1
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Zhao F, Jia Z, Xie H. Identification of a pyroptosis-immune-related lncRNA signature for prognostic and immune landscape prediction in bladder cancer patients. Discov Oncol 2024; 15:140. [PMID: 38695942 PMCID: PMC11065857 DOI: 10.1007/s12672-024-00998-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Accepted: 04/25/2024] [Indexed: 05/05/2024] Open
Abstract
PURPOSE Individualized medicine has become increasingly important in bladder cancer treatment, whereas useful biomarkers for prognostic prediction are still lacking. The current study, therefore, constructed a novel risk model based on pyroptosis- and immune-related long noncoding RNAs (Pyro-Imm lncRNAs) to evaluate the potential prognosis of bladder cancer. METHODS Corresponding data of bladder cancer patients were downloaded from the Cancer Genome Atlas (TCGA) database. The univariate Cox regression analysis, least absolute shrinkage and selection operator (LASSO) regression analysis, and multivariate Cox regression analysis were employed to establish a predictive signature, which was evaluated by receiver operator characteristic (ROC) analysis and Kaplan-Meier analysis. Furthermore, the immune infiltration, immune checkpoints, and responses to chemotherapeutic drugs were analyzed with this model. RESULTS Three Pyro-Imm lncRNAs (MAFG-DT, AC024060.1, AC116914.2) were finally identified. Patients in the low-risk group demonstrated a significant survival advantage. The area under the ROC curve (AUC) at 1, 3, and 5 years was 0.694, 0.709, and 0.736 respectively in the entire cohort. KEGG and GO analyses showed that the Wnt pathway plays a crucial role in the high-risk group. The risk score was significantly related to the degree of infiltration of different immune cells, the expression of multiple immune checkpoint genes, and the sensitivity of various chemotherapeutic drugs. CONCLUSION This novel signature provides a theoretical basis for cancer immunology and chemotherapy, which might help develop individualized therapy.
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Affiliation(s)
- Fuguang Zhao
- Department of Urology, The Third Medical Center, Chinese People's Liberation Army (PLA) General Hospital, Beijing, 100039, People's Republic of China
| | - Zhibo Jia
- School of Medicine, Hebei North University, Zhangjiakou, 075000, People's Republic of China
| | - Hui Xie
- Departments of Urology, the First Affiliated Hospital of Fujian Medical University, Fuzhou, 350005, People's Republic of China.
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2
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Lu S, Zhang X, Cai Z, Xi Z, Wang F, Wang X, Li W, Dai P. Identification of novel lncRNA prognostic biomarkers and their associated ceRNAs in bladder urothelial carcinoma. J Biochem Mol Toxicol 2023; 37:e23441. [PMID: 37393523 DOI: 10.1002/jbt.23441] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 04/19/2023] [Accepted: 06/14/2023] [Indexed: 07/03/2023]
Abstract
Bladder urothelial carcinoma (BUCA) is a common malignant tumor with a high rate of metastasis and recurrence. The lack of specific and sensitive biomarkers for the prognostic assessment makes it important to seek alternatives. Recent studies have demonstrated that long noncoding RNAs (lncRNAs) function as competitive endogenous RNAs (ceRNAs) and play an important role in BUCA prognosis. Therefore, this study aimed to establish a prognosis-related lncRNAs-microRNAs (miRNAs)-messenger RNA (mRNA) (pceRNA) network and identify novel prognostic biomarkers. Integrated weighted coexpression analysis, functional clustering, and ceRNA network were used for the prognostic assessment of BUCA. The transcriptome sequencing datasets of lncRNA, miRNA, and mRNA from The Cancer Genome Atlas database were used for the identification of key lncRNAs and construction of the lncRNAs expression signature for prognostic prediction of BUCA patients. Then, 14 differentially expressed lncRNAs (DE-lncRNAs) were identified as candidate prognostic RNAs based on the ceRNAs network and functional clustering. In the Cox regression analysis, two (AC008676.1 and ADAMTS9-AS1) of all DE-lncRNAs were significantly associated with overall survival (OS) of BUCA patients. This two DE-lncRNA signature was significantly correlated with OS and was an independent prognostic factor, which was confirmed in an independent dataset of GSE216037. Moreover, we constructed the pceRNA network that includes 2 DE-lncRNAs, 9 DE-miRNAs, and 10 DE-mRNAs. Pathway enrichment analysis showed that AC008676.1 and ADAMTS9-AS1 are involved in several cancer-related pathways such as proteoglycans in cancer and TGF-beta signaling pathway. The novel-identified DE-lncRNA prognostic signature and the pceRNA network in this study will be valuable risk predictors and diagnostic markers for BUCA.
