circRNA_103762 is upregulated in NSCLC and functions as an oncogene in NSCLC, and circRNA_103762 enhanced MDR by inhibited CHOP expression in NSCLC cells. These results will help us understand the MDR of NSCLC, providing better effective therapy strategies for patients.
Collapse
Affiliation(s)
- Guanhua Xiao
- Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Wenqi Huang
- Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yongzhong Zhan
- Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Jing Li
- Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Wancheng Tong
- Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| |
Collapse
|
24
|
Bao Q, Li F, Zheng H, Chen S, Song X. Prognostic role of dysregulated circRNAs in patients with non-small cell lung cancer: a meta-analysis. J Thorac Dis 2020; 12:823-829. [PMID: 32274149 PMCID: PMC7139017 DOI: 10.21037/jtd.2019.12.71] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Background Lung cancer is the leading cause of cancer incidence and mortality. Non-small cell lung cancer (NSCLC) accounts for the vast majority of lung cancer, which lacks comprehensive prognostic biomarkers to predict the prognosis of patients. This research was performed to assess the potential prognostic role of circular RNAs (circRNAs) in patients with NSCLC. Methods We searched the following databases: PubMed, Web of Science, Embase, and Ovid MEDLINE(R) up to May 20, 2019 to identify studies which explored the association between circRNAs and NSCLC. Newcastle-Ottawa Scale (NOS) was applied to assess the quality of the included studies. Pooled hazard ratios (HRs) and the corresponding 95% confidence interval (CI) were calculated to assess the prognostic value of circRNAs in patients with NSCLC. Subgroup analyses were performed to explain heterogeneity among the included studies. Publication bias was estimated using Begg’s funnel plot. Sensitivity analysis was performed to test the stability of pooled results. Results A total of 19 eligible studies including 1,650 NSCLC patients were included in this research. Pooled results indicated that the up-regulated expression of circRNAs was significantly associated with worse prognosis of patients with NSCLC (HR =2.08, 95% CI: 1.81–2.40). Conclusions Our finding indicated that circRNAs could serve as prognostic biomarkers in patients with NSCLC. However, further large-scale prospective studies about the clinical significance of circRNAs are of great need in order to obtain conclusive results.
Collapse
Affiliation(s)
- Quanwa Bao
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai 200433, China
| | - Feng Li
- Department of Orthopaedics, The 943rd Hospital of Joint Logistics Support Force of PLA, Wuwei 733000, China
| | - Houzhen Zheng
- Department of Respiratory Medicine, Shantou Central Hospital, Shantou 515031, China
| | - Shaobo Chen
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai 200433, China.,Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University, Shanghai 200433, China
| | - Xiao Song
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University, Shanghai 200433, China
| |
Collapse
|
25
|
Dong L, Zheng J, Gao Y, Zhou X, Song W, Huang J. The circular RNA NT5E promotes non-small cell lung cancer cell growth via sponging microRNA-134. Aging (Albany NY) 2020; 12:3936-3949. [PMID: 32096481 PMCID: PMC7066882 DOI: 10.18632/aging.102861] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Accepted: 01/28/2020] [Indexed: 02/07/2023]
Abstract
The current study tested expression and potential function of circular RNA ecto-5’-nucleotidase (circNT5E) in human non-small cell lung cancer (NSCLC). We show that circNT5E levels are significantly elevated in human NSCLC tissues and cells, correlating with downregulation of its potential targets, miR-134, miR-422a and miR-338. In A549 and primary NSCLC cells, circNT5E shRNA inhibited cancer cell growth, proliferation and migration, whiling inducing apoptosis activation. Conversely, ectopic circNT5E overexpression promoted A549 cell progression in vitro. miR-134 is the primary target of circNT5E in lung cancer cells. RNA-Pull down assay in A549 cells confirmed the direct association between biotinylated-miR-134 and circNT6E. miR-134 levels were significantly increased in circNT5E-silenced A549 cells, but reduced with circNT5E overexpression. Forced overexpression of miR-134 mimicked circNT5E shRNA-induced actions, inhibiting NSCLC cell growth and proliferation. In contrast, miR-134 inhibition largely attenuated circNT5E shRNA-induced anti-NSCLC cell activity. Importantly, circNT5E shRNA was ineffective in miR-134-overexpressed A549 cells. Collectively, circNT5E promotes human NSCLC cell progression possibly by sponging miR-134.
