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Abdi E, Latifi-Navid S, Panahi A, Latifi-Navid H. LncRNA polymorphisms and lung cancer risk. Per Med 2023; 20:511-522. [PMID: 37916472 DOI: 10.2217/pme-2023-0081] [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] [Indexed: 11/03/2023]
Abstract
Lung cancer (LC) imposes a significant burden, and is associated with high mortality and morbidity among malignant tumors. Aberrant expression of particular lncRNAs is closely linked to LC. LncRNA polymorphisms cause abnormal expression levels and/or structural dysfunction. They can affect the progression of cancer, survival, response to chemotherapy and recurrence rates in cancer patients. The present article provides a comprehensive overview of the effect of lncRNA genetic polymorphisms on LC. It is proposed that lncRNA-related variants can be used to predict cancer risk and therapeutic outcomes. More large-scale trials on diverse ethnic groups are required to validate the results, thus personalizing LC therapy based on lncRNA genotypes.
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Affiliation(s)
- Esmat Abdi
- Department of Biology, Faculty of Sciences, University of Mohaghegh Ardabili, Ardabil, 5619911367, Iran
| | - Saeid Latifi-Navid
- Department of Biology, Faculty of Sciences, University of Mohaghegh Ardabili, Ardabil, 5619911367, Iran
| | - Alireza Panahi
- Department of Biology, Faculty of Sciences, University of Mohaghegh Ardabili, Ardabil, 5619911367, Iran
| | - Hamid Latifi-Navid
- Department of Molecular Medicine, National Institute of Genetic Engineering and Biotechnology, Tehran, 14965/161, Iran
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2
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Huang Y, Bao T, Zhang T, Ji G, Wang Y, Ling Z, Li W. Machine Learning Study of SNPs in Noncoding Regions to Predict Non-small Cell Lung Cancer Susceptibility. Clin Oncol (R Coll Radiol) 2023; 35:701-712. [PMID: 37689528 DOI: 10.1016/j.clon.2023.08.010] [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: 01/10/2023] [Revised: 07/23/2023] [Accepted: 08/30/2023] [Indexed: 09/11/2023]
Abstract
Non-small cell lung cancer (NSCLC) is the most common pathological subtype of lung cancer. Both environmental and genetic factors have been reported to impact the lung cancer susceptibility. We conducted a genome-wide association study (GWAS) of 287 NSCLC patients and 467 healthy controls in a Chinese population using the Illumina Genome-Wide Asian Screening Array Chip on 712,095 SNPs (single nucleotide polymorphisms). Using logistic regression modeling, GWAS identified 17 new noncoding region SNP loci associated with the NSCLC risk, and the top three (rs80040741, rs9568547, rs6010259) were under a stringent p-value (<3.02e-6). Notably, rs80040741 and rs6010259 were annotated from the intron regions of MUC3A and MLC1, respectively. Together with another five SNPs previously reported in Chinese NSCLC patients and another four covariates (e.g., smoking status, age, low dose CT screening, sex), a predictive model by machine learning methods can separate the NSCLC from healthy controls with an accuracy of 86%. This is the first time to apply machine learning method in predicting the NSCLC susceptibility using both genetic and clinical characteristics. Our findings will provide a promising method in NSCLC early diagnosis and improve our understanding of applying machine learning methods in precision medicine.
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Affiliation(s)
- Y Huang
- Health Management Center, General Practice Medical Center, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China; Institute of Respiratory Healthy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - T Bao
- Health Management Center, General Practice Medical Center, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China; Institute of Respiratory Healthy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - T Zhang
- Health Management Center, General Practice Medical Center, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China; Institute of Respiratory Healthy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - G Ji
- Health Management Center, General Practice Medical Center, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China; Institute of Respiratory Healthy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Y Wang
- Health Management Center, General Practice Medical Center, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China; Institute of Respiratory Healthy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Z Ling
- Chengdu Genepre Technology Co., LTD, Chengdu, Sichuan, China
| | - W Li
- Institute of Respiratory Healthy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China; Department of Respiratory and Critical Care Medicine, Institute of Respiratory Healthy, Precision Medicine Key Laboratory of Sichuan Province, Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China; Precision Medicine Center, Precision Medicine Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China; The Research Units of West China, Chinese Academy of Medical Sciences, West China Hospital, Chengdu, Sichuan 610041, China; State Key Laboratory of Respiratory Health and Multimorbidity, Chengdu, Sichuan 610041, West China Hospital, China.
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3
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Liu C, Liu X, Li H, Kang Z. Advances in the regulation of adipogenesis and lipid metabolism by exosomal ncRNAs and their role in related metabolic diseases. Front Cell Dev Biol 2023; 11:1173904. [PMID: 37791070 PMCID: PMC10543472 DOI: 10.3389/fcell.2023.1173904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2023] [Accepted: 08/15/2023] [Indexed: 10/05/2023] Open
Abstract
Exosomes are membrane-bound extracellular vesicles released following the fusion of multivesicular bodies (MVBs) with the cell membrane. Exosomes transport diverse molecules, including proteins, lipids, DNA and RNA, and regulate distant intercellular communication. Noncoding RNA (ncRNAs) carried by exosomes regulate cell-cell communication in tissues, including adipose tissue. This review summarizes the action mechanisms of ncRNAs carried by exosomes on adipocyte differentiation and modulation of adipogenesis by exosomal ncRNAs. This study aims to provide valuable insights for developing novel therapeutics.
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Affiliation(s)
- Cong Liu
- Department of Breast Surgery, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Xilin Liu
- Department of Hand and Foot Surgery, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Hong Li
- Department of Nursing, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Zhichen Kang
- Department of Rehabilitation, The Second Hospital of Jilin University, Changchun, China
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4
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Mitroi AF, Leopa N, Dumitru E, Dumitru A, Tocia C, Popescu I, Mitroi A, Popescu RC. TCF7L2, CASC8, and GREM1 polymorphism and colorectal cancer in south-eastern Romanian population. Medicine (Baltimore) 2023; 102:e33056. [PMID: 36800588 PMCID: PMC9936048 DOI: 10.1097/md.0000000000033056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/19/2023] Open
Abstract
Colorectal cancer (CRC) is a heterogeneous disease with an increasing trend and with multiple epigenetic alterations and different molecular features, a major cause of mortality and morbidity. The Wnt/β-Catenin pathway is involved in multiple aspects of cell dynamics, architecture of developing gastrointestinal tissues, and intestinal tissue homeostasis in adults, but its aberrant activity plays an important role in every aspect of colorectal carcinogenesis. The aim of our study was to investigate the association of the TCF7L2 rs7903146, CASC8 rs6983267, and Gremlin1 (GREM1) rs16969681 polymorphism in patients with CRC without other pathologies. A case-control study conducted on 31 patients diagnosed with CRC and 30 healthy controls age and sex-matched with the patients. Real time PCR was used to determine the genotypes of rs7903146, rs698267, rs1696981. We observed no association between rs6983267 and rs16969681 polymorphism and risk of CRC and low association between TCF7L2, rs7903146, polymorphism and risk of CRC. The recessive model of the TCF7L2 rs7903146 had an OR of 1.6 (95% CI 0.058-4.414, P < .05) which means that TT genotype increased the risk and possibility of development of CRC. Our study did not confirm a significant association between TCF7L2 rs7903146, CASC8 rs6983267, and GREM1 rs16969681 with CRC, but emphasizes the possibility of existence of a high risk of CRC development in patients with TT genotype of rs7903146.
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Affiliation(s)
- Anca Florentina Mitroi
- Department of Pathology, Emergency Hospital of Constanța, Romania
- Ovidius University, Faculty of Medicine and Pharmacy Constanta, Romania
| | - Nicoleta Leopa
- Ovidius University, Faculty of Medicine and Pharmacy Constanta, Romania
- Department of General Surgery, Emergency Hospital of Constanța, Romania
- * Correspondence: Nicoleta Leopa, Ovidius University, Faculty of Medicine and Pharmacy Constanta, 900470, Romania (e-mail: )
| | - Eugen Dumitru
- Ovidius University, Faculty of Medicine and Pharmacy Constanta, Romania
- Department of Gastroenterology, Emergency Hospital of Constanța, Romania
| | - Andrei Dumitru
- Ovidius University, Faculty of Medicine and Pharmacy Constanta, Romania
- Department of Gastroenterology, Emergency Hospital of Constanța, Romania
| | - Cristina Tocia
- Ovidius University, Faculty of Medicine and Pharmacy Constanta, Romania
- Department of Gastroenterology, Emergency Hospital of Constanța, Romania
| | - Ioana Popescu
- Department of Gastroenterology, Emergency Hospital of Constanța, Romania
| | - Adrian Mitroi
- Ovidius University, Faculty of Medicine and Pharmacy Constanta, Romania
| | - Răzvan Cătălin Popescu
- Ovidius University, Faculty of Medicine and Pharmacy Constanta, Romania
- Department of General Surgery, Emergency Hospital of Constanța, Romania
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5
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He J, Wu W. Comprehensive landscape and future perspectives of long noncoding RNAs (lncRNAs) in colorectal cancer (CRC): Based on a bibliometric analysis. Noncoding RNA Res 2022; 8:33-52. [PMID: 36311994 PMCID: PMC9582894 DOI: 10.1016/j.ncrna.2022.10.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 10/03/2022] [Accepted: 10/03/2022] [Indexed: 11/06/2022] Open
Abstract
This review aimed to use bibliometric analysis to sort out, analyze and summarize the knowledge foundation and hot topics in the field of long noncoding RNAs (lncRNAs) in colorectal cancer (CRC), and point out future trends to inspire related research and innovation. We used CiteSpace to analyze publication outputs, countries, institutions, authors, journals, references, and keywords. Knowledge foundations, hotspots, and future trends were then depicted. The overall research showed the trend of biomedical-oriented multidisciplinary. Much evidence indicates that lncRNA plays the role of oncogene or tumor suppressor in the occurrence and development of CRC. Besides, many lncRNAs have multiple mechanisms. lncRNAs and metastasis of CRC, lncRNAs and drug resistance of CRC, and the clinical application of lncRNAs in CRC are current research hotspots. Through insight into the development trend of lncRNAs in CRC, this study will help researchers extract hidden valuable information for further research.
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Affiliation(s)
- Jia He
- Faculty Affairs and Human Resources Management Department, Southwest Medical University, Luzhou, China
| | - Wenhan Wu
- Department of General Surgery (Gastrointestinal Surgery), The Affiliated Hospital of Southwest Medical University, Luzhou, China,Corresponding author.
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6
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Yang C, Chen K. Long Non-Coding RNA in Esophageal Cancer: A Review of Research Progress. Pathol Oncol Res 2022; 28:1610140. [PMID: 35241975 PMCID: PMC8885534 DOI: 10.3389/pore.2022.1610140] [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: 10/20/2021] [Accepted: 01/26/2022] [Indexed: 12/24/2022]
Abstract
In recent years, there has been significant progress in the diagnosis and treatment of esophageal cancer. However, owing to the lack of early diagnosis strategies and treatment targets, the prognosis of patients with esophageal cancer remains unsatisfactory. There is an urgent need to identify novel biomarkers and treatment targets for esophageal cancer. With the development of genomics, long-chain non-coding RNAs (LncRNAs), which were once considered transcriptional “noise,” are being identified and characterized rapidly in large numbers. Recent research shows that LncRNAs are closely related to a series of steps in tumor development and play an important regulatory role in DNA replication, transcription, and post-transcriptional regulation. The abnormal expression of LncRNAs leads to tumor cell proliferation, migration, invasion, and treatment resistance. This review focuses on the latest progress in research on the abnormal expression and functional mechanisms of LncRNAs in esophageal cancer. Further, it discusses the potential applications of these findings towards achieving an early diagnosis, improving treatment efficacy, and evaluating the prognosis of esophageal cancer.
