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Matboli M, Shafei AE, Ali MA, El-Din Ahmed TS, Naser M, Abdel-Rahman T, Anber N, Ali M. Role of extracellular LncRNA-SNHG14/miRNA-3940-5p/NAP12 mRNA in colorectal cancer. Arch Physiol Biochem 2021; 127:479-485. [PMID: 31397210 DOI: 10.1080/13813455.2019.1650070] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND We aim to identify and analyze the expression of dyregulated RNAs in colorectal cancer (CRC). METHODS We selected a panel of RNAs specific to CRC composed of Nucleosome Assembly Protein 1 Like 2 (NAP1L2) mRNA, LNCRNA SNHG14 small nucleolar RNA host gene 14 (LNCRNA SNHG14) and homo sapiens microRNA-3940-5p(hsa-miRNA-3940-5p) from genetic and epigenetic databases. Validation of the chosen RNAs was achieved by real time quantitative PCR in sera of patients with CRC, versus controls groups (benign lesions and healthy individual). RESULTS We found that LLNCRNA SNHG14, hsa-miRNA-3940-5p and NAP1L2 mRNA had an excellent performance characteristics and more superior than CEA, and CA19.9 for differentiating CRC from controls. Combined expression of lncRNA SNHG14- hsa-miR-3940-5p and NAP1L2 mRNA had reached 100% sensitivity with accuracy 93%. Interestingly, serum hsa-miRNA-3940-5p could be an independent prognostic factor in CRC. CONCLUSION The extracellular lncRNA SNHG14- hsa-miR-3940-5p - NAP1L2 mRNA may aid in CRC management.KEY MESSAGESThe extracellular RNAs provide a potential class of noninvasive biomarkers with high specificity, accuracy and stability for detection of CRC.We used insilico data analysis followed by qPCR for detection of differential NAP1L2 gene expression with the selected epigenetic regulators.Our data presented interesting biomarker panel (NAP1L2 gene, lncRNA-SNHG14 and hsa-miR-3940-5p) that may be potential for CRC diagnosis and prognosis.
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Affiliation(s)
- Marwa Matboli
- Medical Biochemistry and Molecular Biology Department, Ain Shams Faculty of Medicine, Cairo, Egypt
| | - Ayman E Shafei
- Faculty of Medicine, Modern University for Technology and Information, Cairo, Egypt
| | - Mahmoud A Ali
- Biomedical Research Department, Armed Forces College of Medicine, Cairo, Egypt
| | | | - Mahmoud Naser
- Biomedical Research Department, Armed Forces College of Medicine, Cairo, Egypt
| | - Tamer Abdel-Rahman
- Tropical Medicine Department, Ain Shams Faculty of Medicine, Cairo, Egypt
| | - Nahla Anber
- Fellow of Biochemistry, Mansoura University, Cairo, Egypt
| | - Marwa Ali
- Medical Biochemistry and Molecular Biology Department, Ain Shams Faculty of Medicine, Cairo, Egypt
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Hu YA, Zhu Y, Liu G, Yao X, Yan X, Yang Y, Wang W, Zou X, Li X. Expression profiles of circular RNAs in colon biopsies from Crohn's disease patients by microarray analysis. J Clin Lab Anal 2021; 35:e23788. [PMID: 33955043 PMCID: PMC8183921 DOI: 10.1002/jcla.23788] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 03/29/2021] [Accepted: 03/30/2021] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Circular RNAs (circRNAs) are involved in various diseases and serve as biomarkers. The present study aimed to investigate unique expression profiles of circRNAs in colon tissues of Crohn's disease (CD) and search novel biomarkers for the diagnosis. METHODS Differentially expressed (DE) circRNAs in biopsies from four CD patients, four ulcerative colitis (UC) patients, and four healthy controls (HC) were screened by microarray. Hsa_circ_0062142 and hsa_circ_0001666 were verified in another expanded validation cohort. Bioinformatics analysis was applied to predict the function of two DE circRNAs. Receiver operating characteristic (ROC) curves were constructed to evaluate the diagnostic value of CD. RESULTS The top 10 upregulated circRNAs in CD compared with HC were hsa_circ_0000691, hsa_circ_0001666, hsa_circ_0004183, hsa_circ_0009024, hsa_circ RNA_405324, hsa_circ_0002003, hsa_circ_0085323, hsa_circ_0040994, hsa_circ_0062142, and hsa_circ_0048148; the top 10 downregulated circRNAs were hsa_circ_0049356, hsa_circ RNA_405443, hsa_circ RNA_403556, hsa_circ_0092328, hsa_circ_0003979, hsa_circ_0074491, hsa_circ_0023461, hsa_circ RNA_406237, hsa_circ_0034044, and hsa_circ RNA_400564 (fold change in descending order). The expression levels of hsa_circ_0001666 and hsa_circ_0062142 in CD were significantly higher than those in UC and HC (p < 0.01). ROC curves suggested the favorable diagnostic value of hsa_circ_0062142 and hsa_circ_0001666 (AUC = 0.803 and 0.858, respectively, p < 0.01). In silico analysis indicated that these circRNAs may be involved in the progress of CD. CONCLUSION Hsa_circ_0062142 and hsa_circ_0001666 may play critical roles in the pathogenesis and serve as potential biomarkers of CD.
