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Ørbeck SV, Jakobsen T, García-Rodríguez JL, Burton M, Rasmussen LG, Ewald JD, Fristrup CW, Pfeiffer P, Mortensen MB, Kristensen LS, Detlefsen S. Exploring the prognostic value of circular RNAs in pancreatic ductal adenocarcinoma using genome-wide expression profiling. Pancreatology 2024; 24:706-718. [PMID: 38724419 DOI: 10.1016/j.pan.2024.04.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Revised: 04/16/2024] [Accepted: 04/18/2024] [Indexed: 07/15/2024]
Abstract
BACKGROUND/OBJECTIVES Median survival of pancreatic ductal adenocarcinoma (PDAC) is around eight months and new prognostic tools are needed. Circular RNAs (circRNAs) have gained interest in different types of cancer. However, only a few studies have evaluated their potential in PDAC. We aimed to identify the most differentially expressed circRNAs in PDAC compared to controls and to explore their potential as prognostic markers. METHODS Using frozen specimens with PDAC and controls, we performed RNA sequencing and identified 20,440 unique circRNAs. A custom code set of capture- and reporter probes for NanoString nCounter analysis was designed to target 152 circRNAs, based on abundancy, differential expression and a literature study. Expression of these 152 circRNAs was examined in 108 formalin-fixed and paraffin-embedded surgical PDAC specimens and controls. The spatial expression of one of the most promising candidates, ciRS-7 (hsa_circ_0001946), was evaluated by chromogenic in situ hybridization (CISH) using multi-punch tissue microarrays (TMAs) and digital imaging analysis. RESULTS Based on circRNA expression profiles, we identified different PDAC subclusters. The 30 most differentially expressed circRNAs showed log2 fold changes from -3.43 to 0.94, where circNRIP1 (hsa_circ_0004771), circMBOAT2 (hsa_circ_0007334) and circRUNX1 (hsa_circ_0002360) held significant prognostic value in multivariate analysis. CiRS-7 was absent in PDAC cells but highly expressed in the tumor microenvironment. CONCLUSIONS We identified several new circRNAs with biomarker potential in surgically treated PDAC, three of which showed an independent prognostic value. We also found that ciRS-7 is absent in cancer cells but abundant in tumor microenvironment and may hold potential as marker of activated stroma.
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Affiliation(s)
- Siri Vreim Ørbeck
- Department of Pathology, Odense University Hospital, Odense, Denmark; Odense Pancreas Center (OPAC), Odense University Hospital, Odense, Denmark; Department of Clinical Research, Faculty of Health Sciences, University of Southern Denmark, Odense, Denmark
| | | | | | - Mark Burton
- Department of Clinical Research, Faculty of Health Sciences, University of Southern Denmark, Odense, Denmark; Department of Clinical Genetics, Odense University Hospital, Odense, Denmark; Clinical Genome Center, University of Southern Denmark, Odense, Denmark
| | - Lukas Gammelgaard Rasmussen
- Department of Pathology, Odense University Hospital, Odense, Denmark; Odense Pancreas Center (OPAC), Odense University Hospital, Odense, Denmark
| | - Jesper Dupont Ewald
- Department of Pathology, Odense University Hospital, Odense, Denmark; Department of Clinical Research, Faculty of Health Sciences, University of Southern Denmark, Odense, Denmark
| | - Claus Wilki Fristrup
- Odense Pancreas Center (OPAC), Odense University Hospital, Odense, Denmark; Department of Surgery, Odense University Hospital, Odense, Denmark
| | - Per Pfeiffer
- Odense Pancreas Center (OPAC), Odense University Hospital, Odense, Denmark; Department of Clinical Research, Faculty of Health Sciences, University of Southern Denmark, Odense, Denmark; Department of Oncology, Odense University Hospital, Odense, Denmark
| | - Michael Bau Mortensen
- Odense Pancreas Center (OPAC), Odense University Hospital, Odense, Denmark; Department of Clinical Research, Faculty of Health Sciences, University of Southern Denmark, Odense, Denmark; Department of Surgery, Odense University Hospital, Odense, Denmark
| | | | - Sönke Detlefsen
- Department of Pathology, Odense University Hospital, Odense, Denmark; Odense Pancreas Center (OPAC), Odense University Hospital, Odense, Denmark; Department of Clinical Research, Faculty of Health Sciences, University of Southern Denmark, Odense, Denmark.
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Thamjamrassri P, Ariyachet C. Circular RNAs in Cell Cycle Regulation of Cancers. Int J Mol Sci 2024; 25:6094. [PMID: 38892280 PMCID: PMC11173060 DOI: 10.3390/ijms25116094] [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: 04/28/2024] [Revised: 05/26/2024] [Accepted: 05/29/2024] [Indexed: 06/21/2024] Open
Abstract
Cancer has been one of the most problematic health issues globally. Typically, all cancers share a common characteristic or cancer hallmark, such as sustaining cell proliferation, evading growth suppressors, and enabling replicative immortality. Indeed, cell cycle regulation in cancer is often found to be dysregulated, leading to an increase in aggressiveness. These dysregulations are partly due to the aberrant cellular signaling pathway. In recent years, circular RNAs (circRNAs) have been widely studied and classified as one of the regulators in various cancers. Numerous studies have reported that circRNAs antagonize or promote cancer progression through the modulation of cell cycle regulators or their associated signaling pathways, directly or indirectly. Mostly, circRNAs are known to act as microRNA (miRNA) sponges. However, they also hold additional mechanisms for regulating cellular activity, including protein binding, RNA-binding protein (RBP) recruitment, and protein translation. This review will discuss the current knowledge of how circRNAs regulate cell cycle-related proteins through the abovementioned mechanisms in different cancers.
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Affiliation(s)
- Pannathon Thamjamrassri
- Department of Biochemistry, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand;
- Center of Excellence in Hepatitis and Liver Cancer, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
- Medical Biochemistry Program, Department of Biochemistry, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
| | - Chaiyaboot Ariyachet
- Department of Biochemistry, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand;
- Center of Excellence in Hepatitis and Liver Cancer, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
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Yi J, Ma X, Ying Y, Liu Z, Tang Y, Shu X, Sun J, Wu Y, Lu D, Wang X, Luo J, Liu B, Zheng X, Lin Y, Li J, Xie L. N6-methyladenosine-modified CircPSMA7 enhances bladder cancer malignancy through the miR-128-3p/MAPK1 axis. Cancer Lett 2024; 585:216613. [PMID: 38211649 DOI: 10.1016/j.canlet.2024.216613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Revised: 12/15/2023] [Accepted: 12/21/2023] [Indexed: 01/13/2024]
Abstract
Several studies have indicated that circular RNAs (circRNAs) play vital roles in the progression of various diseases, including bladder cancer (BCa). However, the underlying mechanisms by which circRNAs drive BCa malignancy remain unclear. In this study, we identified a novel circRNA, circPSMA7 (circbaseID:has_circ_0003456), showing increased expression in BCa cell lines and tissues, by integrating the reported information with circRNA-seq and qRT-PCR. We revealed that circPSMA7 is associated with a higher tumor grade and stage in BCa. M6A modification was identified in circPSMA7, and IGF2BP3 recognized this modification and stabilized circPSMA7, subsequently increasing the circPSMA7 expression. In vitro and in vivo experiments showed that circPSMA7 promoted BCa proliferation and metastasis by regulating the cell cycle and EMT processes. CircPSMA7 acted as a sponge for miR-128-3p, which showed antitumor effects in BCa cell lines, increasing the expression of MAPK1. The tumor proliferation and metastasis suppression induced by silencing circPSMA7 could be partly reversed by miR-128-3p inhibition. Thus, the METTL3/IGF2BP3/circPSMA7/miR-128-3p/MAPK1 axis plays a critical role in BCa progression. Furthermore, circPSMA7 may be a potential diagnostic biomarker and novel therapeutic target for patients with BCa.