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Affiliation(s)
- Chenbo Yang
- Department of Pathology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Henan Key Laboratory of Tumor Pathology, Zhengzhou University, Zhengzhou, China
| | - Kuisheng Chen
- Department of Pathology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Henan Key Laboratory of Tumor Pathology, Zhengzhou University, Zhengzhou, China
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7
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Abdi E, Latifi-Navid S, Latifi-Navid H. Long noncoding RNA polymorphisms and colorectal cancer risk: Progression and future perspectives. ENVIRONMENTAL AND MOLECULAR MUTAGENESIS 2022; 63:98-112. [PMID: 35275417 DOI: 10.1002/em.22477] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 02/25/2022] [Accepted: 03/08/2022] [Indexed: 06/14/2023]
Abstract
Colorectal cancer (CRC) is one of the most common cancers causing death worldwide. Many long noncoding RNAs (lncRNAs) have possible carcinogenic or tumor suppressor functions. Some lncRNA polymorphisms are useful for predicting cancer risk, and may help advance personalized therapy management. While the use of lncRNAs as biomarkers is promising, there are still drawbacks, and further studies are needed to verify the consistency of current outcomes in large-scale populations and different ethnicities. Single nucleotide polymorphisms (SNPs) can disrupt a lncRNAs' function, thus enhancing or hindering disease occurrence. SNPs can directly influence the lncRNA expression by interfering with transcription factor binding or affecting indirectly a regulatory factors' expression. Moreover, the association between lncRNAs and other RNAs or proteins may be disrupted by SNPs. This research sought to assess the association between lncRNA polymorphisms and CRC risk, as well as clinical and therapeutic consequences in certain cases.
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Affiliation(s)
- Esmat Abdi
- Department of Biology, Faculty of Sciences, University of Mohaghegh Ardabili, Ardabil, Iran
| | - Saeid Latifi-Navid
- Department of Biology, Faculty of Sciences, University of Mohaghegh Ardabili, Ardabil, Iran
| | - Hamid Latifi-Navid
- Department of Molecular Medicine, National Institute of Genetic Engineering and Biotechnology, Tehran, Iran
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8
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The Roles of the Colon Cancer Associated Transcript 2 (CCAT2) Long Non-Coding RNA in Cancer: A Comprehensive Characterization of the Tumorigenic and Molecular Functions. Int J Mol Sci 2021; 22:ijms222212491. [PMID: 34830370 PMCID: PMC8620102 DOI: 10.3390/ijms222212491] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 11/17/2021] [Accepted: 11/17/2021] [Indexed: 12/12/2022] Open
Abstract
Colon cancer-associated transcript 2 (CCAT2) is an intensively studied lncRNA with important regulatory roles in cancer. As such, cumulative studies indicate that CCAT2 displays a high functional versatility due to its direct interaction with multiple RNA binding proteins, transcription factors, and other species of non-coding RNA, especially microRNA. The definitory mechanisms of CCAT2 are its role as a regulator of the TCF7L2 transcription factor, enhancer of MYC expression, and activator of the WNT/β-catenin pathway, as well as a role in promoting and maintaining chromosome instability through the BOP1–AURKB pathway. Additionally, we highlight how the encompassing rs6983267 SNP has been shown to confer CCAT2 with allele-specific functional and structural particularities, such as the allelic-specific reprogramming of glutamine metabolism. Additionally, we emphasize CCAT2’s role as a competitive endogenous RNA (ceRNA) for multiple tumor suppressor miRNAs, such as miR-4496, miR-493, miR-424, miR-216b, miR-23b, miR-34a, miR-145, miR-200b, and miR-143 and the pro-tumorigenic role of the altered regulatory axis. Additionally, due to its upregulation in tumor tissues, wide distribution across cancer types, and presence in serum samples, we outline CCAT2’s potential as a biomarker and disease indicator and its implications for the development of resistance against current cancer therapy regiments and metastasis.
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9
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Wu Z, Liang Y, Zuo Y, Xu Y, Mai H, Pi L, Che D, Gu X. The lncRNA CCAT2 Rs6983267 G Variant Contributes to Increased Sepsis Susceptibility in a Southern Chinese Population. Infect Drug Resist 2021; 14:2969-2976. [PMID: 34377001 PMCID: PMC8349528 DOI: 10.2147/idr.s311717] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Accepted: 05/21/2021] [Indexed: 12/15/2022] Open
Abstract
Purpose Accumulating evidence demonstrates that genetic susceptibility genes can be used as biomarkers to assess sepsis susceptibility, and genetic variation is associated with susceptibility and clinical outcomes in patients with sepsis and inflammatory disease. Although studies have shown that the lncRNA CCAT2 is involved in inflammatory diseases, it remains unclear whether CCAT2 gene polymorphisms are associated with susceptibility to inflammatory diseases, such as sepsis, in children. Methods We genotyped the rs6983267 CCAT2 polymorphism in 474 cases (pediatric sepsis) and 678 controls using TaqMan methods, and odds ratios (ORs) and 95% confidence intervals (CIs) were used to evaluate the strength of associations. Results Our results indicate that the rs6983267 T > G polymorphism is significantly associated with an increased risk of sepsis in children (TG and TT: adjusted OR = 1.311, 95% CI = 1.016–1.743, GG and TT: adjusted OR = 1.444, 95% CI = 1.025–2.034 dominant model: GG/TG vs TT adjusted OR = 1.362, 95% CI = 1.055–1.756). Furthermore, the risk effect was more pronounced in children younger than 60 months who were male and who had sepsis. Conclusion We found that the CCAT2 gene polymorphism rs6983267 T > G may be associated with an increased risk of pediatric sepsis in southern China. A larger multicenter study should be performed to confirm these results.
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Affiliation(s)
- Zhiyuan Wu
- Pediatric Intensive Care Unit. Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, People's Republic of China
| | - Yufeng Liang
- Pediatric Intensive Care Unit. Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, People's Republic of China
| | - Yunlong Zuo
- Pediatric Intensive Care Unit. Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, People's Republic of China
| | - Yufen Xu
- Department of Clinical Biological Resource Bank, Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, People's Republic of China
| | - Hanran Mai
- Department of Clinical Biological Resource Bank, Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, People's Republic of China
| | - Lei Pi
- Department of Clinical Biological Resource Bank, Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, People's Republic of China
| | - Di Che
- Department of Clinical Biological Resource Bank, Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, People's Republic of China
| | - Xiaoqiong Gu
- Department of Clinical Biological Resource Bank, Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, People's Republic of China
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Yu WL, Yao JJ, Xie ZZ, Huang YJ, Xiao S. LncRNA PRNCR1 rs1456315 and CCAT2 rs6983267 Polymorphisms on 8q24 Associated with Lung Cancer. Int J Gen Med 2021; 14:255-266. [PMID: 33542645 PMCID: PMC7851581 DOI: 10.2147/ijgm.s290997] [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: 11/12/2020] [Accepted: 12/18/2020] [Indexed: 12/12/2022] Open
Abstract
Background Long noncoding RNA single nucleotide polymorphisms (lncRNA-SNPs) PCAT1 rs710886, PRNCR1 rs1456315 and CCAT2 rs6983267 on 8q24 region present generalizability in the susceptibility to multiple cancers, however, the influence of rs710886, rs1456315 and rs6983267 on lung cancer has not been assessed. The aim of this study was to investigate associations between three lncRNA-SNPs and lung cancer. Methods A case–control study was performed on 438 patients with lung cancer and 456 healthy controls in the Han population from southern China. The collected samples were genotyped by the TaqMan genotyping, and the association with clinical characteristics, including age, gender, drinking status, smoking status, pathological types and clinical stages were analyzed. And the SNP function prediction was based on lncRNASNP2, RNAfold and GTEx. Results The rs1456315 T allele increased the risk of lung cancer [OR=1.95, 95% CI (1.58–2.43), P=0.003] compared to the rs1456315 C allele, and rs1456315 significantly increased the risk of lung cancer in the dominant model [OR=1.86, 95% CI (1.16–3.00), P=0.002]. The rs6983267 G allele, compared with the T allele, increased the risk of lung cancer [OR=1.29, 95% CI (1.07–1.57), P=0.007], and rs6983267 was identified as a risk factor for lung cancer [OR=1.28, 95% CI (1.06–1.55), P=0.003] in the additive model. Both rs1456315 and rs6983267 demonstrated significance after adjusting for the smoking status, drinking status and age. The structure prediction found rs6983267 and rs1456315 influence the secondary structure of its lncRNA. The results from lncRNASNP2 indicated that rs6983267 and rs1456315 change gain/loss target of miRNAs. Conclusion PRNCR1 rs1456315 and CCAT2 rs6983267 on 8q24 region are significantly associated with lung cancer in the Han population of southern China and alter the potential biological function in bioinformatic analysis, and the results further extended generalism of the susceptibility of cancer-associated lncRNA-SNPs to lung cancer and underlying mechanism involved in lung cancer.
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Affiliation(s)
- Wei-Ling Yu
- Oncology Department of Haikou City People's Hospital, Haikou 570208, Hainan, People's Republic of China.,Key Laboratory of Emergency and Trauma, Ministry of Education of Hainan Medical University, Haikou 571199, Hainan, People's Republic of China
| | - Jin-Jian Yao
- Key Laboratory of Emergency and Trauma, Ministry of Education of Hainan Medical University, Haikou 571199, Hainan, People's Republic of China.,Emergency Center of Hainan General Hospital Affiliated to Hainan Medical University, Haikou 570311, Hainan, People's Republic of China
| | - Zong-Zhou Xie
- Oncology Department of Haikou City People's Hospital, Haikou 570208, Hainan, People's Republic of China
| | - Yan-Jing Huang
- Oncology Department of Hainan General Hospital Affiliated to Hainan Medical University, Haikou 570311, Hainan, People's Republic of China
| | - Sha Xiao
- School of Public Health of Hainan Medical University, Haikou 571199, Hainan, People's Republic of China
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11
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Chen M, Zhao M, Hou Y, Zhu B. Expression of lncRNA CCAT2 in children with neuroblastoma and its effect on cancer cell growth. Mol Cell Biochem 2021; 476:1871-1879. [PMID: 33475889 DOI: 10.1007/s11010-020-04042-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Accepted: 12/22/2020] [Indexed: 11/28/2022]
Abstract
The aim of this study was to determine the expression of long-chain non-coding RNA (lncRNA) colon cancer-associated transcript 2 (CCAT2) in children with neuroblastoma and its effect on cancer cell growth. A polymerase chain reaction assay was carried out to quantify lncRNA CCAT2 miRNA in neuroblastoma cells, corresponding paracancerous cells, SH-SY5Y and SK-N-SH cells, and human umbilical vein endothelial cells (HUVEC), and two groups of children with different lncRNA CCAT2 expression were compared in clinical pathological parameters and prognosis. CCAT2-NC and si-CCAT2 were transfected into SH-SY5Y cells, separately. Then a 3-(4,5-Dimethylthiazol-2-yl)-2,5-Diphenyltetrazolium Bromide (MTT) assay was carried out to analyze the cell proliferation, migration, and invasion ability, a flow cytometry to detect cell apoptosis, and a Western blotting (WB) assay to quantify p53 and Bcl-2 proteins. lncRNA CCAT2 expression in cancer tissues of children with neuroblastoma was notably higher than that in corresponding paracancerous tissues (P < 0.05), and children with different tissue differentiation, tumor staging, and lymph node metastasis (LNM) showed notably different lncRNA CCAT2 expression (P < 0.05). In addition, children with neuroblastoma in the high lncRNA CCAT2 expression group showed lower 3-year survival rate than those in the low expression group (P < 0.05). Multivariate analysis revealed that tissue differentiation, tumor-node-metastasis staging, LNM, and lncRNA CCAT2 expression were all independent risk factors affecting the prognosis of children with neuroblastoma (all P < 0.05). Compared with HUVEC cells, SH-SY5Y and SK-N-SH cells showed notably up-regulated lncRNA CCAT2, and the expression of it in SH-SY5Y was higher than that in SK-N-SH cells (P < 0.05). Compared with the CCAT2-NC group, the si-CCAT2 group presented notably down-regulated CCAT2 (P < 0.05). Moreover, according to the MTT assay, the si-CCAT2 group showed notably weakened cell viability and proliferation than the CCAT2-NC group (both P < 0.05), and SH-SY5Y cells in the former group were less active than those in the latter group in terms of migration and invasion. The cell apoptosis rate of SH-SY5Y cells in the si-CCAT2 was higher than that in the CCAT2-NC. The results suggested that knock down of lncRNA CCAT2 could improve the apoptosis activity of neuroblastoma cells in children. According to the WB assay, the si-CCAT2 group showed notably higher p53 expression and notably lower Bcl-2 protein expression than the CCAT2-NC group (both P < 0.05). LncRNA CCAT2 can inhibit the proliferation of neuroblastoma cells and promote their apoptosis, which provides a basis for the treatment of neuroblastoma.