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Affiliation(s)
- Yu-An Hu
- Basic Medical Laboratory, Institute of Clinical Laboratory Science, Jinling Hospital, Nanjing University School of Medicine, Nanjing, China
| | - Yan Zhu
- Department of Gastroenterology, Drum Tower Hospital, Nanjing University School of Medicine, Nanjing, China
| | - Guorui Liu
- Basic Medical Laboratory, Institute of Clinical Laboratory Science, Jinling Hospital, Nanjing University School of Medicine, Nanjing, China
| | - Xinyue Yao
- Basic Medical Laboratory, Institute of Clinical Laboratory Science, Jinling Hospital, Nanjing University School of Medicine, Nanjing, China
| | - Xiaoling Yan
- Basic Medical Laboratory, Institute of Clinical Laboratory Science, Jinling Hospital, Nanjing University School of Medicine, Nanjing, China
| | - Yang Yang
- Basic Medical Laboratory, Institute of Clinical Laboratory Science, Jinling Hospital, Nanjing University School of Medicine, Nanjing, China
| | - Weiping Wang
- Basic Medical Laboratory, Institute of Clinical Laboratory Science, Jinling Hospital, Nanjing University School of Medicine, Nanjing, China
| | - Xiaoping Zou
- Department of Gastroenterology, Drum Tower Hospital, Nanjing University School of Medicine, Nanjing, China
| | - Xiaojun Li
- Basic Medical Laboratory, Institute of Clinical Laboratory Science, Jinling Hospital, Nanjing University School of Medicine, Nanjing, China
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Ma M, Li L, Long F, Xiao H, Lu M, Lin C. MiR-133b inhibits colorectal cancer metastasis via lncRNA-LUCAT1. Future Oncol 2021; 17:1013-1023. [PMID: 33541136 DOI: 10.2217/fon-2020-0420] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Aim: Colorectal cancer (CRC) is a common malignant tumor of the digestive system. Metastasis is the leading cause of poor prognosis of CRC patients, warranting further study of the molecular mechanism of metastasis in CRC and identification of new therapeutic targets. MiR-133b has been proven to play an important role in tumorigenesis by directly targeting coding genes. However, whether miR-133b can regulate tumorigenesis via long noncoding RNA (lncRNA) remains unclear. Methods: We systematically analyzed the expression level and correlation of miR-133b and LUCAT1 in cancer tissues and adjacent tissues from 30 patients with CRC. The effects of miR-133b and LUCAT1 on the invasive ability of CRC cells were detected by a transwell assay. The relationship between miR-133b and LUCAT1 was investigated by cells transfection experiments, rescue experiments and luciferase reporter assays. The binding of LUCAT1 and EZH2 was detected by RNA immunoprecipitation assay. Results: MiR-133b was expressed at low levels in CRC tissues, and LUCAT1 was highly expressed, with an inverse correlation between them. LUCAT1 promoted the migration and invasion of HCT116 and SW620 cells. Overexpression of LUCAT1 attenuated the inhibition of cell migration and invasion induced by miR-133b. However, the dual luciferase assay showed that miR-133b did not directly target LUCAT1. Conclusion: MiR-133b affects CRC metastasis via the LUCAT1/EZH2 complex. MiR-133b and LUCAT1 may be potential targets for antimetastasis therapy in CRC.
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Affiliation(s)
- Min Ma
- Postdoctoral Research Station of Clinical Medicine, The Third Xiangya Hospital of Central South University, Changsha, 410013, China.,Department of Gastrointestinal Surgery, The Third Xiangya Hospital of Central South University, Changsha, 410013, China
| | - Liang Li
- Clinical School of Medicine, University of South China, Hengyang, 421000, China
| | - Fei Long
- Department of Gastrointestinal Surgery, The Third Xiangya Hospital of Central South University, Changsha, 410013, China
| | - Hua Xiao
- Department of Hepatobiliary & Intestinal Surgery, Hunan Cancer Hospital & The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, 410013, China
| | - Min Lu
- Department of Oncology, The Second Xiangya Hospital, Central South University, Changsha, 410011, China
| | - Changwei Lin
- Department of Gastrointestinal Surgery, The Third Xiangya Hospital of Central South University, Changsha, 410013, China
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4
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Wu R, Li L, Bai Y, Yu B, Xie C, Wu H, Zhang Y, Huang L, Yan Y, Li X, Lin C. The long noncoding RNA LUCAT1 promotes colorectal cancer cell proliferation by antagonizing Nucleolin to regulate MYC expression. Cell Death Dis 2020; 11:908. [PMID: 33097685 PMCID: PMC7584667 DOI: 10.1038/s41419-020-03095-4] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 08/16/2020] [Accepted: 08/27/2020] [Indexed: 12/12/2022]
Abstract
The long noncoding RNA (lncRNA) LUCAT1 was recently reported to be upregulated and to play an essential role in multiple cancer types, especially colorectal cancer (CRC), but the molecular mechanisms of LUCAT1 in CRC are mostly unreported. Here, a systematic analysis of LUACT1 expression is performed with data from TCGA database and clinic CRC samples. LUCAT1 is identified as a putative oncogene, which is significantly upregulated in CRC and is associated with poor prognosis. Loss of LUCAT1 restricts CRC proliferative capacities in vitro and in vivo. Mechanically, NCL is identified as the protein binding partner of LUCAT1 by using chromatin isolation by RNA purification coupled with mass spectrometry (ChIRP-MS) and RNA immunoprecipitation assays. We also show that NCL directly binds to LUCAT1 via its putative G-quadruplex-forming regions from nucleotides 717 to 746. The interaction between LUCAT1 and NCL interferes NCL-mediated inhibition of MYC and promote the expression of MYC. Cells lacking LUCAT1 show a decreased MYC expression, and NCL knockdown rescue LUCAT1 depletion-induced inhibition of CRC cell proliferation and MYC expression. Our results suggest that LUCAT1 plays a critical role in CRC cell proliferation by inhibiting the function of NCL via its G-quadruplex structure and may serve as a new prognostic biomarker and effective therapeutic target for CRC.
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Affiliation(s)
- Runliu Wu
- Department of Gastrointestinal surgery, The Third XiangYa Hospital of Central South University, Changsha, Hunan, 410013, China
| | - Liang Li
- Class 25 grade 2016, The Five-Year Program in Clinical Medicine, School of Medicine, University of South China, Hengyang, Hunan, 421001, China
| | - Yang Bai
- Department of Gastrointestinal surgery, The Third XiangYa Hospital of Central South University, Changsha, Hunan, 410013, China
| | - Bowen Yu
- Department of Gastrointestinal surgery, The Third XiangYa Hospital of Central South University, Changsha, Hunan, 410013, China
| | - Canbin Xie
- Department of Gastrointestinal surgery, The Third XiangYa Hospital of Central South University, Changsha, Hunan, 410013, China
| | - Hao Wu
- Department of Gastrointestinal surgery, The Third XiangYa Hospital of Central South University, Changsha, Hunan, 410013, China
| | - Yi Zhang
- Department of Gastrointestinal surgery, The Third XiangYa Hospital of Central South University, Changsha, Hunan, 410013, China
| | - Lihua Huang
- Center for Experimental Medicine, The Third XiangYa Hospital of Central South University, Changsha, Hunan, 410013, China
| | - Yichao Yan
- Department of Gastroenterological Surgery, Peking University International Hospital, Beijing, 102206, China
| | - Xiaorong Li
- Department of Gastrointestinal surgery, The Third XiangYa Hospital of Central South University, Changsha, Hunan, 410013, China.
| | - Changwei Lin
- Department of Gastrointestinal surgery, The Third XiangYa Hospital of Central South University, Changsha, Hunan, 410013, China.