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Affiliation(s)
- Jiahe Yi
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China; Cancer Center, Zhejiang University, Hangzhou, 310058 China
| | - Xueyou Ma
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China; Cancer Center, Zhejiang University, Hangzhou, 310058 China
| | - Yufan Ying
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China; Cancer Center, Zhejiang University, Hangzhou, 310058 China
| | - Zixiang Liu
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China; Cancer Center, Zhejiang University, Hangzhou, 310058 China
| | - Yijie Tang
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China; Cancer Center, Zhejiang University, Hangzhou, 310058 China
| | - Xuan Shu
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China; Cancer Center, Zhejiang University, Hangzhou, 310058 China
| | - Jiazhu Sun
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China; Cancer Center, Zhejiang University, Hangzhou, 310058 China
| | - Yuqing Wu
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China; Cancer Center, Zhejiang University, Hangzhou, 310058 China
| | - Dingheng Lu
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China; Cancer Center, Zhejiang University, Hangzhou, 310058 China
| | - Xiao Wang
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China; Cancer Center, Zhejiang University, Hangzhou, 310058 China
| | - Jindan Luo
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China; Cancer Center, Zhejiang University, Hangzhou, 310058 China
| | - Ben Liu
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China; Cancer Center, Zhejiang University, Hangzhou, 310058 China
| | - Xiangyi Zheng
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China; Cancer Center, Zhejiang University, Hangzhou, 310058 China
| | - Yiwei Lin
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China; Cancer Center, Zhejiang University, Hangzhou, 310058 China.
| | - Jiangfeng Li
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China; Cancer Center, Zhejiang University, Hangzhou, 310058 China.
| | - Liping Xie
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China; Cancer Center, Zhejiang University, Hangzhou, 310058 China.
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Hosseiniyan Khatibi SM, Zununi Vahed S, Homaei Rad H, Emdadi M, Akbarpour Z, Teshnehlab M, Pirmoradi S, Alizadeh E. Uncovering key molecular mechanisms in the early and late-stage of papillary thyroid carcinoma using association rule mining algorithm. PLoS One 2023; 18:e0293335. [PMID: 37917782 PMCID: PMC10621943 DOI: 10.1371/journal.pone.0293335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 10/10/2023] [Indexed: 11/04/2023] Open
Abstract
OBJECTIVE Thyroid Cancer (TC) is the most frequent endocrine malignancy neoplasm. It is the sixth cause of cancer in women worldwide. The treatment process could be expedited by identifying the controlling molecular mechanisms at the early and late stages, which can contribute to the acceleration of treatment schemes and the improvement of patient survival outcomes. In this work, we study the significant mRNAs through Machine Learning Algorithms in both the early and late stages of Papillary Thyroid Cancer (PTC). METHOD During the course of our study, we investigated various methods and techniques to obtain suitable results. The sequence of procedures we followed included organizing data, using nested cross-validation, data cleaning, and normalization at the initial stage. Next, to apply feature selection, a t-test and binary Non-Dominated Sorting Genetic Algorithm II (NSGAII) were chosen to be employed. Later on, during the analysis stage, the discriminative power of the selected features was evaluated using machine learning and deep learning algorithms. Finally, we considered the selected features and utilized Association Rule Mining algorithm to identify the most important ones for improving the decoding of dominant molecular mechanisms in PTC through its early and late stages. RESULT The SVM classifier was able to distinguish between early and late-stage categories with an accuracy of 83.5% and an AUC of 0.78 based on the identified mRNAs. The most significant genes associated with the early and late stages of PTC were identified as (e.g., ZNF518B, DTD2, CCAR1) and (e.g., lnc-DNAJB6-7:7, RP11-484D2.3, MSL3P1), respectively. CONCLUSION Current study reveals a clear picture of the potential candidate genes that could play a major role not only in the early stage, but also throughout the late one. Hence, the findings could be of help to identify therapeutic targets for more effective PTC drug developments.
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Affiliation(s)
- Seyed Mahdi Hosseiniyan Khatibi
- Clinical Research Development Unit of Tabriz Valiasr Hospital, Tabriz University of Medical Sciences, Tabriz, Iran
- Kidney Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
- Rahat Breath and Sleep Research Center, Tabriz University of Medical Science, Tabriz, Iran
| | | | - Hamed Homaei Rad
- Rahat Breath and Sleep Research Center, Tabriz University of Medical Science, Tabriz, Iran
| | - Manijeh Emdadi
- Department of Computer Engineering, Abadan Branch, Islamic Azad University, Abadan, Iran
| | - Zahra Akbarpour
- Rahat Breath and Sleep Research Center, Tabriz University of Medical Science, Tabriz, Iran
| | - Mohammad Teshnehlab
- Department of Electric and Computer Engineering, K.N. Toosi University of Technology, Tehran, Iran
| | - Saeed Pirmoradi
- Clinical Research Development Unit of Tabriz Valiasr Hospital, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Effat Alizadeh
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
- Faculty of Advanced Medical Sciences, Department of Medical Biotechnology, Tabriz University of Medical Sciences, Tabriz, Iran
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Xie B, Lin J, Chen X, Zhou X, Zhang Y, Fan M, Xiang J, He N, Hu Z, Wang F. CircXRN2 suppresses tumor progression driven by histone lactylation through activating the Hippo pathway in human bladder cancer. Mol Cancer 2023; 22:151. [PMID: 37684641 PMCID: PMC10486081 DOI: 10.1186/s12943-023-01856-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Accepted: 08/31/2023] [Indexed: 09/10/2023] Open
Abstract
BACKGROUND Bladder cancer (BCa) is the fourth most common malignant tumor with a poor prognosis worldwide. Further exploration and research are needed to unmask the underlying roles and molecular mechanisms of circular RNAs. In the current study, our findings showed that circXRN2 suppresses tumor progression driven by histone lactylation by activating the Hippo pathway in human bladder cancer. METHODS RNA immunoprecipitation (RIP) followed by circRNA sequencing confirmed circXRN2 as the research object. Overexpression of circXRN2 and knockdown of TAZ/YAP further verified the biological functions in T24 and TCCSUP cells. RIP, immunoprecipitation and coimmunoprecipitation were used to elucidate the interaction between circXRN2 and LATS1. A Seahorse metabolic analyzer was used to determine the glycolytic rate. Cleavage under targets and Tagmentation (CUT&Tag) and chromatin immunoprecipitation (ChIP) were employed to ensure the regulatory roles of H3K18 lactylation in the transcriptional activity of LCN2. RESULTS CircXRN2 is aberrantly downregulated in bladder cancer tissues and cell lines. CircXRN2 inhibits the proliferation and migration of tumor cells both in vitro and in vivo. In addition, circXRN2 serves as a negative regulator of glycolysis and lactate production. Mechanistically, circXRN2 prevents LATS1 from SPOP-mediated degradation by binding to the SPOP degron and then activates the Hippo signaling pathway to exert various biological functions. The circXRN2-Hippo pathway regulatory axis further modulates tumor progression by inhibiting H3K18 lactylation and LCN2 expression in human bladder cancer. CONCLUSIONS CircXRN2 suppresses tumor progression driven by H3K18 lactylation by activating the Hippo signaling pathway in human bladder cancer. Our results indicated novel therapeutic targets and provided promising strategies for clinical intervention in human bladder cancer.
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Affiliation(s)
- Bo Xie
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310003, R.P. China
| | - Juntao Lin
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310003, R.P. China
| | - Xianwu Chen
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310003, R.P. China
| | - Xuejian Zhou
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310003, R.P. China
| | - Yan Zhang
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310003, R.P. China
| | - Mengjing Fan
- Department of Pathology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310016, R.P. China
| | - Jiayong Xiang
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310003, R.P. China
| | - Ning He
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310003, R.P. China
| | - Zhenghui Hu
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310003, R.P. China
| | - Feifan Wang
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310003, R.P. China.