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Affiliation(s)
- Sihai Lu
- School of Life Sciences, Northwest University, Xi'an, China
- Shaanxi Lifegen Co. Ltd., Xi'an, China
- National Engineering Research Center for Miniaturized Detection Systems, Northwest University, Xi'an, China
| | | | - Zhiye Cai
- School of Life Sciences, Northwest University, Xi'an, China
| | - Ziyi Xi
- School of Life Sciences, Northwest University, Xi'an, China
| | - Fei Wang
- School of Life Sciences, Northwest University, Xi'an, China
| | - Xuan Wang
- School of Life Sciences, Northwest University, Xi'an, China
| | - Wenqi Li
- School of Life Sciences, Northwest University, Xi'an, China
| | - Penggao Dai
- School of Life Sciences, Northwest University, Xi'an, China
- Shaanxi Lifegen Co. Ltd., Xi'an, China
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3
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Mehmandar-Oskuie A, Jahankhani K, Rostamlou A, Arabi S, Sadat Razavi Z, Mardi A. Molecular landscape of LncRNAs in bladder cancer: From drug resistance to novel LncRNA-based therapeutic strategies. Biomed Pharmacother 2023; 165:115242. [PMID: 37531786 DOI: 10.1016/j.biopha.2023.115242] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 07/25/2023] [Accepted: 07/25/2023] [Indexed: 08/04/2023] Open
Abstract
Bladder cancer (BC) is a common and serious type of cancer that ranks among the top ten most prevalent malignancies worldwide. Due to the high occurrence rate of BC, the aggressive nature of cancer cells, and their resistance to medication, managing this disease has become a growing challenge in clinical care. Long noncoding RNAs (lncRNAs) are a group of RNA transcripts that do not code for proteins and are more than 200 nucleotides in length. They play a significant role in controlling cellular pathways and molecular interactions during the onset, development and progression of different types of cancers. Recent advancements in high-throughput gene sequencing technology have led to the identification of various differentially expressed lncRNAs in BC, which indicate abnormal expression. In this review, we summarize that these lncRNAs have been found to impact several functions related to the development of BC, including proliferation, cell growth, migration, metastasis, apoptosis, epithelial-mesenchymal transition, and chemo- and radio-resistance. Additionally, lncRNAs may improve prognosis prediction for BC patients, indicating a future use for them as prognostic and diagnostic biomarkers for BC patients. This review highlights that genetic tools and anti-tumor agents, such as CRISPR/Cas systems, siRNA, shRNA, antisense oligonucleotides, and vectors, have been created for use in preclinical cancer models. This has led to a growing interest in using lncRNAs based on positive research findings.
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Affiliation(s)
- Amirreza Mehmandar-Oskuie
- Department of Immunology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Kasra Jahankhani
- Department of Immunology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Arman Rostamlou
- Department of Medical Biology, Faculty of Medicine, University of EGE, IZMIR, Turkey
| | - Sepideh Arabi
- Department of Immunology, Faculty of Medicine, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Zahra Sadat Razavi
- Department of Immunology, Faculty of Medical Science, Tarbiat Modares University, Tehran, Iran
| | - Amirhossein Mardi
- Student Research Committee, Tabriz University of Medical Science, Tabriz, Iran; Immunology Research Center, Tabriz University of Medical Science, Tabriz, Iran; Department of Immunology, Faculty of Medicine, Tabriz University of Medical Science, Tabriz, Iran.
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4
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Maharati A, Samsami Y, Latifi H, Tolue Ghasaban F, Moghbeli M. Role of the long non-coding RNAs in regulation of Gemcitabine response in tumor cells. Cancer Cell Int 2023; 23:168. [PMID: 37580768 PMCID: PMC10426205 DOI: 10.1186/s12935-023-03004-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Accepted: 07/26/2023] [Indexed: 08/16/2023] Open
Abstract
Chemotherapy is widely used as one of the first line therapeutic methods in cancer patients. However, chemotherapeutic resistance is one of the most common problems in cancer patients, which leads to the therapeutic failure and tumor relapse. Considering the side effects of chemotherapy drugs in normal tissues, it is required to investigate the molecular mechanisms involved in drug resistance to improve the therapeutic strategies in cancer patients. Long non-coding RNAs (lncRNAs) have pivotal roles in regulation of cellular processes associated with drug resistance. LncRNAs deregulations have been frequently reported in a wide range of chemo-resistant tumors. Gemcitabine (GEM) as a nucleoside analog has a wide therapeutic application in different cancers. However, GEM resistance is considered as a therapeutic challenge. Considering the role of lncRNAs in the occurrence of GEM resistance, in the present review we discussed the molecular mechanisms of lncRNAs in regulation of GEM response among cancer patients. It has been reported that lncRNAs have mainly an oncogenic role as the inducers of GEM resistance through direct or indirect regulation of transcription factors, autophagy, polycomb complex, and signaling pathways such as PI3K/AKT, MAPK, WNT, JAK/STAT, and TGF-β. This review paves the way to present the lncRNAs as non-invasive markers to predict GEM response in cancer patients. Therefore, lncRNAs can be introduced as the efficient markers to reduce the possible chemotherapeutic side effects in GEM resistant cancer patients and define a suitable therapeutic strategy among these patients.
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Affiliation(s)
- Amirhosein Maharati
- Student Research Committee, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Yalda Samsami
- Department of Medical Genetics and Molecular Medicine, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hanieh Latifi
- Student Research Committee, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Faezeh Tolue Ghasaban
- Department of Medical Genetics and Molecular Medicine, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Meysam Moghbeli
- Department of Medical Genetics and Molecular Medicine, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
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5
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Lima APB, da Silva GN. Long Non-Coding RNA and Chemoresistance in Bladder Cancer - A Mini Review. Cancer Invest 2023; 41:164-172. [PMID: 36373675 DOI: 10.1080/07357907.2022.2146703] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Bladder cancer is the 10th most common cancer worldwide. It is a heterogeneous disease, comprising several tumor subtypes with differences in histology, genomic aberrations, prognosis and sensitivity to anti-cancer treatments. Although the treatment of bladder cancer is based tumor classifications and gradings, patients have different clinical response. In recent years, long non-coding RNAs (lncRNAs) were associated with bladder cancer chemoresistance. Thus, lncRNAs seem to be promising targets in treatment of bladder cancer. This review highlights the recent findings concerning lncRNAs and their relevance to the chemoresistance of bladder cancer. This may provide a basis for exploiting more robust therapeutic approaches in the future.