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Affiliation(s)
- Ming Chen
- Department of Pediatrics, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, Xiangyang, 441021, Hubei, China
| | - Meng Zhao
- Department of Pediatrics, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, Xiangyang, 441021, Hubei, China
| | - Yan Hou
- Department of Pediatrics, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, Xiangyang, 441021, Hubei, China.
| | - Bin Zhu
- Department of Pediatrics, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, Xiangyang, 441021, Hubei, China
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12
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He P, Xiong G, Guo W, Jiang G, Li Y, Li H. Long non-coding RNA CCAT2 promotes prostate cancer cell proliferation and invasion by regulating the Wnt/β-catenin signaling pathway. Oncol Lett 2020; 20:97. [PMID: 32831916 PMCID: PMC7439128 DOI: 10.3892/ol.2020.11958] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2019] [Accepted: 07/14/2020] [Indexed: 02/07/2023] Open
Abstract
Long non-coding RNA colon cancer associated transcript 2 (CCAT2) is dysregulated in a number of different types of human cancer, and affects cancer progression via the Wnt/β-catenin signaling pathway. However, the roles of CCAT2 and the Wnt/β-catenin signaling pathway in prostate cancer (PCa) are not completely understood. The present study aimed to investigate the potential mechanism of CCAT2 in PCa. In the present study, the reverse transcription-quantitative PCR (RT-qPCR) results indicated that CCAT2 expression was significantly upregulated in PCa tissues, and DU145 and PC3 cell lines compared with normal prostate tissues and the epithelial RWPE-1 cell line, respectively. Functional assays indicated that CCAT2 downregulation inhibited DU145 and PC3 cell proliferation, cell cycle, migration and invasion. In addition, the luciferase reporter assay, RT-qPCR and western blotting results indicated that CCAT2 regulated transcription factor 7 like 2 (TCF7L2) expression by binding to microRNA-217. Further western blotting and TOPFlash assays indicated that CCAT2-knockdown inhibited the Wnt/β-catenin signaling pathway in DU145 and PC3 cell lines by inhibiting the expression of TCF7L2. However, CCAT2-knockdown-mediated effects were reversed by the Wnt/β-catenin signaling pathway activator lithium chloride (LiCl). Further cell experiments suggested that LiCl treatment reversed CCAT2-knockdown-mediated inhibition of PCa cell proliferation, cell cycle, epithelial-mesenchymal transition, migration and invasion. Overall, the results indicated that CCAT2 regulated PCa via the Wnt/β-catenin signaling pathway; therefore, CCAT2 may exhibit key role during the progression of PCa and may serve as a therapeutic target for the disease.
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Affiliation(s)
- Peng He
- Department of Urology, The Fifth Hospital of Wuhan, Wuhan, Hubei 430050, P.R. China
| | - Guoguang Xiong
- Department of Urology, The Fifth Hospital of Wuhan, Wuhan, Hubei 430050, P.R. China
| | - Wei Guo
- Department of Urology, The Fifth Hospital of Wuhan, Wuhan, Hubei 430050, P.R. China
| | - Guanjun Jiang
- Department of Urology, The Fifth Hospital of Wuhan, Wuhan, Hubei 430050, P.R. China
| | - Yun Li
- Department of Urology, The Fifth Hospital of Wuhan, Wuhan, Hubei 430050, P.R. China
| | - Hao Li
- Department of Urology, The Fifth Hospital of Wuhan, Wuhan, Hubei 430050, P.R. China
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13
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Zhao C, Zhang J, Ma L, Wu H, Zhang H, Su J, Geng B, Yao Q, Zheng J. GOLPH3 Promotes Angiogenesis of Lung Adenocarcinoma by Regulating the Wnt/β-Catenin Signaling Pathway. Onco Targets Ther 2020; 13:6265-6277. [PMID: 32636646 PMCID: PMC7335312 DOI: 10.2147/ott.s249994] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Accepted: 05/16/2020] [Indexed: 02/02/2023] Open
Abstract
Purpose We aim to investigate the role of Golgi phosphoprotein 3 (GOLPH3) and the possible regulation mechanism underlying lung adenocarcinoma (LADC). Methods The level of GOLPH3 was performed by quantitative real time (qRT)-PCR, Western blot and immunohistochemistry. Patient survival rate was analyzed by Kaplan–Meier method. MTT was used to detect cell viability. The levels of p-serine/threonine-protein kinase (Akt), Akt, p-p65, p65 and β-catenin were determined by Western blot. Cell apoptosis was tested using flow cytometry. Angiogenesis was determined by in vitro angiogenesis assay. qPCR and Western blot were performed to identify apoptotic protein B-cell lymphoma 2 (Bcl-2)/Bcl-2-associated X protein (Bax) and vascular endothelial growth factor (VEGF). Results GOLPH3 was highly expressed in LADC cell lines and tissues and was significantly correlated with poor overall survival among patients with LADC. Furthermore, GOLPH3 expression was reduced in A549 and H23 cells in a cisplatin-dependent manner. Silencing of GOLPH3 enhanced inhibition of A549 and H23 cells by cisplatin and suppressed the protein expression of p-Akt, while p-p65 expression remained stable. However, overexpression of GOLPH3 weakened the inhibition of A549 and H23 cells by cisplatin and improved the protein expression of p-Akt, while p-p65 expression remained stable. XAV939, an inhibitor of Wnt/β-catenin signaling pathway, decreased GOLPH3 overexpression-induced proliferation and enhanced cisplatin-induced angiogenesis inhibition and apoptosis, which was supported by the changes of VEGF, Bax and Bcl-2. Conclusion GOLPH3 promotes proliferation capacity in LADC through activating the Wnt/β-catenin signaling pathway.
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Affiliation(s)
- Canjun Zhao
- Department of Traditional Chinese Medicine, The Second Hospital Affiliated to Air Force Medical University, Xi'an, People's Republic of China
| | - Jin Zhang
- First Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, People's Republic of China
| | - Litian Ma
- Department of Traditional Chinese Medicine, The Second Hospital Affiliated to Air Force Medical University, Xi'an, People's Republic of China
| | - Hao Wu
- Department of Traditional Chinese Medicine, The Second Hospital Affiliated to Air Force Medical University, Xi'an, People's Republic of China
| | - Hui Zhang
- Department of Traditional Chinese Medicine, The Second Hospital Affiliated to Air Force Medical University, Xi'an, People's Republic of China
| | - Jialin Su
- Department of Traditional Chinese Medicine, The Second Hospital Affiliated to Air Force Medical University, Xi'an, People's Republic of China
| | - Bizu Geng
- Department of Traditional Chinese Medicine, The Second Hospital Affiliated to Air Force Medical University, Xi'an, People's Republic of China
| | - Qinghua Yao
- Department of Integrated Traditional Chinese and Western Medicine, Zhejiang Cancer Hospital, Hangzhou, People's Republic of China
| | - Jin Zheng
- Department of Traditional Chinese Medicine, The Second Hospital Affiliated to Air Force Medical University, Xi'an, People's Republic of China
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14
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Long non-coding RNA CCAT2 as a potential serum biomarker for diagnosis and prognosis of multiple myeloma. Ann Hematol 2020; 99:2159-2171. [DOI: 10.1007/s00277-020-04161-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2019] [Accepted: 06/18/2020] [Indexed: 12/21/2022]
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15
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Huang W, Dong S, Cha Y, Yuan X. SNHG11 promotes cell proliferation in colorectal cancer by forming a positive regulatory loop with c-Myc. Biochem Biophys Res Commun 2020; 527:985-992. [PMID: 32439170 DOI: 10.1016/j.bbrc.2020.05.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Accepted: 05/01/2020] [Indexed: 12/24/2022]
Abstract
Dysregulation of long non-coding RNAs (lncRNA) have long been linked to the onset and development of colorectal cancer (CRC), yet the underlying mechanisms remain elusive. Small nucleolar RNA host gene 11 (SNHG11) is a novel lncRNA with few information about its role in development and progression of CRC. Here, we found SNHG11, a highly conserved lncRNA, was commonly overexpressed in various cancer including CRC. High expression of SNHG11 correlated with poor prognosis in patients with CRC. Gain of function and loss-of function experiments showed that SNHG11 visibly promoted proliferation in CRC cells. Mechanistic assays revealed that SNHG11 interacted with Insulin-like growth factor 2 (IGF2) mRNA-binding protein 1 (IGF2BP1), thereby enhancing the interaction between IGF2BP1 and c-Myc mRNA, a well-known target of IGF2BP1. Consequently, c-Myc mRNA expression was stabilized and its downstream targets were significantly upregulated. Further investigation demonstrated that SNHG11 upregulated c-Myc which in turn transcriptionally upregulated SNHG11. Taken together, our findings suggested that reciprocal regulation of SNHG11 and c-Myc promotes cell proliferation in CRC.
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Affiliation(s)
- Weizhen Huang
- Department of Medical Oncology, Huizhou Municipal Central Hospital of Guangdong Province, 41 North Eling Road, Huizhou, Guangdong Province, 516000, PR China
| | - Shaoting Dong
- Department of Medical Oncology, Huizhou Municipal Central Hospital of Guangdong Province, 41 North Eling Road, Huizhou, Guangdong Province, 516000, PR China
| | - Yinlian Cha
- Department of Medical Oncology, Huizhou Municipal Central Hospital of Guangdong Province, 41 North Eling Road, Huizhou, Guangdong Province, 516000, PR China
| | - Xia Yuan
- Department of Medical Oncology, Huizhou Municipal Central Hospital of Guangdong Province, 41 North Eling Road, Huizhou, Guangdong Province, 516000, PR China.