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Zhang J, Chu G, Zheng L, Liu J, He J. Circular RNA circ_0000119 promotes cervical cancer cell growth and migration via miR-433-3p/PAK2 axis. J Appl Genet 2023; 64:531-543. [PMID: 37540462 DOI: 10.1007/s13353-023-00772-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 07/17/2023] [Accepted: 07/19/2023] [Indexed: 08/05/2023]
Abstract
The purpose of this study was to investigate the role of circ_0000119 on CC progression and its molecular mechanism. The expression levels of circ_0000119, miR-433-3p, and p21-activated kinase 2 (PAK2) in CC tissues and cell lines were measured by quantitative real-time polymerase chain reaction (qRT-PCR). Cell proliferation was assessed using 3-(4,5)-dimethylthiahiazo (-z-y1)-3,5-di-phenytetrazoliumromide (MTT) assay, 5-Ethynyl-2'-deoxyuridine (EdU) assay and colony formation assay. Cell cycle and apoptosis were assessed by flow cytometry. Cell migration and invasive ability were examined by Transwell assays. Downstream binding targets of circ_0000119 were predicted by online bioinformatics tools and confirmed by dual luciferase reporter gene assay, RNA immunoprecipitation (RIP) assay, and RNA pull-down assay. The role of circ_0000119/miR-433-3p/PAK2 axis in regulating the CC process was explored by rescue experiments. A xenograft model was constructed to further determine the effect of circ_0000119 on CC tumor growth in vivo. Immunohistochemistry (IHC) assay was conducted for Ki67 expression. Circ_0000119 was aberrantly upregulated in CC tissues and cell lines. Knockdown of circ_0000119 inhibited CC cell proliferation, cell cycle progress, migration, invasion, and promoted apoptosis of CC cells. MiR-433-3p was a binding target of circ_0000119, and PAK2 was a downstream gene of miR-433-3p. MiR-433-3p inhibition reversed the inhibitory effect of silencing circ_0000119 on CC progression. In addition, PAK2 overexpression reversed the effect of miR-433-3p on CC progression. PAK2 expression was regulated by circ_0000119 and miR-433-3p. Moreover, circ_0000119 knockdown reduced tumor growth of CC in vivo. Circ_0000119 was upregulated in CC, and circ_0000119 knockdown suppressed CC malignant development through the miR-433-3p/PAK2 axis.
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Affiliation(s)
- Junxiao Zhang
- Third Department of Gynecology, Northwest Women's and Children's Hospital, No. 1616, Yanxiang Road, Yanta District, Xi'an, 710061, People's Republic of China.
| | - Guanghua Chu
- Second Department of Gynecology, Northwest Women's and Children's Hospital, Xi'an , 710061, China
| | - Lihua Zheng
- Third Department of Gynecology, Northwest Women's and Children's Hospital, No. 1616, Yanxiang Road, Yanta District, Xi'an, 710061, People's Republic of China
| | - Juandi Liu
- Third Department of Gynecology, Northwest Women's and Children's Hospital, No. 1616, Yanxiang Road, Yanta District, Xi'an, 710061, People's Republic of China
| | - Juxian He
- Third Department of Gynecology, Northwest Women's and Children's Hospital, No. 1616, Yanxiang Road, Yanta District, Xi'an, 710061, People's Republic of China
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Crosstalk of miRNAs with signaling networks in bladder cancer progression: Therapeutic, diagnostic and prognostic functions. Pharmacol Res 2022; 185:106475. [DOI: 10.1016/j.phrs.2022.106475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 09/17/2022] [Accepted: 09/27/2022] [Indexed: 12/24/2022]
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Tang J, Chen J, Wang Y, Zhou S. The role of
MiRNA
‐433 in malignant tumors of digestive tract as tumor suppressor. Cancer Rep (Hoboken) 2022; 5:e1694. [PMID: 35976177 PMCID: PMC9458491 DOI: 10.1002/cnr2.1694] [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: 04/11/2022] [Revised: 07/18/2022] [Accepted: 07/27/2022] [Indexed: 12/24/2022] Open
Abstract
Background MicroRNAs (miRNAs) are a class of short non‐coding RNAs with a length of approximate 22 nuclei acids that can be expressed both as an oncogene and tumor suppressor gene in human cancers. MiRNAs can participate in the post‐ transcriptional regulation of gene expression, and regulate the several cancer‐related processes, including proliferation, apoptosis, metastasis, etc. Recent findings Expression of miRNA‐433 has been reported to vary in different tumors and affected by various factors. We have summarized the different previous studies and found that miRNA‐433 can significantly inhibit the growth of the cancer cells not only in malignant tumors of the digestive tract, but also in lung cancer, breast cancer, cervical cancer, ovarian cancer, bladder cancer, renal carcinoma, glioma, retinoblastoma and osteosarcoma. Conclusion When the expression of miRNA‐433 was up‐regulated, the proliferation, metastasis and invasion abilities of the malignant tumor cells were significantly inhibited. At the same time, the potential mechanisms through which miRNA‐433 can suppress the growth and metastasis of the cancer cells were found to be basically the same, and involved modulation of the specific signaling pathways or target genes in the malignant tumors. Overall, it can be concluded that miRNA‐433 can serve as potential and valuable therapeutic target.
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Affiliation(s)
- Jie Tang
- General Surgery The Second Affiliated Hospital of Bengbu Medical College Bengbu China
| | - Jiawei Chen
- General Surgery The Second Affiliated Hospital of Bengbu Medical College Bengbu China
| | - Yongqiang Wang
- General Surgery The Second Affiliated Hospital of Bengbu Medical College Bengbu China
| | - Shaobo Zhou
- General Surgery The Second Affiliated Hospital of Bengbu Medical College Bengbu China
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Matuszyk J. MALAT1-miRNAs network regulate thymidylate synthase and affect 5FU-based chemotherapy. Mol Med 2022; 28:89. [PMID: 35922756 PMCID: PMC9351108 DOI: 10.1186/s10020-022-00516-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 07/22/2022] [Indexed: 12/12/2022] Open
Abstract
Background The active metabolite of 5-Fluorouracil (5FU), used in the treatment of several types of cancer, acts by inhibiting the thymidylate synthase encoded by the TYMS gene, which catalyzes the rate-limiting step in DNA replication. The major failure of 5FU-based cancer therapy is the development of drug resistance. High levels of TYMS-encoded protein in cancerous tissues are predictive of poor response to 5FU treatment. Expression of TYMS is regulated by various mechanisms, including involving non-coding RNAs, both miRNAs and long non-coding RNAs (lncRNAs). Aim To delineate the miRNAs and lncRNAs network regulating the level of TYMS-encoded protein. Main body Several miRNAs targeting TYMS mRNA have been identified in colon cancers, the levels of which can be regulated to varying degrees by lncRNAs. Due to their regulation by the MALAT1 lncRNA, these miRNAs can be divided into three groups: (1) miR-197-3p, miR-203a-3p, miR-375-3p which are downregulated by MALAT1 as confirmed experimentally and the levels of these miRNAs are actually reduced in colon and gastric cancers; (2) miR-140-3p, miR-330-3p that could potentially interact with MALAT1, but not yet supported by experimental results; (3) miR-192-5p, miR-215-5p whose seed sequences do not recognize complementary response elements within MALAT1. Considering the putative MALAT1-miRNAs interaction network, attention is drawn to the potential positive feedback loop causing increased expression of MALAT1 in colon cancer and hepatocellular carcinoma, where YAP1 acts as a transcriptional co-factor which, by binding to the TCF4 transcription factor/ β-catenin complex, may increase the activation of the MALAT1 gene whereas the MALAT1 lncRNA can inhibit miR-375-3p which in turn targets YAP1 mRNA. Conclusion The network of non-coding RNAs may reduce the sensitivity of cancer cells to 5FU treatment by upregulating the level of thymidylate synthase.
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Affiliation(s)
- Janusz Matuszyk
- Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, 12 R. Weigla Street, 53-114, Wroclaw, Poland.
