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Li M, An J, Ren H, Gui J, Wang H, Wu S, Wu R, Xiao H, Wang L. Knockdown of Long Noncoding RNA CCAT2 Suppresses Malignant Phenotype in Human Laryngeal Squamous Cell Carcinoma. Bull Exp Biol Med 2023; 175:673-680. [PMID: 37874495 DOI: 10.1007/s10517-023-05924-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Indexed: 10/25/2023]
Abstract
This study aimed to explore the biological role and mechanism underlying the effects of colon cancer-associated transcript 2 (CCAT2), a long noncoding RNA (lncRNA) in human laryngeal squamous cell carcinoma (LSCC). CCAT2 expression levels in clinical LSCC samples and TU-212 cell line were evaluated by quantitative real-time PCR. The correlation of CCAT2 expression level with clinical-pathological characteristics of patients and their prognosis was analyzed. The functional role of CCAT2 in human LSCC was assessed by Cell Counting Kit-8, Transwell assay, flow cytometric analysis, and LSCC xenograft experiment in vivo. The expression of potential targeted proteins was detected by Western blotting and immunohistochemistry. We found that expression of CCAT2 was significantly elevated in LSCC tissues and TU-212 cells (p<0.05). Survival analysis showed that LSCC patients with high expression of CCAT2 had a shorter 5-year overall survival rate than those with low expression (p<0.05). In addition, CCAT2 silencing with short hairpin RNA significantly decreased the proliferative and invasive potential of TU-212 cells (p<0.05) and promoted their apoptosis. In Nude mice, CCAT2 knockdown suppressed the growth of tumor and decreased its volume and weight in comparison with the controls (p<0.05). In TU-212 cells, CCAT2 silencing with short hairpin RNA significantly down-regulated the expression of β-catenin and CDK8 (p<0.05). Thus, knockdown of CCAT2 suppresses proliferation and invasion of the cells and inhibits Wnt/β-catenin signaling pathway in LSCC, which indicates novel therapeutic targets and prognostic indicators in patients with LSCC.
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Affiliation(s)
- M Li
- Department of Otolaryngology-Head and Neck Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - J An
- Department of Otolaryngology, XuZhou Central Hospital, XuZhou Clinical School of Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - H Ren
- Department of Infection Control, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - J Gui
- Department of Otolaryngology-Head and Neck Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - H Wang
- Department of Otolaryngology-Head and Neck Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - S Wu
- Department of Otolaryngology-Head and Neck Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - R Wu
- Department of Otolaryngology-Head and Neck Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - H Xiao
- Department of Otolaryngology-Head and Neck Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, China.
| | - L Wang
- Department of Orthopedics, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
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Pourramezan Z, Attar FA, Yusefpour M, Azizi M, Oloomi M. Circulating LncRNAs landscape as potential biomarkers in breast cancer. Cancer Rep (Hoboken) 2023; 6:e1722. [PMID: 36274054 PMCID: PMC9940007 DOI: 10.1002/cnr2.1722] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 07/01/2022] [Accepted: 09/07/2022] [Indexed: 02/22/2023] Open
Abstract
BACKGROUND In Iran, the delay in diagnosis and treatment of breast cancer results in low survival rates. AIM It is essential to characterize new therapeutic targets and prognostic breast cancer biomarkers. The rising evidence suggested that long non-coding RNAs (lncRNAs) expression levels are deregulated in human cancers and can use as biomarkers for the rapid diagnosis of breast cancer. METHODS In the present study, a quantitative real-time polymerase chain reaction (qRT-PCR) technique was used to measure 20 oncogenic and tumor suppressor lncRNAs expression levels in whole blood samples of female breast cancer patients and healthy women. Receiver operating characteristic curve (ROC) was used to assess the diagnostic value of each selected lncRNA as a biomarker. RESULTS The results revealed that some circulating lncRNAs (MEG3, NBAT1, NKILA, GAS5, EPB41L4A-AS2, Z38, and BC040587) were significantly down-regulated in breast cancer patients compared to healthy women. In contrast, other circulating lncRNAs (H19, SPRY4-IT1, XIST, UCA1, AC026904.1, CCAT1, CCAT2, ITGB2-AS, and AK058003) were significantly up-regulated in breast cancer patients compared to controls. It was shown that the expression levels of NKILA, and NBAT1 lncRNAs were related to tumor size, and BC040587 expression level related to age, node metastasis, tumor size, and grade (p < .05). The association between H19 and SPRY4-IT1 lncRNAs with HER-2 was confirmed statistically (p < .05). ROC curves illustrated that the blood levels of SPRY4-IT1, XIST, and H19 lncRNAs have excellent potential in discriminating breast cancer from the healthy controls, showing an AUC of 1.0 (95% CI 1.0-1.0, p = .00), 0.898 (95% CI 0.815-0.981, p = .00), and 0.848 (95% CI 0.701-0.995, p = .01), respectively. CONCLUSION In conclusion, the expression levels of circulating H19 and SPRY4-IT1 lncRNAs in breast cancer patients could consider as the prognostic biomarkers and therapeutic targets in breast cancer, because of their excellent power in discriminating breast cancer from healthy individuals and the significant correlation of H19, and SPRY4-IT1 lncRNAs with clinicopathological traits. We also suggest the possible application of BC040587 lncRNA as a diagnostic and prognostic indicator to assess tumor progression in case of verification in larger patients' cohorts.
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Affiliation(s)
| | | | - Maryam Yusefpour
- Department of Molecular BiologyPasteur Institute of IranTehranIran
| | - Masoumeh Azizi
- Department of Molecular MedicineBiotechnology Research Center, Pasteur Institute of IranTehranIran
| | - Mana Oloomi
- Department of Molecular BiologyPasteur Institute of IranTehranIran
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He Z, Wang X, Qi Y, Zhu C, Zhao Z, Zhang X, Liu X, Li S, Zhao F, Wang J, Shi B, Hu J. Long-stranded non-coding RNAs temporal-specific expression profiles reveal longissimus dorsi muscle development and intramuscular fat deposition in Tianzhu white yak. J Anim Sci 2023; 101:skad394. [PMID: 38029315 PMCID: PMC10760506 DOI: 10.1093/jas/skad394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2023] [Accepted: 11/28/2023] [Indexed: 12/01/2023] Open
Abstract
The process of muscle development and intramuscular fat (IMF) deposition is quite complex and controlled by both mRNAs and ncRNAs. Long-stranded non-coding RNAs (LncRNAs) are involved in various biological processes in mammals while also playing a critical role in muscle development and fat deposition. In the present study, RNA-Seq was used to comprehensively study the expression of lncRNAs and mRNAs during muscle development and intramuscular fat deposition in postnatal Tianzhu white yaks at three stages, including 6 mo of age (calve, n = 6), 30 mo of age (young cattle, n = 6) and 54 mo of age (adult cattle, n = 6). The results indicated that a total of 2,101 lncRNAs and 20,855 mRNAs were screened across the three stages, of which the numbers of differential expression (DE) lncRNAs and DE mRNAs were 289 and 1,339, respectively, and DE lncRNAs were divided into eight different expression patterns based on expression trends. Gene ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis revealed that some DE mRNAs overlapped with target genes of lncRNAs, such as NEDD4L, SCN3B, AGT, HDAC4, DES, MYH14, KLF15 (muscle development), ACACB, PCK2, LIPE, PIK3R1, PNPLA2, and MGLL (intramuscular fat deposition). These DE mRNAs were significantly enriched in critical muscle development and IMF deposition-related pathways and GO terms, such as AMPK signaling pathway, PI3K-Akt signaling pathway, PPAR signaling pathway, etc. In addition, lncRNA-mRNA co-expression network analysis revealed that six lncRNAs (MSTRG.20152.2, MSTRG.20152.3, XR_001351700.1, MSTRG.8190.1, MSTRG.4827.1, and MSTRG.11486.1) may play a major role in Tianzhu white yak muscle development and lipidosis deposition. Therefore, this study enriches the database of yak lncRNAs and could help to further explore the functions and roles of lncRNAs in different stages of muscle development and intramuscular fat deposition in the Tianzhu white yak.
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Affiliation(s)
- Zhaohua He
- Gansu Key Laboratory of Herbivorous Animal Biotechnology, Faculty of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Xiangyan Wang
- Gansu Key Laboratory of Herbivorous Animal Biotechnology, Faculty of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Youpeng Qi
- Gansu Key Laboratory of Herbivorous Animal Biotechnology, Faculty of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Chune Zhu
- Gansu Key Laboratory of Herbivorous Animal Biotechnology, Faculty of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Zhidong Zhao
- Gansu Key Laboratory of Herbivorous Animal Biotechnology, Faculty of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Xiaolan Zhang
- Gansu Key Laboratory of Herbivorous Animal Biotechnology, Faculty of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Xiu Liu
- Gansu Key Laboratory of Herbivorous Animal Biotechnology, Faculty of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Shaobin Li
- Gansu Key Laboratory of Herbivorous Animal Biotechnology, Faculty of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Fangfang Zhao
- Gansu Key Laboratory of Herbivorous Animal Biotechnology, Faculty of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Jiqing Wang
- Gansu Key Laboratory of Herbivorous Animal Biotechnology, Faculty of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Bingang Shi
- Gansu Key Laboratory of Herbivorous Animal Biotechnology, Faculty of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Jiang Hu
- Gansu Key Laboratory of Herbivorous Animal Biotechnology, Faculty of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
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Liu R, Han M, Liu X, Yu K, Bai X, Dong Y. Genome-Wide Identification and Characterization of Long Non-Coding RNAs in Longissimus dorsi Skeletal Muscle of Shandong Black Cattle and Luxi Cattle. Front Genet 2022; 13:849399. [PMID: 35651943 PMCID: PMC9149217 DOI: 10.3389/fgene.2022.849399] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Accepted: 04/08/2022] [Indexed: 12/27/2022] Open
Abstract
There is an increasing understanding of the possible regulatory role of long non-coding RNAs (LncRNA). Studies on livestock have mainly focused on the regulation of cell differentiation, fat synthesis, and embryonic development. However, there has been little study of skeletal muscle of domestic animals and the potential role of lncRNA. In this study, the transcriptome numbers of longissimus muscle of different beef cattle (Shandong black catle and Luxi catlle) were used to construct muscle related lncRNAs-miRNA-mRNA interaction network through bioinformatics analysis. This is helpful to clarify the molecular mechanism of bovine muscle development, and can be used to promote animal husbandry and improve animal husbandry production. According to the screening criteria of |FC|≧2 and q < 0.05, a total of 1,415 transcripts (of which 480 were LncRNAs) were differentially expressed (q < 0.05) in the different breeds. Further, we found that the most differentially expressed LncRNAs were found on chromosome 9, in which the differentially expressed LncRNAs targeted 1,164 protein coding genes (MYORG, Wnt4, PAK1, ADCY7,etc) (upstream and downstream<50 Kb). In addition, Pearson’s correlation coefficients of co-expression levels indicated a potential trans regulatory relationship between the differentially expressed LncRNAs and 43844 mRNAs (r > 0.9). The identified co-expressed mRNAs (MYORG, Dll1, EFNB2, SOX6, MYOCD, and MYLK3) are related to the formation of muscle structure, and enriched in muscle system process, strained muscle cell differentiation, muscle cell development, striated muscle tissue development, calcium signaling, and AMPK signaling. Additionally, we also found that some LncRNAs (LOC112444238, LOC101903367, LOC104975788, LOC112441863, LOC112449549, and LOC101907194) may interact with miRNAs related to cattle muscle growth and development. Based on this, we constructed a LncRNAs-miRNA-mRNA interaction network as the putative basis for biological regulation in cattle skeletal muscle. Interestingly, a candidate differential LncRNA (LOC104975788) and a protein-coding gene (Pax7) contain miR-133a binding sites and binding was confirmed by luciferase reporter assay. LOC104975788 may combined miR-133a competitively with Pax7, thus relieving the inhibitory effect of miR-133a on Pax7 to regulate skeletal muscle development. These results will provide the theoretical basis for further study of LncRNA regulation and activity in different cattle breeds.
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Affiliation(s)
- Ruili Liu
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, China
| | - Mingxuan Han
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, China
| | - Xianxun Liu
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, China
| | - Kun Yu
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, China
| | - Xuejin Bai
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, China.,Laboratory of Animal Molecular Shandong Black Cattle Breeding Engineering Technology Center, College of Animal Science, Qingdao Agricultural University, Qingdao, China
| | - Yajuan Dong
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, China.,Laboratory of Animal Molecular Shandong Black Cattle Breeding Engineering Technology Center, College of Animal Science, Qingdao Agricultural University, Qingdao, China
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Han Y, Zhao G, Shi X, Wang Y, Wen X, Zhang L, Guo X. The Emerging Role of Long Non-Coding RNAs in Esophageal Cancer: Functions in Tumorigenesis and Clinical Implications. Front Pharmacol 2022; 13:885075. [PMID: 35645836 PMCID: PMC9137892 DOI: 10.3389/fphar.2022.885075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Accepted: 04/12/2022] [Indexed: 11/17/2022] Open
Abstract
Esophageal cancer (EC) is one of the most common malignancies of digestive tracts with poor five-year survival rate. Hence, it is very significant to further investigate the occurrence and development mechanism of esophageal cancer, find more effective biomarkers and promote early diagnosis and effective treatment. Long non-coding RNAs (lncRNAs) are generally defined as non-protein-coding RNAs with more than 200 nucleotides in length. Existing researches have shown that lncRNAs could act as sponges, guides, scaffolds, and signal molecules to influence the oncogene or tumor suppressor expressions at transcriptional, post-transcriptional, and protein levels in crucial cellular processes. Currently, the dysregulated lncRNAs are reported to involve in the pathogenesis and progression of EC. Importantly, targeting EC-related lncRNAs through genome editing, RNA interference and molecule drugs may be one of the most potential therapeutic methods for the future EC treatment. In this review, we summarized the biological functions and molecular mechanisms of lncRNAs, including oncogenic lncRNAs and tumor suppressor lncRNAs in EC. In addition, we generalized the excellent potential lncRNA candidates for diagnosis, prognosis and therapy in EC. Finally, we discussed the current challenges and opportunities of lncRNAs for EC.
