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Zhang L, Li X, Gao H, Li P. The Role of Circular RNA Variants Generated from the NFIX Gene in Different Diseases. Mol Pharm 2024; 21:1027-1037. [PMID: 38315004 DOI: 10.1021/acs.molpharmaceut.3c00933] [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] [Indexed: 02/07/2024]
Abstract
Circular RNAs (circRNAs) have been identified as important regulators in different developmental processes and disease pathogenesis. The loop structure of circRNAs makes them very stable in different conditions and microenvironments. circRNAs can affect microRNA (miRNA) and RNA binding protein (RBP) activity, encode functional proteins and regulate gene transcription. Recently, two circNFIX variants derived from the same gene, the Nuclear Factor I X (NFIX) gene, were determined as participants in the pathological processes of various diseases such as heart diseases and cancers. Both circNFIX variants are exonic circular RNAs and mainly function by sponging miRNAs. In this review, we summarize the current knowledge on circRNAs, elucidate the origins and properties of two circNFIX variants, explore the roles of two circNFIX variants in different diseases, and present clinical perspectives.
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Affiliation(s)
- Lei Zhang
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, Qingdao University, No. 38 DengZhou Road, Qingdao 266021, China
| | - Xin Li
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, Qingdao University, No. 38 DengZhou Road, Qingdao 266021, China
| | - Huijuan Gao
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, Qingdao University, No. 38 DengZhou Road, Qingdao 266021, China
| | - Peifeng Li
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, Qingdao University, No. 38 DengZhou Road, Qingdao 266021, China
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2
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Kadian LK, Verma D, Lohani N, Yadav R, Ranga S, Gulshan G, Pal S, Kumari K, Chauhan SS. Long non-coding RNAs in cancer: multifaceted roles and potential targets for immunotherapy. Mol Cell Biochem 2024:10.1007/s11010-024-04933-1. [PMID: 38413478 DOI: 10.1007/s11010-024-04933-1] [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: 06/06/2023] [Accepted: 01/05/2024] [Indexed: 02/29/2024]
Abstract
Cancer remains a major global health concern with high mortality rates mainly due to late diagnosis and poor prognosis. Long non-coding RNAs (lncRNAs) are emerging as key regulators of gene expression in human cancer, functioning through various mechanisms including as competing endogenous RNAs (ceRNAs) and indirectly regulating miRNA expression. LncRNAs have been found to have both oncogenic and tumor-suppressive roles in cancer, with the former promoting cancer cell proliferation, migration, invasion, and poor prognosis. Recent research has shown that lncRNAs are expressed in various immune cells and are involved in cancer cell immune escape and the modulation of the tumor microenvironment, thus highlighting their potential as targets for cancer immunotherapy. Targeting lncRNAs in cancer or immune cells could enhance the anti-tumor immune response and improve cancer immunotherapy outcomes. However, further research is required to fully understand the functional roles of lncRNAs in cancer and the immune system and their potential as targets for cancer immunotherapy. This review offers a comprehensive examination of the multifaceted roles of lncRNAs in human cancers, with a focus on their potential as targets for cancer immunotherapy. By exploring the intricate mechanisms underlying lncRNA-mediated regulation of cancer cell proliferation, invasion, and immune evasion, we provide insights into the diverse therapeutic applications of these molecules.
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Affiliation(s)
- Lokesh K Kadian
- Dept of Biochemistry, All India Institute of Medical Sciences, New Delhi, 110029, India
- Dept of Dermatology, Indiana University School of Medicine, Indianapolis, 46202, USA
| | - Deepika Verma
- Dept of Biochemistry, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Neelam Lohani
- Dept of Biochemistry, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Ritu Yadav
- Dept of Genetics, MD University, Rohtak, 124001, India
| | - Shalu Ranga
- Dept of Genetics, MD University, Rohtak, 124001, India
| | - Gulshan Gulshan
- Department of Biosciences and Bioengineering, IIT Bombay, Mumbai, Maharashtra, India
| | - Sanghapriya Pal
- Dept of Biochemistry, Maulana Azad Medical College and Associated Hospital, New Delhi, 110002, India
| | - Kiran Kumari
- Dept of Forensic Science, Lovely Professional University, Jalandhar, Punjab, 144411, India
| | - Shyam S Chauhan
- Dept of Biochemistry, All India Institute of Medical Sciences, New Delhi, 110029, India.