- School of Life Sciences, Central South University, Changsha, Hunan, 410078, China.
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Li F, Li H, Hou Y. Identification and analysis of survival-associated ceRNA triplets in prostate adenocarcinoma. Oncol Lett 2019; 18:4040-4047. [PMID: 31579415 PMCID: PMC6757318 DOI: 10.3892/ol.2019.10752] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2018] [Accepted: 06/13/2019] [Indexed: 12/19/2022] Open
Abstract
Prostate adenocarcinoma (PRAD) is one of the most common causes of cancer-associated mortality worldwide. Recent evidence has emphasized the role of competitive endogenous RNAs (ceRNA) in prostate cancer. However, the current understanding of the roles that ceRNAs play in survival-associated PRAD remains in its infancy. In the present study, a PRAD-specific ceRNA network was constructed by integrating long non-coding RNA (lncRNA)-microRNA (miRNA)-gene interactions using experimental and computational methods, as well as expression correlations from The Cancer Genome Atlas database. The topological features of the ceRNA network were then analyzed and the PRAD-risk lncRNAs were compared with non-risk lncRNAs within this network. It was revealed that PRAD-risk lncRNAs had a higher degree, closeness and betweenness centrality, but also had the shortest path length. Finally, 42 significant PRAD-survival-associated triplets were identified. Notably, these triplets may form a compacted subnetwork composed of only 25 nodes (5 miRNAs, 4 lncRNAs and 16 genes) and 32 edges, indicating that some nodes were involved in many triplets. Among this subnetwork, mir-21 indicated the highest degree centrality and was demonstrated to exert its oncogenic effects in prostate tumors by downregulating transforming growth factor β receptor 2 (TGFBR2). Two triplets (MIR22HG_hsa-mir-21_TGFBR2 and MIR22HG_hsa-mir-21_BCL2) were finally identified; not only were they significantly associated with PRAD survival but they also had the highest average degree in the identified subnetwork. The results from the present study provide further insights into the understanding of the potential roles and interactions of ceRNA triplets and potential prognosis markers for PRAD.
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Affiliation(s)
- Fan Li
- Department of Urology, China-Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
| | - Hai Li
- Department of Urology, China-Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
| | - Yi Hou
- Department of Urology, China-Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
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Liao L, Kuang H, Xue J, Zhou X, Yin F, Wang Y. Up-regulated long noncoding RNA AB073614 modulates the tumor cell proliferation, invasion and migration in human colorectal cancer. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2019; 12:2849-2857. [PMID: 31934121 PMCID: PMC6949708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Accepted: 10/25/2018] [Indexed: 06/10/2023]
Abstract
Colorectal cancer (CRC) is a common cancer and the function of long noncoding RNA (lncRNA) AB073614 in CRC mainly unclear. Here, the expression of lncRNA AB073614 in CRC tissues was evaluated by quantitative real-time PCR (qRT-PCR). CCK-8 assays were conducted to explore the impact of AB073614 on cell proliferation. The effects of AB073614 on cell migration, invasion and apoptosis were evaluated by a Transwell in vitro assay. Apoptosis-related molecular marker expression levels were detected by Western blot analysis. In the present study, we confirmed that AB073614 was significantly upregulated in CRC tissues. A difference analysis in the lncRNA AB073614 expression in CRC patient group suggested that the expression of lncRNA AB073614 was independently associated with higher possibilities of high grade (P = 0.0005), tumor size (> 5 cm) (P = 0.0001), distant metastasis (P = 0.0009), and differentiation level (P = 0.0037). In vitro studies demonstrated that the knockdown of {"type": "entrez-nucleotide", "attrs":{"text": "AB073614", "term_id": "51555790", "term_text": "AB073614"}}AB073614 suppressed SW480 cell proliferation. Meanwhile, the overexpression of {"type": "entrez-nucleotide", "attrs":{"text": "AB073614", "term_id": "51555790", "term_text": "AB073614"}}AB073614 in SW480 cells accelerated cell growth and invasion, and suppressed cell apoptosis. In conclusion, our results suggest that AB073614 may function as a tumor promoter in CRC. Our findings may provide a therapeutic approach for the future treatment of CRC.
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Affiliation(s)
- Liya Liao
- Department of Laboratory, The Fifth Affiliated Hospital, Sun Yat-sen UniversityZhuhai, Guangdong, P. R. China
| | - Haoyu Kuang
- Department of Laboratory, The Fifth Affiliated Hospital, Sun Yat-sen UniversityZhuhai, Guangdong, P. R. China
| | - Jinfang Xue
- Department of Laboratory, The Fifth Affiliated Hospital, Sun Yat-sen UniversityZhuhai, Guangdong, P. R. China
| | - Xiaojun Zhou
- Department of Gastroenterology, The Fifth Affiliated Hospital, Sun Yat-sen UniversityZhuhai, Guangdong, P. R. China
| | - Fang Yin
- Department of General Surgery, The Fifth Affiliated Hospital, Sun Yat-sen UniversityZhuhai, Guangdong, P. R. China
| | - Yanan Wang
- Department of Laboratory, The Fifth Affiliated Hospital, Sun Yat-sen UniversityZhuhai, Guangdong, P. R. China
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7
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Zhuo W, Hu D, Chen X, Zhang T. LINC01638 silencing inhibits cancer cell proliferation in colorectal adenocarcinoma through interaction with RUNX2. Mol Med Rep 2019; 19:5275-5280. [PMID: 31059049 PMCID: PMC6522899 DOI: 10.3892/mmr.2019.10191] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Accepted: 03/11/2019] [Indexed: 12/22/2022] Open
Abstract
lncRNA LINC01638 has been revealed to play an oncogenic role in triple negative breast cancer. The present study was carried out to investigate the involvement of LINC01638 in colorectal adenocarcinoma. In the present study it was observed that LINC01638 in plasma was upregulated in colorectal adenocarcinoma patients compared to healthy controls. Plasma levels of LINC01638 were affected by tumor size but not by distant metastasis. Plasma levels of Runt‑related transcription factor 2 (RUNX2) were also higher in colorectal adenocarcinoma patients than in healthy controls, and were positively correlated with plasma levels of LINC01638 in colorectal adenocarcinoma patients but not in healthy controls. ROC curve analysis revealed that upregulation of LINC01638 distinguished colorectal adenocarcinoma at stage I and II from healthy controls. LINC01638 shRNA knockdown led to RUNX2 downregulation, while RUNX2 overexpression exhibited no significant effects on LINC01638. LINC01638 shRNA knockdown inhibited and RUNX2 overexpression promoted the proliferation of colorectal adenocarcinoma cells. RUNX2 overexpression attenuated the effects of LINC01638 shRNA knockdown on cancer cell proliferation. Therefore, lncRNA LINC01638 silencing may inhibit cancer cell proliferation in colorectal adenocarcinoma through its interaction with RUNX2.