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Affiliation(s)
- Yali Han
- Departments of Physiology, Institute of Biomedical Informatics, Bioinformatics Center, Henan Provincial Engineering Center for Tumor Molecular Medicine, School of Basic Medical Sciences, Academy for Advanced Interdisciplinary Studies, Henan University, Kaifeng, China
| | - Guo Zhao
- Department of Preventive Medicine, Institute of Biomedical Informatics, Bioinformatics Center, Henan Provincial Engineering Center for Tumor Molecular Medicine, School of Basic Medical Sciences, Academy for Advanced Interdisciplinary Studies, Henan University, Kaifeng, China
| | - Xinhang Shi
- Department of Preventive Medicine, Institute of Biomedical Informatics, Bioinformatics Center, Henan Provincial Engineering Center for Tumor Molecular Medicine, School of Basic Medical Sciences, Academy for Advanced Interdisciplinary Studies, Henan University, Kaifeng, China
| | - Yushan Wang
- Departments of Physiology, Institute of Biomedical Informatics, Bioinformatics Center, Henan Provincial Engineering Center for Tumor Molecular Medicine, School of Basic Medical Sciences, Academy for Advanced Interdisciplinary Studies, Henan University, Kaifeng, China
| | - Xin Wen
- Department of Preventive Medicine, Institute of Biomedical Informatics, Bioinformatics Center, Henan Provincial Engineering Center for Tumor Molecular Medicine, School of Basic Medical Sciences, Academy for Advanced Interdisciplinary Studies, Henan University, Kaifeng, China
| | - Lu Zhang
- Department of Preventive Medicine, Institute of Biomedical Informatics, Bioinformatics Center, Henan Provincial Engineering Center for Tumor Molecular Medicine, School of Basic Medical Sciences, Academy for Advanced Interdisciplinary Studies, Henan University, Kaifeng, China
| | - Xiangqian Guo
- Department of Preventive Medicine, Institute of Biomedical Informatics, Bioinformatics Center, Henan Provincial Engineering Center for Tumor Molecular Medicine, School of Basic Medical Sciences, Academy for Advanced Interdisciplinary Studies, Henan University, Kaifeng, China
- *Correspondence: Xiangqian Guo,
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ZeinElAbdeen YA, AbdAlSeed A, Youness RA. Decoding Insulin-Like Growth Factor Signaling Pathway From a Non-coding RNAs Perspective: A Step Towards Precision Oncology in Breast Cancer. J Mammary Gland Biol Neoplasia 2022; 27:79-99. [PMID: 35146629 DOI: 10.1007/s10911-022-09511-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Accepted: 01/24/2022] [Indexed: 12/21/2022] Open
Abstract
Breast cancer (BC) is a highly complex and heterogenous disease. Several oncogenic signaling pathways drive BC oncogenic activity, thus hindering scientists to unravel the exact molecular pathogenesis of such multifaceted disease. This highlights the urgent need to find a key regulator that tunes up such intertwined oncogenic drivers to trim the malignant transformation process within the breast tissue. The Insulin-like growth factor (IGF) signaling pathway is a tenacious axis that is heavily intertwined with BC where it modulates the amplitude and activity of vital downstream oncogenic signaling pathways. Yet, the complexity of the pathway and the interactions driven by its different members seem to aggravate its oncogenicity and hinder its target-ability. In this review, the authors shed the light on the stubbornness of the IGF signaling pathway and its potential regulation by non-coding RNAs in different BC subtypes. Nonetheless, this review also spots light on the possible transport systems available for efficient delivery of non-coding RNAs to their respective targets to reach a personalized treatment code for BC patients.
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Affiliation(s)
- Yousra Ahmed ZeinElAbdeen
- The Molecular Genetics Research Team, Pharmaceutical Biology Department, Faculty of Pharmacy and Biotechnology, German University, Main Entrance Al Tagamoa Al Khames, New Cairo CityCairo, 11835, Egypt
| | - Amna AbdAlSeed
- The Molecular Genetics Research Team, Pharmaceutical Biology Department, Faculty of Pharmacy and Biotechnology, German University, Main Entrance Al Tagamoa Al Khames, New Cairo CityCairo, 11835, Egypt
- University of Khartoum, Al-Gama a Avenue, 11115, Khartoum, Sudan
| | - Rana A Youness
- The Molecular Genetics Research Team, Pharmaceutical Biology Department, Faculty of Pharmacy and Biotechnology, German University, Main Entrance Al Tagamoa Al Khames, New Cairo CityCairo, 11835, Egypt.
- School of Life and Medical Sciences, University of Hertfordshire Hosted By Global Academic Foundation, New Administrative Capital, Cairo, 11586, Egypt.
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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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Shi J, Guo C, Ma J. CCAT2 enhances autophagy-related invasion and metastasis via regulating miR-4496 and ELAVL1 in hepatocellular carcinoma. J Cell Mol Med 2021; 25:8985-8996. [PMID: 34409736 PMCID: PMC8435435 DOI: 10.1111/jcmm.16859] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 07/07/2021] [Accepted: 07/31/2021] [Indexed: 12/14/2022] Open
Abstract
Autophagy is thought to contribute to the pathogenesis of many diseases, including cancer. Long non‐coding RNA (lncRNA) CCAT2 functions as an oncogene in a variety of tumours. However, it is still unknown whether CCAT2 is involved in autophagy and metastasis of hepatocellular carcinoma (HCC). In our study, we found that lncRNA CCAT2 expression was significantly increased in HCC tissue and was correlated with advanced stage and venous invasion. Further experiments revealed that CCAT2 induced autophagy and promoted migration and invasion in vitro and in vivo. Mechanistic investigations found that CCAT2 involved in HCC by regulating miR‐4496/Atg5 in cytoplasm. In nucleus, CCAT2 bound with ELAVL1/HuR to facilitate HCC progression. Our findings suggest that CCAT2 is an oncogenic factor in the progression of HCC with different regulatory mechanisms and may serve as a target for HCC therapy.
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Affiliation(s)
- Jing Shi
- Affiliated Hospital of Jining Medical University, Jining, China
| | - Cao Guo
- Institute of Medical Sciences, Xiangya Hospital, Central South University, Changsha, China
| | - Junli Ma
- Affiliated Hospital of Jining Medical University, Jining, China
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Barazetti JF, Jucoski TS, Carvalho TM, Veiga RN, Kohler AF, Baig J, Al Bizri H, Gradia DF, Mader S, Carvalho de Oliveira J. From Micro to Long: Non-Coding RNAs in Tamoxifen Resistance of Breast Cancer Cells. Cancers (Basel) 2021; 13:3688. [PMID: 34359587 PMCID: PMC8345104 DOI: 10.3390/cancers13153688] [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: 03/31/2021] [Revised: 07/03/2021] [Accepted: 07/15/2021] [Indexed: 12/14/2022] Open
Abstract
Breast cancer is the most commonly diagnosed cancer and the leading cause of cancer mortality among women. Two thirds of patients are classified as hormone receptor positive, based on expression of estrogen receptor alpha (ERα), the main driver of breast cancer cell proliferation, and/or progesterone receptor, which is regulated by ERα. Despite presenting the best prognosis, these tumors can recur when patients acquire resistance to treatment by aromatase inhibitors or antiestrogen such as tamoxifen (Tam). The mechanisms that are involved in Tam resistance are complex and involve multiple signaling pathways. Recently, roles for microRNAs and lncRNAs in controlling ER expression and/or tamoxifen action have been described, but the underlying mechanisms are still little explored. In this review, we will discuss the current state of knowledge on the roles of microRNAs and lncRNAs in the main mechanisms of tamoxifen resistance in hormone receptor positive breast cancer. In the future, this knowledge can be used to identify patients at a greater risk of relapse due to the expression patterns of ncRNAs that impact response to Tam, in order to guide their treatment more efficiently and possibly to design therapeutic strategies to bypass mechanisms of resistance.
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Affiliation(s)
- Jéssica Fernanda Barazetti
- Post-Graduation Program in Genetics, Department of Genetics, Federal University of Parana, Curitiba 81530-000, Parana, Brazil; (J.F.B.); (T.S.J.); (T.M.C.); (R.N.V.); (A.F.K.); (D.F.G.)
| | - Tayana Shultz Jucoski
- Post-Graduation Program in Genetics, Department of Genetics, Federal University of Parana, Curitiba 81530-000, Parana, Brazil; (J.F.B.); (T.S.J.); (T.M.C.); (R.N.V.); (A.F.K.); (D.F.G.)
| | - Tamyres Mingorance Carvalho
- Post-Graduation Program in Genetics, Department of Genetics, Federal University of Parana, Curitiba 81530-000, Parana, Brazil; (J.F.B.); (T.S.J.); (T.M.C.); (R.N.V.); (A.F.K.); (D.F.G.)
| | - Rafaela Nasser Veiga
- Post-Graduation Program in Genetics, Department of Genetics, Federal University of Parana, Curitiba 81530-000, Parana, Brazil; (J.F.B.); (T.S.J.); (T.M.C.); (R.N.V.); (A.F.K.); (D.F.G.)
| | - Ana Flávia Kohler
- Post-Graduation Program in Genetics, Department of Genetics, Federal University of Parana, Curitiba 81530-000, Parana, Brazil; (J.F.B.); (T.S.J.); (T.M.C.); (R.N.V.); (A.F.K.); (D.F.G.)
| | - Jumanah Baig
- Department of Biochemistry and Molecular Medicine, University of Montreal, Montreal, QC H3T 1J4, Canada; (J.B.); (H.A.B.)
- Institute for Research in Immunology and Cancer, University of Montreal, Montreal, QC H3T 1J4, Canada
| | - Hend Al Bizri
- Department of Biochemistry and Molecular Medicine, University of Montreal, Montreal, QC H3T 1J4, Canada; (J.B.); (H.A.B.)
| | - Daniela Fiori Gradia
- Post-Graduation Program in Genetics, Department of Genetics, Federal University of Parana, Curitiba 81530-000, Parana, Brazil; (J.F.B.); (T.S.J.); (T.M.C.); (R.N.V.); (A.F.K.); (D.F.G.)
| | - Sylvie Mader
- Department of Biochemistry and Molecular Medicine, University of Montreal, Montreal, QC H3T 1J4, Canada; (J.B.); (H.A.B.)
- Institute for Research in Immunology and Cancer, University of Montreal, Montreal, QC H3T 1J4, Canada
| | - Jaqueline Carvalho de Oliveira
- Post-Graduation Program in Genetics, Department of Genetics, Federal University of Parana, Curitiba 81530-000, Parana, Brazil; (J.F.B.); (T.S.J.); (T.M.C.); (R.N.V.); (A.F.K.); (D.F.G.)
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Choudhry H, Hassan MA, Al-Malki AL, Al-Sakkaf KA. Suppression of circulating AP001429.1 long non-coding RNA in obese patients with breast cancer. Oncol Lett 2021; 22:508. [PMID: 33986869 PMCID: PMC8114468 DOI: 10.3892/ol.2021.12769] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2020] [Accepted: 03/31/2021] [Indexed: 12/11/2022] Open
Abstract
Long non-coding RNAs (lncRNAs), a type of cellular RNA, play a critical regulatory role in several physiological developments and pathological processes, such as tumorigenesis and tumor progression. Obesity is a risk factor for a number of serious health conditions, including breast cancer (BC). However, the underlying mechanisms behind the association between obesity and increased BC incidence and mortality remain unclear. Several studies have reported changes in lncRNA expression due to obesity and BC, independently encouraging further investigation of the relationship between the two in connection with lncRNAs. The present study was designed to first screen for the expression of 29 selected lncRNAs that showed a link to cancer or obesity in the blood of a selected cohort of 6 obese and 6 non-obese patients with BC. The expression levels of significantly expressed lncRNAs, AP001429.1, PCAT6, P5549, P19461 and P3134, were further investigated in a larger cohort of 69 patients with BC (36 obese and 33 non-obese), using reverse transcription-quantitative polymerase chain reaction. Results showed not only that AP001429.1 remained significantly downregulated in the larger cohort (P=0.002), but also that it was associated with several clinicopathological characteristics, such as negative HER2 status, negative E-cadherin expression, negative vascular invasion, negative margin invasion and LCIS. These findings suggest that obesity may have a role in inhibiting AP001429.1 expression, which may serve as a novel potential biomarker and therapeutic target for BC.
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Affiliation(s)
- Hani Choudhry
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Kingdom of Saudi Arabia.,Cancer and Mutagenesis Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah 21589, Kingdom of Saudi Arabia
| | - Mohammed A Hassan
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Kingdom of Saudi Arabia.,Department of Basic Medical Sciences, College of Medicine and Health Sciences, Hadhramout University, Mukalla, Republic of Yemen
| | - Abdulrahman L Al-Malki
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Kingdom of Saudi Arabia
| | - Kaltoom A Al-Sakkaf
- Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah 21589, Kingdom of Saudi Arabia.,Immunology Unit, King Fahd Research Medical Centre, King Abdulaziz University, Jeddah 21589, Kingdom of Saudi Arabia
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11
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Akhavan Attar F, Oloomi M, Irani S, Azizi M, Geranpayeh L. LncRNAs AK058003 and MVIH Overexpression in the Blood Samples of Iranian Breast Cancer Patients. IRANIAN BIOMEDICAL JOURNAL 2021; 25:93-8. [PMID: 33462225 PMCID: PMC7921519 DOI: 10.29252/ibj.25.2.93] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/18/2020] [Accepted: 05/02/2020] [Indexed: 11/24/2022]
Abstract
Background Long non-coding RNAs (LncRNAs) are considered as novel biological regulators and potential cancer biomarkers. LncRNAs microvascular invasion in hepatocellular carcinoma (HCC; microvascular invasion [MVIH]) and AK058003 are associated with MVIH in HCC. In breast cancer (BC), upregulated MVIH and AK058003 expression levels have been shown to promote cell proliferation, though LncRNA-AK058003 acts as a tumor suppressor in HCC. Methods Blood samples were collected from 30 healthy women and 30 female BC patients. RNA was extracted from the blood of both groups, and cDNA was then synthesized. A real-time PCR technique was conducted to measure the expression level of LncRNA-AK058003 and MVIH. Results The expression level of two LncRNAs in the blood samples of BC patients increased significantly compared with healthy individuals. The levels of AK058003 and MVIH were not associated with lymph node metastasis (p = 0.402 and p = 0.39), tumor size (p = 0.76 and p = 0.461), and tumor size; lymph nodes, metastasis stage (TNM; p = 0.574 and p = 0.711), respectively. Conclusion As per our findings, LncRNA-AK058003 could serve as a suitable indicator for low stage of BC. In addition, the increased level of LncRNA-MVIH could be considered as a biomarker for BC, which needs more evaluation in the future.