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Affiliation(s)
- Ana Paula Braga Lima
- Programa de Pós-graduação em Ciências Farmacêuticas (CIPHARMA), Universidade Federal de Ouro Preto, Ouro Preto, Minas Gerais, Brazil
| | - Glenda Nicioli da Silva
- Programa de Pós-graduação em Ciências Farmacêuticas (CIPHARMA), Universidade Federal de Ouro Preto, Ouro Preto, Minas Gerais, Brazil.,Programa de Pós-graduação em Ciência Biológicas (CBIOL), Universidade Federal de Ouro Preto, Ouro Preto, Minas Gerais, Brazil.,Departamento de Análises Clínicas (DEACL), Escola de Farmácia, Universidade Federal de Ouro Preto, Ouro Preto, Minas Gerais, Brazil
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6
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Rahmani F, Safavi P, Fathollahpour A, Tanhaye Kalate Sabz F, Tajzadeh P, Arefnezhad M, Ferns GA, Hassanian SM, Avan A. The interplay between non-coding RNAs and Wnt/ß-catenin signaling pathway in urinary tract cancers: from tumorigenesis to metastasis. EXCLI JOURNAL 2022; 21:1273-1284. [PMID: 36483915 PMCID: PMC9727268 DOI: 10.17179/excli2022-5348] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Accepted: 09/26/2022] [Indexed: 01/13/2023]
Abstract
Non-coding RNAs (ncRNAs) are emerging as important regulators in various pathological conditions including tumorigenesis, metastasis, and drug resistance in human cancers. Oncogenic or tumor suppressor ncRNAs exert prominent effects on cell proliferation, migration and invasion in cancer cells through modulating various signaling pathways including Wnt/β-catenin. Upregulation of the oncogenic Wnt/β-catenin pathway was reported to be implicated in multiple human cancers including breast, liver, colorectal, and urothelial cancers. Therefore, identifying interactions between ncRNAs and canonical Wnt signaling components may represent novel therapeutic targets for better treatment and management of cancer. In this review, we summarized the recent findings about miRNA/lncRNA-dependent mechanisms that regulate Wnt/β-catenin signaling involved in tumorigenesis and metastasis of urinary tract cancers.
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Affiliation(s)
- Farzad Rahmani
- Kashmar School of Nursing, Mashhad University of Medical Sciences, Mashhad, Iran,Metabolic Syndrome Research Center, Mashhad University of Medical Sciences, Mashhad, Iran,Basic Medical Sciences Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Pegah Safavi
- Department of Medical Radiation, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | | | | | - Parastoo Tajzadeh
- Kashmar School of Nursing, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohsen Arefnezhad
- Kashmar School of Nursing, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Gordon A. Ferns
- Brighton & Sussex Medical School, Division of Medical Education, Falmer, Brighton, Sussex, UK
| | - Seyed Mahdi Hassanian
- Metabolic Syndrome Research Center, Mashhad University of Medical Sciences, Mashhad, Iran,Basic Medical Sciences Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Amir Avan
- Metabolic Syndrome Research Center, Mashhad University of Medical Sciences, Mashhad, Iran,Basic Medical Sciences Institute, Mashhad University of Medical Sciences, Mashhad, Iran,Medical Genetics Research Center, Mashhad University of Medical Sciences, Mashhad, Iran,*To whom correspondence should be addressed: Amir Avan, Basic Medical Sciences Institute, Mashhad University of Medical Sciences, Mashhad, Iran, E-mail:
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7
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Gao J, Zhu X, Chen H, Jiang H, Shi M, Wei L, Qin X. Long Non-Coding NONRATG001910.2 Promotes the Proliferation of Rat Mesangial Cell Line HBZY-1 Through the miR-339-3p/CTNNB1 Axis. Front Genet 2022; 13:834144. [PMID: 35571052 PMCID: PMC9096093 DOI: 10.3389/fgene.2022.834144] [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] [Accepted: 04/12/2022] [Indexed: 11/13/2022] Open
Abstract
Chronic glomerulonephritis (CGN) is one of the leading causes of end-stage renal disease (ESRD). A growing body of literature emphasizes the important role of long non-coding RNAs (lncRNAs) in the development and progression of the disease. However, the function of NONRATG001910.2 in the development of CGN was not well understood. This research aimed to investigate the effect of NONRATG001910.2 on CGN and revealed its potential molecular mechanisms. In this work, the expression of NONRATG001910.2 was detected by quantitative real-time polymerase chain reaction (qRT-RCR) in cell lines. We found that NONRATG001910.2 was significantly up-regulated in lipopolysaccharide (LPS) induced cells. High NONRATG001910.2 levels were associated with the development of CGN. In addition, NONRATG001910.2 knockdown inhibited cell proliferation and cell cycle. At the same time, we found that up-regulation of microRNA-339-3p (miR-339-3p) abrogated the biological roles of NONRATG001910.2 up-regulation. Moreover, the knockdown of CTNNB1 can upregulate miR-339-3p expression, thereby inhibiting cell proliferation. In conclusion, these results demonstrated that NONRATG001910.2 in LPS-stimulated rat mesangial cell line HBZY-1 (HBZY-1) by targeting miR-339-3p, which subsequently promotes the expression of CTNNB1, and suggested that NONRATG001910.2 may be a potential biomarker.