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Affiliation(s)
- Wenying Zhuo
- Department of General Surgery, Cixi People's Hospital, Cixi, Zhejiang 315300, P.R. China
| | - Dengdi Hu
- Department of General Surgery, Cixi People's Hospital, Cixi, Zhejiang 315300, P.R. China
| | - Xihua Chen
- Department of General Surgery, Cixi People's Hospital, Cixi, Zhejiang 315300, P.R. China
| | - Tian Zhang
- Department of General Surgery, Cixi People's Hospital, Cixi, Zhejiang 315300, P.R. China
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8
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Han DX, Wang CJ, Sun XL, Liu JB, Jiang H, Gao Y, Chen CZ, Yuan B, Zhang JB. Identification of circular RNAs in the immature and mature rat anterior pituitary. J Endocrinol 2019; 240:393-402. [PMID: 30657740 DOI: 10.1530/joe-18-0540] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Accepted: 12/20/2018] [Indexed: 12/12/2022]
Abstract
Circular RNAs (circRNAs) are a new class of RNA that have a stable structure characterized by covalently closed circular molecules and are involved in invasive pituitary adenomas and recurrent clinically nonfunctioning pituitary adenomas. However, information on circRNAs in the normal pituitary, especially in rats, is limited. In this study, we identified 4123 circRNAs in the immature (D15) and mature (D120) rat anterior pituitary using the Illumina platform, and 32 differentially expressed circRNAs were found. A total of 150 Gene Ontology terms were significantly enriched, and 16 KEGG pathways were found to contain differentially expressed genes. Moreover, we randomly selected eight highly expressed circRNAs and detected their relative expression levels in the mature and immature rat pituitary by qPCR. In addition, we predicted 90 interactions between 53 circRNAs and 57 miRNAs using miRanda. Notably, circ_0000964 and circ_0001303 are potential miRNA sponges that may regulate the Fshb gene. The expression profile of circRNAs in the immature and mature rat anterior pituitary may provide more information about the roles of circRNAs in the development and reproduction in mammals.
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Affiliation(s)
- Dong-Xu Han
- Department of Laboratory Animals, College of Animal Sciences, Jilin University, Changchun, Jilin, People's Republic of China
| | - Chang-Jiang Wang
- Department of Laboratory Animals, College of Animal Sciences, Jilin University, Changchun, Jilin, People's Republic of China
| | - Xu-Lei Sun
- Department of Laboratory Animals, College of Animal Sciences, Jilin University, Changchun, Jilin, People's Republic of China
| | - Jian-Bo Liu
- Department of Laboratory Animals, College of Animal Sciences, Jilin University, Changchun, Jilin, People's Republic of China
| | - Hao Jiang
- Department of Laboratory Animals, College of Animal Sciences, Jilin University, Changchun, Jilin, People's Republic of China
| | - Yan Gao
- Department of Laboratory Animals, College of Animal Sciences, Jilin University, Changchun, Jilin, People's Republic of China
| | - Cheng-Zhen Chen
- Department of Laboratory Animals, College of Animal Sciences, Jilin University, Changchun, Jilin, People's Republic of China
| | - Bao Yuan
- Department of Laboratory Animals, College of Animal Sciences, Jilin University, Changchun, Jilin, People's Republic of China
| | - Jia-Bao Zhang
- Department of Laboratory Animals, College of Animal Sciences, Jilin University, Changchun, Jilin, People's Republic of China
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Ye G, Guo L, Xing Y, Sun W, Yuan M. Identification of prognostic biomarkers of prostate cancer with long non-coding RNA-mediated competitive endogenous RNA network. Exp Ther Med 2019; 17:3035-3040. [PMID: 30906477 PMCID: PMC6425256 DOI: 10.3892/etm.2019.7277] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Accepted: 02/05/2019] [Indexed: 12/28/2022] Open
Abstract
Prostate cancer (PCa) is the second most frequently diagnosed male cancer, and no treatments exist for effective inhibition of metastatic spread of PCa. Long non-coding RNA (lncRNA) plays key roles in pathogenesis and development of various cancers through competing with endogenous RNAs (ceRNAs), but at present research on lncRNA functions in PCa is still very limited. Hence, this aspect was investigated using bioinformatics methods. Firstly, the functional lncRNA-mediated ceRNA network associated with PCa was constructed by the multi-step computational approach. Then the cytoscape software was used to analyze the node degree and betweenness centrality (BC) value of lncRNAs and mRNAs in the interaction. Finally, the lncRNAs were screened in the central region of the network by the node degree and BC value, and the functional enrichment of mRNAs was evaluated with the Gene Ontology (GO) database. In our results, LINC00476, MALAT1, SNHG11, LINC00649, and ILF3-AS1 are the lncRNAs which have the most nodes and higher BC values and considered as prognostic markers in PCa. GO analysis suggested that the function of screened lncRNAs was obviously focused on intracellular receptor signaling pathway, which indicated these lncRNAs might be potential biomarkers for diagnosis, evaluation and gene-targeted therapy of PCa.