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Affiliation(s)
- Fatemeh Akhavan Attar
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Mana Oloomi
- Department of Molecular Biology, Pasteur Institute of Iran, Tehran, Iran
| | - Shiva Irani
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Masoumeh Azizi
- Department of Molecular Medicine, Biotechnology Research Center; Pasteur Institute of Iran, Tehran, Iran
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12
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Mondal P, Meeran SM. Long non-coding RNAs in breast cancer metastasis. Noncoding RNA Res 2020; 5:208-218. [PMID: 33294746 PMCID: PMC7689374 DOI: 10.1016/j.ncrna.2020.11.004] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 11/10/2020] [Accepted: 11/10/2020] [Indexed: 12/17/2022] Open
Abstract
Breast cancer is the leading cause of cancer-related death among women. Recurrence of primary tumor and metastasis to distant body parts are major causes of breast cancer-associated mortality. The 5-year survival rate for women with metastatic breast cancer is only 25-30%. Breast cancer metastasis is a series of processes involved with EMT, invasion, loss of cell to cell adhesion, alteration in cell phenotype, extravasation, microenvironment of the tumor, and colonization to the secondary sites. Epigenetic modification is involved in the transformation of the distant stromal cell into a secondary tumor. LncRNAs, are one the key epigenetic modifiers, are the largest endogenous non-coding RNAs with approximate base-pair lengths from 200 nt to 100 kb. LncRNA plays a crucial role in breast cancer metastasis by sponging miRNA, by degrading or silencing specific mRNA, or else by targeting the enzymes and microprocessor subunits involved in the biogenesis of miRNA. LncRNA also alters the expression of several genes involved in breast cancer metastasis and modulating different cell signaling pathways. The goal of this review is to provide a better understanding of the role of lncRNA in the regulation of breast cancer metastasis. We also summarized some of the key lncRNAs that regulate the genes and signaling pathways involved in breast cancer invasion and metastasis.
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Affiliation(s)
- Priya Mondal
- Laboratory of Cancer Epigenetics, Department of Biochemistry, CSIR-Central Food Technological Research Institute, Mysore, 570020, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Syed Musthapa Meeran
- Laboratory of Cancer Epigenetics, Department of Biochemistry, CSIR-Central Food Technological Research Institute, Mysore, 570020, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
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13
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Dobre EG, Dinescu S, Costache M. Connecting the Missing Dots: ncRNAs as Critical Regulators of Therapeutic Susceptibility in Breast Cancer. Cancers (Basel) 2020; 12:E2698. [PMID: 32967267 PMCID: PMC7565380 DOI: 10.3390/cancers12092698] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Revised: 09/10/2020] [Accepted: 09/14/2020] [Indexed: 12/24/2022] Open
Abstract
Whether acquired or de novo, drug resistance remains a significant hurdle in achieving therapeutic success in breast cancer (BC). Thus, there is an urge to find reliable biomarkers that will help in predicting the therapeutic response. Stable and easily accessible molecules such as microRNAs (miRNAs) and long non-coding RNAs (lncRNAs) are regarded as valuable prognostic biomarkers and therapeutic targets since they act as crucial regulators of the various mechanisms involved in BC drug resistance. Here, we reviewed the current literature on ncRNAs as mediators of resistance to systemic therapies in BC. Interestingly, upon integrating data results from individual studies, we concluded that miR-221, miR-222, miR-451, Urothelial Carcinoma Associated 1 (UCA1), and Growth arrest-specific 5 (GAS5) are strong candidates as prognostic biomarkers and therapeutic targets since they are regulating multiple drug resistance phenotypes in BC. However, further research around their clinical implications is needed to validate and integrate them into therapeutic applications. Therefore, we believe that our review may provide relevant evidence for the selection of novel therapeutic targets and prognostic biomarkers for BC and will serve as a foundation for future translational research in the field.
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Affiliation(s)
- Elena-Georgiana Dobre
- AMS Genetic Lab, 030882 Bucharest, Romania;
- Department of Biochemistry and Molecular Biology, University of Bucharest, 050095 Bucharest, Romania;
| | - Sorina Dinescu
- Department of Biochemistry and Molecular Biology, University of Bucharest, 050095 Bucharest, Romania;
- The Research Institute of the University of Bucharest, 050095 Bucharest, Romania
| | - Marieta Costache
- Department of Biochemistry and Molecular Biology, University of Bucharest, 050095 Bucharest, Romania;
- The Research Institute of the University of Bucharest, 050095 Bucharest, Romania
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14
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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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15
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A Comprehensive Exploration of the lncRNA CCAT2: A Pan-Cancer Analysis Based on 33 Cancer Types and 13285 Cases. DISEASE MARKERS 2020; 2020:5354702. [PMID: 32908615 PMCID: PMC7060419 DOI: 10.1155/2020/5354702] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Accepted: 12/31/2019] [Indexed: 12/16/2022]
Abstract
Whether the lncRNA CCAT2 expression level affects the clinical progression and outcome of cancer patients has not yet been fully elucidated. There is still an inconsistent view regarding the correlation between CCAT2 expression and clinicopathological factors, including survival data. Besides, the regulation mechanism of CCAT2 in human cancer is still unclear. Our study analyzed a large number of publication data and TCGA databases to identify the association of CCAT2 expression with clinicopathological factors and to explore the regulatory mechanisms in human cancers. We designed a comprehensive study to determine the expression of CCAT2 in human cancer by designing a meta-analysis of 20 selected studies and the TCGA database, using StataSE 12.0 to explore the relationship between CCAT2 expression and both the prognosis and clinicopathological features of 33 cancer types and 13285 tumor patients. Moreover, we performed GO and KEGG pathway enrichment analyses on potential target genes of CCAT2 collected from GEPIA and LncRNA2Target V2.0. The level of CCAT2 expression in tumor tissues is higher than that in paired normal tissues and is significantly associated with a poor prognosis in cancer patients. Besides, overexpression of CCAT2 was significantly associated with tumor size, clinical stage, and TNM classification. Meanwhile, CCAT2 expression is the highest in stage II of human cancer, followed by stage III. Finally, 111 validated target gene symbols were identified, and GO and KEGG demonstrated that the CCAT2 validation target was significantly enriched in several pathways, including microRNAs in the cancer pathway. In summary, CCAT2 can be a potential biomarker associated with the progression and prognosis of human cancer.
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16
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Ding J, Zhang L, Chen S, Cao H, Xu C, Wang X. lncRNA CCAT2 Enhanced Resistance of Glioma Cells Against Chemodrugs by Disturbing the Normal Function of miR-424. Onco Targets Ther 2020; 13:1431-1445. [PMID: 32110042 PMCID: PMC7034969 DOI: 10.2147/ott.s227831] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Accepted: 11/28/2019] [Indexed: 12/14/2022] Open
Abstract
Background Aggressive metastasis of tumor cells assumed a constructive role in strengthening chemoresistance of tumors, so this investigation was intended to elucidate if lncRNA CCAT2 sponging downstream miR-424 regulated chemotolerance of glioma cells by boosting metastasis of glioma cells. Methods One hundred and twenty-eight pairs of glioma tissues and corresponding adjacent tissues were resected from glioma patients during their operation, and we also purchased a series of glioma cell lines, including U251, U87, A172 and SHG44. Furthermore, pcDNA3.1-CCAT2, si-CCAT2, miR-424 mimic and miR-424 inhibitor were transfected into SHG44 and U251 cell lines, so as to evaluate impacts of CCAT2 and miR-424 on chemosensitivity of the glioma cells. Besides, proliferation, invasion and metastasis of the cells were determined through the implementation of colony formation assay, transwell assay and scratch assay. Results Glioma tissues and cells were monitored with higher CCAT2 expression and lower miR-424 expression than adjacent normal tissues and NHA cell line (P<0.05). Among the glioma cell lines, the SHG44 cell line showed the strongest resistance against teniposide, temozolomide and cisplatin (P<0.05), whereas the U251 cell line was more sensitive to teniposide, temozolomide, vincristine and cisplatin than any other cell line (P<0.05). Besides, pcDNA3.1-CCAT2 and miR-424 inhibitor could enhance tolerance of glioma cell lines against drugs (P<0.05). Moreover, in-vitro transfection of si-CCAT2 and miR-424 mimic could significantly retard proliferation, invasion and migration of SHG44 and U251 cells (P<0.05), and CCAT2 was found to negatively regulate miR-424 expression by sponging it (P<0.05). In addition, CHK1 was deemed as the molecule targeted by upstream miR-424, and its overexpression can changeover the effects of miR-424 mimic on proliferation and metastasis of SHG44 and U251 cells. Conclusion lncRNA CCAT2/miR-424/Chk1 axis might serve as a promising target for improving chemotherapeutic efficacies in glioma treatment.
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Affiliation(s)
- Jun Ding
- Department of Neurosurgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, People's Republic of China
| | - Lin Zhang
- Department of Neurosurgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, People's Republic of China
| | - Shiwen Chen
- Department of Neurosurgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, People's Republic of China
| | - Heli Cao
- Department of Neurosurgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, People's Republic of China
| | - Chen Xu
- Department of Neurosurgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, People's Republic of China
| | - Xuyang Wang
- Department of Neurosurgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, People's Republic of China
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17
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Mahmoudi B, Fayazi J, Roshanfekr H, Sari M, Bakhtiarizadeh MR. Genome-wide identification and characterization of novel long non-coding RNA in Ruminal tissue affected with sub-acute Ruminal acidosis from Holstein cattle. Vet Res Commun 2020; 44:19-27. [PMID: 32043213 DOI: 10.1007/s11259-020-09769-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Accepted: 01/28/2020] [Indexed: 12/12/2022]
Abstract
Sub-acute ruminal acidosis is a type of metabolic disorder in which affected cattle show a considerable depression of rumen pH. This leads to a dramatic decline in productivity and consequent loss of income for many dairy farms. The objective of the present study is to identify and characterize novel long non-coding RNAs (lncRNAs) in Holstein cattle affected by sub-acute ruminal acidosis. Two replicates from six animals were sequenced that bioinformatically analyzed. Results showed 6679 novel lncRNAs among which 12 intergenic lncRNAs showed differential expression (p value ≤0.05). GO and KEGG analysis revealed that calcium signaling and G protein couple-receptor pathways may be involved in regulating metabolic processes during sub-acute ruminal acidosis. Furthermore, other biological processes including transmembrane transport, adult behavior, neuroactive ligand-receptor interaction, GABAergic synapse, cholinergic synapse were significantly enriched. The present data suggest that these differentially expressed lncRNAs may play regulatory roles in modulating biological processes associated with sub-acute ruminal acidosis in cattle rumen.
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Affiliation(s)
- Bizhan Mahmoudi
- Department of Animal science, Agricultural Sciences and Natural Resources University of Khuzestan, Ahvaz, Iran
| | - Jamal Fayazi
- Department of Animal science, Agricultural Sciences and Natural Resources University of Khuzestan, Ahvaz, Iran.
| | - Hedayatollah Roshanfekr
- Department of Animal science, Agricultural Sciences and Natural Resources University of Khuzestan, Ahvaz, Iran
| | - Mohsen Sari
- Department of Animal science, Agricultural Sciences and Natural Resources University of Khuzestan, Ahvaz, Iran
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18
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Tariq A, Hao Q, Sun Q, Singh DK, Jadaliha M, Zhang Y, Chetlangia N, Ma J, Holton SE, Bhargava R, Lal A, Prasanth SG, Prasanth KV. LncRNA-mediated regulation of SOX9 expression in basal subtype breast cancer cells. RNA (NEW YORK, N.Y.) 2020; 26:175-185. [PMID: 31690584 PMCID: PMC6961546 DOI: 10.1261/rna.073254.119] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Accepted: 10/30/2019] [Indexed: 05/08/2023]
Abstract
Triple-negative breast cancer (TNBC) is one of the most aggressive breast cancer (BC) subtypes with a poor prognosis and high recurrence rate. Recent studies have identified vital roles played by several lncRNAs (long noncoding RNAs) in BC pathobiology. Cell type-specific expression of lncRNAs and their potential role in regulating the expression of oncogenic and tumor suppressor genes have made them promising cancer drug targets. By performing a transcriptome screen in an isogenic TNBC/basal subtype BC progression cell line model, we recently reported ∼1800 lncRNAs that display aberrant expression during breast cancer progression. Mechanistic studies on one such nuclear-retained lncRNA, linc02095, reveal that it promotes breast cancer proliferation by facilitating the expression of oncogenic transcription factor, SOX9. Both linc02095 and SOX9 display coregulated expression in BC patients as well in basal subtype BC cell lines. Knockdown of linc02095 results in decreased BC cell proliferation, whereas its overexpression promotes cells proliferation. Linc02095-depleted cells display reduced expression of SOX9 concomitant with reduced RNA polymerase II occupancy at the SOX9 gene body as well as defective SOX9 mRNA export, implying that linc02095 positively regulates SOX9 transcription and mRNA export. Finally, we identify a positive feedback loop in BC cells that controls the expression of both linc02095 and SOX9 Thus, our results unearth tumor-promoting activities of a nuclear lncRNA linc02095 by facilitating the expression of key oncogenic transcription factor in BC.
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Affiliation(s)
- Aamira Tariq
- Department of Biosciences, Comsats Institute of Information Technology, Islamabad 45550, Pakistan
- Department of Cell and Developmental Biology, Cancer Center at Illinois, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - Qinyu Hao
- Department of Cell and Developmental Biology, Cancer Center at Illinois, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - Qinyu Sun
- Department of Cell and Developmental Biology, Cancer Center at Illinois, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - Deepak K Singh
- Department of Cell and Developmental Biology, Cancer Center at Illinois, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - Mahdieh Jadaliha
- Department of Cell and Developmental Biology, Cancer Center at Illinois, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - Yang Zhang
- Computational Biology Department, School of Computer Science, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - Neha Chetlangia
- Department of Cell and Developmental Biology, Cancer Center at Illinois, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - Jian Ma
- Computational Biology Department, School of Computer Science, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - Sarah E Holton
- Department of Bioengineering and Beckman Institute of Advanced Science and Technology, Cancer Center at Illinois, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - Rohit Bhargava
- Department of Bioengineering and Beckman Institute of Advanced Science and Technology, Cancer Center at Illinois, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - Ashish Lal
- Regulatory RNAs and Cancer Section, Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, USA
| | - Supriya G Prasanth
- Department of Cell and Developmental Biology, Cancer Center at Illinois, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - Kannanganattu V Prasanth
- Department of Cell and Developmental Biology, Cancer Center at Illinois, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
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19
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Zhang T, Hu H, Yan G, Wu T, Liu S, Chen W, Ning Y, Lu Z. Long Non-Coding RNA and Breast Cancer. Technol Cancer Res Treat 2020; 18:1533033819843889. [PMID: 30983509 PMCID: PMC6466467 DOI: 10.1177/1533033819843889] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Breast cancer, one of the most common diseases among women, is regarded as a
heterogeneous and complicated disease that remains a major public health concern.
Recently, owing to the development of next-generation sequencing technologies, long
non-coding RNAs have received extensive attention. Numerous studies reveal that long
non-coding RNAs are playing important roles in tumor development. Although the biological
function and molecular mechanisms of long non-coding RNAs remain enigmatic, recent
researchers have demonstrated that an array of long non-coding RNAs express abnormally in
cancers, including breast cancer. Herein, we summarized the latest literature about long
non-coding RNAs in breast cancer, with a particular focus on the multiple molecular roles
of regulatory long non-coding RNAs that regulate cell proliferation, invasion, metastasis,
and apoptosis.