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Ghafouri-Fard S, Najafi S, Hussen BM, Basiri A, Hidayat HJ, Taheri M, Rashnoo F. The Role of Circular RNAs in the Carcinogenesis of Bladder Cancer. Front Oncol 2022; 12:801842. [PMID: 35296022 PMCID: PMC8918517 DOI: 10.3389/fonc.2022.801842] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 01/28/2022] [Indexed: 12/15/2022] Open
Abstract
Circular RNAs (circRNAs) are a group of transcripts with enclosed configurations which can regulate gene expression. These transcripts have important roles in normal development and in the pathogenesis of disorders. Recent evidence has supported involvement of circRNAs in the development of bladder cancer. Several circRNAs such as circ_0058063, hsa-circRNA-403658, circPDSS1, circCASC15, circRNA-MYLK, and circRNA_103809 have been upregulated in bladder cancer samples. On the other hand, hsa_circ_0137606, BCRC-3, circFUT8, hsa_circ_001598, circSLC8A1, hsa_circ_0077837, hsa_circ_0004826, and circACVR2A are among downregulated circRNAs in bladder cancer. Numerous circRNAs have diagnostic or prognostic value in bladder cancer. In this review, we aim to outline the latest findings about the role of circRNAs in bladder cancer and introduce circRNAs for further investigations as therapeutic targets.
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Affiliation(s)
- Soudeh Ghafouri-Fard
- Department of Medical Genetics, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Sajad Najafi
- Student Research Committee, Department of Medical Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Bashdar Mahmud Hussen
- Department of Pharmacognosy, College of Pharmacy, Hawler Medical University, Erbil, Iraq
| | - Abbas Basiri
- Urology and Nephrology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hazha Jamal Hidayat
- Department of Biology, College of Education, Salahaddin University-Erbil, Erbil, Iraq
| | - Mohammad Taheri
- Institute of Human Genetics, Jena University Hospital, Jena, Germany
- *Correspondence: Mohammad Taheri, ; Fariborz Rashnoo,
| | - Fariborz Rashnoo
- Skull Base Research Center, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- *Correspondence: Mohammad Taheri, ; Fariborz Rashnoo,
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Zhang Z, Zhao H, Zhou G, Han R, Sun Z, Zhong M, Jiang X. Circ_0002623 promotes bladder cancer progression by regulating the miR-1276/SMAD2 axis. Cancer Sci 2022; 113:1250-1263. [PMID: 35048477 PMCID: PMC8990873 DOI: 10.1111/cas.15274] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 12/25/2021] [Accepted: 12/27/2021] [Indexed: 11/29/2022] Open
Abstract
Circular RNAs (circRNAs) are key regulatory factors in the development of multiple cancers. This study is targeted at exploring the effect of circ_0002623 on bladder cancer (BCa) progression and its mechanism. Circ_0002623 was screened out by analyzing the expression profile of circRNAs in BCa tissues. Circ_0002623, miR-1276 and SMAD2 mRNA expression levels in clinical sample tissues and cell lines were detected through quantitative real-time polymerase chain reaction (qRT-PCR). After circ_0002623 was overexpressed or silenced in BCa cells, the cell proliferation, migration and cell cycle were evaluated by CCK-8, BrdU, Transwell assay and flow cytometry. Tumor xenograft model was used to validate the biological function of circ_0002623 in vivo. Bioinformatics analysis and dual-luciferase reporter gene assay were conducted for analyzing and confirming, respectively, the targeted relationship between circ_0002623 and miR-1276, as well as between miR-1276 and SMAD2. The regulatory effects of circ_0002623 and miR-1276 on the expression levels of TGF-β, WNT1 and SMAD2 in BCa cells were detected by Western blot. We reported that, in BCa tissues and cell lines, circ_0002623 was up-regulated, whereas miR-1276 was down-regulated. Circ_0002623 positively regulated BCa cell proliferation, migration and cell cycle progression. Additionally, circ_0002623 could competitively bind with miR-1276 to increase the expression of SMAD2, the target gene of miR-1276. Furthermore, circ_0002623 could regulate the expression of TGF-β and WNT1 via modulating miR-1276 and SMAD2. This study helps to better understand the molecular mechanism underlying BCa progression.
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Affiliation(s)
- Zhaocun Zhang
- Department of Urology, Qilu Hospital, Shandong University, Jinan, 250012, Shandong, China
| | - Haifeng Zhao
- Department of Urology, Qilu Hospital, Shandong University, Jinan, 250012, Shandong, China
| | - Guanwen Zhou
- Department of Urology, Qilu Hospital, Shandong University, Jinan, 250012, Shandong, China
| | - Ruoyan Han
- Department of Urology, Qilu Hospital, Shandong University, Jinan, 250012, Shandong, China
| | - Zhuang Sun
- Department of Urology, Qilu Hospital, Shandong University, Jinan, 250012, Shandong, China
| | - Minglei Zhong
- Department of Urology, Qilu Hospital, Shandong University, Jinan, 250012, Shandong, China
| | - Xianzhou Jiang
- Department of Urology, Qilu Hospital, Shandong University, Jinan, 250012, Shandong, China
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12
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SUN XF, LI L, LIU YB. Curcumin played an anti-cancer role in colorectal cancer via mediating circ_KIAA1199-related regulatory axis. FOOD SCIENCE AND TECHNOLOGY 2022. [DOI: 10.1590/fst.86221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Xue-Feng SUN
- Chongqing University Three Gorges Hospital, China
| | - Liang LI
- Chongqing University Three Gorges Hospital, China
| | - Yan-Bing LIU
- Chongqing University Three Gorges Hospital, China
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13
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Chen W, Chen H, Yang ZT, Mao EQ, Chen Y, Chen EZ. Free fatty acids-induced neutrophil extracellular traps lead to dendritic cells activation and T cell differentiation in acute lung injury. Aging (Albany NY) 2021; 13:26148-26160. [PMID: 34959222 PMCID: PMC8751615 DOI: 10.18632/aging.203802] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Accepted: 11/22/2021] [Indexed: 12/26/2022]
Abstract
This study aimed to investigate whether free fatty acids (FFAs) could induce the release of neutrophil extracellular traps (NETs), as well as the mechanism of FFAs-induced NETs in acute lung injury (ALI). FFAs were used to induce NETs production. The reactive oxygen species (ROS) production was detected after FFA and NADPH oxidase inhibitor treatments. The association between FFAs-induced NETs and the activation of p38, ERK, and JNK pathways was investigated. The effect of FFAs-induced NETs on the dendritic cells (DCs) activation and T cell differentiation was investigated. FFAs could induce neutrophils to produce NETs. FFAs significantly promoted ROS production and increased the expression of ERK, p38 and JNK, and treatment of the inhibitors of NAPDH oxidase (DPI), p38 (SB202190), ERK1/2 (U0126) and JNK (SP600125) inhibited FAAs-induced NETs production. FFAs induced NETs could promote DCs activation and consequently led to the differentiation of primary CD4+ T cells into Th1 and Th17 cells and the release of IL-1β, IL-12 and TNF-α. FFAs are capable of inducing NETs via NOX, ERK, p38 and JNK pathways. FFA-induced NETs further lead to DCs activation and T cell differentiation, which can well explain the mechanism of ALI caused by FFAs.