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Affiliation(s)
- Guomei Ye
- Department of Urology, The Second Hospital of Shandong University, Jinan, Shandong 250033, P.R. China
| | - Liqiang Guo
- Department of Urology, The Second Hospital of Shandong University, Jinan, Shandong 250033, P.R. China
| | - Yanfei Xing
- Department of Urology, The Second Hospital of Shandong University, Jinan, Shandong 250033, P.R. China
| | - Wendong Sun
- Department of Urology, The Second Hospital of Shandong University, Jinan, Shandong 250033, P.R. China
| | - Mingzhen Yuan
- Department of Urology, The Second Hospital of Shandong University, Jinan, Shandong 250033, P.R. China
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10
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Lin C, Zhang Y, Chen Y, Bai Y, Zhang Y. Long noncoding RNA LINC01234 promotes serine hydroxymethyltransferase 2 expression and proliferation by competitively binding miR-642a-5p in colon cancer. Cell Death Dis 2019; 10:137. [PMID: 30755591 PMCID: PMC6372696 DOI: 10.1038/s41419-019-1352-4] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 12/26/2018] [Accepted: 01/07/2019] [Indexed: 01/06/2023]
Abstract
Long noncoding RNAs (lncRNAs) have been indicated as important regulators in various human cancers. However, the overall biological roles and clinical significance of most lncRNAs in colon carcinogenesis are not fully understood. Hence, we investigated the clinical significance, biological function and mechanism of LINC01234 in colon cancer. First, we analyzed LINC01234 alterations in colon cancer tissues and corresponding paracancerous tissues through the analysis of sequencing data obtained from The Cancer Genome Atlas and colon cancer patients. Next, we evaluated the effect of LINC01234 on colon cancer cell proliferation and its regulatory mechanism of serine hydroxymethyltransferase 2 (SHMT2) by acting as a competing endogenous RNA (ceRNA). We found that LINC01234 expression was significantly upregulated in colon cancer tissues and was associated with a shorter survival time. Furthermore, the knockdown of LINC01234 induced proliferation arrest via suppressing serine/glycine metabolism. Mechanistic investigations have indicated that LINC01234 functions as a ceRNA for miR-642a-5p, thereby leading to the derepression of its endogenous target serine hydroxymethyltransferase 2 (SHMT2). LINC01234 is significantly overexpressed in colon cancer, and the LINC01234–miR642a-5p–SHMT2 axis plays a critical role in colon cancer proliferation. Our findings may provide a potential new target for colon cancer diagnosis and therapy.
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Affiliation(s)
- Changwei Lin
- Department of Gastrointestinal surgery, The Third XiangYa Hospital of Central South University, Changsha, Hunan, 410013, China.,College of Life Sciences, Central South University, Changsha, Hunan, 410078, China
| | - Yi Zhang
- Department of General Surgery, Affiliated Hospital of Xuzhou Medical University, 221000, Xuzhou, P.R. China
| | - Yifei Chen
- Department of Otolaryngology-Head Neck Surgery, The Fourth Hospital of Changsha (The Changsha Affiliated Hospital of Hunan Normal University), Hunan Normal University, Changsha, Hunan, 410013, China
| | - Yang Bai
- Department of Gastrointestinal surgery, The Third XiangYa Hospital of Central South University, Changsha, Hunan, 410013, China
| | - Yi Zhang
- Department of Gastrointestinal surgery, The Third XiangYa Hospital of Central South University, Changsha, Hunan, 410013, China.
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Zhou J, Zou Y, Hu G, Lin C, Guo Y, Gao K, Wu M. Facilitating colorectal cancer cell metastasis by targeted binding of long non-coding RNA ENSG00000231881 with miR-133b via VEGFC signaling pathway. Biochem Biophys Res Commun 2018; 509:1-7. [PMID: 30581003 DOI: 10.1016/j.bbrc.2018.08.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Accepted: 08/01/2018] [Indexed: 02/06/2023]
Abstract
BACKGROUND Colorectal cancer mainly metastasizes through the lymphatic pathways and is associated with a high mortality rate. It is one of the leading causes of cancer-related deaths. In this study, the effects of long non-coding RNA (lncRNA) ENSG00000231881 on the metastasis of colorectal cancer cells were evaluated. METHODS The expression level of ENSG00000231881 in colorectal cancer tissues was detected with bioinformatics analysis and quantitative polymerase chain reaction (qPCR) assay. Functional colorectal cancer cell models for the overexpression and interference expression of ENSG00000231881 were established. MTT, transwell, tube formation, qPCR, and western blot assays were performed to detect changes in various cellular functions and expression levels of key factors (miR-133b and vascular endothelial growth factor C [VEGFC]) in ENSG00000231881 functional models. Dual luciferase assay was performed to verify the binding relationship between ENSG00000231881 and miR-133b. RESULTS ENSG00000231881 expression level was substantially higher in colorectal cancer tissues than in paracancerous tissues and correlated with malignancy and prognosis. In colorectal cancer cells, ENSG00000231881 overexpression significantly promoted cell proliferation, metastasis, and tube formation in lymphatic epithelium, decreased miR-133b expression, and increased VEGFC expression. On the contrary, ENSG00000231881 interference expression showed exactly opposite results. ENSG00000231881 could bind to miR-133b and consequently affect the cell functions through the regulation of VEGFC expression via miR-133b. CONCLUSION ENSG00000231881 binds to miR-133b via competitive endogenous RNA (ceRNA) mechanism and regulates the VEGFC signaling pathway, consequently leading to the metastasis of colorectal cancer cells. Our study provides a theoretical basis for the use of ENSG00000231881 as a therapeutic target for gene-targeted therapy in colorectal cancer.
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Affiliation(s)
- Jianyu Zhou
- Gastrointestinal Surgery Ward, Xiangya 3rd Hospital, Centre South University, Hunan, 410013, China
| | - Yueyi Zou
- Gastrointestinal Surgery Ward, Xiangya 3rd Hospital, Centre South University, Hunan, 410013, China
| | - Gui Hu
- Gastrointestinal Surgery Ward, Xiangya 3rd Hospital, Centre South University, Hunan, 410013, China
| | - Changwei Lin
- Gastrointestinal Surgery Ward, Xiangya 3rd Hospital, Centre South University, Hunan, 410013, China
| | - Yihang Guo
- Gastrointestinal Surgery Ward, Xiangya 3rd Hospital, Centre South University, Hunan, 410013, China
| | - Kai Gao
- Gastrointestinal Surgery Ward, Xiangya 3rd Hospital, Centre South University, Hunan, 410013, China
| | - Mayrong Wu
- Operation Center, Xiangya 3rd Hospital, Centre South University, Hunan, 410013, China.