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Affiliation(s)
- Tianzhu Zhang
- 1 Department of Medical Laboratory, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,2 School of Laboratory Medicine, Hubei University of Chinese Medicine, Wuhan, China
| | - Hui Hu
- 1 Department of Medical Laboratory, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ge Yan
- 1 Department of Medical Laboratory, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,2 School of Laboratory Medicine, Hubei University of Chinese Medicine, Wuhan, China
| | - Tangwei Wu
- 1 Department of Medical Laboratory, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Shuiyi Liu
- 1 Department of Medical Laboratory, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,3 Cancer Research Institute of Wuhan, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Weiqun Chen
- 1 Department of Medical Laboratory, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,3 Cancer Research Institute of Wuhan, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,4 Key Laboratory for Molecular Diagnosis of Hubei Province, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yong Ning
- 2 School of Laboratory Medicine, Hubei University of Chinese Medicine, Wuhan, China
| | - Zhongxin Lu
- 1 Department of Medical Laboratory, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,2 School of Laboratory Medicine, Hubei University of Chinese Medicine, Wuhan, China.,3 Cancer Research Institute of Wuhan, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,4 Key Laboratory for Molecular Diagnosis of Hubei Province, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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20
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Roohallah F, Nikyar A, Milani A. The Roles and Diagnostic Potential of Long Non-Coding RNAs in Some Cancers: A Review. JOURNAL OF CLINICAL AND BASIC RESEARCH 2019. [DOI: 10.29252/jcbr.3.4.13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/09/2022] Open
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21
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Moghbeli M. Genetic and molecular biology of breast cancer among Iranian patients. J Transl Med 2019; 17:218. [PMID: 31286981 PMCID: PMC6615213 DOI: 10.1186/s12967-019-1968-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Accepted: 07/04/2019] [Indexed: 02/07/2023] Open
Abstract
Abstract Background, Breast cancer (BC) is one of the leading causes of cancer related deaths in Iran. This high ratio of mortality had a rising trend during the recent years which is probably associated with late diagnosis. Main body Therefore it is critical to define a unique panel of genetic markers for the early detection among our population. In present review we summarized all of the reported significant genetic markers among Iranian BC patients for the first time, which are categorized based on their cellular functions. Conclusions This review paves the way of introducing a unique ethnic specific panel of diagnostic markers among Iranian BC patients. Indeed, this review can also clarify the genetic and molecular bases of BC progression among Iranians.
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Affiliation(s)
- Meysam Moghbeli
- Medical Genetics Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.
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22
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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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23
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Genome-wide identification and characterization of long non-coding RNAs expressed during sheep fetal and postnatal hair follicle development. Sci Rep 2019; 9:8501. [PMID: 31186438 PMCID: PMC6559957 DOI: 10.1038/s41598-019-44600-w] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Accepted: 05/03/2019] [Indexed: 01/09/2023] Open
Abstract
Long non-coding RNAs (lncRNAs), >200 nt in length, are transcribed from mammalian genomes. They play important regulatory roles in various biological processes; However, the function and expression profile of lncRNAs involved in the development of hair follicles in the fetus, have been relatively under-explored area. To investigate the specific role of lncRNAs and mRNAs that regulate hair follicle development, we herein performed a comprehensive study on the lncRNA and mRNA expression profiles of sheep at multiple embryonic days (E65, E85, E105, and E135) and six lambs aged one week (D7) and one month (D30) using RNA-seq technology. The number of genes (471 lncRNAs and 12,812 mRNAs) differentially expressed and potential targets of differentially expressed lncRNAs were predicted. Differentially expressed lncRNAs were grouped into 10 clusters based on their expression pattern by K-means clustering. Moreover, Gene Ontology (GO) annotation and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analyses showed that some differentially expressed mRNAs, such as DKK1, DSG4, FOXE1, Hoxc13, SFRP1, SFRP2, and Wnt10A overlapped with lncRNAs targets, and enriched in important hair follicle developmental pathways, including Wnt, TNF, and MAPK signaling pathways. In addition, 9 differentially expressed lncRNAs and 4 differentially expressed mRNAs were validated using quantitative real-time PCR (qRT-PCR). This study helps enrich the Ovis lncRNA databases and provides a comprehensive lncRNA transcriptome profile of fetal and postnatal skin of sheep. Additionally, it provides a foundation for further experiments on the role of lncRNAs in the regulation of hair growth in sheep.
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24
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Abstract
Several challenges present themselves when discussing current approaches to the prevention or treatment of pancreatic cancer. Up to 45% of the risk of pancreatic cancer is attributed to unknown causes, making effective prevention programs difficult to design. The most common type of pancreatic cancer, pancreatic ductal adenocarcinoma (PDAC), is generally diagnosed at a late stage, leading to a poor prognosis and 5-year survival estimate. PDAC tumors are heterogeneous, leading to many identified cell subtypes within one patient’s primary tumor. This explains why there is a high frequency of tumors that are resistant to standard treatments, leading to high relapse rates. This review will discuss how epigenetic technologies and epigenome-wide association studies have been used to address some of these challenges and the future promises these approaches hold.
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Affiliation(s)
- Rahul R Singh
- Department of Biological Sciences, North Dakota State University, Fargo, ND 58102, USA; (R.R.S.); (K.M.R.)
| | - Katie M Reindl
- Department of Biological Sciences, North Dakota State University, Fargo, ND 58102, USA; (R.R.S.); (K.M.R.)
| | - Rick J Jansen
- Department of Public Health, North Dakota State University, Fargo, ND 58102, USA
- Biostatistics Core Facility, North Dakota State University, Fargo, ND 58102, USA
- Center for Immunization Research and Education, North Dakota State University, Fargo, ND 58102, USA
- Genomics and Bioinformatics Program, North Dakota State University, Fargo, ND 58102, USA
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25
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Do H, Kim W. Roles of Oncogenic Long Non-coding RNAs in Cancer Development. Genomics Inform 2018; 16:e18. [PMID: 30602079 PMCID: PMC6440676 DOI: 10.5808/gi.2018.16.4.e18] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Accepted: 11/29/2018] [Indexed: 02/07/2023] Open
Abstract
Long non-coding RNAs (lncRNAs) are classified as RNAs that are longer than 200 nucleotides and cannot be translated into protein. Several studies have demonstrated that lncRNAs are directly or indirectly involved in a variety of biological processes and in the regulation of gene expression. In addition, lncRNAs have important roles in many diseases including cancer. It has been shown that abnormal expression of lncRNAs is observed in several human solid tumors. Several studies have shown that many lncRNAs can function as oncogenes in cancer development through the induction of cell cycle progression, cell proliferation and invasion, anti-apoptosis, and metastasis. Oncogenic lncRNAs have the potential to become promising biomarkers and might be potent prognostic targets in cancer therapy. However, the biological and molecular mechanisms of lncRNA involvement in tumorigenesis have not yet been fully elucidated. This review summarizes studies on the regulatory and functional roles of oncogenic lncRNAs in the development and progression of various types of cancer.
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Affiliation(s)
- Hyunhee Do
- Department of Biology Education, Korea National University of Education, Cheongju 28173, Korea
| | - Wanyeon Kim
- Department of Biology Education, Korea National University of Education, Cheongju 28173, Korea
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26
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Klinge CM. Non-Coding RNAs in Breast Cancer: Intracellular and Intercellular Communication. Noncoding RNA 2018; 4:E40. [PMID: 30545127 PMCID: PMC6316884 DOI: 10.3390/ncrna4040040] [Citation(s) in RCA: 94] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Revised: 11/29/2018] [Accepted: 12/04/2018] [Indexed: 02/07/2023] Open
Abstract
Non-coding RNAs (ncRNAs) are regulators of intracellular and intercellular signaling in breast cancer. ncRNAs modulate intracellular signaling to control diverse cellular processes, including levels and activity of estrogen receptor α (ERα), proliferation, invasion, migration, apoptosis, and stemness. In addition, ncRNAs can be packaged into exosomes to provide intercellular communication by the transmission of microRNAs (miRNAs) and long non-coding RNAs (lncRNAs) to cells locally or systemically. This review provides an overview of the biogenesis and roles of ncRNAs: small nucleolar RNA (snRNA), circular RNAs (circRNAs), PIWI-interacting RNAs (piRNAs), miRNAs, and lncRNAs in breast cancer. Since more is known about the miRNAs and lncRNAs that are expressed in breast tumors, their established targets as oncogenic drivers and tumor suppressors will be reviewed. The focus is on miRNAs and lncRNAs identified in breast tumors, since a number of ncRNAs identified in breast cancer cells are not dysregulated in breast tumors. The identity and putative function of selected lncRNAs increased: nuclear paraspeckle assembly transcript 1 (NEAT1), metastasis-associated lung adenocarcinoma transcript 1 (MALAT1), steroid receptor RNA activator 1 (SRA1), colon cancer associated transcript 2 (CCAT2), colorectal neoplasia differentially expressed (CRNDE), myocardial infarction associated transcript (MIAT), and long intergenic non-protein coding RNA, Regulator of Reprogramming (LINC-ROR); and decreased levels of maternally-expressed 3 (MEG3) in breast tumors have been observed as well. miRNAs and lncRNAs are considered targets of therapeutic intervention in breast cancer, but further work is needed to bring the promise of regulating their activities to clinical use.
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Affiliation(s)
- Carolyn M Klinge
- Department of Biochemistry & Molecular Genetics, University of Louisville School of Medicine, Louisville, KY 40292, USA.
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27
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LncRNA AWPPH promotes the growth of triple-negative breast cancer by up-regulating frizzled homolog 7 (FZD7). Biosci Rep 2018; 38:BSR20181223. [PMID: 30333256 PMCID: PMC6259013 DOI: 10.1042/bsr20181223] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2018] [Revised: 09/24/2018] [Accepted: 09/28/2018] [Indexed: 12/14/2022] Open
Abstract
Background: LncRNA AWPPH is a recently identified critical player in the development of several types of human malignancies, our study aimed to investigate the role of AWPPH in triple-negative breast cancer. Methods: In the present study, expression of AWPPH in tumor tissues and adjacent healthy tissues of patients with triple-negative breast cancer as well as in plasma of both patients and healthy people was detected by qRT-PCR. Application potentials of AWPPH in the diagnosis and prognosis of triple-negative breast cancer were evaluated by ROC curve analysis and survival curve analysis, respectively. AWPPH expression vectors and frizzled homolog 7 (FZD7) siRNAs were transfected into cells of human breast cancer cell lines. Expression of FZD7 was detected by Western blot, and cell proliferation was detected using CCK-8 kit. Results: We observed that AWPPH was significantly up-regulated in tumor tissues than in paired adjacent healthy tissues of patients. Plasma levels of AWPPH were higher in patients than in controls. AWPPH overexpression promoted cancer cell proliferation and up-regulated FZD7 expression. FZD7 siRNA silencing inhibited cancer cell proliferation but did not significantly affect AWPPH expression. Compared with cells with AWPPH overexpression alone, cells with both FZD7 siRNA silencing and AWPPH overexpression showed significantly reduced proliferation ability. Conclusions: We conclude that LncRNA AWPPH may promote the growth of triple-negative breast cancer by up-regulating FZD7.
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28
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Hu XY, Hou PF, Li TT, Quan HY, Li ML, Lin T, Liu JJ, Bai J, Zheng JN. The roles of Wnt/β-catenin signaling pathway related lncRNAs in cancer. Int J Biol Sci 2018; 14:2003-2011. [PMID: 30585264 PMCID: PMC6299370 DOI: 10.7150/ijbs.27977] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Accepted: 10/07/2018] [Indexed: 02/06/2023] Open
Abstract
Long noncoding RNAs (lncRNAs), with length of more than 200 nucleotides, are not translated into proteins but involved in multiple diverse diseases, especially tumorigenesis. The dysregulation of lncRNAs greatly contributes to the progression of various tumors through specific signaling pathways, including Wnt/β-catenin signaling pathway, which is associated with malignant features of tumors. The interactions between lncRNAs, which have specific expression characteristics in diverse cancer tissues, and Wnt/β-catenin signaling pathway, exhibit potential as novel biomarkers and therapeutic targets. In this review, we aim to present research findings on the roles of Wnt pathway-related lncRNAs and their effects on Wnt/β-catenin signaling to regulate tumorigenesis in different cancer types. Results may be used as basis to develop or improve strategies for treatment of different carcinomas.
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Affiliation(s)
- Xiao-Yi Hu
- Cancer Institute, Xuzhou Medical University, Xuzhou 221002, Jiangsu Province, China.,Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Xuzhou Medical University, Xuzhou 221002, Jiangsu Province, China.,Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China
| | - Ping-Fu Hou
- Cancer Institute, Xuzhou Medical University, Xuzhou 221002, Jiangsu Province, China.,Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Xuzhou Medical University, Xuzhou 221002, Jiangsu Province, China
| | - Teng-Teng Li
- Department of Gastrointestinal Surgery, the Affiliated Hospital of Xuzhou Medical University, Xuzhou 221002, Jiangsu Province, China
| | - Hao-Yu Quan
- Cancer Institute, Xuzhou Medical University, Xuzhou 221002, Jiangsu Province, China.,Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Xuzhou Medical University, Xuzhou 221002, Jiangsu Province, China
| | - Min-Le Li
- Cancer Institute, Xuzhou Medical University, Xuzhou 221002, Jiangsu Province, China.,Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Xuzhou Medical University, Xuzhou 221002, Jiangsu Province, China
| | - Tian Lin
- Cancer Institute, Xuzhou Medical University, Xuzhou 221002, Jiangsu Province, China.,Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Xuzhou Medical University, Xuzhou 221002, Jiangsu Province, China
| | - Jin-Jin Liu
- Cancer Institute, Xuzhou Medical University, Xuzhou 221002, Jiangsu Province, China.,Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Xuzhou Medical University, Xuzhou 221002, Jiangsu Province, China
| | - Jin Bai
- Cancer Institute, Xuzhou Medical University, Xuzhou 221002, Jiangsu Province, China.,Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Xuzhou Medical University, Xuzhou 221002, Jiangsu Province, China
| | - Jun-Nian Zheng
- Cancer Institute, Xuzhou Medical University, Xuzhou 221002, Jiangsu Province, China.,Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Xuzhou Medical University, Xuzhou 221002, Jiangsu Province, China.,Center of Clinical Oncology, Affiliated Hospital of Xuzhou Medical University, Xuzhou 221002, Jiangsu Province, China
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29
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Zhou S, He Y, Yang S, Hu J, Zhang Q, Chen W, Xu H, Zhang H, Zhong S, Zhao J, Tang J. The regulatory roles of lncRNAs in the process of breast cancer invasion and metastasis. Biosci Rep 2018; 38:BSR20180772. [PMID: 30217944 PMCID: PMC6165837 DOI: 10.1042/bsr20180772] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 09/03/2018] [Accepted: 09/11/2018] [Indexed: 12/28/2022] Open
Abstract
Breast cancer (BC) is the most common cancer and principal cause of death among females worldwide. Invasion and metastasis are major causes which influence the survival and prognosis of BC. Therefore, to understand the molecule mechanism underlying invasion and metastasis is paramount for developing strategies to improve survival and prognosis in BC patients. Recent studies have reported that long non-coding RNAs (lncRNAs) play critical roles in the regulation of BC invasion and metastasis through a variety of molecule mechanisms that endow cells with an aggressive phenotype. In this article, we focused on the function of lncRNAs on BC invasion and metastasis through participating in epithelial-to-mesenchymal transition, strengthening cancer stem cells generation, serving as competing endogenous lncRNAs, influencing multiple signaling pathways as well as regulating expressions of invasion-metastasis related factors, including cells adhesion molecules, extracellular matrix, and matrix metallo-proteinases. The published work described has provided a better understanding of the mechanisms underpinning the contribution of lncRNAs to BC invasion and metastasis, which may lay the foundation for the development of new strategies to prevent BC invasion and metastasis.