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Affiliation(s)
- Jiarong Gao
- Department of Pharmacy, The First Affiliated Hospital of Anhui University of Chinese Medicine, Hefei, China
- Anhui Province Key Laboratory of Chinese Medicinal Formula, Hefei, China
| | - Xiaoli Zhu
- Department of Pharmacy, The First Affiliated Hospital of Anhui University of Chinese Medicine, Hefei, China
- College of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
| | - Hao Chen
- Department of Pharmacy, The First Affiliated Hospital of Anhui University of Chinese Medicine, Hefei, China
| | - Hui Jiang
- Department of Pharmacy, The First Affiliated Hospital of Anhui University of Chinese Medicine, Hefei, China
- Anhui Province Key Laboratory of Chinese Medicinal Formula, Hefei, China
| | - Miaomiao Shi
- Department of Pharmacy, The First Affiliated Hospital of Anhui University of Chinese Medicine, Hefei, China
- College of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
| | - Liangbing Wei
- Department of Pharmacy, The First Affiliated Hospital of Anhui University of Chinese Medicine, Hefei, China
| | - Xiujuan Qin
- Department of Pharmacy, The First Affiliated Hospital of Anhui University of Chinese Medicine, Hefei, China
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8
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Gao X, Liu J, Fan D, Li X, Fang Z, Yan K, Fan Y. Berberine enhances gemcitabine‑induced cytotoxicity in bladder cancer by downregulating Rad51 expression through inactivating the PI3K/Akt pathway. Oncol Rep 2021; 47:33. [PMID: 34935059 DOI: 10.3892/or.2021.8244] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Accepted: 10/19/2021] [Indexed: 11/09/2022] Open
Affiliation(s)
- Xinghua Gao
- Department of Urology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, P.R. China
| | - Jikai Liu
- Department of Urology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, P.R. China
| | - Daming Fan
- Department of Pathology, Jinan Central Hospital, Jinan, Shandong 250013, P.R. China
| | - Xiaofeng Li
- Department of Urology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, P.R. China
| | - Zhiqing Fang
- Department of Urology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, P.R. China
| | - Keqiang Yan
- Department of Urology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, P.R. China
| | - Yidong Fan
- Department of Urology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, P.R. China
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9
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Biological functions and clinical significance of long noncoding RNAs in bladder cancer. Cell Death Discov 2021; 7:278. [PMID: 34611133 PMCID: PMC8492632 DOI: 10.1038/s41420-021-00665-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 09/02/2021] [Accepted: 09/17/2021] [Indexed: 12/24/2022] Open
Abstract
Bladder cancer (BCa) is one of the 10 most common cancers with high morbidity and mortality worldwide. Long noncoding RNAs (lncRNAs), a large class of noncoding RNA transcripts, consist of more than 200 nucleotides and play a significant role in the regulation of molecular interactions and cellular pathways during the occurrence and development of various cancers. In recent years, with the rapid advancement of high-throughput gene sequencing technology, several differentially expressed lncRNAs have been discovered in BCa, and their functions have been proven to have an impact on BCa development, such as cell growth and proliferation, metastasis, epithelial-mesenchymal transition (EMT), angiogenesis, and drug-resistance. Furthermore, evidence suggests that lncRNAs are significantly associated with BCa patients' clinicopathological characteristics, especially tumor grade, TNM stage, and clinical progression stage. In addition, lncRNAs have the potential to more accurately predict BCa patient prognosis, suggesting their potential as diagnostic and prognostic biomarkers for BCa patients in the future. In this review, we briefly summarize and discuss recent research progress on BCa-associated lncRNAs, while focusing on their biological functions and mechanisms, clinical significance, and targeted therapy in BCa oncogenesis and malignant progression.
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Li B, Zhang H. Knockdown of microRNA-130b improves doxorubicin sensitivity in bladder urothelial carcinoma by negatively regulating cylindromatosis expression. Arch Med Sci 2021; 17:1038-1043. [PMID: 34336031 PMCID: PMC8314415 DOI: 10.5114/aoms.2019.86622] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 07/25/2018] [Indexed: 11/17/2022] Open
Abstract
INTRODUCTION Chemotherapeutic resistance reduces the sensitivity of bladder urothelial carcinoma (BUC) to chemotherapeutic drugs and contributes a barrier leading to treatment failure. The purpose of this research project is to investigate the regulatory effects of miR-130b on chemotherapeutic drug resistance of BUC and its mechanism. MATERIAL AND METHODS The relative expression of miRNA-130b and cylindromatosis (CYLD) was examined using real-time quantitative PCR. The cell proliferation and doxorubicin sensitivity were detected with the enhanced CCK-8 assay. The specific combination of miR-130b and CYLD was verified with the luciferase reporter gene assay. Protein expression was detected by Western blot. RESULTS Our study found that miR-130b was up-regulated in doxorubicin-insensitive BUC tissues and cell lines, and its high expression was negatively related to doxorubicin sensitivity in BUC. The miR-130b knockdown reduced the IC50 of doxorubicin and improved doxorubicin sensitivity of J82/Dox and T24/Dox cells. For the regulation mechanism analysis of miR-130b, bioinformatics analysis software was used to predict the potential targets of miR-130b, including the CYLD gene. The following luciferase activities assay, quantitative real time-PCR and western blot identified the CYLD gene as a target of miR-130b. Knockdown of CYLD reversed miR-130b's regulatory roles in doxorubicin sensitivity in J82/Dox and T24/Dox cells. CONCLUSIONS High expression of miR-130b is negatively related to doxorubicin sensitivity in BUC, and knockdown of miR-130b improves doxorubicin sensitivity in BUC by negatively regulating CYLD expression. Our findings will provide guidance for the clinical chemotherapy of BUC.