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12
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Ma Y, Chen Y, Lin C, Hu G. Biological functions and clinical significance of the newly identified long non‑coding RNA RP1‑85F18.6 in colorectal cancer. Oncol Rep 2018; 40:2648-2658. [PMID: 30226619 PMCID: PMC6151894 DOI: 10.3892/or.2018.6694] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2018] [Accepted: 09/07/2018] [Indexed: 12/18/2022] Open
Abstract
The biological functions of long non‑coding RNAs (lncRNAs) in cancer have not been fully elucidated. The present study demonstrated that the expression of a newly identified lncRNA, RP1‑85F18.6, was upregulated in colorectal cancer (CRC) tissues and cell lines. Knockdown of lncRNA RP1‑85F18.6 served a key role in tumor inhibition, reduced cell proliferation and invasion, disrupted the cell cycle, and increased apoptosis and pyroptosis of CRC cells. Conversely, overexpression of lncRNA RP1‑85F18.6 exerted the opposite effects. Furthermore, silencing lncRNA RP1‑85F18.6 decreased ΔNp63 expression at both the mRNA and protein levels. Furthermore, co‑transfection with ΔNp63 siRNA and lncRNA RP1‑85F18.6‑expressing vector attenuated the tumor‑promoting effects of lncRNA RP1‑85F18.6 overexpression. The expression levels of lncRNA RP1‑85F18.6, ΔNp63 and gasdermin D (GSDMD) were revealed to be associated with lymph node and distant metastases in patients with CRC, and therefore may serve as predictors in CRC. The findings of the present study suggested that lncRNA RP1‑85F18.6 may trigger CRC cell proliferation, invasion and cell cycle disruption, and suppress apoptosis and pyroptosis of CRC cells through regulating ΔNp63 expression. Therefore, lncRNA RP1‑85F18.6 and ΔNp63 may be considered unfavorable biomarkers, whereas GSDMD may be a favorable biomarker in CRC; these markers may prove valuable in the future diagnosis and prognosis of CRC.
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Affiliation(s)
- Yeshuo Ma
- Department of Cardiology, The Third Xiangya Hospital of Central South University, Changsha, Hunan 410013, P.R. China
| | - Yifei Chen
- Department of Otolaryngology‑Head Neck Surgery, The Fourth Hospital of Changsha (The Changsha Affiliated Hospital of Hunan Normal University), Hunan Normal University, Changsha, Hunan 410013, P.R. China
| | - Changwei Lin
- Department of Gastrointestinal Surgery, The Third Xiangya Hospital of Central South University, Changsha, Hunan 410013, P.R. China
| | - Gui Hu
- Department of Gastrointestinal Surgery, The Third Xiangya Hospital of Central South University, Changsha, Hunan 410013, P.R. China
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13
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Wang Y, Lu Z, Wang N, Feng J, Zhang J, Luan L, Zhao W, Zeng X. Long noncoding RNA DANCR promotes colorectal cancer proliferation and metastasis via miR-577 sponging. Exp Mol Med 2018; 50:1-17. [PMID: 29717105 PMCID: PMC5938019 DOI: 10.1038/s12276-018-0082-5] [Citation(s) in RCA: 80] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Revised: 01/23/2018] [Accepted: 02/14/2018] [Indexed: 12/12/2022] Open
Abstract
Long non-coding RNAs (lncRNAs) play key roles in various malignant tumors, including colorectal cancer (CRC). Long non-coding RNA differentiation antagonizing non-protein coding RNA (DANCR) is overexpressed in CRC patients, but whether it affects CRC proliferation and metastasis via regulation of heat shock protein 27 (HSP27) remains unclear. In the present study, we found that DANCR was highly expressed and correlated with proliferation and metastasis in CRC. In addition, we demonstrated that DANCR and HSP27 were both targets of microRNA-577 (miR-577) and shared the same binding site. Furthermore, we revealed that DANCR promoted HSP27 expression and its mediation of proliferation/metastasis via miR-577 sponging. Finally, using an in vivo study, we confirmed that overexpression of DANCR promoted CRC tumor growth and liver metastasis. The present study demonstrated the function of DANCR in CRC and might provide a new target in the treatment of CRC.
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Affiliation(s)
- Yong Wang
- The 4th Department of Orthopedic Surgery, Central Hospital Affiliated to Shenyang Medical College, Shenyang, 110024, China
| | - Zhi Lu
- Department of Nuclear Medicine, The First Affiliated Hospital of Dalian Medical University, Dalian, 116011, China
| | - Ningnin Wang
- The 2nd Department of Cardiology, Central Hospital Affiliated to Shenyang Medical College, Shenyang, 110024, China
| | - Jianzhou Feng
- The 4th Department of Orthopedic Surgery, Central Hospital Affiliated to Shenyang Medical College, Shenyang, 110024, China
| | - Junjie Zhang
- Department of Pathology, Central Hospital Affiliated to Shenyang Medical College, Shenyang, 110024, China
| | - Lan Luan
- Department of Pathology, Central Hospital Affiliated to Shenyang Medical College, Shenyang, 110024, China
| | - Wei Zhao
- The 4th Department of Orthopedic Surgery, Central Hospital Affiliated to Shenyang Medical College, Shenyang, 110024, China
| | - Xiandong Zeng
- Department of Surgical Oncology, Central Hospital Affiliated to Shenyang Medical College, Shenyang, 110024, China.
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14
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Li Y, Lv M, Song Z, Lou Z, Wang R, Zhuang M. Long non-coding RNA NNT-AS1 affects progression of breast cancer through miR-142-3p/ZEB1 axis. Biomed Pharmacother 2018; 103:939-946. [PMID: 29710510 DOI: 10.1016/j.biopha.2018.04.087] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2017] [Revised: 04/09/2018] [Accepted: 04/10/2018] [Indexed: 12/20/2022] Open
Abstract
Some evidences have been provided to verify the effects of lncRNA NNT-AS1 on cancer progression. However, the crucial impacts of NNT-AS1 on the malignancy of breast cancer have not been elaborated. This study aims to detect the expression pattern and functional effects of NNT-AS1 in breast cancer. qRT-PCR analysis was applied to detect the expression of NNT-AS1 in both BC tissues and matched normal tissues. Loss of function assay was carried out to detect the effects of silenced NNT-AS1 on proliferation, metastasis and EMT process of BC cells. To understand the functional mechanism of NNT-AS1, mechanism assays were designed and performed in BC cells. Subcellular fractionation assay demonstrated that NNT-AS1 was located in the cytoplasm of BC cells. Therefore, NNT-AS1 might exert ceRNA functions in BC cells. To validate this hypothesis, we found the combination between NNT-AS1 and miR-142-3p through conducting bioinformatics analysis, RIP and luciferase reporter assays. Similarly, the combination between miR-142-3p and ZEB1 was verified. Finally, the recue assays were carried out to demonstrate the effects of NNT-AS1/miR-142-3p/ZEB1 axis on the biological behaviors of BC cells. All the above findings revealed a fact that NNT-AS1 affects breast cancer progression through modulating miR-142-3p/ZEB1 axis.