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Affiliation(s)
- Wei Chen
- Department of Pulmonary and Critical Care Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China.,Institute of Respiratory Diseases, School of Medicine, Shanghai Jiao Tong University, Shanghai 200025, China
| | - Hong Chen
- Department of Pulmonary and Critical Care Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China.,Institute of Respiratory Diseases, School of Medicine, Shanghai Jiao Tong University, Shanghai 200025, China
| | - Zhi-Tao Yang
- Department of Emergency, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - En-Qiang Mao
- Department of Emergency, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Ying Chen
- Department of Emergency, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Er-Zhen Chen
- Department of Emergency, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
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14
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Chen X, Zhang Y, Wang F, Zhou X, Fu Q, Yang X, Lin J, Jin X. A Novel Assessment Model Based on Molecular Subtypes of Hypoxia-Related LncRNAs for Prognosis of Bladder Cancer. Front Cell Dev Biol 2021; 9:718991. [PMID: 34869309 PMCID: PMC8634255 DOI: 10.3389/fcell.2021.718991] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 10/11/2021] [Indexed: 12/19/2022] Open
Abstract
Hypoxia is a common feature in various tumors that regulates aggressiveness. Previous studies have demonstrated that some dysregulated long non-coding RNAs (lncRNAs) are correlated with tumor progression, including bladder cancer (BCa). However, the prognostic effect of hypoxia-related lncRNAs (HRLs) and their clinical relevance, as well as their regulatory effect on the tumor immune microenvironment, are largely unknown in BCa. A co-expression analysis between hypoxia genes and lncRNA expression, which was downloaded from the TCGA database, was performed to identify HRLs. Univariate Cox regression analysis was performed to select the most desirable lncRNAs for molecular subtype, and further LASSO analysis was performed to develop a prognostic model. This molecular subtype based on four HRLs (AC104653, AL136084, AL139393, and LINC00892) showed good performance in the tumor microenvironment and tumor mutation burden. The prognostic risk model suggested better performance in predicting BCa patients' prognosis and obtained a close correlation with clinicopathologic features. Furthermore, four of five first-line clinical chemotherapies showed different sensitivities to this model, and nine immune checkpoints showed different expression in the molecular subtypes or the risk model. In conclusion, this study indicates that this molecular subtype and risk model based on HRLs may be useful in improving the prognostic prediction of BCa patients with different clinical situations and may help to find a useful target for tumor therapy.
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Affiliation(s)
- Xianwu Chen
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Yan Zhang
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Feifan Wang
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Xuejian Zhou
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Qinghe Fu
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Xintao Yang
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Juntao Lin
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Xiaodong Jin
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
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15
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Wang F, Zhang Y, Zhou X, Chen X, Xiang J, Fan M, Yu Y, Cai Y, Wu H, Huang S, He N, Hu Z, Ding G, Jin X. Circular RNA CircPPP1CB Suppresses Tumorigenesis by Interacting With the MiR-1307-3p/SMG1 Axis in Human Bladder Cancer. Front Cell Dev Biol 2021; 9:704683. [PMID: 34595165 PMCID: PMC8476764 DOI: 10.3389/fcell.2021.704683] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Accepted: 08/16/2021] [Indexed: 12/23/2022] Open
Abstract
Circular RNA (circRNA) is a newly discovered endogenous non-coding RNA (ncRNA), which is characterized with a closed circular structure. A growing body of evidence has verified the vital roles of circRNAs in human cancer. In this research, we selected circPPP1CB as a study object by circRNA sequencing and quantitative real-time PCR (qRT-PCR) validation in human bladder cancer (BC). CircPPP1CB is downregulated in BC and is negatively correlated with clinical stages and histological grades. Functionally, circPPP1CB modulated cell growth, metastasis, and epithelial-to-mesenchymal transition (EMT) process in vitro and in vivo. Mechanically, we performed various experiments to verify the circPPP1CB/miR-1307-3p/SMG1 regulatory axis. Taken together, our results demonstrated that circPPP1CB participates in tumor growth, metastasis, and EMT process by interacting with the miR-1307-3p/SMG1 axis, and that circPPP1CB might be a novel therapeutic target and diagnostic biomarker in human BC.
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Affiliation(s)
- Feifan Wang
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Yan Zhang
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Xuejian Zhou
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Xianwu Chen
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Jiayong Xiang
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Mengjing Fan
- Department of Pathology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Yanlan Yu
- Department of Urology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Yueshu Cai
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Hongshen Wu
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Shihan Huang
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Ning He
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Zhenghui Hu
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Guoqing Ding
- Department of Urology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Xiaodong Jin
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
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16
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Yu K, Liu M, Huang Y, Yu Q, Ma D, Dai G, Chen Y. circMBOAT2 serves as the sponge of miR-433-3p to promote the progression of bladder cancer. Pathol Res Pract 2021; 227:153613. [PMID: 34563754 DOI: 10.1016/j.prp.2021.153613] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 09/06/2021] [Accepted: 09/08/2021] [Indexed: 11/28/2022]
Abstract
BACKGROUND Bladder cancer (Bca) is the most common cancer in urinary system. Recent studies revealed that circular RNAs (circRNAs) play vital roles in the development and progression of cancers. circMBOAT2 serves as an oncogenic gene in various kinds of cancer, promoting cell growth and metastasis. Nevertheless, the biological function of circMBOAT2 in Bca has not been reported. METHODS qRT-PCR was used to measure the mRNA, circRNA and miRNA expression levels in Bca tissues and cells. Loss-of function experiments were carried to investigate the effect of circMBOAT2 on cell proliferation and migration. Nuclear mass separation, RNA pull-down and dual-luciferase reporter were performed to the molecular mechanisms underlying the functions of circMBOAT2. RESULTS In this research, we identified that circMBOAT2 expression was increased in Bca tissues and positively corelated with unfavorable prognosis. In vitro assay demonstrated that suppression of circMBOAT2 impaired the proliferation and migration of Bca cells. Mechanically, circMBOAT2 was predominantly spread in cytoplasm and it sponged miR-433-3p to strengthen CREB1 expression. CONCLUSION Hence, our study suggested that circMBOAT2 may serve as an oncogene in the development and progression of Bca and it will be the novel tumor biomarker and therapeutic target for Bca.
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Affiliation(s)
- Keqin Yu
- Hangzhou TCM Hospital Affiliated to Zhejiang Chinese Medical University, 310007 Hangzhou, China
| | - Maomao Liu
- Hangzhou TCM Hospital Affiliated to Zhejiang Chinese Medical University, 310007 Hangzhou, China
| | - Yasheng Huang
- Hangzhou TCM Hospital Affiliated to Zhejiang Chinese Medical University, 310007 Hangzhou, China
| | - Qiqi Yu
- Hangzhou TCM Hospital Affiliated to Zhejiang Chinese Medical University, 310007 Hangzhou, China
| | - Dechen Ma
- Hangzhou TCM Hospital Affiliated to Zhejiang Chinese Medical University, 310007 Hangzhou, China
| | - Guangcheng Dai
- Department of Urology, The Second Affiliated Hospital of Soochow University, 215004 Suzhou, China.
| | - Yin Chen
- Hangzhou TCM Hospital Affiliated to Zhejiang Chinese Medical University, 310007 Hangzhou, China.
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17
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The Emerging Functions of Circular RNAs in Bladder Cancer. Cancers (Basel) 2021; 13:cancers13184618. [PMID: 34572845 PMCID: PMC8464819 DOI: 10.3390/cancers13184618] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 09/10/2021] [Accepted: 09/10/2021] [Indexed: 12/17/2022] Open
Abstract
Simple Summary The role of circular RNAs has made breakthroughs in understanding the mechanisms of tumor development. Bladder cancer has an increasing incidence, high recurrence rate, high metastatic potential, poor prognosis, and susceptibility to chemotherapy resistance. Thus, it is essential to identify molecules related to the tumorigenesis of bladder cancer. In this review, we summarize current knowledge about the expression of circular RNAs in bladder cancer and their implications in vesical carcinogenesis. We further discuss the limitations of existing studies and provide an outlook for future studies in the hopes of better revealing the association between circular RNAs and bladder cancer. Abstract Bladder cancer (BC) is among the top ten most common cancer types worldwide and is a serious threat to human health. Circular RNAs (circRNAs) are a new class of non-coding RNAs generated by covalently closed loops through back-splicing. As an emerging research hotspot, circRNAs have attracted considerable attention due to their high conservation, stability, abundance, and specificity of tissue development. Accumulating evidence has revealed different form of circRNAs are closely related to the malignant phenotype, prognosis and chemotherapy resistance of BC, suggesting that different circRNAs may be promising biomarkers and have therapeutic significance in BC. The intention of this review is to summarize the mechanisms of circRNA-mediated BC progression and their diagnostic and prognostic value as biomarkers, as well as to further explore their roles in chemotherapy resistance.