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Affiliation(s)
- Siying Zhou
- The First Clinical Medical College, Nanjing University of Chinese Medicine, Xianlin Road 138, Nanjing 210023, P.R. China
| | - Yunjie He
- The First Clinical School of Nanjing Medical University, Nanjing 210029, P.R. China
| | - Sujin Yang
- The First Clinical School of Nanjing Medical University, Nanjing 210029, P.R. China
| | - Jiahua Hu
- The Fourth Clinical School of Nanjing Medical University, Nanjing 210029, P.R. China
- Center of Clinical Laboratory Science, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & The Affiliated Cancer Hospital of Nanjing Medical University, Baiziting 42, Nanjing 210029, P.R. China
| | - Qian Zhang
- The First Clinical School of Nanjing Medical University, Nanjing 210029, P.R. China
| | - Wei Chen
- Department of Head and Neck Surgery, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & The Affiliated Cancer Hospital of Nanjing Medical University, Baiziting 42, Nanjing 210029, P.R. China
| | - Hanzi Xu
- Department of Radiotherapy, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & The Affiliated Cancer Hospital of Nanjing Medical University, Baiziting 42, Nanjing 210029, P.R. China
| | - Heda Zhang
- Department of General Surgery, School of Medicine, Southeast University, 87 Ding Jia Qiao, Nanjing 210009, P.R. China
| | - Shanliang Zhong
- Center of Clinical Laboratory Science, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & The Affiliated Cancer Hospital of Nanjing Medical University, Baiziting 42, Nanjing 210029, P.R. China
| | - Jianhua Zhao
- Center of Clinical Laboratory Science, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & The Affiliated Cancer Hospital of Nanjing Medical University, Baiziting 42, Nanjing 210029, P.R. China
| | - Jinhai Tang
- Department of General Surgery, the First Affiliated Hospital with Nanjing Medical University, Nanjing 210029, P.R. China
- The First Clinical Medical College, Nanjing University of Chinese Medicine, Xianlin Road 138, Nanjing 210023, P.R. China
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30
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Hu S, Wang H, Yan D, Lu W, Gao P, Lou W, Kong X. Loss of miR-16 contributes to tumor progression by activation of tousled-like kinase 1 in oral squamous cell carcinoma. Cell Cycle 2018; 17:2284-2295. [PMID: 30252587 DOI: 10.1080/15384101.2018.1526601] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
A different expression signature of miRNA in oral squamous cell carcinoma (OSCC) has been validated. MicroRNA-16 (miR-16) as one of the distinctly dysregulated miRNAs in OSCC, its functional role in progression of OSCC remains not fully clear. Herein, miR-16 expression was significantly lower in OSCC tissues compared to that in adjacent normal tissues (n = 131). A lower level of miR-16 was found to be associated with poor prognosis on a cohort of 131 patients with OSCC, and on an extensive public data (457) from TCGA database. Additionally, expression of TLK1 was significantly higher in OSCC tissues compared to that in adjacent normal tissues, which is negatively correlated with miR-16 expression in OSCC. Bioinformatics analyses exhibited that TLK1 is a potential downstream effector of miR-16 by directly targeting the 3'-untranslated regions (3'-UTR) of mRNA. Forced expression of miR-16 in OSCC cell lines inhibits cell proliferation in vitro, and tumor growth in vivo by inhibition of TLK1. Mechanistically, downregulation of TLK1 by miR-16 enhances higher level of DNA damage leading to a significant increase of G2/M arrest in SCC9 cells. And, overexpression of TLK1 substantially reduces DNA damage and G2/M arrest by activation of TLK1-dependent cell cycle checkpoint response. To conclude, miR-16 is downregulated in OSCC and serves as tumor suppressor in OSCC progression by targeting TLK1, which has potential to be the novel therapeutic targets and diagnostic biomarkers for OSCC.
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Affiliation(s)
- Shousen Hu
- a Department of Otolaryngology Head and Neck Surgery , The First Affiliated Hospital of Zhengzhou University , Zhengzhou , Henan , China
| | - Honghan Wang
- b Department of Head and Neck Surgery, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine , Central South University , Changsha , Hunan , China
| | - Dan Yan
- c Department of Pharmacy , The First Affiliated Hospital of Zhengzhou University , Zhengzhou , China.,d Henan Key Laboratory of Precision Clinical Pharmacy , Zhengzhou University , Zhengzhou , China
| | - Wuhao Lu
- a Department of Otolaryngology Head and Neck Surgery , The First Affiliated Hospital of Zhengzhou University , Zhengzhou , Henan , China
| | - Pei Gao
- a Department of Otolaryngology Head and Neck Surgery , The First Affiliated Hospital of Zhengzhou University , Zhengzhou , Henan , China
| | - Weihua Lou
- a Department of Otolaryngology Head and Neck Surgery , The First Affiliated Hospital of Zhengzhou University , Zhengzhou , Henan , China
| | - Xiangzhen Kong
- c Department of Pharmacy , The First Affiliated Hospital of Zhengzhou University , Zhengzhou , China.,d Henan Key Laboratory of Precision Clinical Pharmacy , Zhengzhou University , Zhengzhou , China
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31
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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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32
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Tian T, Wang M, Lin S, Guo Y, Dai Z, Liu K, Yang P, Dai C, Zhu Y, Zheng Y, Xu P, Zhu W, Dai Z. The Impact of lncRNA Dysregulation on Clinicopathology and Survival of Breast Cancer: A Systematic Review and Meta-analysis. MOLECULAR THERAPY. NUCLEIC ACIDS 2018; 12:359-369. [PMID: 30195774 PMCID: PMC6037885 DOI: 10.1016/j.omtn.2018.05.018] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Revised: 05/20/2018] [Accepted: 05/20/2018] [Indexed: 12/18/2022]
Abstract
Dysregulation of multiple long non-coding RNAs (lncRNAs) was reported to play major roles in breast cancer (BC). Here we aimed to collect most of the relevant literature to assess the prognostic value of lncRNAs in BC. To this end, we systematically searched PubMed, Embase, Web of Science, Chinese National Knowledge Infrastructure (CNKI), and Wanfang to identify published articles on the associations of lncRNAs with clinicopathology and/or survival of BC. Via this searching, we identified 70 articles involving 9,307 BC patients and regarding 48 lncRNAs. The expression of 41 lncRNAs was related to one or more clinicopathological parameters of BC, including tumor size; lymph node metastasis; histological grade; TNM stage; and estrogen receptor (ER), progesterone receptor (PR), and human epidermal growth factor receptor 2 (HER-2) statuses (p < 0.05). Dysregulation of 28 lncRNAs was associated with overall survival, and abnormal expression of 9 lncRNAs was linked to disease-free survival. Furthermore, the expression level of 3 lncRNAs was correlated with metastasis-free survival, 3 lncRNAs with relapse-free survival, and 3 lncRNAs with progression-free survival. Our analysis showed that multiple lncRNAs were significantly associated with BC clinicopathology and survival. A large-scale study is needed to verify the prognostic value of these lncRNAs in BC.
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Affiliation(s)
- Tian Tian
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, Shaanxi Province, China
| | - Meng Wang
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, Shaanxi Province, China
| | - Shuai Lin
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, Shaanxi Province, China
| | - Yan Guo
- School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, Shaanxi Province, China
| | - Zhiming Dai
- Department of Anesthesia, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, Shaanxi Province, China
| | - Kang Liu
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, Shaanxi Province, China
| | - Pengtao Yang
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, Shaanxi Province, China
| | - Cong Dai
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, Shaanxi Province, China
| | - Yuyao Zhu
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, Shaanxi Province, China
| | - Yi Zheng
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, Shaanxi Province, China
| | - Peng Xu
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, Shaanxi Province, China
| | - Wenge Zhu
- Department of Biochemistry and Molecular Medicine, The George Washington University Medical School, Washington, DC 20052, USA.
| | - Zhijun Dai
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, Shaanxi Province, China.
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33
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Richard JLC, Eichhorn PJA. Deciphering the roles of lncRNAs in breast development and disease. Oncotarget 2018; 9:20179-20212. [PMID: 29732012 PMCID: PMC5929455 DOI: 10.18632/oncotarget.24591] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2017] [Accepted: 02/21/2018] [Indexed: 02/06/2023] Open
Abstract
Breast cancer is the second leading cause of cancer related deaths in women. It is therefore important to understand the mechanisms underlying breast cancer development as well as raises the need for enhanced, non-invasive strategies for novel prognostic and diagnostic methods. The emergence of long non-coding RNAs (lncRNAs) as potential key players in neoplastic disease has received considerable attention over the past few years. This relatively new class of molecular regulators has been shown from ongoing research to act as critical players for key biological processes. Deregulated expression levels of lncRNAs have been observed in a number of cancers including breast cancer. Furthermore, lncRNAs have been linked to breast cancer initiation, progression, metastases and to limit sensitivity to certain targeted therapeutics. In this review we provide an update on the lncRNAs associated with breast cancer and mammary gland development and illustrate the versatility of such lncRNAs in gene control, differentiation and development both in normal physiological conditions and in diseased states. We also highlight the therapeutic and diagnostic potential of lncRNAs in cancer.
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Affiliation(s)
- John Lalith Charles Richard
- Cancer Science Institute of Singapore, National University of Singapore, 117599, Singapore
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, 117597, Singapore
- Current Address: Genome Institute of Singapore, Agency for Science Technology and Research, 138672, Singapore
| | - Pieter Johan Adam Eichhorn
- Cancer Science Institute of Singapore, National University of Singapore, 117599, Singapore
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, 117597, Singapore
- School of Pharmacy, Curtin University, Perth, 6845, Australia
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Shah MY, Ferracin M, Pileczki V, Chen B, Redis R, Fabris L, Zhang X, Ivan C, Shimizu M, Rodriguez-Aguayo C, Dragomir M, Van Roosbroeck K, Almeida MI, Ciccone M, Nedelcu D, Cortez MA, Manshouri T, Calin S, Muftuoglu M, Banerjee PP, Badiwi MH, Parker-Thornburg J, Multani A, Welsh JW, Estecio MR, Ling H, Tomuleasa C, Dima D, Yang H, Alvarez H, You MJ, Radovich M, Shpall E, Fabbri M, Rezvani K, Girnita L, Berindan-Neagoe I, Maitra A, Verstovsek S, Fodde R, Bueso-Ramos C, Gagea M, Manero GG, Calin GA. Cancer-associated rs6983267 SNP and its accompanying long noncoding RNA CCAT2 induce myeloid malignancies via unique SNP-specific RNA mutations. Genome Res 2018; 28:432-447. [PMID: 29567676 PMCID: PMC5880235 DOI: 10.1101/gr.225128.117] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Accepted: 02/28/2018] [Indexed: 01/11/2023]
Abstract
The cancer-risk-associated rs6983267 single nucleotide polymorphism (SNP) and the accompanying long noncoding RNA CCAT2 in the highly amplified 8q24.21 region have been implicated in cancer predisposition, although causality has not been established. Here, using allele-specific CCAT2 transgenic mice, we demonstrate that CCAT2 overexpression leads to spontaneous myeloid malignancies. We further identified that CCAT2 is overexpressed in bone marrow and peripheral blood of myelodysplastic/myeloproliferative neoplasms (MDS/MPN) patients. CCAT2 induces global deregulation of gene expression by down-regulating EZH2 in vitro and in vivo in an allele-specific manner. We also identified a novel non-APOBEC, non-ADAR, RNA editing at the SNP locus in MDS/MPN patients and CCAT2-transgenic mice. The RNA transcribed from the SNP locus in malignant hematopoietic cells have different allelic composition from the corresponding genomic DNA, a phenomenon rarely observed in normal cells. Our findings provide fundamental insights into the functional role of rs6983267 SNP and CCAT2 in myeloid malignancies.