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Affiliation(s)
- Yan Li
- Department of Oncology, Lianyungang First People's Hospital, Lianyungang, Jiangsu, 222002, China.
| | - Min Lv
- Department of Scientific Research, Nanjing Medical University Affiliated Cancer Hospital, Cancer Institute of Jiangsu Province, Nanjing, Jiangsu, 210009, China
| | - Ziyan Song
- Department of Oncology, Lianyungang First People's Hospital, Lianyungang, Jiangsu, 222002, China
| | - Zhi Lou
- Department of Oncology, Lianyungang First People's Hospital, Lianyungang, Jiangsu, 222002, China
| | - Ran Wang
- Department of Oncology, Lianyungang First People's Hospital, Lianyungang, Jiangsu, 222002, China
| | - Min Zhuang
- Department of Oncology, Lianyungang First People's Hospital, Lianyungang, Jiangsu, 222002, China.
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15
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Wang C, Zhu X, Pu C, Song X. Upregulated plasmacytoma variant translocation 1 promotes cell proliferation, invasion and metastasis in colorectal cancer. Mol Med Rep 2018; 17:6598-6604. [PMID: 29512788 PMCID: PMC5928643 DOI: 10.3892/mmr.2018.8669] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Accepted: 02/27/2018] [Indexed: 02/07/2023] Open
Abstract
Emerging evidence indicates that the long non-coding RNA (lncRNA) plasmacytoma variant translocation 1 (PVT1) is associated with tumourigenesis in various types of cancer. However, its specific effects on the proliferation, invasion and metastasis of colorectal cancer (CRC) are still poorly understood. The present study aimed to investigate PVT1 expression in CRC and explore its role in CRC pathogenesis. The reverse transcriptase‑quantitative polymerase chain reaction (RT‑qPCR) technique was used to assess PVT1 expression in CRC cell lines. Gene Expression Omnibus (GEO) database analysis and measurement of clinical samples was used to analyse the correlation between PVT1 expression, CRC metastasis and overall survival (OS). In addition, knockdown of PVT1 expression was performed using short interfering RNA (siRNA) and RT‑qPCR, western blotting, CCK‑8 assays, tumour cell clone‑formation and Matrigel invasion assays were used to observe its biological functions in HCT116 cells. The present study demonstrated that the expression of PVT1 in CRC cell lines was higher than that in normal colon mucosal cell lines. Using GEO database analysis and the measurement of clinical samples, it was revealed that CRC patients with high PVT1 expression demonstrated poor OS. Multivariate analysis indicated that high PVT1 expression is an independent risk factor for patients with CRC. In addition, PVT1 knockdown suppressed the proliferation, invasion and metastasis of CRC cells in vitro, which were associated with decreasing vimentin, cyclin D1 and cyclin‑dependent kinase 4 expression and enhanced E‑cadherin expression. The results of the present study suggest that PVT1 may serve a critical role in CRC progression and metastasis and may serve as a potential prognostic biomarker for CRC.
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Affiliation(s)
- Chaoyu Wang
- Department of General Surgery, People's Hospital of Guizhou Province, Guiyang, Guizhou 550002, P.R. China
| | - Xin Zhu
- Department of General Surgery, People's Hospital of Guizhou Province, Guiyang, Guizhou 550002, P.R. China
| | - Chibin Pu
- Department of Gastroenterology, Zhongda Hospital, Southeast University, Nanjing, Jiangsu 210009, P.R. China
| | - Xuan Song
- Department of General Surgery, People's Hospital of Guizhou Province, Guiyang, Guizhou 550002, P.R. China
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16
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Shuwen H, Qing Z, Yan Z, Xi Y. Competitive endogenous RNA in colorectal cancer: A systematic review. Gene 2017; 645:157-162. [PMID: 29273554 DOI: 10.1016/j.gene.2017.12.036] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Revised: 11/30/2017] [Accepted: 12/18/2017] [Indexed: 12/14/2022]
Abstract
Colorectal cancer is one of the most common malignant tumours. Competitive endogenous RNA (ceRNA) networks have been hypothesized, in which various RNAs regulate each other's expression using microRNA response elements (MREs). Recent evidence has highlighted the crucial regulatory roles of ceRNA networks in colorectal cancer. In this review, we summarize the present research methods as well as the currently known ceRNA competitors and targets in colorectal cancer. In addition, we discuss the significance of ceRNA and shortcomings of current studies of colorectal cancer.
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Affiliation(s)
- Han Shuwen
- Department of Medical Oncology, Huzhou Central Hospital, Huzhou, Zhejiang Province, China
| | - Zhou Qing
- Department of Critical Care Medicine, Huzhou Central Hospital, Huzhou, Zhejiang Province, China
| | - Zheng Yan
- Department of Pathology, Huzhou Central Hospital, Huzhou, Zhejiang Province, China
| | - Yang Xi
- Department of Intervention and Radiotherapy, Huzhou Central Hospital, Huzhou, Zhejiang Province, China.
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17
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Zhao L, Kong H, Sun H, Chen Z, Chen B, Zhou M. LncRNA-PVT1 promotes pancreatic cancer cells proliferation and migration through acting as a molecular sponge to regulate miR-448. J Cell Physiol 2017; 233:4044-4055. [PMID: 28657147 DOI: 10.1002/jcp.26072] [Citation(s) in RCA: 118] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Accepted: 06/22/2017] [Indexed: 12/12/2022]
Abstract
The identification and characterization of long non-coding RNAs (lncRNAs) in diverse biological process has currently developed rapidly. LncRNA-PVT1, located adjacent to the MYC locus on chromosomal region 8q24, has been reported to be associated with many biological processes. However, the function and mechanism of PVT1 in pancreatic carcinoma (PC) is poorly understood. In this present study, we first measured the level of PVT1 in the PC cell lines and tissues by quantitative real-time PCR (qRT-PCR), and then employed loss-of-function and gain-of-function approaches to explore the association between PVT1 expression levels and PC cell proliferation/migration ability. Furthermore, bioinformatics analysis was utilized to show that PVT1 contains binding site for miR-448 and an inverse correlation between PVT1 and miR-448 was obtained in PC specimens. Additionally, dual luciferase reporter assay, RNA-binding protein immunoprecipitation (RIP) and applied biotin-avidin pulldown system were applied to further confirm that PVT1 directly bind with microRNA binding site harboring in the PVT1 sequence. Then, SERBP1 was identified as a target of miR-448 according to the gene expression array analysis of PC clinical samples. Together, we revealed that PVT1 functions as an endogenous "sponge" by competing for miR-448 binding to regulate the miRNA target SERBP1 and, therefore, promotes the proliferation and migration of PC cells.