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Affiliation(s)
- Bo Li
- China Medical University, Shenyang, China
| | - Hui Zhang
- China Medical University, Shenyang, China
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11
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Wu G, Weng W, Xia P, Yan S, Zhong C, Xie L, Xie Y, Fan G. Wnt signalling pathway in bladder cancer. Cell Signal 2020; 79:109886. [PMID: 33340660 DOI: 10.1016/j.cellsig.2020.109886] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 12/13/2020] [Accepted: 12/14/2020] [Indexed: 12/17/2022]
Abstract
Bladder cancer (BC) is one of the most common tumours of the urinary system and is also known as a highly malignant tumour. In addition to conventional diagnosis and treatment methods, recent research has focused on studying the molecular mechanisms related to BC, in the hope that new, less toxic and effective targeted anticancer drugs and new diagnostic markers can be discovered. It is known that the Wingless (Wnt) signalling pathway and its related genes, proteins and other substances are involved in multiple biological processes of various tumours. Clarifying the contribution of the Wnt signalling pathway in bladder tumours will help establish early diagnosis indicators, develop new therapeutic drugs and evaluate the prognosis for BC. This review aims to summarise previous studies related to BC and the Wnt signalling pathway, with a focus on exploring the participating substances and their mechanisms in the regulation of the Wnt signalling pathway to better determine how to promote new chemotherapeutic drugs, potential therapeutic targets and diagnostic biomarkers.
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Affiliation(s)
- Guanlin Wu
- Experimental and Clinical Research Center, Charité-Universitätsmedizin Berlin, Berlin 13125, Germany; Max Delbrück Center for Molecular Medicine (MDC) in the Helmholtz Association, Berlin 13125, Germany.
| | - Weidong Weng
- Siegfried Weller Research Institute, BG Unfallklinik Tübingen, Department of Trauma and Reconstructive Surgery, University of Tübingen, Schnarrenbergstr. 95, Tübingen D-72076, Germany.
| | - Pengfei Xia
- Experimental and Clinical Research Center, Charité-Universitätsmedizin Berlin, Berlin 13125, Germany; Max Delbrück Center for Molecular Medicine (MDC) in the Helmholtz Association, Berlin 13125, Germany.
| | - Shixian Yan
- Experimental and Clinical Research Center, Charité-Universitätsmedizin Berlin, Berlin 13125, Germany; Max Delbrück Center for Molecular Medicine (MDC) in the Helmholtz Association, Berlin 13125, Germany.
| | - Cheng Zhong
- Experimental and Clinical Research Center, Charité-Universitätsmedizin Berlin, Berlin 13125, Germany; Institute of Vegetative Physiology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin 10117, Germany.
| | - Lei Xie
- Department of Urology, Huazhong University of Science and Technology Union Shenzhen Hospital, Shenzhen 518052, China.
| | - Yu Xie
- Department of Urology, the Affiliated Cancer Hospital of Xiangya School of Medicine of Central South University, Hunan Cancer Hospital, Changsha, Hunan 410013, China.
| | - Gang Fan
- Department of Urology, Huazhong University of Science and Technology Union Shenzhen Hospital, Shenzhen 518052, China; Department of Urology, the Affiliated Cancer Hospital of Xiangya School of Medicine of Central South University, Hunan Cancer Hospital, Changsha, Hunan 410013, China; The 6th Affiliated Hospital of Shenzhen University Health Science Center, Shenzhen 518060, China.
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12
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Non coding RNAs as the critical factors in chemo resistance of bladder tumor cells. Diagn Pathol 2020; 15:136. [PMID: 33183321 PMCID: PMC7659041 DOI: 10.1186/s13000-020-01054-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 11/05/2020] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Bladder cancer (BCa) is the ninth frequent and 13th leading cause of cancer related deaths in the world which is mainly observed among men. There is a declining mortality rates in developed countries. Although, the majority of BCa patients present Non-Muscle-Invasive Bladder Cancer (NMIBC) tumors, only 30% of patients suffer from muscle invasion and distant metastases. Radical cystoprostatectomy, radiation, and chemotherapy have proven to be efficient in metastatic tumors. However, tumor relapse is observed in a noticeable ratio of patients following the chemotherapeutic treatment. Non-coding RNAs (ncRNAs) are important factors during tumor progression and chemo resistance which can be used as diagnostic and prognostic biomarkers of BCa. MAIN BODY In present review we summarized all of the lncRNAs and miRNAs associated with chemotherapeutic resistance in bladder tumor cells. CONCLUSIONS This review paves the way of introducing a prognostic panel of ncRNAs for the BCa patients which can be useful to select a proper drug based on the lncRNA profiles of patients to reduce the cytotoxic effects of chemotherapy in such patients.
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Zou J, Su H, Zou C, Liang X, Fei Z. Ginsenoside Rg3 suppresses the growth of gemcitabine-resistant pancreatic cancer cells by upregulating lncRNA-CASC2 and activating PTEN signaling. J Biochem Mol Toxicol 2020; 34:e22480. [PMID: 32104955 DOI: 10.1002/jbt.22480] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2019] [Revised: 01/22/2020] [Accepted: 02/14/2020] [Indexed: 12/11/2022]
Abstract
Pancreatic cancer is one of the most fatal malignancies with high mortality. Gemcitabine (GEM)-based chemotherapy is the most important treatment. However, the development of GEM resistance leads to chemotherapy failure. Previous studies demonstrated the anticancer activity of ginsenoside Rg3 in a variety of carcinomas through modulating multiple signaling pathways. In the present study, 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide assay, colony formation assay, flow cytometry apoptosis assay, Western blotting assay, xenograft experiment, and immunohistochemistry assay were performed in GEM-resistant pancreatic cancer cell lines. Ginsenoside Rg3 inhibited the viability of GEM-resistant pancreatic cancer cells in a time-dependent and concentration-dependent manner through induction of apoptosis. The level of long noncoding RNA cancer susceptibility candidate 2 (CASC2) and PTEN expression was upregulated by the ginsenoside Rg3 treatment, and CASC2/PTEN signaling was involved in the ginsenoside Rg3-induced cell growth suppression and apoptosis in GEM-resistant pancreatic cancer cells. Ginsenoside Rg3 could be an effective anticancer agent for chemoresistant pancreatic cancer.