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16
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Li J, Xue Y, Amin MT, Yang Y, Yang J, Zhang W, Yang W, Niu X, Zhang HY, Gong J. ncRNA-eQTL: a database to systematically evaluate the effects of SNPs on non-coding RNA expression across cancer types. Nucleic Acids Res 2020; 48:D956-D963. [PMID: 31410488 PMCID: PMC6943077 DOI: 10.1093/nar/gkz711] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 07/26/2019] [Accepted: 08/02/2019] [Indexed: 12/20/2022] Open
Abstract
Numerous studies indicate that non-coding RNAs (ncRNAs) have critical functions across biological processes, and single-nucleotide polymorphisms (SNPs) could contribute to diseases or traits through influencing ncRNA expression. However, the associations between SNPs and ncRNA expression are largely unknown. Therefore, genome-wide expression quantitative trait loci (eQTL) analysis to assess the effects of SNPs on ncRNA expression, especially in multiple cancer types, will help to understand how risk alleles contribute toward tumorigenesis and cancer development. Using genotype data and expression profiles of ncRNAs of >8700 samples from The Cancer Genome Atlas (TCGA), we developed a computational pipeline to systematically identify ncRNA-related eQTLs (ncRNA-eQTLs) across 33 cancer types. We identified a total of 6 133 278 and 721 122 eQTL-ncRNA pairs in cis-eQTL and trans-eQTL analyses, respectively. Further survival analyses identified 8312 eQTLs associated with patient survival times. Furthermore, we linked ncRNA-eQTLs to genome-wide association study (GWAS) data and found 262 332 ncRNA-eQTLs overlapping with known disease- and trait-associated loci. Finally, a user-friendly database, ncRNA-eQTL (http://ibi.hzau.edu.cn/ncRNA-eQTL), was developed for free searching, browsing and downloading of all ncRNA-eQTLs. We anticipate that such an integrative and comprehensive resource will improve our understanding of the mechanistic basis of human complex phenotypic variation, especially for ncRNA- and cancer-related studies.
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Affiliation(s)
- Jiang Li
- Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University, Wuhan 430070, P.R. China
| | - Yawen Xue
- Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University, Wuhan 430070, P.R. China
| | - Muhammad Talal Amin
- National Institute of Genomics and Advanced Biotechnology, National Agriculture Research Center, Islamabad 44051, Pakistan
| | - Yanbo Yang
- Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University, Wuhan 430070, P.R. China
| | - Jiajun Yang
- Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University, Wuhan 430070, P.R. China
| | - Wen Zhang
- Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University, Wuhan 430070, P.R. China
| | - Wenqian Yang
- Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University, Wuhan 430070, P.R. China
| | - Xiaohui Niu
- Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University, Wuhan 430070, P.R. China
| | - Hong-Yu Zhang
- Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University, Wuhan 430070, P.R. China
| | - Jing Gong
- Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University, Wuhan 430070, P.R. China.,College of Biomedicine and Health, Huazhong Agricultural University, Wuhan 430070, P.R. China
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17
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Fu Y, Zhang Y, Cui J, Yang G, Peng S, Mi W, Yin X, Yu Y, Jiang J, Liu Q, Qin Y, Xu W. SNP rs12982687 affects binding capacity of lncRNA UCA1 with miR-873-5p: involvement in smoking-triggered colorectal cancer progression. Cell Commun Signal 2020; 18:37. [PMID: 32143722 PMCID: PMC7059387 DOI: 10.1186/s12964-020-0518-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Accepted: 01/29/2020] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND This investigation was arranged to elucidate whether single nucleotide polymorphisms (SNPs) of lncRNA UCA1 was implicated in elevating colorectal cancer (CRC) risk by interacting with environmental exposures. METHODS LncRNASNP database was firstly adopted to predict SNPs that possibly affected binding of UCA1 with miRNAs and then the interactive effect of SNPs and environmental exposure on CRC risk was evaluated by recurring to type 2 gene-environment interactions (GEI) model. Besides, MTT assay, colony formation assay, transwell assay and wound healing assay were performed to assess the activity of CRC cell lines which carried distinct genotypes of specific SNPs. The impact of nicotine on activity of CRC cells was also appraised. RESULTS SNP rs12982687 of UCA1 intervened in the binding capacity of UCA1 with several miRNAs, especially miR-873-5p. MiRNAs regulated by UCA1, as predicted by mirPath software, shared genes that were enriched in HIF1 signaling pathway. Moreover, homozygote TT of rs12982687 reduced CRC risk among smokers, and CRC cells that carried rs12982687 (CC) displayed strong migration and invasion. By contrast, miR-873-5p mimic, which reduced UCA1 expression, delayed metastasis of CRC cells (all P < 0.05). Additionally, nicotine not merely elevated UCA1 and HIF-1α expressions in CRC cells, but also facilitated proliferation and metastasis of CRC cells (P < 0.05). CONCLUSIONS SNP rs12982687 was involved in smoking-triggered CRC progression, given its influence on UCA1's binding with miR-873-5p and HIF-1 signaling.
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Affiliation(s)
- Yang Fu
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Zhengzhou University, No. 1 Jianshe East Road, Zhengzhou City, 450052, Henan Province, China.
| | - Yizheng Zhang
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Zhengzhou University, No. 1 Jianshe East Road, Zhengzhou City, 450052, Henan Province, China
| | - Jinyuan Cui
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Zhengzhou University, No. 1 Jianshe East Road, Zhengzhou City, 450052, Henan Province, China
| | - Ge Yang
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Sanfei Peng
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Zhengzhou University, No. 1 Jianshe East Road, Zhengzhou City, 450052, Henan Province, China
| | - Wunan Mi
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Zhengzhou University, No. 1 Jianshe East Road, Zhengzhou City, 450052, Henan Province, China
| | - Xiangya Yin
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Zhengzhou University, No. 1 Jianshe East Road, Zhengzhou City, 450052, Henan Province, China
| | - Yang Yu
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Zhengzhou University, No. 1 Jianshe East Road, Zhengzhou City, 450052, Henan Province, China
| | - Jianwu Jiang
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Zhengzhou University, No. 1 Jianshe East Road, Zhengzhou City, 450052, Henan Province, China
| | - Qi Liu
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Zhengzhou University, No. 1 Jianshe East Road, Zhengzhou City, 450052, Henan Province, China
| | - Yiyu Qin
- Research Centre of Biomedical Technology, Jiangsu Vocational College of Medicine, No. 283 Jianfang South Road, Yancheng City, Jiangsu Province, 224000, China.
| | - Wen Xu
- State Key Laboratory of Bioreactor Engineering & Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, No. 130 Meilong Road, Shanghai, 200237, China.
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18
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Tornesello ML, Faraonio R, Buonaguro L, Annunziata C, Starita N, Cerasuolo A, Pezzuto F, Tornesello AL, Buonaguro FM. The Role of microRNAs, Long Non-coding RNAs, and Circular RNAs in Cervical Cancer. Front Oncol 2020; 10:150. [PMID: 32154165 PMCID: PMC7044410 DOI: 10.3389/fonc.2020.00150] [Citation(s) in RCA: 137] [Impact Index Per Article: 34.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Accepted: 01/28/2020] [Indexed: 12/24/2022] Open
Abstract
Prolonged infection of uterine cervix epithelium with human papillomavirus (HPV) and constitutive expression of viral oncogenes have been recognized as the main cause of the complex molecular changes leading to transformation of cervical epithelial cells. Deregulated expression of microRNAs (miRNA), long non-coding RNAs (lncRNA), and circular RNAs (circRNA) is involved in the initiation and promotion processes of cervical cancer development. Expression profiling of small RNAs in cervical neoplasia revealed up-regulated “oncogenic” miRNAs, such as miR-10a, miR-21, miR-19, and miR-146a, and down regulated “tumor suppressive” miRNAs, including miR-29a, miR-372, miR-214, and miR-218, associated with cell growth, malignant transformation, cell migration, and invasion. Also several lncRNAs, comprising among others HOTAIR, MALAT1, GAS5, and MEG3, have shown to be associated with various pathogenic processes such as tumor progression, invasion as well as therapeutic resistance and emerged as new diagnostic and prognostic biomarkers in cervical cancer. Moreover, human genes encoded circular RNAs, such as has_circ-0018289, have shown to sponge specific miRNAs and to concur to the deregulation of target genes. Viral encoded circE7 has also demonstrated to overexpress E7 oncoprotein thus contributing to cell transformation. In this review, we summarize current literature on the complex interplay between miRNAs, lncRNAs, and circRNAs and their role in cervical neoplasia.
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Affiliation(s)
- Maria Lina Tornesello
- Molecular Biology and Viral Oncology Unit, Istituto Nazionale Tumori IRCCS "Fondazione G. Pascale", Naples, Italy
| | - Raffaella Faraonio
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, Naples, Italy
| | - Luigi Buonaguro
- Cancer Immunoregulation Unit, Istituto Nazionale Tumori IRCCS "Fondazione G. Pascale", Naples, Italy
| | - Clorinda Annunziata
- Molecular Biology and Viral Oncology Unit, Istituto Nazionale Tumori IRCCS "Fondazione G. Pascale", Naples, Italy
| | - Noemy Starita
- Molecular Biology and Viral Oncology Unit, Istituto Nazionale Tumori IRCCS "Fondazione G. Pascale", Naples, Italy
| | - Andrea Cerasuolo
- Molecular Biology and Viral Oncology Unit, Istituto Nazionale Tumori IRCCS "Fondazione G. Pascale", Naples, Italy
| | - Francesca Pezzuto
- Molecular Biology and Viral Oncology Unit, Istituto Nazionale Tumori IRCCS "Fondazione G. Pascale", Naples, Italy
| | - Anna Lucia Tornesello
- Molecular Biology and Viral Oncology Unit, Istituto Nazionale Tumori IRCCS "Fondazione G. Pascale", Naples, Italy
| | - Franco Maria Buonaguro
- Molecular Biology and Viral Oncology Unit, Istituto Nazionale Tumori IRCCS "Fondazione G. Pascale", Naples, Italy
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19
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Niu C, Wang L, Ye W, Guo S, Bao X, Wang Y, Xia Z, Chen R, Liu C, Lin X, Huang X. CCAT2 contributes to hepatocellular carcinoma progression via inhibiting miR-145 maturation to induce MDM2 expression. J Cell Physiol 2020; 235:6307-6320. [PMID: 32037568 DOI: 10.1002/jcp.29630] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Accepted: 01/30/2020] [Indexed: 12/19/2022]
Abstract
Long noncoding RNA colon cancer-associated transcript 2 (CCAT2) has been recently found to function as an oncogene in hepatocellular carcinoma (HCC). However, the mechanisms of CCAT2 in HCC development remain to be further explored. In the present study, we found that CCAT2 was abnormally upregulated in HCC cells and tissue specimens, exhibiting an inverse correlation with microRNA (miR)-145 expression. Mechanistic investigation showed that CCAT2 selectively blocked miR-145 processing, leading to decreased mature miR-145 presence. Both the in vitro and in vivo effects of CCAT2 knockdown on the proliferation and metastasis of HCC cells were reversed by miR-145 inhibitor, indicating that miR-145 modulation accounts for CCAT2-meditated HCC progression. Furthermore, miR-145 mimic dramatically suppressed HCC cells' proliferation and metastasis, revealing a tumor suppressor role of miR-145 in HCC. Mechanistically, MDM2 was predicted to be a potential target of miR-145. The luciferase and western blot assay demonstrated that miR-145 mimic largely inhibited MDM2 3'-untranslated region luciferase activity and MDM2 expression, followed by the upregulation of p53/p21 expression. Finally, the coexpression of MDM2 in miR-145 mimic-transfected HCC cells was able to largely compromise the inhibitory effects of miR-145 mimic on HCC cells' proliferation and metastasis in vitro and tumor formation in a xenograft model, confirming MDM2 is the critical mediator of miR-145 in HCC. In summary, our findings indicated that CCAT2 selectively blocks the miR-145 maturation process and plays an oncogene in HCC. Furthermore, a novel CCAT2/miR-145/MDM2 axis was revealed in HCC development and might provide a new target in the molecular treatment of HCC.