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3
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Wang R, Ye H, Yang B, Ao M, Yu X, Wu Y, Xi M, Hou M. m6A-modified circNFIX promotes ovarian cancer progression and immune escape via activating IL-6R/JAK1/STAT3 signaling by sponging miR-647. Int Immunopharmacol 2023; 124:110879. [PMID: 37713785 DOI: 10.1016/j.intimp.2023.110879] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 08/21/2023] [Accepted: 08/28/2023] [Indexed: 09/17/2023]
Abstract
BACKGROUND Ovarian cancer (OC) is one of the most common gynecological malignant cancers. Our previous work confirmed that circNFIX acted as an oncogene in OC, which could promote malignant proliferation, metastasis and angiogenesis. However, the role and mechanism of circNFIX in OC immune escape remain unclear. METHODS The RNA and protein levels were determined by qRT-PCR and western blot assays. The malignant phenotypes were tested by cell count kit-8, EdU staining, flow cytometry and transwell assays. The immune cytokines levels were measured by ELISA analysis. Molecular interactions were verified employing RNA immunoprecipitation, meRIP and dual luciferase methods. In vivo validation was performed by xenograft tumor and lung metastasis model. Hematoxylin & eosin and immunohistochemistry staining were used to observe the pathological changes. RESULTS The levels of circNFIX, PD-L1, and IL-6R were upregulated in OC tissues and cell lines, while miR-647 was downregulated. Functional assays showed that loss of circNFIX suppressed the growth, metastasis and immune escape of OC cells both in vitro and in vivo. On the molecular level, the m6A modification of circNFIX was elevated in OC cells, and its expression was positively correlated to m6A modification and depended on IGF2BP1 ∼ 3 recognition. Moreover, circNFIX acted as a competing endogenous RNA for miR-647 to upregulate IL-6R expression, thereby activating JAK/STAT3 signaling and elevating PD-L1 expression. Rescue assays revealed that co-silencing of miR-647 reversed the antitumor effects of circNFIX knockdown on cell proliferation, metastasis and immune escape of OC cells. CONCLUSION This study provided a comprehensive understanding of the molecular mechanism about circNFIX in OC, demonstrating m6A activated-circNFIX accelerated OC development and immune escape via regulating miR-647/IL-6R/PD-L1 pathway.
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Affiliation(s)
- Ruiyu Wang
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University & Key Laboratory of Birth Defects and Related Diseases of Women and Children, Sichuan University, Ministry of Education, Chengdu 610041, Sichuan, PR China
| | - Hui Ye
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University & Key Laboratory of Birth Defects and Related Diseases of Women and Children, Sichuan University, Ministry of Education, Chengdu 610041, Sichuan, PR China
| | - Bowen Yang
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University & Key Laboratory of Birth Defects and Related Diseases of Women and Children, Sichuan University, Ministry of Education, Chengdu 610041, Sichuan, PR China
| | - Mengyin Ao
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University & Key Laboratory of Birth Defects and Related Diseases of Women and Children, Sichuan University, Ministry of Education, Chengdu 610041, Sichuan, PR China
| | - Xiuzhang Yu
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University & Key Laboratory of Birth Defects and Related Diseases of Women and Children, Sichuan University, Ministry of Education, Chengdu 610041, Sichuan, PR China
| | - Yuke Wu
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University & Key Laboratory of Birth Defects and Related Diseases of Women and Children, Sichuan University, Ministry of Education, Chengdu 610041, Sichuan, PR China
| | - Mingrong Xi
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University & Key Laboratory of Birth Defects and Related Diseases of Women and Children, Sichuan University, Ministry of Education, Chengdu 610041, Sichuan, PR China
| | - Minmin Hou
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University & Key Laboratory of Birth Defects and Related Diseases of Women and Children, Sichuan University, Ministry of Education, Chengdu 610041, Sichuan, PR China.
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4
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Chen W, Liu Y, Li L, Liang B, Wang S, Xu X, Xing D, Wu X. The potential role and mechanism of circRNAs in foam cell formation. Noncoding RNA Res 2023; 8:315-325. [PMID: 37032721 PMCID: PMC10074414 DOI: 10.1016/j.ncrna.2023.03.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 03/02/2023] [Accepted: 03/18/2023] [Indexed: 03/29/2023] Open
Abstract
Atherosclerosis is a significant risk factor for coronary heart disease (CHD) and myocardial infarction (MI). Atherosclerosis develops during foam cell generation, which is caused by an imbalance in cholesterol uptake, esterification, and efflux. LOX-1, SR-A1, and CD36 all increased cholesterol uptake. ACAT1 and ACAT2 promote free cholesterol (FC) esterification to cholesteryl esters (CE). The hydrolysis of CE to FC was aided by nCEH. FC efflux was promoted by ABCA1, ABCG1, ADAM10, and apoA-I. SR-BI promotes not only cholesterol uptake but also FC efflux. Circular RNAs (circRNAs), which are single-stranded RNAs with a closed covalent circular structure, have emerged as promising biomarkers and therapeutic targets for atherosclerosis due to their highly tissue, cell, and disease state-specific expression profiles. Numerous studies have shown that circRNAs regulate foam cell formation, acting as miRNA sponges to influence atherosclerosis development by regulating the expression of SR-A1, CD36, ACAT2, ABCA1, ABCG1, ADAM10, apoA-I, SR-B1. Several circRNAs, including circ-Wdr91, circ 0004104, circRNA0044073, circRNA_0001805, circDENND1B, circRSF1, circ 0001445, and circRNA 102682, are potential biomarkers for atherosclerosis to better evaluate cardiovascular risk. It is difficult to deliver synthetic therapeutic circRNAs to the desired target tissues. Nanotechnology, such as GA-RM/GZ/PL, may be an important solution to this problem. In this review, we focus on the potential role and mechanism of circRNA/miRNA axis in foam cell formation in the hopes of discovering new targets for the diagnosis, prevention, and treatment of atherosclerosis.