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18
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Ma YS, Cao YF, Liu JB, Li W, Deng J, Yang XL, Xin R, Shi Y, Zhang DD, Lv ZW, Fu D. The power and the promise of circRNAs for cancer precision medicine with functional diagnostics and prognostic prediction. Carcinogenesis 2021; 42:1305-1313. [PMID: 34313732 DOI: 10.1093/carcin/bgab071] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 07/17/2021] [Accepted: 07/26/2021] [Indexed: 12/14/2022] Open
Abstract
Circular RNA (circRNA) is a large class of covalently closed circular RNA. As a member of competitive endogenous RNA (ceRNA), it participates in the regulation of circRNA-miRNA-mRNA network and plays an important role in the regulation of physiology and pathology. CircRNA is produced by the reverse splicing of exon, intron or both, forming exon or intron circRNA. Studies have shown that circRNA is a ubiquitous molecule, which exceeds the linear mRNA distributed in human cells. Because of its covalent closed-loop structure, circRNA is resistant to RNase R, which is more stable than linear mRNA; circRNA is highly conserved in different species. It was found that circRNA competitively adsorbs miRNA, as a miRNA sponge, to involve in the expression regulation of a variety of genes and plays an important role in tumor development, invasion, metastasis and other processes. These molecules offer new potential opportunities for therapeutic intervention and serve as biomarkers for diagnosis. In this paper, the origin, characteristics and functions of circRNA and its role in tumor development, invasion and metastasis, diagnosis and prognosis are reviewed.
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Affiliation(s)
- Yu-Shui Ma
- National Engineering Laboratory for Deep Process of Rice and Byproducts, College of Food Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, Hunan, China.,Department of Tumor, Affiliated Tumor Hospital of Nantong University, Nantong 226300, China.,International Cooperation Laboratory on Signal Transduction, Eastern Hepatobiliary Surgery Hospital/Institute, National Center for Liver Cancer, the Second Military Medical University, Shanghai 200433, China.,Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Yong-Feng Cao
- Department of Tumor, Affiliated Tumor Hospital of Nantong University, Nantong 226300, China
| | - Ji-Bin Liu
- Department of Tumor, Affiliated Tumor Hospital of Nantong University, Nantong 226300, China
| | - Wen Li
- National Engineering Laboratory for Deep Process of Rice and Byproducts, College of Food Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, Hunan, China
| | - Jing Deng
- National Engineering Laboratory for Deep Process of Rice and Byproducts, College of Food Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, Hunan, China
| | - Xiao-Li Yang
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Rui Xin
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Yi Shi
- National Engineering Laboratory for Deep Process of Rice and Byproducts, College of Food Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, Hunan, China.,Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Dan-Dan Zhang
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Zhong-Wei Lv
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Da Fu
- National Engineering Laboratory for Deep Process of Rice and Byproducts, College of Food Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, Hunan, China.,Institute of Pancreatic Diseases, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200025, China
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19
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Ding Z, Sun D, Han J, Shen L, Yang F, Sah S, Sui X, Wu G. Novel noncoding RNA CircPTK2 regulates lipolysis and adipogenesis in cachexia. Mol Metab 2021; 53:101310. [PMID: 34311131 PMCID: PMC8365522 DOI: 10.1016/j.molmet.2021.101310] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Revised: 07/08/2021] [Accepted: 07/20/2021] [Indexed: 01/08/2023] Open
Abstract
Objective Cancer-associated cachexia is a devastating pathological disorder characterized by skeletal muscle wasting and fat storage depletion. Circular RNA, a newly discovered class of noncoding RNAs with important roles in regulating lipid metabolism, has not been fully understood in the pathology of cachexia. We aimed to identify circular RNAs that are upregulated in adipose tissues from cachectic patients and explore their function and mechanism in lipid metabolism. Methods Whole transcriptome RNA sequencing was used to screen for differentially expressed circRNAs. Quantitative reverse transcription PCR was applied to detect the expression level of circPTK2 in adipose tissues. The diagnostic value of circPTK2 was evaluated in adipose tissues from patients with and without cachexia. Then, function experiments in vitro and in vivo were performed to evaluate the effects of circPTK2 on lipolysis and adipogenesis. Mechanistically, luciferase reporter assay, RNA immunoprecipitation, and fluorescent in situ hybridization were performed to confirm the interaction between circPTK2 and miR-182-5p in adipocytes. Results We detected 66 differentially expressed circular RNA candidates and proved that circPTK2 was upregulated in adipose tissues from cachectic patients. Then we identified that circPTK2 was closely related to the pathological process of cachexia and could be used as a diagnostic marker. Mechanistically, circPTK2 bound competitively to miR-182-5p and abrogated the suppression on its target gene JAZF1, which finally led to promotion of lipolysis and inhibition of adipogenesis. In vivo experiments demonstrated that overexpression of circPTK2 inhibited adipogenesis and enhanced lipolysis. Conclusions Our findings reveal the novel role of circPTK2 in promoting lipolysis and reducing adipogenesis via a ceRNA mechanism and provide a potential diagnostic biomarker and therapeutic target for cancer-associated cachexia. A novel noncoding RNA termed circPTK2 was highly expressed in adipose tissues of patients with cancer-associated cachexia. CircPTK2 was proven to be a potential diagnostic biomarker for cancer-associated cachexia. CircPTK2 induced lipolysis and suppressed adipogenesis by sponging miR-182-5p to regulate JAZF1 expression. A recombinant adeno-associated virus containing tissue-specific promoter was constructed and utilized in the animal experiment.
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Affiliation(s)
- Zuoyou Ding
- Department of General Surgery, Zhongshan Hospital of Fudan University, 180 Fenglin Road, Shanghai, People's Republic of China
| | - Diya Sun
- Department of General Surgery, Zhongshan Hospital of Fudan University, 180 Fenglin Road, Shanghai, People's Republic of China
| | - Jun Han
- Department of General Surgery, Zhongshan Hospital of Fudan University, 180 Fenglin Road, Shanghai, People's Republic of China.
| | - Lei Shen
- Department of General Surgery, Zhongshan Hospital of Fudan University, 180 Fenglin Road, Shanghai, People's Republic of China
| | - Fan Yang
- Department of General Surgery, Zhongshan Hospital of Fudan University, 180 Fenglin Road, Shanghai, People's Republic of China
| | - Szechun Sah
- Department of General Surgery, Zhongshan Hospital of Fudan University, 180 Fenglin Road, Shanghai, People's Republic of China
| | - Xiangyu Sui
- Department of General Surgery, Zhongshan Hospital of Fudan University, 180 Fenglin Road, Shanghai, People's Republic of China
| | - Guohao Wu
- Department of General Surgery, Zhongshan Hospital of Fudan University, 180 Fenglin Road, Shanghai, People's Republic of China.
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20
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Cheng F, Zheng B, Si S, Wang J, Zhao G, Yao Z, Niu Z, He W. The Roles of CircRNAs in Bladder Cancer: Biomarkers, Tumorigenesis Drivers, and Therapeutic Targets. Front Cell Dev Biol 2021; 9:666863. [PMID: 34350174 PMCID: PMC8326561 DOI: 10.3389/fcell.2021.666863] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Accepted: 06/14/2021] [Indexed: 11/30/2022] Open
Abstract
Bladder cancer (BCa) is the most prevalent malignancy of the urinary system. Circular RNAs (circRNAs), a novel subtype of non-coding RNAs, play a crucial role in physiological and developmental processes. CircRNAs mainly function as regulators of splicing process and transcription, microRNA sponges, and protein brackets. Recent advances in understanding the pathogenesis of BCa have led to the identification of an abundance of dysregulated circRNAs associated with BCa. These aberrantly expressed circRNAs eventually lead to abnormalities in biological, genetic, and epigenetic information. In this review, we introduce the potential of circRNAs as biomarkers for BCa diagnosis and prognosis. Notably, diverse mechanisms have been proposed for circRNAs driving carcinogenesis, including increasing cell proliferation, promoting invasive and migratory capacity, enhancing endothelial–mesenchymal transition, sustaining stemness, and enabling resistance to chemotherapy. Importantly, a full understanding of circRNA mechanisms is needed to mine promising therapeutic approaches for targeting BCa. In this paper, we present the latest advances in circRNAs and systemically summarize the characteristics and mechanisms of circRNAs in BCa, providing potential perspectives for BCa treatment.