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Affiliation(s)
- Jifeng Zou
- Department of Oncology, The First People's Hospital of Pinghu, Pinghu, China
| | - Huafang Su
- Department of Radiation and Medical Oncology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Changling Zou
- Department of Radiation and Medical Oncology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Xiaodong Liang
- Department of Pathology, Yancheng Hospital Affiliated Southeast University, Yancheng, China
| | - Zhenghua Fei
- Department of Radiation and Medical Oncology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
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14
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Silence of FAM83H-AS1 promotes chemosensitivity of gastric cancer through Wnt/β-catenin signaling pathway. Biomed Pharmacother 2020; 125:109961. [PMID: 32028241 DOI: 10.1016/j.biopha.2020.109961] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 01/18/2020] [Accepted: 01/23/2020] [Indexed: 02/07/2023] Open
Abstract
Gastric cancer (GC) is a malignant tumor originated from the epithelium of gastric mucosa, its incidence is second only to lung cancer in China. Chemotherapy is one of the most effective methods to treat GC, but some patients are insensitive to chemotherapeutic drugs, leading to chemotherapy failure. In this study, the expression of FAM83H-AS1 was up-regulated in GC tissues and cell lines, and was related to differentiation, invasion depth and chemotherapy insensitivity of GC patients. FAM83H-AS1 was high-expressed in chemoresistant GC tissues and cell line (SGC7901/R), and silence of FAM83H-AS1 sensitized SGC7901/R cells to cisplatin (CDDP) and 5-fluorouracil (5-FU). In addition, silence of FAM83H-AS1 could inactivate Wnt/β-catenin signaling pathway in SGC7901/R cells. The activating of Wnt/β-catenin signaling pathway reversed the promoting effect of FAM83H-AS1 silence on chemotherapy sensitivity, which meant Wnt/β-catenin signaling pathway mediated the regulation of FAM83H-AS1 on chemotherapy sensitivity in SGC7901/R cells. In conclusion, FAM83H-AS1 is related with the CDDP and 5-FU insensitivity of GC patients, silence of FAM83H-AS1 promotes chemosensitivity of GC through Wnt/β-catenin signaling pathway.
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15
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Xie F, Zhao N, Zhang H, Xie D. Circular RNA CircHIPK3 Promotes Gemcitabine Sensitivity in Bladder Cancer. J Cancer 2020; 11:1907-1912. [PMID: 32194801 PMCID: PMC7052855 DOI: 10.7150/jca.39722] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Accepted: 12/22/2019] [Indexed: 12/15/2022] Open
Abstract
Purpose: Recent studies showed circular RNA (circRNA) played important regulatory roles in tumors, including genesis of chemotherapy resistance. In this study, the role of circHIPK3 on chemotherapy resistance of bladder cancer (BC) will be clarified. Methods: Real-time quantitative PCR was applied to examine the circHIPK3 expression. The gemcitabine sensitivity and cell proliferation viability were analyzed by Cell Counting Kit-8 assay. Double-stained flow cytometry was used to detect the cell apoptosis. Results: In BC tissues and cell lines, the circHIPK3 expression was down-regulated. Its expression had a negative correlation with pathological grade, lymph node metastasis and gemcitabine insensitivity of BC patients. CircHIPK3 was a independent prognostic biomarker for BC patients. The expression of circHIPK3 in T24/gem and J82/gem cell lines (resistant to gemcitabine) was down-regulated significantly. The over-expression of circHIPK3 decreased IC50 of gemcitabine and promoted gemcitabine's cytotoxicity in T24/gem and J82/gem cells. Conclusions: The circHIPK3 is low-expressed in BC and is an independent prognostic biomarker for BC patients. The low-expression of circHIPK3 is associated with the insensitivity to gemcitabine of BC patients, over-expression of circHIPK3 promotes gemcitabine sensitivity in BC.
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Affiliation(s)
- Fang Xie
- Medical Basic Experimental Teaching Center, China Medical University, Shenyang, 110122, China
| | - Ning Zhao
- Surgery Laboratory, Affiliated First Hospital, China Medical University, Shenyang, 110001, China
| | - Hui Zhang
- Department of Urinary surgery, Shengjing Hospital, China Medical University, Shenyang, 110004, China
| | - Dalong Xie
- Department of Anatomy, College of Basic Medicine, China Medical University, Shenyang, 110122, China
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16
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Xu R, Han Y. Long non-coding RNA FOXF1 adjacent non-coding developmental regulatory RNA inhibits growth and chemotherapy resistance in non-small cell lung cancer. Arch Med Sci 2019; 15:1539-1546. [PMID: 31749883 PMCID: PMC6855145 DOI: 10.5114/aoms.2019.86707] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2017] [Accepted: 07/04/2017] [Indexed: 12/21/2022] Open
Abstract
INTRODUCTION Lung cancer is one of the most common malignant neoplasms around the globe. Its most common type is non-small cell lung cancer (NSCLC). The FOXF1 adjacent non-coding developmental regulatory RNA (FENDRR) gene is an lncRNA which has been reported to show low expression and a tumor suppressor role in NSCLC. MATERIAL AND METHODS The expression of FENDRR in NSCLC patients' tissues and cell line was detected by quantitative real-time PCR. MTT assay was used to detect cell proliferation and chemotherapy resistance. Cell apoptosis was measured by flow cytometry. RESULTS The expression of FENDRR was low in NSCLC tissues and cells in contrast to control tissues and cells, and low FENDRR expression correlated with high TNM stages and poor differentiation of NSCLC, and could be a promising prognostic factor for NSCLC. FENDRR enhancement could inhibit the proliferation ability and advance cell apoptosis of A549 cells. The expression of FENDRR in NSCLC tissues and cells insensitive to cisplatin was much lower than that in NSCLC tissues and cells sensitive to cisplatin. The chemotherapy resistance to cisplatin of A549/DDP cells was depressed by FENDRR enhancement, and IC50 for cisplatin presented a conspicuous depression. FENDRR up-regulation inhibited cell viability of A549/DDP cells under treatment with 5 µg/ml DDP. TCGA Pan-Cancer (PANCAN) showed that the expression of FENDRR was negatively correlated with the expression of ABCC10 in lung cancer, and our western blot found that FENDRR up-regulation inhibited the expression of ABCC10 in A549/DDP cells. CONCLUSIONS LncRNA FENDRR has low expression in NSCLC and functions as a potential tumor-suppressing gene to inhibit growth and chemotherapy resistance of NSCLC cells.