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Affiliation(s)
- Wujun Chen
- Department of Orthopedics, Cancer Institute, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao Cancer Institute, Qingdao, Shandong, 266071, China
| | - Yihui Liu
- Department of Radiotherapy, Affiliated Hospital of Weifang Medical University, Key Laboratory of Precision Radiation Therapy for Tumors in Weifang City, School of Medical Imaging, Weifang Medical University, Weifang, Shandong, 261031, China
| | - Ling Li
- Department of Pharmacy, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong, 519000, China
| | - Bing Liang
- Department of Orthopedics, Cancer Institute, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao Cancer Institute, Qingdao, Shandong, 266071, China
| | - Shuai Wang
- Department of Radiotherapy, Affiliated Hospital of Weifang Medical University, Key Laboratory of Precision Radiation Therapy for Tumors in Weifang City, School of Medical Imaging, Weifang Medical University, Weifang, Shandong, 261031, China
| | - Xiaodan Xu
- Department of Pathology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, 230022, China
- Corresponding author.
| | - Dongming Xing
- Department of Orthopedics, Cancer Institute, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao Cancer Institute, Qingdao, Shandong, 266071, China
- School of Life Sciences, Tsinghua University, Beijing, 100084, China
- Corresponding author. Department of Orthopedics, Cancer Institute, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao Cancer Institute, Qingdao, Shandong, 266071, China.
| | - Xiaolin Wu
- Department of Orthopedics, Cancer Institute, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao Cancer Institute, Qingdao, Shandong, 266071, China
- Corresponding author. Cancer Institute, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao Cancer Institute, Qingdao, Shandong, 266071, China.
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Yu XZ, Yang BW, Ao MY, Wu YK, Ye H, Wang RY, Xi MR, Hou MM. CircNFIX stimulates the proliferation, invasion, and stemness properties of ovarian cancer cells by enhancing SH3RF3 mRNA stability via binding LIN28B. Kaohsiung J Med Sci 2023; 39:234-243. [PMID: 36495291 DOI: 10.1002/kjm2.12632] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 10/25/2022] [Accepted: 11/15/2022] [Indexed: 12/14/2022] Open
Abstract
We aimed to study the regulatory roles and mechanism of circular nuclear factor IX (circNFIX) in cancer growth and stemness properties of ovarian cancer (OC). CircNFIX and SH3RF3 levels in OC tissues and cells were tested by quantitative real-time PCR. RNase R treatment quantified circNFIX RNA stability. Molecular interaction among circNFIX, LIN28B, and SH3RF3 was predicted by bioinformatics software and validated through RNA immunoprecipitation (RIP) assay. The gain- or loss-experiments of circNFIX on capabilities of metastasis and stemness in vitro were assessed using Cell Counting Kit-8, Transwell, western blot, and sphere-formation assays. CircNFIX and SH3RF3 were markedly elevated in OC tissues and OC cells. Knocking down circNFIX repressed the proliferation, migration, invasion, and stemness properties of A2780 and SKOV3 cells. The RIP assay verified the direct binding relationship between LIN28B, circNFIX, and SH3RF3. Additionally, overexpression of circNFIX elevated the SH3RF3 expression, while this effect was reversed by LIN28B silence. Rescue experiments demonstrated that the overexpression of SH3RF3 reversed the knockdown of circNFIX on OC cells' proliferation, metastasis, and stemness properties. CircNFIX improved the mRNA stability and translation of SH3RF3 via recruiting LIN28B, thus promoting the proliferation, invasion, and stemness properties of OC cells in vitro.
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Affiliation(s)
- Xiu-Zhang Yu
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China.,Key Laboratory of Birth Defects and Related Diseases of Women and Children Sichuan University, Ministry of Education, Chengdu, Sichuan, People's Republic of China
| | - Bo-Wen Yang
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China.,Key Laboratory of Birth Defects and Related Diseases of Women and Children Sichuan University, Ministry of Education, Chengdu, Sichuan, People's Republic of China
| | - Meng-Yin Ao
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China.,Key Laboratory of Birth Defects and Related Diseases of Women and Children Sichuan University, Ministry of Education, Chengdu, Sichuan, People's Republic of China
| | - Yu-Ke Wu
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China.,Key Laboratory of Birth Defects and Related Diseases of Women and Children Sichuan University, Ministry of Education, Chengdu, Sichuan, People's Republic of China
| | - Hui Ye
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China.,Key Laboratory of Birth Defects and Related Diseases of Women and Children Sichuan University, Ministry of Education, Chengdu, Sichuan, People's Republic of China
| | - Rui-Yu Wang
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China.,Key Laboratory of Birth Defects and Related Diseases of Women and Children Sichuan University, Ministry of Education, Chengdu, Sichuan, People's Republic of China
| | - Ming-Rong Xi
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China.,Key Laboratory of Birth Defects and Related Diseases of Women and Children Sichuan University, Ministry of Education, Chengdu, Sichuan, People's Republic of China
| | - Min-Min Hou
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China.,Key Laboratory of Birth Defects and Related Diseases of Women and Children Sichuan University, Ministry of Education, Chengdu, Sichuan, People's Republic of China
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6
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Ribeiro V, Martins SG, Lopes AS, Thorsteinsdóttir S, Zilhão R, Carlos AR. NFIXing Cancer: The Role of NFIX in Oxidative Stress Response and Cell Fate. Int J Mol Sci 2023; 24:ijms24054293. [PMID: 36901722 PMCID: PMC10001739 DOI: 10.3390/ijms24054293] [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: 01/27/2023] [Revised: 02/15/2023] [Accepted: 02/20/2023] [Indexed: 02/24/2023] Open
Abstract
NFIX, a member of the nuclear factor I (NFI) family of transcription factors, is known to be involved in muscle and central nervous system embryonic development. However, its expression in adults is limited. Similar to other developmental transcription factors, NFIX has been found to be altered in tumors, often promoting pro-tumorigenic functions, such as leading to proliferation, differentiation, and migration. However, some studies suggest that NFIX can also have a tumor suppressor role, indicating a complex and cancer-type dependent role of NFIX. This complexity may be linked to the multiple processes at play in regulating NFIX, which include transcriptional, post-transcriptional, and post-translational processes. Moreover, other features of NFIX, including its ability to interact with different NFI members to form homodimers or heterodimers, therefore allowing the transcription of different target genes, and its ability to sense oxidative stress, can also modulate its function. In this review, we examine different aspects of NFIX regulation, first in development and then in cancer, highlighting the important role of NFIX in oxidative stress and cell fate regulation in tumors. Moreover, we propose different mechanisms through which oxidative stress regulates NFIX transcription and function, underlining NFIX as a key factor for tumorigenesis.