Collapse
Affiliation(s)
- Lingyun Dong
- Department of Respiratory Medicine, The First Affiliated Hospital of Soochow University, Suzhou, China.,Department of Respiratory Medicine, Affiliated Wujiang Hospital of Nantong University, Suzhou, China
| | - Jiangnan Zheng
- Department of Respiratory Medicine, Affiliated Wujiang Hospital of Nantong University, Suzhou, China
| | - Yun Gao
- Department of General Surgery, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Xiaoting Zhou
- Department of Respiratory Medicine, Affiliated Wujiang Hospital of Nantong University, Suzhou, China
| | - Weizhen Song
- Department of Respiratory Medicine, Affiliated Wujiang Hospital of Nantong University, Suzhou, China
| | - Jianan Huang
- Department of Respiratory Medicine, The First Affiliated Hospital of Soochow University, Suzhou, China
| |
Collapse
|
26
|
Chen T, Yang Y. [Role of Circular RNA in Diagnosis, Development and Durg Resistance of Lung Cancer]. ZHONGGUO FEI AI ZA ZHI = CHINESE JOURNAL OF LUNG CANCER 2020; 22:532-536. [PMID: 31451145 PMCID: PMC6717870 DOI: 10.3779/j.issn.1009-3419.2019.08.09] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
肺癌在全球范围内的致死率一直居高不下。近年来针对多种分子分型的靶向药物已成为中晚期肺癌治疗的新有效手段,但是肺癌在早期诊断以及长期有效的治疗上仍然面临着严峻的挑战。环状RNA(circular RNA, circRNA)是一类具有环形结构的独特RNA分子,具有优异的稳定性以及表达特异性。越来越多的研究发现circRNA在肿瘤中表达异常,这种异常表达不仅与肿瘤的恶性相关,同时可以参与调控肿瘤进展,为肿瘤的诊断与治疗提供了新的思路。因此,本文就circRNA在肺癌中的表达、诊断、预后价值以及发生发展机制展开综述,以期为肺癌的早期诊断与治疗寻找新的靶点。
Collapse
Affiliation(s)
- Tianxiang Chen
- Shanghai Lung Cancer Center, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Yunhai Yang
- Shanghai Lung Cancer Center, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai 200030, China
| |
Collapse
|
27
|
Circular RNAs: pivotal molecular regulators and novel diagnostic and prognostic biomarkers in non-small cell lung cancer. J Cancer Res Clin Oncol 2019; 145:2875-2889. [DOI: 10.1007/s00432-019-03045-4] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Accepted: 10/09/2019] [Indexed: 02/07/2023]
|
28
|
Rong X, Gao W, Yang X, Guo J. Downregulation of hsa_circ_0007534 restricts the proliferation and invasion of cervical cancer through regulating miR-498/BMI-1 signaling. Life Sci 2019; 235:116785. [DOI: 10.1016/j.lfs.2019.116785] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Revised: 08/19/2019] [Accepted: 08/20/2019] [Indexed: 12/27/2022]
|
29
|
Circular RNA circ-PRMT5 facilitates non-small cell lung cancer proliferation through upregulating EZH2 via sponging miR-377/382/498. Gene 2019; 720:144099. [PMID: 31479715 DOI: 10.1016/j.gene.2019.144099] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 08/29/2019] [Accepted: 08/30/2019] [Indexed: 02/07/2023]
Abstract
Emerging evidence demonstrates that circular RNA (circRNA) is a novel class of non-coding RNA that plays a pivotal role in cancer. Recently, circ-PRMT5 was identified as an oncogene in bladder cancer. Nevertheless, its contribution to non-small cell lung cancer (NSCLC) is unknown. Herein, we aimed to clarify the biological role of circ-PRMT5 in NSCLC. High circ-PRMT5 expression was identified in NSCLC tissues and cell lines and positively correlated with larger tumor size, advanced clinic stage, lymph node metastasis as well as worse prognosis. Stable knockdown of circ-PRMT5 dramatically weakened the proliferative capacities of NSCLC cells both in vitro and in vivo. Mechanically, circ-PRMT5 could simultaneously effectively sponge three miRNAs (miR-377, miR-382 and miR-498) and alleviate their repression on the well-known oncogenic EZH2, resulting in increased EZH2 expression, thereby facilitating NSCLC progression. Importantly, a strong positive correlation between circ-PRMT5 and EZH2 expression was observed in NSCLC tissues. Overall, our data indicate that circ-PRMT5 is an oncogenic circRNA in NSCLC that can promote the growth of NSCLC via regulation of miR-377/382/498-EZH2 axis.