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Affiliation(s)
- Chao Niu
- Pediatric Research Institute, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Linlin Wang
- Pediatric Research Institute, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Weijian Ye
- Department of Pharmacy, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Shikun Guo
- Department of Pediatric Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Xiaozhou Bao
- Department of Pediatric Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Yongbiao Wang
- Department of Pediatric Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Zhaobo Xia
- Department of Pediatric Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Randong Chen
- Department of Pediatric Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Chong Liu
- Department of Cardiology, The Central Hospital of Lishui City, Lishui, China
| | - Xiaokun Lin
- Department of Pediatric Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Xiaozhong Huang
- Pediatric Research Institute, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.,Department of Pediatric Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
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20
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Galamb O, Barták BK, Kalmár A, Nagy ZB, Szigeti KA, Tulassay Z, Igaz P, Molnár B. Diagnostic and prognostic potential of tissue and circulating long non-coding RNAs in colorectal tumors. World J Gastroenterol 2019; 25:5026-5048. [PMID: 31558855 PMCID: PMC6747286 DOI: 10.3748/wjg.v25.i34.5026] [Citation(s) in RCA: 73] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 07/26/2019] [Accepted: 08/07/2019] [Indexed: 02/06/2023] Open
Abstract
Long non-coding RNAs (lncRNAs) are members of the non-protein coding RNA family longer than 200 nucleotides. They participate in the regulation of gene and protein expression influencing apoptosis, cell proliferation and immune responses, thereby playing a critical role in the development and progression of various cancers, including colorectal cancer (CRC). As CRC is one of the most frequently diagnosed malignancies worldwide with high mortality, its screening and early detection are crucial, so the identification of disease-specific biomarkers is necessary. LncRNAs are promising candidates as they are involved in carcinogenesis, and certain lncRNAs (e.g., CCAT1, CRNDE, CRCAL1-4) show altered expression in adenomas, making them potential early diagnostic markers. In addition to being useful as tissue-specific markers, analysis of circulating lncRNAs (e.g., CCAT1, CCAT2, BLACAT1, CRNDE, NEAT1, UCA1) in peripheral blood offers the possibility to establish minimally invasive, liquid biopsy-based diagnostic tests. This review article aims to describe the origin, structure, and functions of lncRNAs and to discuss their contribution to CRC development. Moreover, our purpose is to summarise lncRNAs showing altered expression levels during tumor formation in both colon tissue and plasma/serum samples and to demonstrate their clinical implications as diagnostic or prognostic biomarkers for CRC.
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Affiliation(s)
- Orsolya Galamb
- Molecular Medicine Research Group, Hungarian Academy of Sciences, Budapest H-1088, Hungary
| | - Barbara K Barták
- 2nd Department of Internal Medicine, Semmelweis University, Budapest H-1088, Hungary
| | - Alexandra Kalmár
- Molecular Medicine Research Group, Hungarian Academy of Sciences, Budapest H-1088, Hungary
| | - Zsófia B Nagy
- 2nd Department of Internal Medicine, Semmelweis University, Budapest H-1088, Hungary
| | - Krisztina A Szigeti
- 2nd Department of Internal Medicine, Semmelweis University, Budapest H-1088, Hungary
| | - Zsolt Tulassay
- Molecular Medicine Research Group, Hungarian Academy of Sciences, Budapest H-1088, Hungary
| | - Peter Igaz
- Molecular Medicine Research Group, Hungarian Academy of Sciences, Budapest H-1088, Hungary
- 2nd Department of Internal Medicine, Semmelweis University, Budapest H-1088, Hungary
| | - Béla Molnár
- Molecular Medicine Research Group, Hungarian Academy of Sciences, Budapest H-1088, Hungary
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21
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Ghafouri-Fard S, Taheri M. Colon Cancer-Associated Transcripts 1 and 2: Roles and functions in human cancers. J Cell Physiol 2019; 234:14581-14600. [PMID: 30693526 DOI: 10.1002/jcp.28176] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Accepted: 01/10/2019] [Indexed: 01/24/2023]
Abstract
The long noncoding RNAs (lncRNAs) Colon Cancer-Associated Transcripts 1 and 2 (CCAT1 and CCAT2) are located in a recurrently amplified region in cancers. Their proximity with the Myc oncogene and their interactions with its promoter provided further evidence for their contribution in the tumorigenesis processes. Several cell line and clinical studies have shown upregulation of these lncRNAs in diverse malignancies. Moreover, some single nucleotide variants within these genes have been associated with cancer risk or therapeutic response in different populations. Besides, these two lncRNAs act as sponges for some tumor suppressor microRNAs (miRNAs), thus promoting cancer evolution. In the current study, we review recent literature about their expression level, interaction with cancer-related pathways, their role in determination of cell fate and their contribution in malignant phenotype characteristics. Taken together, the current literature shows that these lncRNAs are putative targets for design of novel treatment strategies. Moreover, their expression levels in biopsied samples, exosomes, and sera of patients might be applied as diagnostic biomarkers or markers for patient follow-up.
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Affiliation(s)
- Soudeh Ghafouri-Fard
- Department of Medical Genetics, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Taheri
- Student Research Committee, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Urogenital Stem Cell Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Amirkhah R, Naderi-Meshkin H, Shah JS, Dunne PD, Schmitz U. The Intricate Interplay between Epigenetic Events, Alternative Splicing and Noncoding RNA Deregulation in Colorectal Cancer. Cells 2019; 8:cells8080929. [PMID: 31430887 PMCID: PMC6721676 DOI: 10.3390/cells8080929] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 08/16/2019] [Accepted: 08/16/2019] [Indexed: 12/17/2022] Open
Abstract
Colorectal cancer (CRC) results from a transformation of colonic epithelial cells into adenocarcinoma cells due to genetic and epigenetic instabilities, alongside remodelling of the surrounding stromal tumour microenvironment. Epithelial-specific epigenetic variations escorting this process include chromatin remodelling, histone modifications and aberrant DNA methylation, which influence gene expression, alternative splicing and function of non-coding RNA. In this review, we first highlight epigenetic modulators, modifiers and mediators in CRC, then we elaborate on causes and consequences of epigenetic alterations in CRC pathogenesis alongside an appraisal of the complex feedback mechanisms realized through alternative splicing and non-coding RNA regulation. An emphasis in our review is put on how this intricate network of epigenetic and post-transcriptional gene regulation evolves during the initiation, progression and metastasis formation in CRC.
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Affiliation(s)
- Raheleh Amirkhah
- Centre for Cancer Research and Cell Biology, Queen's University Belfast, Belfast BT9 7AE, UK
- Nastaran Center for Cancer Prevention (NCCP), Mashhad 9185765476, Iran
| | - Hojjat Naderi-Meshkin
- Nastaran Center for Cancer Prevention (NCCP), Mashhad 9185765476, Iran
- Stem Cells and Regenerative Medicine Research Group, Academic Center for Education, Culture Research (ACECR), Khorasan Razavi Branch, Mashhad 9177949367, Iran
| | - Jaynish S Shah
- Gene & Stem Cell Therapy Program Centenary Institute, The University of Sydney, Camperdown, NSW 2050, Australia
- Sydney Medical School, The University of Sydney, Camperdown, NSW 2050, Australia
| | - Philip D Dunne
- Centre for Cancer Research and Cell Biology, Queen's University Belfast, Belfast BT9 7AE, UK
| | - Ulf Schmitz
- Gene & Stem Cell Therapy Program Centenary Institute, The University of Sydney, Camperdown, NSW 2050, Australia.
- Sydney Medical School, The University of Sydney, Camperdown, NSW 2050, Australia.
- Computational BioMedicine Laboratory Centenary Institute, The University of Sydney, Camperdown, NSW 2050, Australia.
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23
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Wang X, Wang X. Long non-coding RNA colon cancer-associated transcript 2 may promote esophageal cancer growth and metastasis by regulating the Wnt signaling pathway. Oncol Lett 2019; 18:1745-1754. [PMID: 31423241 PMCID: PMC6607085 DOI: 10.3892/ol.2019.10488] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Accepted: 05/22/2019] [Indexed: 02/06/2023] Open
Abstract
The aim of this study was to investigate how long non-coding (lnc)RNA colon cancer-associated transcript 2 (CCAT2) regulates the proliferation, invasion and metastasis of esophageal cancer cells via the Wnt signaling pathway. The expression of lncRNA CCAT2 was quantified by reverse transcription-quantitative PCR in four esophageal cancer cell lines (Eca-109, EC9706, KYSE150 and TE-1) and normal human esophageal epithelial cells (HEECs). The effect of silencing CCAT2 (si-CCAT2) and inhibiting Wnt signaling (using the inhibitor FH535) on the proliferation, migration and invasion of Eca-109 cells was measured by MTT, wound-healing and Transwell invasion assays. Flow cytometry was used to evaluate apoptosis in si-CCAT2 Eca-109 cells. The expression of β-catenin and proliferating cell nuclear antigen (PCNA) proteins was detected by immunohistochemistry. The pro-apoptotic protein Bax, cyclin D1 and Wnt target proteins, including c-Myc and adenomatous polyposis coli (APC), were detected by western blotting. LncRNA CCAT2 was highly expressed in the four esophageal cancer cell lines compared with the HEEC cells. The expression of CCAT2 was significantly decreased in si-CCAT2 Eca-109 cells. Treatment with si-CCAT2 and FH535 alone or in combination significantly inhibited the proliferation, migration and invasion of Eca-109 cells. The treatments also promoted apoptosis, upregulated the expression of Bax and APC proteins, and downregulated β-catenin, PCNA, cyclin D1 and c-Myc proteins. In summary, lncRNA CCAT2 is upregulated in esophageal cancer cells and the knockdown of lncRNA CCAT2 inhibits their proliferation, migration and invasion via the Wnt signaling pathway.
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Affiliation(s)
- Xiuchun Wang
- Department of Vascular Intervention, Affiliated Hospital of Weifang Medical University, Weifang, Shandong 261031, P.R. China
| | - Xuemei Wang
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
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24
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Circulating Noncoding RNAs Have a Promising Future Acting as Novel Biomarkers for Colorectal Cancer. DISEASE MARKERS 2019; 2019:2587109. [PMID: 31275444 PMCID: PMC6589288 DOI: 10.1155/2019/2587109] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/31/2018] [Revised: 04/23/2019] [Accepted: 05/21/2019] [Indexed: 02/08/2023]
Abstract
Colorectal cancer (CRC) is one of the most common malignant tumors worldwide, causing a large number of cancer-related deaths each year. Patients are usually diagnosed at advanced and incurable stages due to the lack of suitable screening methods for early detection. Noncoding RNAs (ncRNAs), including small and long noncoding RNAs (lncRNA), are known to have significant regulatory functions, and accumulating evidence suggests that circulating ncRNAs have potential applications as noninvasive biomarkers for diagnosing CRC, evaluating its prognosis, or predicting chemosensitivity in the general population. In this review, we summarize the origins of circulating ncRNAs and provide details of single and multiple circulating ncRNAs that might have roles as diagnostic and prognostic biomarkers in CRC. We end by discussing circulating ncRNAs that may distinguish patients with resistance to chemotherapy.