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Affiliation(s)
- Vanessa Ribeiro
- cE3c-CHANGE, Department of Animal Biology, Faculty of Sciences, University of Lisbon, 1749-016 Lisbon, Portugal
| | - Susana G. Martins
- cE3c-CHANGE, Department of Animal Biology, Faculty of Sciences, University of Lisbon, 1749-016 Lisbon, Portugal
| | - Ana Sofia Lopes
- cE3c-CHANGE, Department of Animal Biology, Faculty of Sciences, University of Lisbon, 1749-016 Lisbon, Portugal
- Centro Hospitalar de Lisboa Ocidental (CHLO), 1449-005 Lisbon, Portugal
| | - Sólveig Thorsteinsdóttir
- cE3c-CHANGE, Department of Animal Biology, Faculty of Sciences, University of Lisbon, 1749-016 Lisbon, Portugal
| | - Rita Zilhão
- cE3c-CHANGE, Department of Plant Biology, Faculty of Sciences, University of Lisbon, 1749-016 Lisbon, Portugal
| | - Ana Rita Carlos
- cE3c-CHANGE, Department of Animal Biology, Faculty of Sciences, University of Lisbon, 1749-016 Lisbon, Portugal
- Correspondence:
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Ye H, Wang RY, Yu XZ, Wu YK, Yang BW, Ao MY, Xi MR, Hou MM. Exosomal circNFIX promotes angiogenesis in ovarian cancer via miR-518a-3p/TRIM44 axis. Kaohsiung J Med Sci 2023; 39:26-39. [PMID: 36448712 DOI: 10.1002/kjm2.12615] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 09/19/2022] [Accepted: 09/21/2022] [Indexed: 12/05/2022] Open
Abstract
Ovarian cancer (OC) is a gynecological cancer with high mortality. OC-derived exosomal circRNAs can regulate angiogenesis. This study aims to explore the role and mechanism of exosomal circRNA nuclear factor I X (CircNFIX) derived from OC cells in angiogenesis. Quantitative real-time polymerase chain reaction was employed to evaluate the levels of circNFIX, miR-518a-3p, and tripartite motif protein 44 (TRIM44) in OC and adjacent tissues. Exosomes from the ovarian surface epithelial cell (HOSEpiC) and OC cells (SKOV3 or OVCAR3) were isolated by differential centrifugation. Exosomes were cocultured with the human umbilical vein endothelial cells (HUVECs). The angiogenesis capacity was analyzed by Tube formation assay. 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2-H-tetrazolium bromide (MTT) and Transwell assays were used to determine the cell viability and migration ability. The dual-luciferase report, RNA immunoprecipitation (RIP), and RNA pull-down assays were applied to validate the gene's interaction. CircNFIX and TRIM44 expression were higher and miR-518a-3p was lower in OC tissues than in the adjacent tissues. Upregulated circNFIX and TRIM44 were significantly correlated with the tumor size and International Federation of Gynecology and Obstetrics (FIGO) stage of OC patients. HUVECs treated OC-derived exosomes had higher proliferation, migration, and angiogenesis capacities than the control group. While OC-derived exosomal circNFIX silencing restrained HUVECs' proliferation, migration, and angiogenesis, compared with the OC-derived exosomes group. OC-derived exosomal circNFIX positively regulated TRIM44 expression by targeting miR-518a-3p in HUVECs. OC-derived exosomal circNFIX promoted angiogenesis by regulating the Janus-activated kinase/signal transducer and activator of transcription 1 (JAK/STAT1) pathway via miR-518a-3p/TRIM44 axis in HUVECs.