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Affiliation(s)
- Fajuan Cheng
- Department of Nephrology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China.,Department of Nephrology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Bin Zheng
- Department of Urology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China.,Department of Urology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Shubin Si
- Department of Urology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China.,Department of Urology, People's Hospital of Yiyuan County, Zibo, China
| | - Jianwei Wang
- Department of Urology, Shandong Provincial ENT Hospital Affiliated to Shandong University, Jinan, China
| | - Guiting Zhao
- Department of Urology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Zhongshun Yao
- Department of Urology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Zhihong Niu
- Department of Urology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China.,Department of Urology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Wei He
- Department of Urology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China.,Department of Urology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
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21
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Meng L, Zheng Y, Liu S, Ju Y, Ren S, Sang Y, Zhu Y, Gu L, Liu F, Zhao Y, Zhang X, Sang M. ZEB1 represses biogenesis of circ-DOCK5 to facilitate metastasis in esophageal squamous cell carcinoma via a positive feedback loop with TGF-β. Cancer Lett 2021; 519:117-129. [PMID: 34216686 DOI: 10.1016/j.canlet.2021.06.026] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Revised: 06/15/2021] [Accepted: 06/27/2021] [Indexed: 12/24/2022]
Abstract
ZEB1 is an important transcription factor that plays a critical role in TGF-β-induced epithelial-mesenchymal transition (EMT) and tumor metastasis. However, the mechanisms by which ZEB1 regulates metastasis in esophageal squamous cell carcinoma (ESCC) remain largely unknown. Here, we identified a novel circular RNA, circ-DOCK5, the biogenesis of which is directly regulated by ZEB1 and ZEB1-repressed RNA-binding protein eIF4A3. Tissue microarray analysis identified circ-DOCK5 to be downregulated in ESCC tissues, and its downregulation correlated with poor prognosis. Moreover, circ-DOCK5 increased the stability of miR-627-3p by functioning as a "reservoir" for miR-627-3p to partially reverse the ZEB1-enhanced migration and invasion in ESCC. MiR-627-3p inhibited the expression of TGFB2 and the secretion of TGF-β, which further resulted in downregulation of ZEB1 and suppression of TGF-β-induced EMT. In vivo experiments showed that ZEB1 promoted metastasis in ESCC by regulating expression of circ-DOCK5. Therefore, the present study revealed that ZEB1-mediated downregulation of circ-DOCK5 facilitates metastasis in ESCC by forming a positive feedback loop with TGF-β by altering the miR-627-3p/TGFB2 signaling. Targeting this signaling pathway may help suppress progression in ESCC.
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Affiliation(s)
- Lingjiao Meng
- Tumor Research Institute, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050017, People's Republic of China; Research Center, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050017, People's Republic of China
| | - Yang Zheng
- Tumor Research Institute, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050017, People's Republic of China; Research Center, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050017, People's Republic of China
| | - Sihua Liu
- Research Center, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050017, People's Republic of China
| | - Yingchao Ju
- Animal Center, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050017, People's Republic of China
| | - Shuguang Ren
- Animal Center, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050017, People's Republic of China
| | - Yang Sang
- Animal Center, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050017, People's Republic of China
| | - Yonggang Zhu
- Thoracic Surgery, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050017, People's Republic of China
| | - Lina Gu
- Research Center, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050017, People's Republic of China
| | - Fei Liu
- Research Center, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050017, People's Republic of China
| | - Yang Zhao
- Research Management Office, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050017, People's Republic of China
| | - Xiaochong Zhang
- Research Center, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050017, People's Republic of China
| | - Meixiang Sang
- Tumor Research Institute, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050017, People's Republic of China; Research Center, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050017, People's Republic of China.
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22
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Cai L, Wang Y, Wu J, Wu G. Hsa_circ_0008234 facilitates proliferation of cutaneous squamous cell carcinoma through targeting miR-127-5p to regulate ADCY7. Arch Dermatol Res 2021; 314:541-551. [PMID: 34143288 DOI: 10.1007/s00403-021-02261-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 04/28/2021] [Accepted: 06/11/2021] [Indexed: 12/11/2022]
Abstract
Cutaneous squamous cell carcinoma (cSCC) is the second most common skin malignant tumor with 25-50% of 5-year survival. There exist urgent needs for the identification of novel biomarkers for the diagnostic and therapeutic strategies of cSCC. The differentially expressed circRNAs in cSCC tissues and non-lesional skin tissues were obtained through analyzing the circular RNAs (circRNAs) microarray dataset GSE74758. The expression pattern of the indicated circRNAs in cSCC tissues was confirmed by qRT-PCR. FISH analysis was used to detect the location of hsa_circ_0008234 in cells. RIP experiment was used to detect the interaction between hsa_circ_0008234 and miR-127-5p. CCK-8 analysis and colony formation assay were used to detect the proliferation of cSCC cells. qRT-PCR and western blot were adopted to detect the expression of ACDY7. Three differential expressed circRNAs were obtained from the microarray data (GSE74758), and hsa_circ_0008234 was confirmed to be highly expressed in cSCC tissues by qRT-PCR. Hsa_circ_0008234 was mainly located in cytoplasm and stable in cSCC cells. RIP experiment revealed that hsa_circ_0008234 directly interacts with miR-127-5p in cSCC cells. Hsa_circ_0008234 increased the cell viability and colony formation of cSCC cells through acting as the sponge of miR-127-5p. MiR-127-5p inhibited the expression of ADCY7 in cSCC cells through binding the 3'UTR of ADCY7. Hsa_circ_0008234 was positively associated with ADCY7 expression in cSCC tissues. Hsa_circ_0008234 facilitates the proliferation of cSCC through targeting miR-127-5p to regulate ADCY7 expression and has the potential to be a novel therapeutic target for cSCC.
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Affiliation(s)
- Li Cai
- Department of Dermatology and Venereology, Hebei Provincial People' Hospital, Shijiazhuang, Hebei, 050011, P. R. China
| | - Yongqiang Wang
- Department of Dermatology and Venereology, Hebei Provincial People' Hospital, Shijiazhuang, Hebei, 050011, P. R. China
| | - Jian Wu
- Department of Dermatology and Venereology, Hebei Provincial People' Hospital, Shijiazhuang, Hebei, 050011, P. R. China
| | - Ganxun Wu
- Department of Otorhinolaryngology Head and Neck Surgery, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050017, P. R. China.
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23
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Du W, Hu J, Hu R, Yang M, Peng Y, Zhang Z, Li Y, He X. circ0101675 promotes malignant process via sponging miR-1278 and upregulating WNT3A/5A in non-small cell lung cancer. J Cancer 2021; 12:4209-4217. [PMID: 34093821 PMCID: PMC8176403 DOI: 10.7150/jca.57255] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Accepted: 04/24/2021] [Indexed: 12/11/2022] Open
Abstract
Circular RNAs (circRNAs) is one type of non-coding RNAs (ncRNAs) which have many roles in biological processes, as well as modulation intracellular gene expression modulation. Nonethless, the roles along with expression status of the most circRNAs in NSCLC (non-small cell lung cancer) remain unknown. Herein, we conducted a high-throughput microarray sequencing to identify abnormal expressed circRNAs. Circ0101675 was found upregulated in NSCLC cell lines and tissues. We carried out colony formation, transwell, CCK-8, and animal assays to investigate the functions of circ0101675. Silence of circ0101675 inhibited the migration and proliferation of NSCLC. To elucidate the mechanism, RNA immunoprecipitation assays along with luciferase enzyme reporter assays were further employed to explore the cross-talk between circ0101675 and other molecules. We discovered that circ0101675 facilitates the malignant process of growth and migration via sponging miR-1278 and upregulating WNT3A/5A expression. In conclusion, we revelaed the vital role of circ0101675-miR-1278-WNT3A/5A signaling in NSCLC progression via the competing endogenous RNAs mechanism. Therefore, circ0101675 can be used as a new and useful biomarker for monitoring and treating NSCLC.