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25
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Che D, Huang W, Fang Z, Li L, Wu H, Pi L, Zhou H, Xu Y, Fu L, Tan Y, Lu Z, Li Q, Gu X. The lncRNA CCAT2 rs6983267 G allele is associated with decreased susceptibility to recurrent miscarriage. J Cell Physiol 2019; 234:20577-20583. [PMID: 30982978 DOI: 10.1002/jcp.28661] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 01/25/2019] [Accepted: 01/28/2019] [Indexed: 12/13/2022]
Abstract
Genetics might play various roles in susceptibility to recurrent miscarriage, and previous studies suggest that some gene polymorphisms might be associated with abortion and breast cancer onset. Colon cancer-associated transcript 2 (CCAT2) is a novel long noncoding RNA (lncRNA) transcript that might be correlated with susceptibility to multiple cancers, including breast cancer. However, whether lncRNA CCAT2 polymorphisms are related to susceptibility to recurrent miscarriage is unclear. We genotyped two lncRNA CCAT2 polymorphisms (rs6983267 and rs3843549) in 248 patients with recurrent miscarriage and 392 controls through a TaqMan real-time polymerase chain reaction assay, and the strength of each association was evaluated via 95% confidence intervals (CIs) and odds ratios (ORs). Our results showed that the rs6983267 G allele in lncRNA CCAT2 was associated with decreased susceptibility to recurrent miscarriage (TG vs. TT: adjusted OR = 0.603; 95% CI = 0.420-0.866; p = 0.0062; GG/TG vs. TT: adjusted OR = 0.620; 95% CI = 0.441-0.873; p = 0.0061). The combined analysis of the two protective polymorphisms (rs3843549 AA and rs6983267 TG/GG) revealed that individuals with two unfavorable alleles exhibited a lower risk of recurrent miscarriage than those with no or only one unfavorable allele (adjusted OR = 0.531; 95% CI = 0.382-0.739). Moreover, the decreased risk associated with the two protective alleles was most obvious in women aged less than 35 years (OR = 0.551; 95% CI = 0.378-0.8803; p = 0.0019) and in women with two to three miscarriages (adjusted OR = 0.466; 95% CI = 0.318-0.683; p < 0.0001). In conclusion, our study indicates that the rs6983267G allele might contribute to a decreased risk of recurrent miscarriage in the South Chinese population.
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Affiliation(s)
- Di Che
- Department of Clinical Biological Resource Bank, Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Wendong Huang
- Department of Pharmacy, Maoming People's Hospital, Maoming, China
| | - Zhenzhen Fang
- Program of Molecular Medicine, Guangzhou Women and Children's Hospital, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, China
| | - Li Li
- Department of Gynecology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Haiying Wu
- Department of Gynecology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Lei Pi
- Department of Clinical Biological Resource Bank, Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Huazhong Zhou
- Department of Clinical Biological Resource Bank, Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Yufen Xu
- Department of Clinical Biological Resource Bank, Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - LanYan Fu
- Department of Clinical Biological Resource Bank, Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Yaqian Tan
- Department of Clinical Biological Resource Bank, Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Zhaoliang Lu
- Department of Clinical Biological Resource Bank, Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Qingfeng Li
- Department of Gynecology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Xiaoqiong Gu
- Department of Clinical Biological Resource Bank, Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China.,Department of Blood Transfusion, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China.,Department of Clinical Laboratory, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
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26
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Wang L, Duan W, Yan S, Xie Y, Wang C. Circulating long non-coding RNA colon cancer-associated transcript 2 protected by exosome as a potential biomarker for colorectal cancer. Biomed Pharmacother 2019; 113:108758. [PMID: 30877883 DOI: 10.1016/j.biopha.2019.108758] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 03/01/2019] [Accepted: 03/04/2019] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Colon cancer-associated transcript 2 (CCAT2) plays a crucial role in several cancers. However, the clinical significance of circulating CCAT2 expression in colorectal cancer (CRC) has not previously been elucidated. In this study, we aimed to elucidate the potential role of CCAT2 and its clinical significance of circulating expression level in CRC. METHODS We detected the expression of CCAT2 in 75 pairs of tumorous and adjacent non-tumorous tissues derived from CRC patients by quantitative real-time polymerase chain reaction. The serum levels of CCAT2 expression were detected in an independent cohort of healthy controls and CRC patients. We analyzed the relationship between CCAT2 levels in serum and clinicopathological features of CRC patients. We also compared CCAT2 levels in paired pre-operative and post-operative serum samples. Furthermore, the existence of serum CCAT2 in exosomes was investigated. RESULTS The levels of CCAT2 expression were significantly over-expressed in tumor tissues (p < 0.05) compared to adjacent non-tumorous tissues. Higher CCAT2 expression was associated with advanced CRC patients. Moreover, the serum levels of CCAT2 expression were significantly over-expressed in CRC patients (p < 0.05) compared to those in healthy subjects. In addition, the CCAT2 levels were significantly decreased in post-operative samples than those in pre-operative ones (P = 0.01). We also found that CCAT2 expression was up-regulated in CRC exosomes (P < 0.001) and no significant differences of CCAT2 levels were found between in serum and in exosomes. CONCLUSIONS Our data indicate that circulating CCAT2 which might protected by exosomes can serve as a novel potential predictor in CRC.
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Affiliation(s)
- Lili Wang
- Department of Clinical Laboratory, Qilu Hospital of Shandong University, Jinan, Shandong, 250012, China
| | - Weili Duan
- Department of Clinical Laboratory, The second Hospital of Shandong University, Jinan, Shandong, 250033, China
| | - Suzhen Yan
- Department of Clinical Laboratory, The second Hospital of Shandong University, Jinan, Shandong, 250033, China
| | - Yujiao Xie
- Department of Clinical Laboratory, The second Hospital of Shandong University, Jinan, Shandong, 250033, China
| | - Chuanxin Wang
- Department of Clinical Laboratory, The second Hospital of Shandong University, Jinan, Shandong, 250033, China.
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27
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Variant of SNP rs1317082 at CCSlnc362 (RP11-362K14.5) creates a binding site for miR-4658 and diminishes the susceptibility to CRC. Cell Death Dis 2018; 9:1177. [PMID: 30518759 PMCID: PMC6281592 DOI: 10.1038/s41419-018-1222-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 11/05/2018] [Accepted: 11/12/2018] [Indexed: 12/12/2022]
Abstract
Genome-wide association studies (GWAS) have identified several loci harboring variants that affected the risk of colorectal cancer; however, the specific mechanisms by which germline variation influenced the tumorigenesis of colorectal cancer (CRC) remains unrevealed. We found the T>C variant of rs1317082, locating at the exon 1 of lncRNA RP11-362K14.5 (CCSlnc362), was predicted to be a protective locus for cancer. However, the specific role of CCSlnc362 and the interaction between CCSlnc362 and rs1317082 variation in colorectal cancer and its mechanisms remain unclear. Here we explored the expression and function of CCSlnc362 in CRC cells and tissues. We found lncRNA CCSlnc362 expression was significantly increased in CRC samples. Follow-up functional experiments elucidated that downregulation of CCSlnc362 inhibited cell proliferation, arrested cell cycle, and promoted apoptosis in CRC cells. The T>C variant of rs1317082 at CCSlnc362 exon 1 created a binding site for miR-4658 to reduce the expression of CCSlnc362 and thus decreased the susceptibility to CRC. Our findings have provided supporting evidence for the protective role of rs1317082 variation and the potential oncogenic role of lncRNA CCSlnc362 in CRC. The data shed new light on the relationship between germline variation, miRNAs, and lncRNAs and opened a new avenue for targeted therapy in CRC.
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28
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Wen J, Xu Q, Yuan Y. Single nucleotide polymorphisms and sporadic colorectal cancer susceptibility: a field synopsis and meta-analysis. Cancer Cell Int 2018; 18:155. [PMID: 30337837 PMCID: PMC6180373 DOI: 10.1186/s12935-018-0656-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Accepted: 10/05/2018] [Indexed: 01/05/2023] Open
Abstract
Background Although mounting non-hereditary colorectal cancer (NHCRC) associated single nucleotide polymorphisms (SNPs) have been observed, no field synopsis and meta-analysis has been conducted through systematically assessing cumulative evidence, during the past 5 years. Methods We retrieved the database via the PubMed, Web of Science and Embase gateways to identify publications concerning the associations between SNPs and risk of NHCRC, up to May 1st, 2017. To assess the finding credibility, cumulative evidence was graded based on the Venice criteria. Meta-analysis was also performed for three subgroups including ethnicity (Asian vs Caucasian), primary cancer site (colon vs rectum) and TNM stage (I II vs III IV). Then, we arranged those high quality SNPs into different regions according to their locations on genes to evaluate their functional roles on CRC development. Results 5114 publications were collected and 1001 of them met our inclusion criteria, which totally included 1788 SNPs in 793 genes or distinct chromosomal loci. Totally, we performed 359 primary and subgroup meta-analyses for 160 SNPs in 96 distinct genes. By utilizing the Venice criteria, we identified 15 high quality SNPs with 25 high credibility significant associations. Furthermore, we artificially divided the high quality SNPs into different groups, based on their SNP loci (exon region, intron region, promoter region, downstream region, non-coding region and intergenic region). Conclusion We have identified 15 high quality SNPs which may act as promising genetic biomarkers for clinical NHCRC susceptibility screening and explored their functional roles on the NHCRC development based on their locations on genes.