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Affiliation(s)
- Ran Xu
- Department of Thoracic Surgery, Shengjing Hospital, China Medical University, Shenyang, Liaoning, China
| | - Yun Han
- Department of Thoracic Surgery, Shengjing Hospital, China Medical University, Shenyang, Liaoning, China
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17
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Long non-coding RNAs as regulators of Wnt/β catenin pathway. GENE REPORTS 2019. [DOI: 10.1016/j.genrep.2019.100404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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18
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Li B, Xie D, Zhang H. MicroRNA-101-3p advances cisplatin sensitivity in bladder urothelial carcinoma through targeted silencing EZH2. J Cancer 2019; 10:2628-2634. [PMID: 31258770 PMCID: PMC6584933 DOI: 10.7150/jca.33117] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Accepted: 04/10/2019] [Indexed: 02/06/2023] Open
Abstract
Objective: Chemotherapy is a major therapeutic method for bladder urothelial carcinoma (BUC), which can effectively improve the prognosis of BUC patients, but the chemoresistance often leads to chemotherapy failure. This study will research the regulatory roles and molecular mechanism of miR-101-3p in BUC chemoresistance. Materials and Methods: The quantitative real-time PCR was used to detect the expression of miRNA-101-3p and EZH2. The proliferation and chemoresistance were analyzed by CCK8 assay. Luciferase reporter assay was used to verify the combination between miR-101-3p and EZH2. Protein expression was detected by Western blotting. Flow cytometry was used to examine apoptosis rate. Results: The miR-101-3p expression was down-regulated in cisplatin (CDDP) resistant BUC cell line (T24/CDDP) and tissues, and was positively related to sensitivity of BUC to CDDP. In T24/CDDP cells, the up-regulation of miR-101-3p decreased the half maximal inhibitory concentration (IC50) to CDDP, depressed the expression of MRP1 protein, promote the CDDP-induced cytotoxicity, and advanced CDDP sensitivity. A series of in vitro experiments certified the EZH2 gene was a target gene of miR-101-3p, including luciferase reporter assay, western blotting and so on. Up-regulation of EZH2 largely reversed the regulatory effects of miR-101-3p enhancement on CDDP sensitivity in T24/CDDP cells. Conclusion: The expression of miR-101-3p is positively related to CDDP sensitivity of BUC, miR-101-3p advances sensitivity of BUC to CDDP through targeted silencing EZH2.
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Affiliation(s)
- Bo Li
- Department of Urinary surgery, Shengjing Hospital, China Medical University, Shenyang, Liaoning, China
| | - Dalong Xie
- Department of Anatomy, College of Basic Medicine, China Medical University, Shenyang, Liaoning, China
| | - Hui Zhang
- Department of Urinary surgery, Shengjing Hospital, China Medical University, Shenyang, Liaoning, China
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19
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Li B, Xie D, Zhang H. Long non-coding RNA GHET1 contributes to chemotherapeutic resistance to Gemcitabine in bladder cancer. Cancer Chemother Pharmacol 2019; 84:187-194. [PMID: 31115606 DOI: 10.1007/s00280-019-03873-8] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Accepted: 05/14/2019] [Indexed: 02/06/2023]
Abstract
PURPOSE Bladder cancer (BC) ranks first in the incidence of urogenital tumors in China and second only to prostate cancer in the West. This study will clarify the roles and mechanism of lncRNA GHET1 in chemotherapeutic resistance of BC to Gemcitabine. METHODS The expression of GHET1 was examined using real-time quantitative PCR. Cell Counting Kit-8 assay was applied to analyze cell proliferation and Gemcitabine sensitivity. Cell apoptosis was detected using Annexin V-FITC/PI double-stained flow cytometry. The expression of ABCC1 protein was examined using Western blotting. RESULTS Firstly, the expression of GHET1 was up-regulated in BC, its high expression was relevant to high grade and muscle invasion of BC patients. Secondly, high expression of GHET1 was related to low Gemcitabine sensitivity of BC patients, and GHET1 was highly expressed in Gemcitabine-resistant BC cell lines. Thirdly, knockdown of GHET1 decreased the IC50 of Gemcitabine in Gemcitabine-resistant BC cell lines and advanced the Gemcitabine-induced cytotoxicity; GHET1 promoted Gemcitabine resistance in BC. Finally, knockdown of GHET1 also inhibited the expression of ABCC1 protein in Gemcitabine-resistant BC cells. CONCLUSIONS High expression of GHET1 was related with the low sensitivity to Gemcitabine of BC; GHET1 contributed to chemotherapeutic resistance to Gemcitabine in BC through up-regulating ABCC1 expression. Our findings are helpful to expound the molecular mechanism of chemotherapeutic resistance in BC.
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Affiliation(s)
- Bo Li
- Department of Urinary Surgery, Shengjing Hospital, China Medical University, No. 36 Sanhao Street, Heping Area, Shenyang, 100004, China
| | - Dalon Xie
- Department of Anatomy, College of Basic Medical Science, China Medical University, Shenyang, 110001, China
| | - Hui Zhang
- Department of Urinary Surgery, Shengjing Hospital, China Medical University, No. 36 Sanhao Street, Heping Area, Shenyang, 100004, China.