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Affiliation(s)
- Maitri Y Shah
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, Texas 77054, USA
| | - Manuela Ferracin
- Department of Experimental, Diagnostic and Specialty Medicine (DIMES), University of Bologna, 40126 Bologna, Italy
| | - Valentina Pileczki
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, Texas 77054, USA.,The Research Center for Functional Genomics, Biomedicine and Translational Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, 400012 Cluj Napoca, Romania
| | - Baoqing Chen
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, Texas 77054, USA
| | - Roxana Redis
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, Texas 77054, USA
| | - Linda Fabris
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, Texas 77054, USA
| | - Xinna Zhang
- Center for RNA Interference and Non-coding RNAs, The University of Texas MD Anderson Cancer Center, Houston, Texas 77054, USA
| | - Cristina Ivan
- Center for RNA Interference and Non-coding RNAs, The University of Texas MD Anderson Cancer Center, Houston, Texas 77054, USA
| | - Masayoshi Shimizu
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, Texas 77054, USA
| | - Cristian Rodriguez-Aguayo
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, Texas 77054, USA
| | - Mihnea Dragomir
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, Texas 77054, USA
| | - Katrien Van Roosbroeck
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, Texas 77054, USA
| | - Maria Ines Almeida
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, Texas 77054, USA.,Institute for Research and Innovation in Health (I3S), and Institute of Biomedical Engineering (INEB), University of Porto, 4200-135, Porto, Portugal
| | - Maria Ciccone
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, Texas 77054, USA.,Hematology Section, Azienda Ospedaliero-Universitaria Arcispedale S. Anna, 44124, Ferrara, Italy
| | - Daniela Nedelcu
- Department of Oncology-Pathology, Karolinska Institute, Cancer Center Karolinska, SE-171 77 Stockholm, Sweden
| | - Maria Angelica Cortez
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas 77054, USA
| | - Taghi Manshouri
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, Texas 77054, USA
| | - Steliana Calin
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, Texas 77054, USA
| | - Muharrem Muftuoglu
- Department of Stem Cell Transplantation and Cellular Therapy, The University of Texas MD Anderson Cancer Center, Houston, Texas 77054, USA
| | - Pinaki P Banerjee
- Department of Stem Cell Transplantation and Cellular Therapy, The University of Texas MD Anderson Cancer Center, Houston, Texas 77054, USA
| | - Mustafa H Badiwi
- Department of Stem Cell Transplantation and Cellular Therapy, The University of Texas MD Anderson Cancer Center, Houston, Texas 77054, USA
| | - Jan Parker-Thornburg
- Department of Genetics, The University of Texas MD Anderson Cancer Center, Houston, Texas 77054, USA
| | - Asha Multani
- Department of Genetics, The University of Texas MD Anderson Cancer Center, Houston, Texas 77054, USA
| | - James William Welsh
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas 77054, USA
| | - Marcos Roberto Estecio
- Department of Epigenetics and Molecular Carcinogenesis, The University of Texas MD Anderson Cancer Center, Houston, Texas 77054, USA
| | - Hui Ling
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, Texas 77054, USA
| | - Ciprian Tomuleasa
- The Research Center for Functional Genomics, Biomedicine and Translational Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, 400012 Cluj Napoca, Romania.,Department of Hematology, The Oncology Institute Ion Chiricuta, 400015 Cluj Napoca, Romania
| | - Delia Dima
- Department of Hematology, The Oncology Institute Ion Chiricuta, 400015 Cluj Napoca, Romania
| | - Hui Yang
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, Texas 77054, USA
| | - Hector Alvarez
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, Texas 77054, USA
| | - M James You
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, Texas 77054, USA
| | - Milan Radovich
- Center for Computational Biology and Bioinformatics, Indiana University School of Medicine, Indianapolis, Indiana 46202, USA
| | - Elizabeth Shpall
- Department of Stem Cell Transplantation and Cellular Therapy, The University of Texas MD Anderson Cancer Center, Houston, Texas 77054, USA
| | - Muller Fabbri
- Departments of Pediatrics and Molecular Microbiology and Immunology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Children's Center for Cancer and Blood Diseases and The Saban Research Institute, Children's Hospital Los Angeles, Los Angeles, California 90027, USA
| | - Katy Rezvani
- Department of Stem Cell Transplantation and Cellular Therapy, The University of Texas MD Anderson Cancer Center, Houston, Texas 77054, USA
| | - Leonard Girnita
- Department of Oncology-Pathology, Karolinska Institute, Cancer Center Karolinska, SE-171 77 Stockholm, Sweden
| | - Ioana Berindan-Neagoe
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, Texas 77054, USA.,The Research Center for Functional Genomics, Biomedicine and Translational Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, 400012 Cluj Napoca, Romania
| | - Anirban Maitra
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, Texas 77054, USA
| | - Srdan Verstovsek
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, Texas 77054, USA
| | - Riccardo Fodde
- Department of Pathology, Erasmus MC Cancer Institute, Erasmus University Medical Center, 3015 CE Rotterdam, The Netherlands
| | - Carlos Bueso-Ramos
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, Texas 77054, USA
| | - Mihai Gagea
- Department of Veterinary Medicine and Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas 77054, USA
| | - Guillermo Garcia Manero
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, Texas 77054, USA
| | - George A Calin
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, Texas 77054, USA.,Center for RNA Interference and Non-coding RNAs, The University of Texas MD Anderson Cancer Center, Houston, Texas 77054, USA
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Sun XJ, Wang Q, Guo B, Liu XY, Wang B. Identification of skin-related lncRNAs as potential biomarkers that involved in Wnt pathways in keloids. Oncotarget 2018; 8:34236-34244. [PMID: 28404955 PMCID: PMC5470963 DOI: 10.18632/oncotarget.15880] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Accepted: 01/24/2017] [Indexed: 12/19/2022] Open
Abstract
The long non-coding RNAs (lncRNAs) regulating encoding transcripts/genes involved in Wnt signalling pathway in keloids is largely unclear. We used a pathway-focused lncRNA microarray to detect the differentiated expression profiles of both lncRNAs and genes involved in Wnt pathway, thus a total of 116 Wnt-targeted genes and 69 Wnt-related lncRNAs aberrantly expressed in keloids were initially identified. A stepwise bioinformatics was further performed to find skin-related lncRNA/gene pairs in Wnt pathway in keloids. Firstly, an lncRNA/gene co-expression network with clustered functional modules was constructed; simultaneously, 114 Wnt-genes regarding to dermis were online enriched using Phenotype Enrichment. Secondly, 17 skin-related keloid-aberrant Wnt-genes were acquired by overlapping the 114 skin-related Wnt-genes with the 116 keloid-aberrant Wnt-genes. Thirdly, after co-expression coefficient of each lncRNA/gene profile being ranked respectively, 11 top co-expressed lncRNAs characterized with the highest co-expression coefficients to the 17 genes were identified. Fourthly, seven of the 11 top co-expressed lncRNAs exhibiting array-detected aberrant expression in keloids, together with their 12 most interactive Wnt-genes, were selected to undergo in-pair intracellularly quantitative PCR validation in keloids. As a result, four lncRNAs including CACNA1G-AS1, HOXA11-AS, LINC00312 and RP11-91I11.1 with their six paired Wnt-genes undergoing both array-and-qPCR as well as lncRNA-and-gene double validation were finally identified as skin-related lncRNA/gene pairs that involved in Wnt signalling pathway in keloids. In conclusion, in-depth exploration on these easily-accessible lncRNAs in keloids might aid to find the novel target on how to maintain highly recurrent tumours benign via Wnt-involved network regulation.
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Affiliation(s)
- Xiao-Jie Sun
- Department of Plastic and Reconstruction Surgery, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Qiang Wang
- Department of Obstetrics and Gynecology, Second Hospital of Jilin University, Changchun, China
| | - Baofeng Guo
- Department of Plastic and Reconstruction Surgery, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Xian-Ying Liu
- Department of medication, Second Hospital of Jilin University, Changchun, China
| | - Bing Wang
- Department of Plastic and Reconstruction Surgery, China-Japan Union Hospital of Jilin University, Changchun, China
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36
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Arun G, Diermeier SD, Spector DL. Therapeutic Targeting of Long Non-Coding RNAs in Cancer. Trends Mol Med 2018; 24:257-277. [PMID: 29449148 PMCID: PMC5840027 DOI: 10.1016/j.molmed.2018.01.001] [Citation(s) in RCA: 425] [Impact Index Per Article: 70.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Revised: 01/09/2018] [Accepted: 01/14/2018] [Indexed: 02/07/2023]
Abstract
Long non-coding RNAs (lncRNAs) represent a significant population of the human transcriptome. Many lncRNAs exhibit cell- and/or tissue/tumor-specific expression, making them excellent candidates for therapeutic applications. In this review we discuss examples of lncRNAs that demonstrate the diversity of their function in various cancer types. We also discuss recent advances in nucleic acid drug development with a focus on oligonucleotide-based therapies as a novel approach to inhibit tumor progression. The increased success rates of nucleic acid therapeutics provide an outstanding opportunity to explore lncRNAs as viable therapeutic targets to combat various aspects of cancer progression.
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Affiliation(s)
- Gayatri Arun
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA; These authors contributed equally
| | - Sarah D Diermeier
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA; These authors contributed equally
| | - David L Spector
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA.
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37
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Guo H, Hu G, Yang Q, Zhang P, Kuang W, Zhu X, Wu L. Knockdown of long non-coding RNA CCAT2 suppressed proliferation and migration of glioma cells. Oncotarget 2018; 7:81806-81814. [PMID: 27833083 PMCID: PMC5348431 DOI: 10.18632/oncotarget.13242] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Accepted: 10/14/2016] [Indexed: 01/02/2023] Open
Abstract
Long non-coding RNA colon cancer-associated transcript 2 (CCAT2) is commonly investigated in a number of cancers. However, little is known of its expression and biological function in glioma biology. In the current study, we used quantitative real-time PCR (qRT-PCR) to determine the expression of CCAT2 in glioma tissues. We found that expression of CCAT2 was up-regulated in glioma tissues and significantly correlated with the advanced tumor stage (III/IV). Functional assays in vitro and in vivo demonstrated that knockdown of CCAT2 could inhibit proliferation, cell cycle progression and migration of glioma cells. Further analysis indicated the effect of CCAT2 knockdown on glioma cell phenotype through inhibiting Wnt/β-catenin signal pathway activity. Thus, our study provides evidence that CCAT2 may function as a potential biomarker for glioma.
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Affiliation(s)
- Hua Guo
- Department of Neurosurgery, The Second Affiliated Hospital of Nanchang University, Nanchang 330006, China
| | - Guowen Hu
- Department of Neurosurgery, The Second Affiliated Hospital of Nanchang University, Nanchang 330006, China
| | - Qing Yang
- Department of Respiratory Medicine, The Second Affiliated Hospital of Nanchang University, Nanchang 330006, China
| | - Pei Zhang
- Department of Neurosurgery, The Second Affiliated Hospital of Nanchang University, Nanchang 330006, China
| | - Wei Kuang
- Department of Neurosurgery, The Second Affiliated Hospital of Nanchang University, Nanchang 330006, China
| | - Xingen Zhu
- Department of Neurosurgery, The Second Affiliated Hospital of Nanchang University, Nanchang 330006, China
| | - Lei Wu
- Department of Neurosurgery, The Second Affiliated Hospital of Nanchang University, Nanchang 330006, China
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38
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Yang G, Shen T, Yi X, Zhang Z, Tang C, Wang L, Zhou Y, Zhou W. Crosstalk between long non-coding RNAs and Wnt/β-catenin signalling in cancer. J Cell Mol Med 2018; 22:2062-2070. [PMID: 29392884 PMCID: PMC5867104 DOI: 10.1111/jcmm.13522] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2017] [Accepted: 12/06/2017] [Indexed: 12/18/2022] Open
Abstract
Long non-coding RNAs (lncRNAs) are non-protein-coding transcripts in the human genome which perform crucial functions in diverse biological processes. The abnormal expression of some lncRNAs has been found in tumorigenesis, development and therapy resistance of cancers. They may act as oncogenes or tumour suppressors and can be used as diagnostic or prognostic markers, prompting their therapeutic potentials in cancer treatments. Studies have indicated that many lncRNAs are involved in the regulation of several signal pathways, including Wnt/β-catenin signalling pathway, which has been reported to play a significant role in regulating embryogenesis, cell proliferation and controlling tumour biology. Emerging evidences have suggested that lncRNAs can interact with several components of the Wnt/β-catenin signalling pathway to regulate the expression of Wnt target genes in cancer. Moreover, the expression of lncRNAs can also be influenced by the pathway. Nevertheless, Wnt/β-catenin signalling pathway-related lncRNAs and their interactions in cancer are not systematically analysed before. Considering these, this review emphasized the associations between lncRNAs and Wnt/β-catenin signalling pathway in cancer initiation, progression and their therapeutic influence. We also provided an overview on characteristics of lncRNAs and Wnt/β-catenin signalling pathway and discussed their functions in tumour biology. Finally, targeting lncRNAs or/and molecules associated with the Wnt/β-catenin signalling pathway may be a feasible therapeutic method in the future.
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Affiliation(s)
- Gang Yang
- Department of Urology, Jinling Hospital, Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Tianyi Shen
- Department of Urology, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, Jiangsu Province, China
| | - Xiaoming Yi
- Department of Urology, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, Jiangsu Province, China
| | - Zhengyu Zhang
- Department of Urology, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, Jiangsu Province, China
| | - Chaopeng Tang
- Department of Urology, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, Jiangsu Province, China
| | - Longxin Wang
- Department of Urology, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, Jiangsu Province, China
| | - Yulin Zhou
- Department of Urology, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, Jiangsu Province, China
| | - Wenquan Zhou
- Department of Urology, Jinling Hospital, Nanjing Medical University, Nanjing, Jiangsu Province, China.,Department of Urology, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, Jiangsu Province, China
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39
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Fu D, Zhang Y, Cui H. Long noncoding RNA CCAT2 is activated by E2F1 and exerts oncogenic properties by interacting with PTTG1 in pituitary adenomas. Am J Cancer Res 2018; 8:245-255. [PMID: 29511595 PMCID: PMC5835692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Accepted: 12/04/2017] [Indexed: 06/08/2023] Open
Abstract
Pituitary adenomas, arising from the pituitary gland cells, are one of the most frequent tumors found in the sella region. However, the molecular mechanisms involved in the carcinogenesis and progression of pituitary adenomas is still not understood in detail. Long noncoding RNA (lncRNA) colon cancer-associated transcript 2 (CCAT2), a newly identified lncRNA, has been reported to be abnormally expressed in some cancers. In the present study, we found that CCAT2 was significantly upregulated in pituitary adenomas tissues. Elevated CCAT2 expression was correlated with poor prognosis in patients with pituitary adenomas. Moreover, CCAT2 expression was activated by E2F1. Loss-of-function and gain-of-function assays showed that CCAT2 positively regulated pituitary adenoma cell proliferation, migration, and invasion. Further investigation demonstrated that CCAT2 interacted with PTTG1, and promoted its stability. Furthermore, CCAT2 affected the expression of downstream genes regulated by PTTG1, including SOX2, DLK1, MMP2, and MMP13. Cumulatively, CCAT2 functions as an oncogene in pituitary adenomas and its overexpression contributes to pituitary adenoma carcinogenesis and progression.
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Affiliation(s)
- Dongxia Fu
- The Second Department of Endocrinology, Cangzhou Central Hospital, Hebei Medical UniversityCangzhou, China
| | - Yunna Zhang
- The Second Department of Endocrinology, Cangzhou Central Hospital, Hebei Medical UniversityCangzhou, China
| | - Haibin Cui
- The First Department of Oncology Surgery, Cangzhou Central Hospital, Hebei Medical UniversityCangzhou, China
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40
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Functional and prognostic significance of long non-coding RNA MALAT1 as a metastasis driver in ER negative lymph node negative breast cancer. Oncotarget 2018; 7:40418-40436. [PMID: 27250026 PMCID: PMC5130017 DOI: 10.18632/oncotarget.9622] [Citation(s) in RCA: 119] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Accepted: 05/09/2016] [Indexed: 12/15/2022] Open
Abstract
MALAT1 (metastasis associated lung adenocarcinoma transcript1) is a conserved long non-coding RNA, known to regulate gene expression by modulating transcription and post-transcriptional pre-mRNA processing of a large number of genes. MALAT1 expression is deregulated in various tumors, including breast cancer. However, the significance of such abnormal expression is yet to be fully understood. In this study, we demonstrate that regulation of aggressive breast cancer cell traits by MALAT1 is not predicted solely based on an elevated expression level but is context specific. By performing loss- and gain-of-function studies, both under in vitro and in vivo conditions, we demonstrate that MALAT1 facilitates cell proliferation, tumor progression and metastasis of triple-negative breast cancer (TNBC) cells despite having a comparatively lower expression level than ER or HER2-positive breast cancer cells. Furthermore, MALAT1 regulates the expression of several cancer metastasis-related genes, but displays molecular subtype specific correlations with such genes. Assessment of the prognostic significance of MALAT1 in human breast cancer (n=1992) revealed elevated MALAT1 expression was associated with decreased disease-specific survival in ER negative, lymph node negative patients of the HER2 and TNBC molecular subtypes. Multivariable analysis confirmed MALAT1 to have independent prognostic significance in the TNBC lymph node negative patient subset (HR=2.64, 95%CI 1.35 − 5.16, p=0.005). We propose that the functional significance of MALAT1 as a metastasis driver and its potential use as a prognostic marker is most promising for those patients diagnosed with ER negative, lymph node negative breast cancer who might otherwise mistakenly be stratified to have low recurrence risk.