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Affiliation(s)
- Wei Du
- Key Laboratory of Cancer Cellular and Molecular Pathology in Hunan Province, Cancer Research Institute, University of South China, Hengyang 421001, Hunan Province, China.,Department of pathology, The First People's Hospital of Changde City, Hunan Province
| | - Jianpeng Hu
- Department of pathology, The First People's Hospital of Changde City, Hunan Province
| | - Rong Hu
- Department of pathology, The First People's Hospital of Changde City, Hunan Province
| | - Min Yang
- Department of pathology, The First People's Hospital of Changde City, Hunan Province
| | - Yun Peng
- Department of pathology, The First People's Hospital of Changde City, Hunan Province
| | - Zhiwei Zhang
- Key Laboratory of Cancer Cellular and Molecular Pathology in Hunan Province, Cancer Research Institute, University of South China, Hengyang 421001, Hunan Province, China
| | - Yuehua Li
- Key Laboratory of Cancer Cellular and Molecular Pathology in Hunan Province, Cancer Research Institute, University of South China, Hengyang 421001, Hunan Province, China.,Department of Medical Oncology, the First Affiliated Hospital, University of South China, Hengyang 421001, Hunan Province, China
| | - Xiusheng He
- Key Laboratory of Cancer Cellular and Molecular Pathology in Hunan Province, Cancer Research Institute, University of South China, Hengyang 421001, Hunan Province, China
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24
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Mao X, Cao Y, Guo Z, Wang L, Xiang C. Biological roles and therapeutic potential of circular RNAs in osteoarthritis. MOLECULAR THERAPY-NUCLEIC ACIDS 2021; 24:856-867. [PMID: 34026329 PMCID: PMC8131397 DOI: 10.1016/j.omtn.2021.04.006] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Osteoarthritis (OA) is a common and disabling joint disorder that is mainly characterized by cartilage degeneration and narrow joint spaces. The regulatory functions of non-coding RNAs (long non-coding RNAs, microRNAs [miRNAs], and circular RNAs [circRNAs]) in OA progression have attracted considerable attention, and the function of circular RNAs in the context of OA has been an increasingly popular research topic in the last 6 years. Recent studies have reported that various circRNAs can delay or aggravate diverse aspects of the OA process, including extracellular matrix formation, apoptosis, proliferation, inflammation, and autophagy, via circRNA/miRNA/mRNA pathways. Thus, circRNAs and related pathways are potential therapeutic targets for OA. Our review provides comprehensive information about circRNAs, including their biogenesis, functions, and characteristics, and it reveals their critical roles in the pathogenesis of OA via a large regulatory network of sponges. Considering their regulatory functions and characteristics, we hypothesize that circRNAs not only can be transferred through bodily fluids to serve as diagnostic biomarkers, but they can also be released from mesenchymal stem cell-derived exosomes and delivered to OA chondrocytes acting as therapeutic circRNAs. Further investigations of the in-depth molecular mechanisms of action of circRNAs in OA are expected to provide effective and safe OA treatment strategies.
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Affiliation(s)
- Xingjia Mao
- Department of Orthopedics, The Second Hospital of Shanxi Medical University, Taiyuan 030000, China
| | - Yanyan Cao
- MicroNano System Research Center, Taiyuan University of Technology, Taiyuan, China.,College of Information Science and Engineering, Hebei North University, Zhangjiakou 075000, China
| | - Zijian Guo
- Department of Orthopedics, The Second Hospital of Shanxi Medical University, Taiyuan 030000, China
| | - Linlin Wang
- Department of Basic Medicine Sciences, Zhejiang University School of Medicine, Hangzhou 310000, China
| | - Chuan Xiang
- Department of Orthopedics, The Second Hospital of Shanxi Medical University, Taiyuan 030000, China
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25
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Chen W, Zheng G, Huang J, Zhu L, Li W, Guo T, Huang Y, Pan X. CircMED13L_012 promotes lung adenocarcinoma progression by upregulation of MAPK8 mediated by miR-433-3p. Cancer Cell Int 2021; 21:111. [PMID: 33593390 PMCID: PMC7885357 DOI: 10.1186/s12935-021-01811-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Accepted: 02/03/2021] [Indexed: 02/07/2023] Open
Abstract
Background Metastasis and disease refractoriness remain as major challenges for non-small cell lung cancer (NSCLC) treatment and understanding the underlying molecular mechanisms is of scientific and clinical value. Therefore, in this study, we aimed to explore the effects of circMED13L_012 on the proliferation, migration, invasion and drug-resistance of NSCLC tumor cells. Methods In this study, we utilized clinical samples and NSCLC cell lines to explore the association between circMED13L_012 expressions and tumor cell metastasis and chemo resistance. CCK8 and transwell assay were conducted to explore the impact of circMED13_012 on NSCLC tumor proliferation and migrative capabilities. Dual-luciferase reporter gene assay was conducted to validate the circMED13L_012 interaction network. Results Our results demonstrated that circMED13L_012 exhibited significantly elevated average level in our clinical samples of NSCLC, compared with normal tissues. circMED13L_012 level was positively correlated with disease stage and metastatic status. Increased circMED13L_012 expression was associated with the enhanced migration, proliferation and chemo resistance of NSCLC cell lines. Further experiments indicated that circMED13L_012 promoted malignant behavior of NSCLC tumor cells by targeting MAPK8 through modulation miR-433-3p expression. Conclusions Our study for the first time demonstrated that circMED13L_012–miR-433-3p–MAPK8 axis played important role for NSCLC pathogenesis, which could be potential therapeutic target for the development of future NSCLC treatment.
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Affiliation(s)
- Wenshu Chen
- Department of Thoracic Surgery, Shengli Clinical Medical College of Fujian Medical University, Fujian Provincial Hospital, No. 134 East Street, 350001, Fuzhou, China
| | - Guanying Zheng
- Department of Pulmonary and Critical Care Medicine, Shengli Clinical Medical College of Fujian Medical University, Fujian Provincial Hospital, 350001, Fuzhou, China
| | - Jianyuan Huang
- Department of Thoracic Surgery, Shengli Clinical Medical College of Fujian Medical University, Fujian Provincial Hospital, No. 134 East Street, 350001, Fuzhou, China
| | - Lihuan Zhu
- Department of Thoracic Surgery, Shengli Clinical Medical College of Fujian Medical University, Fujian Provincial Hospital, No. 134 East Street, 350001, Fuzhou, China
| | - Wujin Li
- Department of Thoracic Surgery, Shengli Clinical Medical College of Fujian Medical University, Fujian Provincial Hospital, No. 134 East Street, 350001, Fuzhou, China
| | - Tianxing Guo
- Department of Thoracic Surgery, Shengli Clinical Medical College of Fujian Medical University, Fujian Provincial Hospital, No. 134 East Street, 350001, Fuzhou, China
| | - Yangyun Huang
- Department of Thoracic Surgery, Shengli Clinical Medical College of Fujian Medical University, Fujian Provincial Hospital, No. 134 East Street, 350001, Fuzhou, China
| | - Xiaojie Pan
- Department of Thoracic Surgery, Shengli Clinical Medical College of Fujian Medical University, Fujian Provincial Hospital, No. 134 East Street, 350001, Fuzhou, China.
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