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Affiliation(s)
- Hui Ye
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China.,The Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, Sichuan, China
| | - Rui-Yu Wang
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China.,The Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, Sichuan, China
| | - Xiu-Zhang Yu
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China.,The Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, Sichuan, China
| | - Yu-Ke Wu
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China.,The Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, Sichuan, China
| | - Bo-Wen Yang
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China.,The Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, Sichuan, China
| | - Meng-Yin Ao
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China.,The Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, Sichuan, China
| | - Ming-Rong Xi
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China.,The Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, Sichuan, China
| | - Min-Min Hou
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China.,The Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, Sichuan, China
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8
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Huang L, Huang L, Ming X, Wu J, Liu W, Xiao Y. CircNFIX knockdown inhibited AML tumorigenicity by the miR-876-3p/TRIM31 axis. HEMATOLOGY (AMSTERDAM, NETHERLANDS) 2022; 27:1046-1055. [PMID: 36094501 DOI: 10.1080/16078454.2022.2115699] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND Acute myeloid leukemia (AML) is one of the most common malignant myeloid diseases in adults with a dismal prognosis. We aimed to explore the effects of circNFIX on the proliferation and apoptosis of AML cells. METHODS The expressions of circNFIX, miR-876-3p and tripartite motif (TRIM) 31 in the bone marrow specimens of AML patients and AML cell lines were detected by qRT-PCR or western blot. Cell proliferation was evaluated by 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) and 5-ethynyl-29-deoxyuridine (EdU) assays. Cell cycle and apoptosis were analyzed by flow cytometry. Western blot was used to detect protein expression. The relationship between miR-876-3p and circNFIX or TRIM31 was identified by dual-luciferase reporter assay or RNA pull-down assay. RESULTS The expression level of circNFIX was significantly increased in the bone marrow samples of AML patients and AML cells when compared with normal controls. CircNFIX silencing inhibited AML cell proliferation and promoted apoptosis. Inhibition of miR-876-3p reversed the effect of circNFIX knockdown on AML cell progression. In addition, circNFIX indirectly regulated TRIM31 through miR-876-3p. Further, TRIM31 overexpression counteracted the effect of circNFIX silencing on AML cell proliferation and apoptosis. CONCLUSION CircNFIX knockdown could suppress the proliferation and induce the apoptosis of AML cells by targeting the miR-876-3p/TRIM31 axis.
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Affiliation(s)
- Lifang Huang
- Department of Hematology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Liang Huang
- Department of Blood Transfusion, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Xi Ming
- Department of Hematology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Jiaying Wu
- Department of Hematology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Wanying Liu
- Department of Hematology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Yi Xiao
- Department of Hematology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
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9
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Ren W, Yuan Y, Peng J, Mutti L, Jiang X. The function and clinical implication of circular RNAs in lung cancer. Front Oncol 2022; 12:862602. [PMID: 36338714 PMCID: PMC9629004 DOI: 10.3389/fonc.2022.862602] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Accepted: 08/26/2022] [Indexed: 12/02/2022] Open
Abstract
Lung cancer is the leading cause of cancer-related deaths worldwide. Despite the recent advent of promising new targeted therapies, lung cancer diagnostic strategies still have difficulty in identifying the disease at an early stage. Therefore, the characterizations of more sensible and specific cancer biomarkers have become an important goal for clinicians. Circular RNAs are covalently close, endogenous RNAs without 5' end caps or 3'poly (A) tails and have been characterized by high stability, abundance, and conservation as well as display cell/tissue/developmental stage-specific expressions. Numerous studies have confirmed that circRNAs act as microRNA (miRNA) sponges, RNA-binding protein, and transcriptional regulators; some circRNAs even act as translation templates that participate in multiple pathophysiological processes. Growing evidence have confirmed that circRNAs are involved in the pathogenesis of lung cancers through the regulation of proliferation and invasion, cell cycle, autophagy, apoptosis, stemness, tumor microenvironment, and chemotherapy resistance. Moreover, circRNAs have emerged as potential biomarkers for lung cancer diagnosis and prognosis and targets for developing new treatments. In this review, we will summarize recent progresses in identifying the biogenesis, biological functions, potential mechanisms, and clinical applications of these molecules for lung cancer diagnosis, prognosis, and targeted therapy.
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Affiliation(s)
- Wenjun Ren
- Department of Cardiovascular Surgery, The First People's Hospital of Yunnan Province, Kunming, Yunnan, China
- Department of Thoracic Surgery, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Yixiao Yuan
- Key Laboratory of Molecular Oncology and Epigenetics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Jun Peng
- Department of Thoracic Surgery, The First People's Hospital of Yunnan Province, Kunming, Yunnan, China
| | - Luciano Mutti
- The Sbarro Institute for Cancer Research and Molecular Medicine, Center for Biotechnology, College of Science and Technology, Temple University, Philadelphia, PA, United States
| | - Xiulin Jiang
- Kunming College of Life Science, University of Chinese Academy of Sciences, Beijing, China
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10
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Differential expression profile of mRNAs, lncRNAs and circRNAs reveals potential molecular mechanism in breast cancer. Biosci Rep 2022; 42:231581. [PMID: 35852149 PMCID: PMC9338430 DOI: 10.1042/bsr20220645] [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: 03/25/2022] [Revised: 06/17/2022] [Accepted: 07/18/2022] [Indexed: 12/01/2022] Open
Abstract
In recent years, breast cancer attracts more and more attention because of its high incidence. To explore the molecular functions and mechanisms, we performed RNA sequencing on the tumor tissues and their paired normal tissues from three breast cancer patients. By differential expression analysis, we found 3764 differentially expressed (DE) mRNAs, 5416 DE lncRNAs, and 148 DE circRNAs. Enrichment analysis suggested that the DE lncRNAs and DE circRNAs were enriched in mitochondria and nucleus, which indicated that they may participate in the vital metabolism directly or indirectly, such as fatty acid metabolism. Subsequently, the protein–protein interaction (PPI) network was constructed and we got 8 key proteins, of which the matrix metalloproteinase-9 (MMP9; degree 5) draws our attention. Based on the 38 up-regulated circRNAs and 14 down-regulated circRNAs, we constructed competing endogenous RNA (ceRNA) networks, from which the has-miR-6794-5p has been identified to enriched in the up-regulated network and correlated with the circNFIX directly. At this point, we presented that the circNFIX and MMP9 may play a significant role by regulating fatty acid metabolism in breast cancer.