Collapse
|
30
|
Wang C, Jiang Y, Lei Q, Wu Y, Shao J, Pu D, Li W. Potential Diagnostic and Prognostic Biomarkers of Circular RNAs for Lung Cancer in China. BIOMED RESEARCH INTERNATIONAL 2019; 2019:8023541. [PMID: 31534962 PMCID: PMC6732606 DOI: 10.1155/2019/8023541] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 05/20/2019] [Accepted: 06/10/2019] [Indexed: 02/05/2023]
Abstract
Emerging evidence demonstrated that circular RNAs (circRNAs) were dysregulated in lung cancer, indicating that circRNAs might serve as novel diagnostic and prognostic biomarkers for lung cancer. However, the clinical value of circRNAs on lung cancer remains unclear. This study aimed to evaluate the efficiency of circRNAs in the diagnosis and prognosis for lung cancer in China. 2122 Chinese individuals were enrolled in this investigation for assessment of diagnostic value and examination of prognostic analysis. In the diagnostic analysis, the pooled sensitivity, specificity, PLR, NLR, DOR, and AUC of the sROC curve with their 95% CIs were 0.80 (95%CI: 0.74-0.84), 0.80 (95%CI: 0.73-0.86), 3.97 (95%CI: 2.80-5.62) and 0.26 (95%CI: 0.19-0.34), 15.51 (95%CI: 8.76-24.47), and 0.85 (95%CI: 0.82-0.88), respectively. As for the prognostic power of circRNAs, lung cancer patients with higher expression levels of circRNAs tend to possess lower overall survival with the overall pooled HR (1.70, 95%CI: 1.26-2.29). Furthermore, in stratified analysis, upregulated and downregulated circRNAs were manifested to exert significant effects on prognosis with HR values of 2.17 (95%CI: 1.74-2.72) and 0.52 (95%CI: 0.34-0.80). This study validates that circRNAs are promising diagnostic and predictive biomarkers for lung cancer patients in China.
Collapse
Affiliation(s)
- Chengdi Wang
- Department of Respiratory and Critical Care Medicine, West China Medical School/West China Hospital, Sichuan University, Chengdu, China
| | - Yuting Jiang
- West China Medical School, Sichuan University, Chengdu, China
| | - Qian Lei
- Department of Targeted Tracer Research and Development Laboratory, West China Hospital, Sichuan University, Chengdu, China
| | - Yangping Wu
- Department of Clinical Research Management, West China Hospital, Sichuan University, Chengdu, China
| | - Jun Shao
- Department of Respiratory and Critical Care Medicine, West China Medical School/West China Hospital, Sichuan University, Chengdu, China
| | - Dan Pu
- Clinic Skill Center, West China Hospital, Sichuan University, Chengdu, China
| | - Weimin Li
- Department of Respiratory and Critical Care Medicine, West China Medical School/West China Hospital, Sichuan University, Chengdu, China
| |
Collapse
|
31
|
Hao S, Cong L, Qu R, Liu R, Zhang G, Li Y. Emerging roles of circular RNAs in colorectal cancer. Onco Targets Ther 2019; 12:4765-4777. [PMID: 31354303 PMCID: PMC6590902 DOI: 10.2147/ott.s208235] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2019] [Accepted: 05/14/2019] [Indexed: 12/24/2022] Open
Abstract
Circular RNAs (circRNAs) are a newly discovered class of endogenous non-coding RNAs. Owing to the development of high-throughput sequencing, researchers have identified thousands of circRNAs. Emerging evidence suggests that circRNAs are involved in various tumor cell processes, including proliferation, apoptosis, invasion and migration. Because of their high stability and abundance, tissue-specific expression, and easy detection, circRNAs are considered ideal biomarkers for cancer diagnosis and prognosis. An increasing number of studies have recently demonstrated that circRNAs are closely associated with colorectal cancer (CRC). CRC is the third most common cancer and the second leading cause of cancer-related death globally. Thus, understanding the molecular mechanisms involved in the development and progression of CRC is vital. In this review, we summarize the current literature regarding human circRNAs related to CRC and present an overview of the potential clinical implications of circRNAs with respect to CRC.