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Affiliation(s)
- Jing Wen
- 1Tumor Etiology and Screening Department of Cancer Institute and General Surgery, The First Hospital of China Medical University, No.155 NanjingBei Street, Heping District, Shenyang, 110001 Liaoning China.,2Key Laboratory of Cancer Etiology and Prevention in Liaoning Education Department, The First Hospital of China Medical University, Shenyang, 110001 China.,3Key Laboratory of GI Cancer Etiology and Prevention in Liaoning Province, The First Hospital of China Medical University, Shenyang, 110001 China
| | - Qian Xu
- 1Tumor Etiology and Screening Department of Cancer Institute and General Surgery, The First Hospital of China Medical University, No.155 NanjingBei Street, Heping District, Shenyang, 110001 Liaoning China.,2Key Laboratory of Cancer Etiology and Prevention in Liaoning Education Department, The First Hospital of China Medical University, Shenyang, 110001 China.,3Key Laboratory of GI Cancer Etiology and Prevention in Liaoning Province, The First Hospital of China Medical University, Shenyang, 110001 China
| | - Yuan Yuan
- 1Tumor Etiology and Screening Department of Cancer Institute and General Surgery, The First Hospital of China Medical University, No.155 NanjingBei Street, Heping District, Shenyang, 110001 Liaoning China.,2Key Laboratory of Cancer Etiology and Prevention in Liaoning Education Department, The First Hospital of China Medical University, Shenyang, 110001 China.,3Key Laboratory of GI Cancer Etiology and Prevention in Liaoning Province, The First Hospital of China Medical University, Shenyang, 110001 China
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29
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Alidoust M, Hamzehzadeh L, Rivandi M, Pasdar A. Polymorphisms in non-coding RNAs and risk of colorectal cancer: A systematic review and meta-analysis. Crit Rev Oncol Hematol 2018; 132:100-110. [PMID: 30447914 DOI: 10.1016/j.critrevonc.2018.09.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Revised: 07/23/2018] [Accepted: 09/05/2018] [Indexed: 02/07/2023] Open
Abstract
Colorectal cancer (CRC) has been regarded as a common cancer due to its prevailing incidence in both males and females. Recently, non-coding RNAs used as biomarkers for screening, diagnosis and prognosis of different cancers have been under the focus of attention. As a result of this, the aim of this study was to systematically review articles that investigated the SNPs in genes related to microRNAs and long non-coding RNAs to assess the genetic susceptibility of colorectal cancer risk. The outcome is presented as the results of a meta-analysis. We systematically searched PubMed, Web of Science, and Scopus to identify relevant studies published up to 20/5/2017. These included eligible studies consisting of 23,581 patients and 22,697 controls. The conferred risk was estimated and presented using odds ratios (ORs) and 95% confidence intervals (CI). The Hardy-Weinberg equilibrium (HWE) was assessed by the goodness-of-fit chi-square test in all studies. The power of each study was also calculated based on the available results. Out of 27 different microRNAs which had published results, although most of the studies were under powered, miR-146a and miR-196a were amongst the most studied microRNAs. For five miRNAs (miR-196a, miR-146a, miR-27a, miR-499 and miR-149) which we performed a meta-analysis, miR-27a and miR-149 gene polymorphisms were associated with susceptibility to CRC. Other miRNAs did not show any effect on the CRC risk. Overall, significant association between miR-149 rs2292832 and susceptibility to cancer was identified in a recessive genetic model, TT/ (TC + CC) (OR = 1.19, 95% CI = 1.02-1.39, P = 0.02). On the other hand, rs895819 (miR-27a) GG carriers were more susceptible to CRC (OR = 1.47, 95% CI = 1.21-1.78, P = <0.05) in a recessive genetic model. Analysis of the data based on race revealed that rs2910164 (miR-146a) polymorphism may decrease the risk of CRC among Europeans, in a co dominant model [OR = 0.81, 95% CI 0.66-0.99, p = 0.04], but not among Asians. In conclusion, certain miRNAs (miR-27a and miR-149) may affect the CRC risk and can be regarded as genetic markers amongst different populations. LncRNAs still have to be studied more to reach a conclusion for their association with CRC risk.
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Affiliation(s)
- Maryam Alidoust
- Department of Medical Genetics, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Leila Hamzehzadeh
- Department of Medical Genetics, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mahdi Rivandi
- Medical Genetics Research Centre, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Alireza Pasdar
- Department of Medical Genetics, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran; Division of Applied Medicine, Medical School, University of Aberdeen, Foresterhill, Aberdeen, UK.
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30
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Zhao C, Qiao C, Zong L, Chen Y. Long non-coding RNA-CCAT2 promotes the occurrence of non-small cell lung cancer by regulating the Wnt/β-catenin signaling pathway. Oncol Lett 2018; 16:4600-4606. [PMID: 30214594 DOI: 10.3892/ol.2018.9194] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Accepted: 05/04/2018] [Indexed: 12/15/2022] Open
Abstract
The present study aimed to investigate the biological function of colon cancer-associated transcript 2 (CCAT2) in the occurrence and progression of non-small cell lung carcinoma (NSCLC) and its potential use in the early diagnosis and molecular-targeted therapy of NSCLC. The tumor tissues, para-carcinoma tissues and associated clinical data of 36 patients with NSCLC were collected in order to detect the expression of CCAT2 and assess the impact of factors including histopathological type, Tumor-Node-Metastasis stage and lymph node metastasis on CCAT2 expression. The lung cancer NCI-H1975 cell line was transfected with a small interfering RNA (siRNA) plasmid to determine the effect of si-CCAT2 on NSCLC proliferation, invasion and metastasis. The effect of si-CCAT2 on the expression of nuclear and cytoplasmic β-catenin protein in the lung cancer NCI-H1975 cell line was detected using western blot analysis. The expression levels of CCAT2 in the tumor tissues of patients with NSCLC were significantly higher than those in the normal para-carcinoma tissues (t=8.580, P<0.01). Subsequent to CCAT2 silencing, the proliferation and invasive abilities of NCI-H1975 cells were significantly decreased compared with control cells (P<0.05). In the si-CCAT2 group, the level of nuclear and cytoplasmic β-catenin proteins was decreased, and the activity of the Wnt signaling pathway was significantly inhibited compared with the control cells (P<0.01), and a synergistic effect was exerted with the Wnt signaling inhibitor FH535. CCAT2 may therefore promote the occurrence of NSCLC by regulating the Wnt/β-catenin signaling pathway.
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Affiliation(s)
- Chengling Zhao
- School of Medicine, Shandong University School of Medicine, Jinan, Shandong 250100, P.R. China.,Anhui Clinical and Preclinical Key Laboratory of Respiratory Diseases, Department of Respiration, First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui 233004, P.R. China
| | - Chenchen Qiao
- Department of Cardiology, First Municipal Hospital of Bengbu, Bengbu, Anhui 233004, P.R. China
| | - Liguo Zong
- Department of Intensive Care Unit, Zaozhuang Municipal Hospital, Zaozhuang, Shandong 277001, P.R. China
| | - Yuqing Chen
- Anhui Clinical and Preclinical Key Laboratory of Respiratory Diseases, Department of Respiration, First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui 233004, P.R. China
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Wang BG, Xu Q, Lv Z, Fang XX, Ding HX, Wen J, Yuan Y. Association of twelve polymorphisms in three onco-lncRNA genes with hepatocellular cancer risk and prognosis: A case-control study. World J Gastroenterol 2018; 24:2482-2490. [PMID: 29930469 PMCID: PMC6010940 DOI: 10.3748/wjg.v24.i23.2482] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Revised: 04/17/2018] [Accepted: 05/18/2018] [Indexed: 02/06/2023] Open
Abstract
AIM To evaluate the association of 12 tag single nucleotide polymorphisms (tagSNPs) in three onco-long non-coding RNA (lncRNA) genes (HOTTIP, CCAT2, MALAT1) with the risk and prognosis of hepatocellular cancer (HCC).
METHODS Twelve tagSNPs covering the three onco-lncRNAs were genotyped by the KASP method in a total of 1338 samples, including 521 HCC patients and frequency-matched 817 controls. The samples were obtained from an unrelated Chinese population at the First Hospital of China Medical University from 2012-2015. The expression quantitative trait loci (eQTL) analyses were conducted to explore further the potential function of the promising SNPs.
RESULTS Three SNPs in HOTTIP, one promoter SNP in MALAT1, and one haplotype of HOTTIP were associated with HCC risk. The HOTTIP rs17501292, rs2067087, and rs17427960 SNPs were increased to 1.55-, 1.20-, and 1.18-fold HCC risk under allelic models (P = 0.012, 0.017 and 0.049, respectively). MALAT1 rs4102217 SNP was increased to a 1.32-fold HCC risk under dominant models (P = 0.028). In addition, the two-way interaction of HOTTIP rs17501292-MALAT1 rs619586 polymorphisms showed a decreased effect on HCC risk (Pinteraction = 0.028, OR = 0.30) and epistasis with each other. HOTTIP rs3807598 variant genotype showed significantly longer survival time in HBV negative subgroup (P = 0.049, HR = 0.12), and MALAT1 rs591291 showed significantly better prognosis in female and HBV negative subgroups (P = 0.022, HR = 0.37; P = 0.042, HR = 0.25, respectively). In the study, no significant effect was observed in eQTL analysis.
CONCLUSION Specific lncRNA (HOTTIP and MALAT1) SNPs have potential to be biomarkers for HCC risk and prognosis.
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Affiliation(s)
- Ben-Gang Wang
- Tumor Etiology and Screening Department of Cancer Institute and General Surgery, the First Hospital of China Medical University, and Key Laboratory of Cancer Etiology and Prevention (China Medical University), Liaoning Provincial Education Department, Shenyang 110001, Liaoning Province, China
- Hepatobiliary Surgery Department of General Surgery Institute, the First Hospital of China Medical University, Shenyang 110001, Liaoning Province, China
| | - Qian Xu
- Tumor Etiology and Screening Department of Cancer Institute and General Surgery, the First Hospital of China Medical University, and Key Laboratory of Cancer Etiology and Prevention (China Medical University), Liaoning Provincial Education Department, Shenyang 110001, Liaoning Province, China
| | - Zhi Lv
- Tumor Etiology and Screening Department of Cancer Institute and General Surgery, the First Hospital of China Medical University, and Key Laboratory of Cancer Etiology and Prevention (China Medical University), Liaoning Provincial Education Department, Shenyang 110001, Liaoning Province, China
| | - Xin-Xin Fang
- Tumor Etiology and Screening Department of Cancer Institute and General Surgery, the First Hospital of China Medical University, and Key Laboratory of Cancer Etiology and Prevention (China Medical University), Liaoning Provincial Education Department, Shenyang 110001, Liaoning Province, China
| | - Han-Xi Ding
- Tumor Etiology and Screening Department of Cancer Institute and General Surgery, the First Hospital of China Medical University, and Key Laboratory of Cancer Etiology and Prevention (China Medical University), Liaoning Provincial Education Department, Shenyang 110001, Liaoning Province, China
| | - Jing Wen
- Tumor Etiology and Screening Department of Cancer Institute and General Surgery, the First Hospital of China Medical University, and Key Laboratory of Cancer Etiology and Prevention (China Medical University), Liaoning Provincial Education Department, Shenyang 110001, Liaoning Province, China
| | - Yuan Yuan
- Tumor Etiology and Screening Department of Cancer Institute and General Surgery, the First Hospital of China Medical University, and Key Laboratory of Cancer Etiology and Prevention (China Medical University), Liaoning Provincial Education Department, Shenyang 110001, Liaoning Province, China
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32
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Bai JG, Tang RF, Shang JF, Qi S, Yu GD, Sun C. Upregulation of long non‑coding RNA CCAT2 indicates a poor prognosis and promotes proliferation and metastasis in intrahepatic cholangiocarcinoma. Mol Med Rep 2018; 17:5328-5335. [PMID: 29393466 DOI: 10.3892/mmr.2018.8518] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Accepted: 11/02/2017] [Indexed: 11/06/2022] Open
Abstract
Intrahepatic cholangiocarcinoma (IHCC) is an aggressive cancer with a poor survival rate and is the second most common type of primary cancer of the hepatobiliary system. At present, the molecular mechanisms of IHCC initiation and progression remain unclear. Recent evidence has indicated that long non‑coding RNAs (lncRNAs) serve a crucial role in cancer development; however, the functional role of lncRNAs in IHCC has not been investigated in detail. In the present study, a marked overexpression of lncRNA colon cancer‑associated transcript 2 (CCAT2) was observed in IHCC cell lines and clinical specimens. Statistical analysis of IHCC clinicopathological characteristics and CCAT2 expression data revealed that high CCAT2 expression levels correlated with microvascular invasion, differentiation grade, tumor (T), lymph node (N), metastasis (M) and overall TNM stages of IHCC (P<0.05). Kaplan‑Meier analysis demonstrated that CCAT2 upregulation was associated with poor overall survival and progression‑free survival in IHCC. Furthermore, high CCAT2 expression was identified as an independent risk factor of IHCC poor prognosis in both univariate and multivariate Cox regression analyses. The role of CCAT2 in promoting IHCC cell proliferation, motility and invasion was further confirmed with in vitro assays. Therefore, CCAT2 may promote IHCC progression and metastasis, and may be a promising prognostic biomarker and therapeutic target in IHCC.