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11
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Long Noncoding RNAs and Circular RNAs in the Metabolic Reprogramming of Lung Cancer: Functions, Mechanisms, and Clinical Potential. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:4802338. [PMID: 35757505 PMCID: PMC9217624 DOI: 10.1155/2022/4802338] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 11/25/2021] [Accepted: 05/12/2022] [Indexed: 11/18/2022]
Abstract
As key regulators of gene function, long noncoding RNAs (lncRNAs) and circular RNAs (circRNAs) are generally accepted to be involved in lung cancer pathogenesis and progression. Recent research has clarified the phenomenon of metabolic reprogramming in lung cancer because of its significant role in tumor proliferation, migration, invasion, metastasis, and other malignant biological behaviors. Emerging evidence has also shown a relationship between the aberrant expression of lncRNAs and circRNAs and metabolic reprogramming in lung cancer tumorigenesis. This review provides insight regarding the roles of different lncRNAs and circRNAs in lung cancer metabolic reprogramming, by how they target transporter proteins and key enzymes in glucose, lipid, and glutamine metabolic signaling pathways. The clinical potential of lncRNAs and circRNAs as early diagnostic biomarkers and components of therapeutic strategies in lung cancer is further discussed, including current challenges in their utilization from the bench to the bedside and how to adopt a proper delivery system for their therapeutic use.
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12
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Pan J, Xu Z, Guo G, Xu C, Song Z, Li K, Zhong K, Wang D. Circ_nuclear factor I X (circNfix) attenuates pressure overload-induced cardiac hypertrophy via regulating miR-145-5p/ATF3 axis. Bioengineered 2021; 12:5373-5385. [PMID: 34468254 PMCID: PMC8806771 DOI: 10.1080/21655979.2021.1960462] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 07/20/2021] [Accepted: 07/21/2021] [Indexed: 01/14/2023] Open
Abstract
Cardiac hypertrophy can cause heart failure. However, the mechanisms underlying the progression of cardiac hypertrophy remain unclear. Emerging evidence suggests that circular RNAs (circRNAs) play a critical role in cardiac hypertrophy. However, the association between circ_nuclear factor I X (circNfix) and cardiac hypertrophy remain largely unknown. Therefore, the aim of the present study was to explore the role of circNfix in cardiac hypertrophy. In order to detect the function of circNfix in cardiac hypertrophy, cardiomyocytes were stimulated with angiotensin II (Ang II) to mimic the pathogenesis of the disease. In addition, pressure overload-induced cardiac hypertrophy in a mouse model was established using transverse aortic constriction (TAC) surgery. The mechanism via which circNfix regulated cardiac hypertrophy was investigated using RNA pull-down and luciferase reporter assays, and fluorescence in situ hybridization (FISH). circNfix was downregulated in Ang II-treated cardiomyocytes. Similarly, circNfix expression was markedly downregulated in mice following TAC surgery. In addition, circNfix overexpression significantly prevented the progression of cardiac hypertrophy in TAC-treated mice. Luciferase activity and RNA pull-down assays indicated that circNfix could indirectly target activating transcription factor 3 (ATF3) by binding with microRNA (miR)-145-5p in cardiomyocytes. miR-145-5p overexpression or ATF3 knockdown could reverse the effects of circNfix in Ang II-treated mouse cardiomyocytes. circNfix attenuated pressure overload-induced cardiac hypertrophy by regulating the miR-145-5p/ATF3 axis. Therefore, circNfix may serve as a molecular target for cardiac hypertrophy treatment.
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Affiliation(s)
- Jun Pan
- Department of Thoracic and Cardiovascular Surgery, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, Jiangsu, China
| | - Zhenjun Xu
- Department of Thoracic and Cardiovascular Surgery, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, Jiangsu, China
| | - Guanjun Guo
- Department of Thoracic and Cardiovascular Surgery, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, Jiangsu, China
| | - Can Xu
- Department of Thoracic and Cardiovascular Surgery, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, Jiangsu, China
| | - Zhizhao Song
- Department of Thoracic and Cardiovascular Surgery, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, Jiangsu, China
| | - Kunsheng Li
- Department of Thoracic and Cardiovascular Surgery, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, Jiangsu, China
| | - Kai Zhong
- Department of Thoracic and Cardiovascular Surgery, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, Jiangsu, China
| | - Dongjin Wang
- Department of Thoracic and Cardiovascular Surgery, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, Jiangsu, China
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13
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Liu Z, Li M. Circular RNAs and their role in renal cell carcinoma: a current perspective. Cancer Cell Int 2021; 21:469. [PMID: 34488780 PMCID: PMC8422676 DOI: 10.1186/s12935-021-02181-7] [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: 04/01/2021] [Accepted: 08/27/2021] [Indexed: 02/07/2023] Open
Abstract
Circular RNAs (circRNAs) are a new class of long non-coding RNAs, that results from a special type of alternative splicing referred to as back-splicing. They are widely distributed in eukaryotic cells and demonstrate tissue-specific expression patterns in humans. CircRNAs actively participate in various important biological activities like gene transcription, pre-mRNA splicing, translation, sponging miRNA and proteins, etc. With such diverse biological functions, circRNAs not only play a crucial role in normal human physiology, as well as in multiple diseases, including cancer. In this review, we summarized our current understanding of circRNAs and their role in renal cell carcinoma (RCC), the most common cancer of kidneys. Studies have shown that the expression level of several circRNAs are considerably varied in RCC samples and RCC cell lines suggesting the potential role of these circRNAs in RCC progression. Several circRNAs promote RCC development and progression mostly via the miRNA/target gene axis making them ideal candidates for novel anti-cancer therapy. Apart from these, there are a few circRNAs that are significantly downregulated in RCC and overexpression of these circRNAs leads to suppression of RCC growth. Differential expression patterns and novel functions of circRNAs in RCC suggest that circRNAs can be utilized as potential biomarkers and therapeutic targets for RCC therapy. However, our current understanding of the role of circRNA in RCC is still in its infancy and much comprehensive research is needed to achieve clinical translation of circRNAs as biomarkers and therapeutic targets in developing effective treatment options for RCC.