Collapse
Affiliation(s)
- Shuhong Hao
- Department of Hematology and Oncology, The Second Hospital of Jilin University, Changchun, Jilin, People's Republic of China
| | - Liang Cong
- Department of Digestive Endoscopy, The Second Hospital of Jilin University, Changchun, Jilin, People's Republic of China
| | - Rongfeng Qu
- Department of Hematology and Oncology, The Second Hospital of Jilin University, Changchun, Jilin, People's Republic of China
| | - Rui Liu
- Department of Hematology and Oncology, The Second Hospital of Jilin University, Changchun, Jilin, People's Republic of China
| | - Guizhen Zhang
- Department of Orthopedics, The Second Hospital of Jilin University, Changchun, Jilin, People's Republic of China
| | - Yarong Li
- Department of Hematology and Oncology, The Second Hospital of Jilin University, Changchun, Jilin, People's Republic of China
| |
Collapse
|
32
|
Qi H, Sun Y, Jiang Y, Li X. Upregulation of circular RNA circ_0000502 predicts unfavorable prognosis in osteosarcoma and facilitates cell progression via sponging miR-1238. J Cell Biochem 2019; 120:8475-8482. [PMID: 30525215 DOI: 10.1002/jcb.28134] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Accepted: 10/31/2018] [Indexed: 01/24/2023]
Abstract
Growing evidence suggests that circular RNAs (circRNAs) play a significant role in regulating cancer initiation and metastasis. Osteosarcoma (OS) is a sophisticated disease with various genes activated or silenced. In this study, we defined a novel cancer-related circRNA, circ_0000502 in OS progression. qRT-PCR was conducted to detect its expression level in OS tissue samples and cell lines. In addition, the clinical significance of circ_0000502 was investigated. Afterwards, gain-of-function and loss-of-function in vitro assays were performed to detect the cell growth, apoptosis, migration, and invasion altered by circ_0000502 by CCK-8, clone-forming, flow cytometry, and transwell experiments. Xenograft study was performed to validate the in vitro data. The luciferase reporter assay was used to explore the mechanism of circ_0000502. Circ_0000502 was identified upregulated in both OS tissue specimens and cells. In addition, its expression predicts clinical severity and unfavorable prognosis in the 63 recruited patients with OS. Circ_0000502 facilitated cell proliferation, migration, and invasion in OS cells and inhibited cell apoptosis. The animal study further confirmed the in vitro results. For mechanism exploration, circ_0000502 could directly sponge microRNA (miR)-1238, and the oncogenic functions of circ_0000502 is partially dependent on its regulation of miR-1238 proved by rescue assays. In summary, this study might help to develop rational predictive and therapeutic target for patients with OS.
Collapse
Affiliation(s)
- Hongfei Qi
- Department of Dermatology, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Yue Sun
- Department of Education, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Yuehong Jiang
- Department of Clinical laboratory, Heilongjiang Provincial Hospital, Harbin, China
| | - Xiaolin Li
- Department of Oncology, Heilongjiang Provincial Hospital, Harbin, China
| |
Collapse
|
33
|
Huang X, Zhang W, Shao Z. Prognostic and diagnostic significance of circRNAs expression in lung cancer. J Cell Physiol 2019; 234:18459-18465. [PMID: 30895620 DOI: 10.1002/jcp.28481] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Revised: 02/11/2019] [Accepted: 02/14/2019] [Indexed: 12/13/2022]
Affiliation(s)
- Xin Huang
- Department of Orthopaedics Union Hospital, Tongji Medical College, Huazhong University of Science and Technology Wuhan China
| | - Weiyue Zhang
- Department of Endocrinology Union Hospital, Tongji Medical College, Huazhong University of Science and Technology Wuhan China
| | - Zengwu Shao
- Department of Orthopaedics Union Hospital, Tongji Medical College, Huazhong University of Science and Technology Wuhan China
| |
Collapse
|
34
|
Yochum ZA, Burns TF. TWIST1 regulation of circRNA: a novel mechanism to promote epithelial-mesenchymal transition in hepatocellular carcinoma. ACTA ACUST UNITED AC 2018; 2. [PMID: 30734026 DOI: 10.21037/ncri.2018.12.01] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Zachary A Yochum
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, PA, USA.,Department of Medicine, Division of Hematology-Oncology, UPMC Hillman Cancer Center, Pittsburgh, PA, USA
| | - Timothy F Burns
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, PA, USA.,Department of Medicine, Division of Hematology-Oncology, UPMC Hillman Cancer Center, Pittsburgh, PA, USA
| |
Collapse
|