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20
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Hu X, Hong Y, Shang C. Knockdown of long non-coding RNA SNHG5 inhibits malignant cellular phenotypes of glioma via Wnt/CTNNB1 signaling pathway. J Cancer 2019; 10:1333-1340. [PMID: 30854143 PMCID: PMC6400671 DOI: 10.7150/jca.29517] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Accepted: 01/03/2019] [Indexed: 12/12/2022] Open
Abstract
Objective: Human brain glioma is the most malignant primary intracranial tumor, which has poor prognosis and high mortality. Long noncoding RNAs are considered to take part in cellular phenotypes and are emerging as diagnostic and prognostic biomarkers of glioma. This study will research the effects of Small Nucleolar RNA Host Gene 5 (SNHG5) gene on malignant cellular phenotypes in glioma and explore the possible mechanisms. Materials and Methods: The expression level of SNHG5 was examined using quantitative Real-time PCR in glioma tissues and cell lines. Loss-of-function experiments of SNHG5 together with Enhanced Cell Counting Kit-8, flow cytometry and cell invasion assay were used to investigate the effects of SNHG5 on malignant cellular phenotypes of glioma cells. Finally, luciferase assay and western blotting were applied to determine the activity of WNT/CTNNB1 signaling pathway. Results: SNHG5 gene was high-expressed in glioma tissues and cell lines. Knockdown of SNHG5 gene depressed cell proliferation and invasiveness as well as promoted the apoptosis of U251 and U87 cells. In addition, online database analysis showed SNHG5 was closely related to Wnt/CTNNB1 signaling pathway. Knockdown of SNHG5 inactivated Wnt/CTNNB1 signaling pathway, and the activating of Wnt/CTNNB1 signaling pathway partly restored the influences of SNHG5 knockdown on malignant cellular phenotypes of U251 and U87 cells. Conclusion: SNHG5 gene was high-expressed in glioma, knockdown of SNHG5 inhibits malignant cellular phenotypes of glioma via Wnt/CTNNB1 signaling pathway.
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Affiliation(s)
- Xuanhao Hu
- Department of Neurobiology, School of Life Science, China Medical University, Shenyang, Liaoning, China
| | - Yang Hong
- Department of Neurosurgery, Shengjing Hospital, China Medical University, Shenyang, Liaoning, China
| | - Chao Shang
- Department of Neurobiology, School of Life Science, China Medical University, Shenyang, Liaoning, China
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21
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Yang C, Wu S, Wu X, Zhou X, Jin S, Jiang H. Silencing circular RNA UVRAG inhibits bladder cancer growth and metastasis by targeting the microRNA-223/fibroblast growth factor receptor 2 axis. Cancer Sci 2018; 110:99-106. [PMID: 30387298 PMCID: PMC6317955 DOI: 10.1111/cas.13857] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 10/29/2018] [Accepted: 10/30/2018] [Indexed: 12/19/2022] Open
Abstract
Circular RNA UVRAG (circUVRAG), a type of non-coding RNA, is derived and cyclized by part of the exon from the UVRAG gene. However, the role of circUVRAG in bladder cancer (BLCA) has not been reported. The purpose of the present study was therefore to characterize the role of circUVRAG in BLCA. Bioinformatics analysis showed interactive relationships among circUVRAG, microRNA-223 (miR-223), and fibroblast growth factor receptor 2 (FGFR2). Quantitative real-time PCR was used to detect the expression of circUVRAG in BLCA cell lines. UM-UC-3 cells were stably transfected with siRNA against circUVRAG, and cell proliferation and migration ability were tested using the CCK8 assay, clone formation, and Transwell assays in vitro. Tumor xenograft formation and metastasis were determined using nude mice. Fluorescence in situ hybridization was used to confirm the subcellular localization of circUVRAG, and the luciferase reporter assay was used to confirm the relationships among circUVRAG, miR-223, and FGFR2. Results showed that circUVRAG was upregulated in BLCA cell lines. Downregulation of circUVRAG expression suppressed proliferation and metastasis both in vitro and in vivo. Downregulation of circUVRAG suppressed FGFR2 expression by "sponging" miR-223, which was confirmed by rescue experiments and luciferase reporter assay. Overall, the results showed that downregulation of circUVRAG suppressed the aggressive biological phenotype of BLCA. Taken together, silencing circular RNA UVRAG inhibited bladder cancer growth and metastasis by targeting the miR-223/FGFR2 axis, which may provide a potential biomarker and therapeutic target for the management of BLCA.
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Affiliation(s)
- Chen Yang
- Department of Urology, Huashan Hospital, Fudan University, Shanghai, China.,Fudan Institute of Urology, Huashan Hospital, Fudan University, Shanghai, China
| | - Siqi Wu
- Department of Urology, Huashan Hospital, Fudan University, Shanghai, China.,Fudan Institute of Urology, Huashan Hospital, Fudan University, Shanghai, China
| | - Xiaobo Wu
- Department of Urology, Huashan Hospital, Fudan University, Shanghai, China.,Fudan Institute of Urology, Huashan Hospital, Fudan University, Shanghai, China
| | - Xuejian Zhou
- Department of Urology, The Fifth People's Hospital of Shanghai, Shanghai, China
| | - Shengming Jin
- Fudan University Shanghai Cancer Center, Shanghai, China
| | - Haowen Jiang
- Department of Urology, Huashan Hospital, Fudan University, Shanghai, China.,Fudan Institute of Urology, Huashan Hospital, Fudan University, Shanghai, China
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