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Affiliation(s)
- Zhongyuan Liu
- Department of Urology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, 110004, People's Republic of China
| | - Ming Li
- Department of Urology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, 110004, People's Republic of China.
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14
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Dong H, Zhou J, Cheng Y, Wang M, Wang S, Xu H. Biogenesis, Functions, and Role of CircRNAs in Lung Cancer. Cancer Manag Res 2021; 13:6651-6671. [PMID: 34466035 PMCID: PMC8403226 DOI: 10.2147/cmar.s324812] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 08/09/2021] [Indexed: 12/24/2022] Open
Abstract
CircRNAs, a class of endogenous non-coding RNAs with closed-loop structures, have attracted increasing attention because of their good stability, high specificity of tissue expression, long half-life, and highly conserved sequence. CircRNAs have multiple biological functions, including miRNA sponge, transcription regulator, protein translation, interaction with protein, RNA maturation, and so on. These functions indicate the important role of circRNAs in tumorigenesis and malignant progression and their potential as potent diagnostic biomarkers and therapeutic molecules. In recent years, an increasing body of evidence suggests that circRNAs play a crucial role in proliferation, migration, invasion, and apoptosis of lung cancer cells. Therefore, circRNAs have gradually become a research focus in the diagnosis and treatment of lung cancer patients. This review summarizes the classification, biogenesis, and function of circRNAs, and discusses the role of circRNAs in the diagnosis, prognosis, and treatment of lung cancer patients.
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Affiliation(s)
- Huanhuan Dong
- Department of Clinical Laboratory, Harbin Medical University Cancer Hospital, Harbin, 150081, People's Republic of China
| | - Junliang Zhou
- Department of Clinical Laboratory, Harbin Medical University Cancer Hospital, Harbin, 150081, People's Republic of China
| | - Yue Cheng
- Department of Clinical Laboratory, Harbin Medical University Cancer Hospital, Harbin, 150081, People's Republic of China
| | - Meiqi Wang
- Department of Clinical Laboratory, Harbin Medical University Cancer Hospital, Harbin, 150081, People's Republic of China
| | - Shuqing Wang
- Department of Clinical Laboratory, Harbin Medical University Cancer Hospital, Harbin, 150081, People's Republic of China
| | - Hui Xu
- Department of Clinical Laboratory, Harbin Medical University Cancer Hospital, Harbin, 150081, People's Republic of China
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15
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Xiao E, Zhang D, Zhan W, Yin H, Ma L, Wei J, Kang Y, Mao Z. circNFIX facilitates hepatocellular carcinoma progression by targeting miR-3064-5p/HMGA2 to enhance glutaminolysis. Am J Transl Res 2021; 13:8697-8710. [PMID: 34539988 PMCID: PMC8430108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 05/14/2021] [Indexed: 06/13/2023]
Abstract
Hepatocellular carcinoma (HCC) is acknowledged to be a fatal malignant cancer around the world. Circular RNAs (circRNAs) function as crucial regulators in the pathological procession of HCC. Here, we elucidated the biological function of a novel circRNA, circNFIX, in HCC tumorigenesis. qRT-PCR was performed to determine the expressions of circNFIX, miR-3064-5p, and HMGA2. circNFIX stability was evaluated after treatment with ribonuclease R. The growth and invasion of HCC cells were assessed by CCK8 and transwell assays. Protein levels were measured by Western blotting. The levels of glutaminolysis metabolites were evaluated by commercial kits. Dual-luciferase report assay, RNA immunoprecipitation (RIP) assay and RNA pull-down assay were performed for validating the interaction between miR-3064-5p and circNFIX/HMGA2. Tumor growth in vivo was detected using xenograft assay. Our results showed that circNFIX was remarkably up-regulated in HCC and was associated with a poor survival. Knockdown of circNFIX repressed proliferation, invasion and glutaminolysis of HCC cells. Moreover, circNFIX directly sponged miR-3064-5p to release HMGA2 expression, and thus conferred the malignant development of HCC. In conclusion, circNFIX serves as a competing endogenous RNA to accelerate HCC progression via regulating miR-3064-5p/HMGA2 axis, suggesting a therapeutic strategy for HCC intervention.