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Affiliation(s)
- Jian-Guo Bai
- Department of Hepatobiliary Surgery, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050011, P.R. China
| | - Rui-Feng Tang
- Department of Hepatobiliary Surgery, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050011, P.R. China
| | - Jun-Feng Shang
- Department of General Surgery, The People's Hospital of Daming, Handan, Hebei 056900, P.R. China
| | - Shuai Qi
- Second Department of Surgery, The People's Hospital of Luancheng, Shijiazhuang, Hebei 051430, P.R. China
| | - Guo-Dong Yu
- Department of Hepatobiliary Surgery, The Affiliated Hospital of Hebei University, Baoding, Hebei 071000, P.R. China
| | - Chao Sun
- Department of Hepatobiliary Surgery, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050011, P.R. China
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Zhang X, Xiong Y, Tang F, Bian Y, Chen Y, Zhang F. Long noncoding RNA HNF1A-AS1 indicates a poor prognosis of colorectal cancer and promotes carcinogenesis via activation of the Wnt/β-catenin signaling pathway. Biomed Pharmacother 2017; 96:877-883. [DOI: 10.1016/j.biopha.2017.10.033] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Revised: 09/13/2017] [Accepted: 10/09/2017] [Indexed: 11/28/2022] Open
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Shaker OG, Senousy MA, Elbaz EM. Association of rs6983267 at 8q24, HULC rs7763881 polymorphisms and serum lncRNAs CCAT2 and HULC with colorectal cancer in Egyptian patients. Sci Rep 2017; 7:16246. [PMID: 29176650 PMCID: PMC5701156 DOI: 10.1038/s41598-017-16500-4] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Accepted: 11/13/2017] [Indexed: 02/08/2023] Open
Abstract
The impact of HULC rs7763881 on colorectal cancer (CRC) susceptibility is not yet known. Also, the biological function of the cancer-related rs6983267 remains unclear. We investigated the association of these SNPs with the risk of CRC and adenomatous polyps (AP), their correlation with CCAT2 and HULC expression, and the potential of serum CCAT2 and HULC as biomarkers for CRC. 120 CRC patients, 30 AP patients, and 96 healthy controls were included. Genotyping and serum lncRNAs were assayed by qPCR. Studied SNPs were not associated with AP susceptibility. rs6983267 GG was associated with increased CRC risk, whereas rs7763881 AC was protective. rs7763881 and rs6983267 CT haplotype was protective. Serum CCAT2 and HULC were upregulated in CRC and AP patients versus controls and discriminated these groups by ROC analysis. rs6983267 GG and rs7763881 AA patients demonstrated higher serum CCAT2 and HULC compared with GT/TT and AC, respectively. rs6983267 and serum HULC predicted CRC diagnosis among non-CRC groups (AP + controls) by multivariate analysis. Studied SNPs or serum long noncoding RNAs weren't correlated with nodal or distant metastasis. In conclusion, rs6983267 and rs7763881 are potential genetic markers of CRC predisposition and correlate with serum CCAT2 and HULC, two novel potential non-invasive diagnostic biomarkers for CRC.
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Affiliation(s)
- Olfat G Shaker
- Medical Biochemistry and Molecular Biology Department, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Mahmoud A Senousy
- Biochemistry Department, Faculty of Pharmacy, Cairo University, Cairo, Egypt.
| | - Eman M Elbaz
- Biochemistry Department, Faculty of Pharmacy, Cairo University, Cairo, Egypt
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Prognostic and clinicopathological significance of CCAT2 in Chinese patients with various tumors. Int J Biol Markers 2017. [PMID: 28623646 DOI: 10.5301/ijbm.5000281] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
BACKGROUND Colon cancer-associated transcript 2 (CCAT2) as a long noncoding RNA (lncRNA) is overexpressed and plays a significant prognostic role in patients with tumors. The present study aimed to comprehensively evaluate the clinical value of CCAT2 in the Chinese population, as a potential prognostic marker in multiple cancers. METHODS A systematic search of eligible studies was conducted in the PubMed, Web of Science, Cochrane Library, Wanfang and the China National Knowledge Infrastructure databases as of March 31, 2017. Approximately 1,711 tumor patients from 16 eligible studies were selected. Analyses of the pooled data were performed, and the odds ratio (OR) or hazard ratio (HR) and the 95% confidence interval (95% CI) were calculated and summarized to evaluate the strength of this association using a fixed- or random-effects model. RESULTS Overall analyses showed that increased CCAT2 expression was associated with a higher risk of lymph node metastasis (LNM), an increased potential for distant metastasis (DM) and higher clinical stage (p<0.001 for LNM, p = 0.001 for DM, p<0.001 for clinical stage). HR and the 95% CI for overall survival (OS) were assessed to pool the effect size using a fixed-effects model. A significant association was observed between increased CCAT2 expression and poor OS (pooled HR = 1.91, 95% CI, 1.63-2.22, p<0.001). CONCLUSIONS These results indicate that CCAT2 is a biomarker to predict tumor progression and a potential prognostic marker in multiple cancers. Additional well-designed clinical studies are needed to validate these findings.
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Heery R, Finn SP, Cuffe S, Gray SG. Long Non-Coding RNAs: Key Regulators of Epithelial-Mesenchymal Transition, Tumour Drug Resistance and Cancer Stem Cells. Cancers (Basel) 2017; 9:cancers9040038. [PMID: 28430163 PMCID: PMC5406713 DOI: 10.3390/cancers9040038] [Citation(s) in RCA: 129] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Revised: 04/14/2017] [Accepted: 04/18/2017] [Indexed: 02/07/2023] Open
Abstract
Epithelial mesenchymal transition (EMT), the adoption by epithelial cells of a mesenchymal-like phenotype, is a process co-opted by carcinoma cells in order to initiate invasion and metastasis. In addition, it is becoming clear that is instrumental to both the development of drug resistance by tumour cells and in the generation and maintenance of cancer stem cells. EMT is thus a pivotal process during tumour progression and poses a major barrier to the successful treatment of cancer. Non-coding RNAs (ncRNA) often utilize epigenetic programs to regulate both gene expression and chromatin structure. One type of ncRNA, called long non-coding RNAs (lncRNAs), has become increasingly recognized as being both highly dysregulated in cancer and to play a variety of different roles in tumourigenesis. Indeed, over the last few years, lncRNAs have rapidly emerged as key regulators of EMT in cancer. In this review, we discuss the lncRNAs that have been associated with the EMT process in cancer and the variety of molecular mechanisms and signalling pathways through which they regulate EMT, and finally discuss how these EMT-regulating lncRNAs impact on both anti-cancer drug resistance and the cancer stem cell phenotype.
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Affiliation(s)
- Richard Heery
- Thoracic Oncology Research Group, Rm 2.09, Trinity Translational Medical Institute, St. James's Hospital, Dublin D08 W9RT, Ireland.
- Masters in Translational Oncology Program, Department of Surgery, Trinity College Dublin, Trinity Translational Medical Institute, St. James's Hospital, Dublin D08 W9RT, Ireland.
| | - Stephen P Finn
- Department of Histopathology & Morbid Anatomy, Trinity College Dublin, Dublin D08 RX0X, Ireland.
| | - Sinead Cuffe
- HOPE Directorate, St. James's Hospital, Dublin D08 RT2X, Ireland.
| | - Steven G Gray
- Thoracic Oncology Research Group, Rm 2.09, Trinity Translational Medical Institute, St. James's Hospital, Dublin D08 W9RT, Ireland.
- HOPE Directorate, St. James's Hospital, Dublin D08 RT2X, Ireland.
- Department of Clinical Medicine, School of Medicine, Trinity College Dublin, Dublin D02 R590, Ireland.
- Labmed Directorate, St. James's Hospital, Dublin D08 K0Y5, Ireland.
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Jing X, Liang H, Cui X, Han C, Hao C, Huo K. Long noncoding RNA CCAT2 can predict metastasis and a poor prognosis: A meta-analysis. Clin Chim Acta 2017; 468:159-165. [PMID: 28263738 DOI: 10.1016/j.cca.2017.03.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Revised: 02/28/2017] [Accepted: 03/01/2017] [Indexed: 12/13/2022]
Abstract
BACKGROUND Colon cancer associated transcript 2 (CCAT2), a novel long non-coding RNA (lncRNA), plays a key role in tumorigenesis. This meta-analysis systematically summarizes the relationship between CCAT2 and cancers. METHODS A comprehensive, computerized literature search was conducted in PubMed, Cochrane library, Chinese National Knowledge Infrastructure, and Chinese Wan Fang database. Odds ratios (ORs), hazard ratios (HRs) and their 95% confidence interval (95% CI) were calculated to assess the effect size. A total of 9 studies were enrolled in this meta-analysis, which was performed by Revman5.3 software and Stata12.0. RESULTS Our meta-analysis indicates that patients with elevated expression of CCAT2 are prone to developing distant metastasis (DM) (OR=12.42; 95% CI=5.77-26.74; P < 0.00001), which is associated with a tendency for lymph nodes metastasis (LNM) (OR=3.60 95% CI=1.65-7.87, P=0.001). Further analyses reveal that patients with high CCAT2 expression have poorer overall survival (OS) (HR=1.53, 95% CI=1.15-2.02, P=0.003, random-effects) and progression-free survival (PFS) (HR=2.88, 95% CI=1.81-4.56, P < 0.00001, fixed-effects). CONCLUSIONS Therefore, CCAT2 may be a potential novel biomarker for indicating clinical outcomes of human cancers.
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Affiliation(s)
- Xuan Jing
- Department of Clinical Laboratory, Shanxi Provincial People's Hospital, Affiliate of Shanxi Medical University, 29 Shuangta Road, Taiyuan 030012, China
| | - Hongping Liang
- Department of Clinical Laboratory, Shanxi Provincial People's Hospital, Affiliate of Shanxi Medical University, 29 Shuangta Road, Taiyuan 030012, China
| | - Xiangrong Cui
- Department of Reproductive Medicine Center, Children's Hospital of Shanxi and Women, Health Center of Shanxi, Taiyuan, Shanxi 030000, China; Department of Clinical Laboratory, The Central Hospital of Linfen, Affiliate of Shanxi Medical University, 101 Pingyang North Street, Linfen 04100, China.
| | - Chongyang Han
- Department of Clinical Laboratory, Shanxi Provincial People's Hospital, Affiliate of Shanxi Medical University, 29 Shuangta Road, Taiyuan 030012, China
| | - Chonghua Hao
- Department of Clinical Laboratory, Shanxi Provincial People's Hospital, Affiliate of Shanxi Medical University, 29 Shuangta Road, Taiyuan 030012, China
| | - Kai Huo
- Department of neurosurgery, Shanxi Provincial Tumor Hospital, 3 Staff Village, Taiuan, Shanxi 030000, China
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