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41
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Cai Y, Li X, Shen P, Zhang D. CCAT2 is an oncogenic long non-coding RNA in pancreatic ductal adenocarcinoma. Biol Res 2018; 51:1. [PMID: 29298720 PMCID: PMC5751927 DOI: 10.1186/s40659-017-0149-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Accepted: 12/15/2017] [Indexed: 12/21/2022] Open
Abstract
Background Pancreatic ductal adenocarcinoma (PDAC) is highly aggressive with poor prognosis. Long non-coding RNAs (lncRNAs), a group of non-coding RNAs, play important roles in the progression of PDAC. This study aimed to investigate the potential involvement of lncRNA CCAT2 in PDAC tumorigenesis. Methods Expression of CCAT2 was detected by quantitative real-time PCR (qRT-PCR) in 80 human PDAC tissues and three PDAC cell lines. The effects of CCAT2 silencing in PANC-1 cells on cell proliferation and invasion were studied using MTT assay and transwell assay, respectively. The effect of CCAT2 silencing on tumorigenesis was assessed by PANC-1 xenograft in vivo. Using si-KRAS, the role of KRAS to regulate CCAT2 was evaluated by qRT-PCR and luciferase reporter assay. The involvement of MEK/ERK and PI3K/AKT signaling in CCAT2 regulation was investigated by pathway inhibitors PD98059 and LY294002, respectively. Results CCAT2 was significantly elevated in high-grade PDAC tissues and higher CCAT2 expression was correlated with lower survival rate in PDAC patients. CCAT2 was up-regulated in PDAC cell lines, as compared with normal pancreatic cells. Silencing of CCAT2 inhibited cell proliferation and invasion in PANC-1 cells in vitro, and attenuated tumorigenesis of PANC-1 xenograft in vivo. Furthermore, CCAT2 was regulated by KRAS through MEK/ERK signaling pathway. Conclusions CCAT2 is an oncogenic lncRNA in PDAC likely regulated by the KRAS-MEK/ERK pathway. It could be a potential diagnostic biomarker and therapeutic target for PDAC.
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Affiliation(s)
- Yi Cai
- Department of Geriatric Oncology, The General Hospital of Chinese People's Liberation Army, 28 Fuxing Road, Haidian District, Beijing, 100853, People's Republic of China
| | - Xiaomei Li
- Department of Geriatric Oncology, The General Hospital of Chinese People's Liberation Army, 28 Fuxing Road, Haidian District, Beijing, 100853, People's Republic of China
| | - Peng Shen
- The Fourth Division of Department of Internal Medicine, Huailai County Hospital, Fuqianddong Rd, Huailai, Zhangjiakou, Beihe, 075400, People's Republic of China
| | - Dong Zhang
- Department of Geriatric Oncology, The General Hospital of Chinese People's Liberation Army, 28 Fuxing Road, Haidian District, Beijing, 100853, People's Republic of China.
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42
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Latgé G, Poulet C, Bours V, Josse C, Jerusalem G. Natural Antisense Transcripts: Molecular Mechanisms and Implications in Breast Cancers. Int J Mol Sci 2018; 19:ijms19010123. [PMID: 29301303 PMCID: PMC5796072 DOI: 10.3390/ijms19010123] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Revised: 12/07/2017] [Accepted: 12/29/2017] [Indexed: 12/13/2022] Open
Abstract
Natural antisense transcripts are RNA sequences that can be transcribed from both DNA strands at the same locus but in the opposite direction from the gene transcript. Because strand-specific high-throughput sequencing of the antisense transcriptome has only been available for less than a decade, many natural antisense transcripts were first described as long non-coding RNAs. Although the precise biological roles of natural antisense transcripts are not known yet, an increasing number of studies report their implication in gene expression regulation. Their expression levels are altered in many physiological and pathological conditions, including breast cancers. Among the potential clinical utilities of the natural antisense transcripts, the non-coding|coding transcript pairs are of high interest for treatment. Indeed, these pairs can be targeted by antisense oligonucleotides to specifically tune the expression of the coding-gene. Here, we describe the current knowledge about natural antisense transcripts, their varying molecular mechanisms as gene expression regulators, and their potential as prognostic or predictive biomarkers in breast cancers.
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Affiliation(s)
- Guillaume Latgé
- Laboratory of Human Genetics, GIGA-Institute, University of Liège, 4500 Liège, Belgium.
| | - Christophe Poulet
- Laboratory of Human Genetics, GIGA-Institute, University of Liège, 4500 Liège, Belgium.
| | - Vincent Bours
- Laboratory of Human Genetics, GIGA-Institute, University of Liège, 4500 Liège, Belgium.
- Center of Genetics, University Hospital (CHU), 4500 Liège, Belgium.
| | - Claire Josse
- Laboratory of Human Genetics, GIGA-Institute, University of Liège, 4500 Liège, Belgium.
- Department of Medical Oncology, University Hospital (CHU), 4500 Liège, Belgium.
- Laboratory of Medical Oncology, GIGA-Institute, University of Liège, 4500 Liège, Belgium.
| | - Guy Jerusalem
- Department of Medical Oncology, University Hospital (CHU), 4500 Liège, Belgium.
- Laboratory of Medical Oncology, GIGA-Institute, University of Liège, 4500 Liège, Belgium.
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43
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Wang B, Liu M, Zhuang R, Jiang J, Gao J, Wang H, Chen H, Zhang Z, Kuang Y, Li P. Long non-coding RNA CCAT2 promotes epithelial-mesenchymal transition involving Wnt/β-catenin pathway in epithelial ovarian carcinoma cells. Oncol Lett 2017; 15:3369-3375. [PMID: 29435081 DOI: 10.3892/ol.2017.7669] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Accepted: 11/20/2017] [Indexed: 12/13/2022] Open
Abstract
Long non-coding RNA colon cancer-associated transcript 2 (CCAT2) is dysregulated in a variety of types of human cancer. However, the role of CCAT2 in epithelial ovarian carcinoma (EOC) remains largely unknown. The aim of this study is to investigate the effect of CCAT2 on epithelial-mesenchymal transition (EMT) and related molecular mechanisms in epithelial ovarian cancer cells. In the current paper, we found that CCAT2 was significantly upregulated in EOC SKOV3, A2780 and HO8910 cell lines compared with the normal ovarian epithelial HUM-CELL-0088 cell line. Functional assays demonstrated that the knockdown of CCAT2 inhibited migration and invasion of EOC cells in vitro. Moreover, our results showed that silencing CCAT2 inhibited EMT by the upregulation of epithelial cadherin and downregulation of neural cadherin, zinc finger protein SNAI and Twist-related protein 1 in SKOV3 and A2780 cell lines. But, that was reversed by the treatment with lithium chloride (LiCl), by which the canonical Wnt/β-catenin pathway could be activated. In addition, we further investigated the role of CCAT2 in the modulation of Wnt/β-catenin signaling pathway. Our results revealed that knockdown of CCAT2 inhibited the expression of β-catenin and the activity of T-cell factor/lymphoid enhancer factor, acting as a key transcription factor of Wnt signaling pathway. Collectively, these results indicate that CCAT2 may promote EMT, at least partly through Wnt/β-catenin signaling pathway in EOC cells. Thus, CCAT2 might play a critical role in EOC progression and serve as a valuable target for the treatment of ovarian cancer.
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Affiliation(s)
- Beidi Wang
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China
| | - Meimei Liu
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China
| | - Rujin Zhuang
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China
| | - Jing Jiang
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China
| | - Jiayin Gao
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China
| | - Hao Wang
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China
| | - He Chen
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China
| | - Zongfeng Zhang
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China
| | - Ye Kuang
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China
| | - Peiling Li
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China
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Liu J, Song Z, Feng C, Lu Y, Zhou Y, Lin Y, Dong C. The long non-coding RNA SUMO1P3 facilitates breast cancer progression by negatively regulating miR-320a. Am J Transl Res 2017; 9:5594-5602. [PMID: 29312511 PMCID: PMC5752909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Accepted: 10/21/2017] [Indexed: 06/07/2023]
Abstract
Although the long non-coding RNA (lncRNA) SUMO1P3, small ubiquitin-like modifier 1 pseudogene 3, has been shown to play a role in human cancer, the biological function and mechanism of SUMO1P3 in breast cancer remained unclear. In this study, we showed that SUMO1P3 expression was higher in breast cancer tissues when compared to adjacent normal tissues and we found that high levels of SUMO1P3 expression associated significantly with tumor progression and poor survival of breast cancer patients. Moreover, we found that knockdown of SUMO1P3 suppressed proliferation, migration, and invasion of breast cancer cells. Bioinformatics analysis and luciferase reporter assays confirmed that SUMO1P3 binds to miR-320a, which has been identified as a tumor suppressor in various cancers, including breast cancer. We also confirmed that the tumor-promoting effects of SUMO1P3 in breast cancer are partly mediated by negative regulation of miR-320a. Our data indicates that SUMO1P3 functions as an oncogenic lncRNA in breast cancer and may serve as a novel diagnostic and biological target for breast cancer diagnosis and treatment.
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Affiliation(s)
- Jie Liu
- Department of Oncology, Shanghai East Hospital, Tongji University School of MedicineShanghai, People's Republic of China
| | - Zhiwang Song
- Department of Oncology, Shanghai East Hospital, Tongji University School of MedicineShanghai, People's Republic of China
| | - Chan Feng
- Department of Oncology, Shanghai East Hospital, Tongji University School of MedicineShanghai, People's Republic of China
| | - Yonglin Lu
- Department of Oncology, Shanghai East Hospital, Tongji University School of MedicineShanghai, People's Republic of China
| | - Yu Zhou
- Department of Oncology, Shanghai East Hospital, Tongji University School of MedicineShanghai, People's Republic of China
| | - Yun Lin
- Department of Oncology, Shanghai East Hospital, Tongji University School of MedicineShanghai, People's Republic of China
| | - Chunyan Dong
- Department of Oncology, Shanghai East Hospital, Tongji University School of MedicineShanghai, People's Republic of China
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Wang BD, Jiang J, Liu MM, Zhuang RJ, Wang H, Li PL. Silencing CCAT2 inhibited proliferation and invasion of epithelial ovarian carcinoma cells by regulating Wnt signaling pathway. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2017; 10:11771-11778. [PMID: 31966540 PMCID: PMC6966034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Accepted: 10/24/2017] [Indexed: 06/10/2023]
Abstract
Long non-coding RNA CCAT2 (colon cancer-associated transcript 2) is dysregulated in varieties of human tumors. However, the role of CCAT2 in epithelial ovarian carcinoma (EOC) is not yet known clearly. The aim of this study is to investigate the effects of CCAT2 on proliferation and invasion of EOC cells and the potential mechanisms by which CCAT2 functions. In the present paper, we found that knockdown of CCAT2 impaired cell proliferation and invasion in vitro. Furthermore, we also studied the role of CCAT2 in the modulation of Wnt/β-catenin signaling pathway. Our results showed that knockdown of CCAT2 inhibited the expression of β-catenin and the activity of TCF/LEF (T-cell factor/lymphoid enhancer factor) acting as a key transcription factor of Wnt/β-catenin signaling pathway. In addition, we found that silencing CCAT2 down-regulated the expression of c-MYC and MMP-7. But, that was reversed by the treatment with LiCl (lithium chloride) which could activate canonical Wnt/β-catenin signaling pathway. Taken together, these results indicate that CCAT2 may promote ovarian cancer progression, at least partly, through Wnt/β-catenin signaling pathway. Thus, CCAT2 might represent a novel therapeutic target for ovarian cancer.
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Affiliation(s)
- Bei-Di Wang
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Harbin Medical University Harbin, Heilongjiang, People's Republic of China
| | - Jing Jiang
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Harbin Medical University Harbin, Heilongjiang, People's Republic of China
| | - Mei-Mei Liu
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Harbin Medical University Harbin, Heilongjiang, People's Republic of China
| | - Ru-Jin Zhuang
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Harbin Medical University Harbin, Heilongjiang, People's Republic of China
| | - Hao Wang
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Harbin Medical University Harbin, Heilongjiang, People's Republic of China
| | - Pei-Ling Li
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Harbin Medical University Harbin, Heilongjiang, People's Republic of China
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Ong MS, Cai W, Yuan Y, Leong HC, Tan TZ, Mohammad A, You ML, Arfuso F, Goh BC, Warrier S, Sethi G, Tolwinski NS, Lobie PE, Yap CT, Hooi SC, Huang RY, Kumar AP. 'Lnc'-ing Wnt in female reproductive cancers: therapeutic potential of long non-coding RNAs in Wnt signalling. Br J Pharmacol 2017; 174:4684-4700. [PMID: 28736855 PMCID: PMC5727316 DOI: 10.1111/bph.13958] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Revised: 06/30/2017] [Accepted: 07/17/2017] [Indexed: 02/06/2023] Open
Abstract
Recent discoveries in the non-coding genome have challenged the original central dogma of molecular biology, as non-coding RNAs and related processes have been found to be important in regulating gene expression. MicroRNAs and long non-coding RNAs (lncRNAs) are among those that have gained attention recently in human diseases, including cancer, with the involvement of many more non-coding RNAs (ncRNAs) waiting to be discovered. ncRNAs are a group of ribonucleic acids transcribed from regions of the human genome, which do not become translated into proteins, despite having essential roles in cellular physiology. Deregulation of ncRNA expression and function has been observed in cancer pathogenesis. Recently, the roles of a group of ncRNA known as lncRNA have gained attention in cancer, with increasing reports of their oncogenic involvement. Female reproductive cancers remain a leading cause of death in the female population, accounting for almost a third of all female cancer deaths in 2016. The Wnt signalling pathway is one of the most important oncogenic signalling pathways which is hyperactivated in cancers, including female reproductive cancers. The extension of ncRNA research into their mechanistic roles in human cancers has also led to novel reported roles of ncRNAs in the Wnt pathway and Wnt-mediated oncogenesis. This review aims to provide a critical summary of the respective roles and cellular functions of Wnt-associated lncRNAs in female reproductive cancers and explores the potential of circulating cell-free lncRNAs as diagnostic markers and lncRNAs as therapeutic targets. LINKED ARTICLES This article is part of a themed section on WNT Signalling: Mechanisms and Therapeutic Opportunities. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v174.24/issuetoc.