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Affiliation(s)
- Erhui Xiao
- Department of Infectious Diseases, He'nan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of He'nan University Zhengzhou, He'nan Province, China
| | - Dongmei Zhang
- Department of Infectious Diseases, He'nan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of He'nan University Zhengzhou, He'nan Province, China
| | - Weili Zhan
- Department of Infectious Diseases, He'nan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of He'nan University Zhengzhou, He'nan Province, China
| | - Hui Yin
- Department of Infectious Diseases, He'nan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of He'nan University Zhengzhou, He'nan Province, China
| | - Li Ma
- Department of Infectious Diseases, He'nan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of He'nan University Zhengzhou, He'nan Province, China
| | - Junfeng Wei
- Department of Infectious Diseases, He'nan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of He'nan University Zhengzhou, He'nan Province, China
| | - Yi Kang
- Department of Infectious Diseases, He'nan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of He'nan University Zhengzhou, He'nan Province, China
| | - Zhongshan Mao
- Department of Infectious Diseases, He'nan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of He'nan University Zhengzhou, He'nan Province, China
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16
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Ji X, Sun W, Lv C, Huang J, Zhang H. Circular RNAs Regulate Glucose Metabolism in Cancer Cells. Onco Targets Ther 2021; 14:4005-4021. [PMID: 34239306 PMCID: PMC8259938 DOI: 10.2147/ott.s316597] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 06/18/2021] [Indexed: 12/12/2022] Open
Abstract
Circular RNAs (circRNAs) were originally thought to result from RNA splicing errors. However, it has been shown that circRNAs can regulate cancer onset and progression in various ways. They can regulate cancer cell proliferation, differentiation, invasion, and metastasis. Moreover, they modulate glucose metabolism in cancer cells through different mechanisms such as directly regulating glycolytic enzymes and glucose transporter (GLUT) or indirectly regulating signal transduction pathways. In this review, we elucidate on the role of circRNAs in regulating glucose metabolism in cancer cells, which partly explains the pathogenesis of malignant tumors, and provides new therapeutic targets or new diagnostic and prognostic markers for human cancers.
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Affiliation(s)
- Xiaoyu Ji
- Department of Thyroid Surgery, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, 110001, People's Republic of China
| | - Wei Sun
- Department of Thyroid Surgery, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, 110001, People's Republic of China
| | - Chengzhou Lv
- Department of Thyroid Surgery, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, 110001, People's Republic of China
| | - Jiapeng Huang
- Department of Thyroid Surgery, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, 110001, People's Republic of China
| | - Hao Zhang
- Department of Thyroid Surgery, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, 110001, People's Republic of China
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Lu J, Ma X, Lin J, Hou P. Circ_0020123 Increases ZFX Expression to Facilitate Non-Small Cell Lung Cancer Progression by Sponging miR-142-3p. Cancer Manag Res 2021; 13:1687-1698. [PMID: 33633466 PMCID: PMC7901561 DOI: 10.2147/cmar.s295595] [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: 12/03/2020] [Accepted: 01/26/2021] [Indexed: 12/14/2022] Open
Abstract
Background Circular RNA (circRNA) is involved in the progression of various cancers and has been shown to be an important potential target for cancer therapy. Circ_0020123 has been found to act as oncogene to participate in the malignant progression of non-small cell lung cancer (NSCLC). Therefore, exploring new mechanisms of circ_0020123 regulating NSCLC progression will help us better understand its role in NSCLC. Methods Relative expression levels of circ_0020123, microRNA (miR)-142-3p, and zinc-finger protein X-linked (ZFX) in tissues and cells were determined by quantitative real-time PCR (qRT-PCR). Cell proliferation, apoptosis, migration and invasion were assessed using cell counting kit 8 (CCK8) assay, colony formation assay, flow cytometry and transwell assay. Western blot (WB) analysis was used to detect relative protein level. Besides, the interaction between miR-142-3p and circ_0020123 or ZFX was confirmed by dual-luciferase reporter assay and RNA immunoprecipitation (RIP) assay. Results Our results showed that circ_0020123 was upregulated in NSCLC, and its knockdown could suppress NSCLC cell proliferation, migration, invasion, and promote apoptosis. Circ_0020123 was found to interact with miR-142-3p. The inhibition effect of circ_0020123 silencing on NSCLC progression could be reversed by miR-142-3p inhibitor. ZFX could be targeted by miR-142-3p. The silencing of ZFX could hinder the progression of NSCLC and abolish the promotion effect of miR-142-3p inhibitor on NSCLC progression. In addition, circ_0020123 silencing inhibited NSCLC tumorigenesis by the miR-142-3p/ZFX axis. Conclusion These findings suggested that circ_0020123 might be a potential therapy target for NSCLC, which could promote NSCLC progression through regulating the miR-142-3p/ZFX axis.
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Affiliation(s)
- Jiancong Lu
- Department of Respiratory Diseases, Huizhou Municipal Central Hospital, Huizhou, 516001, People's Republic of China
| | - Ximiao Ma
- Department of Thoracic Surgery, Central South University Xiangya School of Medicine Affiliated Haikou Hospital, Haikou, People's Republic of China
| | - Junhong Lin
- Department of Respiratory Diseases, Huizhou Municipal Central Hospital, Huizhou, 516001, People's Republic of China
| | - Peifeng Hou
- Department of Oncology, Fujian Medical University Union Hospital, Fuzhou, 350001, Fujian, People's Republic of China.,Fujian Key Laboratory of Translational Cancer Medicine, Fujian Provincial Cancer Hospital, Fuzhou, 350001, Fujian, People's Republic of China.,Fujian Medical University Stem Cell Research Institute, Fujian Medical University, Fuzhou, 350001, Fujian, People's Republic of China
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