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Affiliation(s)
- Mei S Ong
- Departments of Physiology, Yong Loo Lin School of MedicineNational University of SingaporeSingapore
| | - Wanpei Cai
- Departments of Pharmacology, Yong Loo Lin School of MedicineNational University of SingaporeSingapore
- Cancer Science Institute of SingaporeNational University of SingaporeSingapore
| | - Yi Yuan
- Cancer Science Institute of SingaporeNational University of SingaporeSingapore
| | - Hin C Leong
- Departments of Pharmacology, Yong Loo Lin School of MedicineNational University of SingaporeSingapore
- Cancer Science Institute of SingaporeNational University of SingaporeSingapore
| | - Tuan Z Tan
- Cancer Science Institute of SingaporeNational University of SingaporeSingapore
| | - Asad Mohammad
- Cancer Science Institute of SingaporeNational University of SingaporeSingapore
| | - Ming L You
- Cancer Science Institute of SingaporeNational University of SingaporeSingapore
| | - Frank Arfuso
- Stem Cell and Cancer Biology Laboratory, School of Biomedical Sciences, Curtin Health Innovation Research InstituteCurtin UniversityPerthWAAustralia
| | - Boon C Goh
- Departments of Pharmacology, Yong Loo Lin School of MedicineNational University of SingaporeSingapore
- Cancer Science Institute of SingaporeNational University of SingaporeSingapore
- National University Cancer InstituteNational University Health SystemSingapore
- Department of Haematology‐OncologyNational University Health SystemSingapore
| | - Sudha Warrier
- Division of Cancer Stem Cells and Cardiovascular Regeneration, Manipal Institute of Regenerative MedicineManipal UniversityBangaloreIndia
- School of Biomedical Sciences, Curtin Health Innovation Research InstituteCurtin UniversityPerthWAAustralia
| | - Gautam Sethi
- Departments of Pharmacology, Yong Loo Lin School of MedicineNational University of SingaporeSingapore
- School of Biomedical Sciences, Curtin Health Innovation Research InstituteCurtin UniversityPerthWAAustralia
| | - Nicholas S Tolwinski
- Division of ScienceYale‐NUS CollegeSingapore
- Department of Biological ScienceNational University of SingaporeSingapore
| | - Peter E Lobie
- Departments of Pharmacology, Yong Loo Lin School of MedicineNational University of SingaporeSingapore
- Departments of Anatomy, Yong Loo Lin School of MedicineNational University of SingaporeSingapore
- Tsinghua Berkeley Shenzhen Institute and Division of Life Science and HealthTsinghua University Graduate SchoolShenzhenChina
| | - Celestial T Yap
- Departments of Physiology, Yong Loo Lin School of MedicineNational University of SingaporeSingapore
- National University Cancer InstituteNational University Health SystemSingapore
| | - Shing C Hooi
- Departments of Physiology, Yong Loo Lin School of MedicineNational University of SingaporeSingapore
| | - Ruby Y Huang
- Departments of Anatomy, Yong Loo Lin School of MedicineNational University of SingaporeSingapore
- Cancer Science Institute of SingaporeNational University of SingaporeSingapore
- National University Cancer InstituteNational University Health SystemSingapore
- Department of Obstetrics and GynaecologyNational University HospitalSingapore
| | - Alan P Kumar
- Departments of Pharmacology, Yong Loo Lin School of MedicineNational University of SingaporeSingapore
- Cancer Science Institute of SingaporeNational University of SingaporeSingapore
- National University Cancer InstituteNational University Health SystemSingapore
- Division of Cancer Stem Cells and Cardiovascular Regeneration, Manipal Institute of Regenerative MedicineManipal UniversityBangaloreIndia
- Curtin Medical School, Faculty of Health ScienceCurtin UniversityPerthWAAustralia
- Department of Biological SciencesUniversity of North TexasDentonTXUSA
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Chen KL, Li L, Wang YR, Li CM, Badri TM, Wang GL. Long noncoding RNA and mRNA profiling in MDA-MB-231 cells following RNAi-mediated knockdown of SIRT7. Onco Targets Ther 2017; 10:5115-5128. [PMID: 29123410 PMCID: PMC5661475 DOI: 10.2147/ott.s149048] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Breast cancer is one of the most common malignant cancers among women and a major clinical obstacle. Although studies have reported the abnormal expression of SIRT7 in breast cancer, whether the function of SIRT7 regulates the expression of long noncoding RNAs (lncRNAs) in breast cancer remains unknown. We aimed to determine the differential expressions of mRNAs and lncRNAs associated with SIRT7 and understand the regulatory mechanism of SIRT7 in breast cancer. RNA sequencing was performed to explore the transcriptome in MDA-MB-231 cells after SIRT7 depletion, and a total of 50,634 different transcripts were identified. In comparison with the negative control, siSIRT7 groups showed 240 differentially expressed mRNAs and 26 differentially expressed lncRNAs. Gene ontology analysis revealed that the differentially expressed mRNAs mainly regulated DNA replication, CXCR chemokine receptor binding, and maturation of large subunit rRNA from tricistronic rRNA transcript, nucleoplasm, mitochondrion, and NAD+ ADP-ribosyltransferase activity. Kyoto Encyclopedia of Genes and Genomes analysis showed that the differentially expressed mRNAs were mainly involved in pathways associated with MAPK signaling pathway, tumor necrosis factor signaling pathway, hepatitis B, and cancer. Moreover, the target genes of the differentially expressed lncRNAs mainly regulated the carboxylic acid metabolic processes and were involved in glycolysis pathway. The mRNA-lncRNA coexpression network comprised 186 mRNAs and 23 lncRNAs. Our results provide essential data regarding differentially expressed lncRNAs and mRNAs after the depletion of SIRT7 in breast cancer cells, which may be useful to elucidate the role of SIRT7 in breast cancer development.
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Affiliation(s)
- Kun-Lin Chen
- Animal Genetics, Breeding and Reproduction Department, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, People's Republic of China
| | - Lian Li
- Animal Genetics, Breeding and Reproduction Department, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, People's Republic of China
| | - Yi-Ru Wang
- Animal Genetics, Breeding and Reproduction Department, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, People's Republic of China
| | - Cheng-Min Li
- Animal Genetics, Breeding and Reproduction Department, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, People's Republic of China
| | - Tarig Mohammed Badri
- Animal Genetics, Breeding and Reproduction Department, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, People's Republic of China
| | - Gen-Lin Wang
- Animal Genetics, Breeding and Reproduction Department, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, People's Republic of China
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Yu Y, Nangia-Makker P, Farhana L, Majumdar APN. A novel mechanism of lncRNA and miRNA interaction: CCAT2 regulates miR-145 expression by suppressing its maturation process in colon cancer cells. Mol Cancer 2017; 16:155. [PMID: 28964256 PMCID: PMC5622467 DOI: 10.1186/s12943-017-0725-5] [Citation(s) in RCA: 147] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Accepted: 09/20/2017] [Indexed: 11/10/2022] Open
Abstract
Background Although both long and micro RNAs are emerging as important functional components in colorectal cancer (CRC) progression and metastasis, the mechanism of their interaction remains poorly understood. CCAT2 (Colon cancer-associated transcript-2), a long noncoding RNA (lncRNA), has been reported to be over-expressed in CRC and is found to promote tumor growth. miRNAs, a class of naturally occurring short RNAs negatively control the expression of target genes by cleaving mRNA or through translation repression. Recently, we reported that miR-145 and miR-21 cooperate to regulate colon cancer stem cell (CSC) proliferation and differentiation. Considering that CCAT2 is mainly located in the nucleus and miRNA maturation process begins in the nucleus, we hypothesize that CCAT2 selectively blocks miR-145 maturation process, resulting in decreased mature miR-145 affecting colon CSC proliferation and differentiation. Methods The levels of CCAT2 were manipulated by transfection of CCAT2 expression plasmid or knockdown by siRNA or by CRISPR/Cas9. Quantitative RT-PCR was performed to examine the expression of CCAT2 and pri-, pre- and mature miR-145/21. Fluorescence in situ hybridization (FISH) was used to visualize CCAT2 in the cells. In vitro processing of pri-miRNA-145 was performed using T7 RNA polymerase and recombinant human Dicer. Results We have observed that modulated expression of CCAT2 regulates the expression of miR-145 in colon cancer HCT-116 and HT-29 cells. Knockout of CCAT2 increases miR-145 and negatively regulates miR-21 in HCT-116 cells, impairs proliferation and differentiation. In contrast, stable up-regulation of CCAT2 decreases mature miR-145 and increases the expression of several CSC markers in colon cancer cells. We have also observed that CCAT2 is enriched in the nucleus and correlates with the expression of pre-miR-145 but not pre-miR-21 in HCT-116 cells. These results indicate CCAT2 selectively blocks miR-145 maturation by inhibiting pre-miR-145 export to cytoplasm. Further, we revealed that CCAT2 blocks cleavage of pre-miR-145 by Dicer in vitro. Conclusions Our results identify CCAT2 as a negative regulator of miRNA-145 biogenesis, and expose a novel mechanism of lncRNA-miRNA crosstalk. Electronic supplementary material The online version of this article (10.1186/s12943-017-0725-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Yingjie Yu
- Department of Veterans Affairs Medical Center, 4646 John R, Detroit, MI, 48201, USA. .,Departments of Internal Medicine, Wayne State University, Detroit, MI, 48201, USA.
| | - Pratima Nangia-Makker
- Department of Veterans Affairs Medical Center, 4646 John R, Detroit, MI, 48201, USA.,Karmanos Cancer Institute, Detroit, MI, 48201, USA.,Departments of Internal Medicine, Wayne State University, Detroit, MI, 48201, USA
| | - Lulu Farhana
- Department of Veterans Affairs Medical Center, 4646 John R, Detroit, MI, 48201, USA.,Departments of Internal Medicine, Wayne State University, Detroit, MI, 48201, USA
| | - Adhip P N Majumdar
- Department of Veterans Affairs Medical Center, 4646 John R, Detroit, MI, 48201, USA. .,Karmanos Cancer Institute, Detroit, MI, 48201, USA. .,Departments of Internal Medicine, Wayne State University, Detroit, MI, 48201, USA.
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49
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Wang D, Chen Z, Xu H, He A, Liu Y, Huang W. Long noncoding RNA CCAT2 as a novel biomaker of metastasis and prognosis in human cancer: a meta-analysis. Oncotarget 2017; 8:75664-75674. [PMID: 29088900 PMCID: PMC5650455 DOI: 10.18632/oncotarget.18161] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Accepted: 03/16/2017] [Indexed: 02/05/2023] Open
Abstract
Colon cancer-associated transcript2 (CCAT2), a long noncoding RNA (LncRNA), has been found to function as an oncogene in various cancers. However, the clinical value of CCAT2 in cancers remains unclear. Therefore, we performed this meta-analysis to investigate the association between CCAT2 level and metastasis & prognosis in malignant tumors. The meta analysis was performed by using a systematic search in PubMed, Web of Science, and Cochrane Library from inception to NOV 17, 2016. According to the inclusion and exclusion criteria,9 studies with 1084 patients were included in the meta-analysis.The result showed that overexpression of CCAT2 is positively correlated with lymph node metastasis (Odds ratio,OR=3.57, 95 % confidence interval(CI): 1.79-7.13, p<0.001) in a random-effects model (I2=71%, p=0.008) and distant metastasis(OR=7.68, 95 % CI: 3. 29-17.96, p<0.001) in a random-effects model (I2=41.9%, p=0.16).Likewise,we also found that high CCAT2 expression could predict unfavourable overall survival with pooled hazard ratio (HR) of 2.23 (95 % CI 1.68-2.96, p<0.00001) by a random-effects model (I2=37.5%, p=0.143) and poor metastasis-free survival in cancer patients (HR= 2.08, 95%CI:1.37-3.18 p=0.001) by a fixed-effects model (I2=0.0%, p=0.807). In conclusion,CCAT2 might be served as a novel molecular marker for predicting metastasis and prognosis in various human-cancers.
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Affiliation(s)
- Dailian Wang
- Key Laboratory of Medical Reprogramming Technology, Shenzhen Second People’s Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, Guangdong, China
- Guangzhou Medical University, Guangzhou, Guangdong ,China
| | - Zhicong Chen
- Key Laboratory of Medical Reprogramming Technology, Shenzhen Second People’s Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, Guangdong, China
- Shantou University Medical College, Shantou, Guangdong, China
| | - Haidan Xu
- Key Laboratory of Medical Reprogramming Technology, Shenzhen Second People’s Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, Guangdong, China
| | - Anbang He
- Key Laboratory of Medical Reprogramming Technology, Shenzhen Second People’s Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, Guangdong, China
- Anhui Medical University, Hefei, Anhui, China
| | - Yuchen Liu
- Key Laboratory of Medical Reprogramming Technology, Shenzhen Second People’s Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, Guangdong, China
| | - Weiren Huang
- Key Laboratory of Medical Reprogramming Technology, Shenzhen Second People’s Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, Guangdong, China
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Liu J, Liu L, Wan JX, Song Y. Long noncoding RNA SNHG20 promotes gastric cancer progression by inhibiting p21 expression and regulating the GSK-3β/ β-catenin signaling pathway. Oncotarget 2017; 8:80700-80708. [PMID: 29113337 PMCID: PMC5655232 DOI: 10.18632/oncotarget.20959] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2017] [Accepted: 08/24/2017] [Indexed: 12/27/2022] Open
Abstract
Recent studies have indicated that long non-coding RNAs (lncRNAs) play important regulatory roles in tumor development and progression. However, the contribution of small nucleolar RNA host gene 20 (SNHG20) to gastric cancer development remains largely unknown. The aim of the study is to investigate the functional significance of SNHG20 involved in gastric cancer (GC) progression. In the study, our results demonstrated that the expression levels of SNHG20 were remarkably up-regulated in GC cells. Functionally, SNHG20 promoted the GC MKN45 and BGC-823 cells proliferation and invasion. Furthermore, knockdown of SNHG20 significantly inhibited the epithelial-mesenchymal transition (EMT) in MKN45 and BGC-823 cells, whereas, the overexpression of SNHG20 had the promoting effects. Moreover, we found that overexpression of SNHG20 in MKN45 and BGC-823 cells significantly inhibited the expression of E-cadherin and p21 via binding to EZH2 and regulated the GSK-3β/β-catenin signaling pathway. Thus, the results showed that SNHG20 acted as an oncogene in GC and targeting SNHG20 may serve as a therapeutic target for GC.
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Affiliation(s)
- Jie Liu
- Department of Intensive Care Unit, Renmin Hospital, Hubei University of Medicine, Shiyan, Hubei, China
| | - Lanyu Liu
- Department of Gynecology and Obstetrics, Weifang Hospital of Maternal and Child Health, Weifang, Shandong Province, China
| | - Jin-Xiang Wan
- Department of Medical Ultrasonics, Huai'an Second People's Hospital, The Affiliated Huai'an Hospital of Xuzhou Medical University, Huai'an, China
| | - Ying Song
- Department of Outpatient, People's Hospital of Zoucheng, Zoucheng, China
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