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Affiliation(s)
- Liang Zhao
- Key Laboratory of Surgery, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Hongru Kong
- Department of Surgery, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Hongwei Sun
- Department of Surgery, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Zongjing Chen
- Department of Surgery, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Bicheng Chen
- Department of Surgery, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Mengtao Zhou
- Key Laboratory of Surgery, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China
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18
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Long non-coding RNA HOXA11-AS promotes the proliferation HCC cells by epigenetically silencing DUSP5. Oncotarget 2017; 8:109509-109521. [PMID: 29312625 PMCID: PMC5752538 DOI: 10.18632/oncotarget.22723] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Accepted: 07/26/2017] [Indexed: 01/11/2023] Open
Abstract
Hepatocellular carcinoma has been identified as the fifth most common cancer in men and the ninth in women worldwide. Despite many efforts have been made in recent years, the overall survival rate of patients with hepatocellular carcinoma still remain unsatisfied. Therefore, exploring the mechanisms underlying the progression of hepatocellular carcinoma is essential for developing novel treatments to improve patient prognosis. HOXA11-AS, transcribed from the opposite strand of the protein-coding gene HOXA11, has been identified to be associated with the malignant characteristics of several cancers. However, the biological role and molecular mechanism of HOXA11-AS in hepatocellular carcinoma still need to be further investigated. In the current study, the expression of HOXA11-AS in the hepatocellular carcinoma cell lines and tissues was measured by quantitative real-time PCR. Loss-of-function and gain-of-function approaches were applied to investigate the proliferative function of HOXA11-AS in hepatocellular carcinoma cells. Results from flow cytometric analysis of apoptosis and cell cycle distribution revealed that HOXA11-AS promoted hepatocellular carcinoma cells proliferation through regulating cell cycle and apoptosis. Gene chip technology and quantitative real-time PCR confirmed that DUSP5 was a downstream target of HOXA11-AS. RNA immune co-precipitation assays, RNA pull-down and Chromatin immunoprecipitation assays confirmed that HOXA11-AS could recruit EZH2 to the promoter region of DUSP5, which therefore suppressed the transcription of DUSP5. Collectively, these findings revealed that HOXA11-AS functions as an oncogene in hepatocellular carcinoma through interacting with polycomb-repressive complex2.
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19
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Fujishiro A, Miura Y, Iwasa M, Fujii S, Sugino N, Andoh A, Hirai H, Maekawa T, Ichinohe T. Effects of acute exposure to low-dose radiation on the characteristics of human bone marrow mesenchymal stromal/stem cells. Inflamm Regen 2017; 37:19. [PMID: 29259718 PMCID: PMC5725824 DOI: 10.1186/s41232-017-0049-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Accepted: 07/10/2017] [Indexed: 12/26/2022] Open
Abstract
Background In recent years, increasing attention has been paid to the effects of low-dose irradiation on human health. We examined whether low-dose irradiation affected the functions of mesenchymal stromal/stem cells (MSCs), which are tissue/organ-supportive stem cells, derived from bone marrow (BM). Methods Normal human BM-MSCs from five healthy individuals were used in this study. Culture-expanded BM-MSCs were exposed to 0.1 gray (Gy) of γ-radiation (Cesium-137) at a rate of 0.8 Gy/min (Ir-MSCs), and their expansion, multi-differentiation, and hematopoiesis-supportive capabilities were investigated. Results The expansion of BM-MSCs was transiently delayed after low-dose γ-irradiation compared with that of non-irradiated BM-MSCs (non-Ir-MSCs) in two out of five lots. Adipogenic and osteogenic differentiation capabilities were not significantly affected by low-dose irradiation, although one lot of BM-MSCs tended to have transiently reduced differentiation. When human BM hematopoietic stem/progenitor cells (HPCs) were co-cultured with Ir-MSCs, the generation of CD34+CD38+ cells from HPCs was enhanced compared with that in co-cultures with non-Ir-MSCs in two out of five lots. The mRNA expression level of interleukin (IL)-6 was increased and those of stem cell factor (SCF) and fms-related tyrosine kinase 3 ligand (Flt3L) were decreased in the affected lots of Ir-MSCs. In the other three lots of BM-MSCs, a cell growth delay, enhanced generation of CD34+CD38+ cells from HPCs in co-culture, and a combination of increased expression of IL-6 and decreased expression of SCF and Flt3L were not observed. Of note, the characteristics of these affected Ir-MSCs recovered to a similar level as those of non-Ir-MSCs following culture for 3 weeks. Conclusions Our results suggest that acute exposure to low-dose (0.1 Gy) radiation can transiently affect the functional characteristics of human BM-MSCs.
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Affiliation(s)
- Aya Fujishiro
- Department of Transfusion Medicine and Cell Therapy, Kyoto University Hospital, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto, 606-8507 Japan.,Division of Gastroenterology and Hematology, Department of Medicine, Shiga University of Medical Science, Setatsukinowacho, Otsu, Shiga 520-2192 Japan
| | - Yasuo Miura
- Department of Transfusion Medicine and Cell Therapy, Kyoto University Hospital, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto, 606-8507 Japan.,Department of Hematology and Oncology, Research Institute for Radiation Biology and Medicine, Hiroshima University, 1-2-3 Kasumi, Minamiku, Hiroshima, 734-8553 Japan
| | - Masaki Iwasa
- Department of Transfusion Medicine and Cell Therapy, Kyoto University Hospital, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto, 606-8507 Japan.,Division of Gastroenterology and Hematology, Department of Medicine, Shiga University of Medical Science, Setatsukinowacho, Otsu, Shiga 520-2192 Japan
| | - Sumie Fujii
- Department of Transfusion Medicine and Cell Therapy, Kyoto University Hospital, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto, 606-8507 Japan.,Department of Hematology/Oncology, Graduate School for Medicine, Kyoto University, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto, 606-8507 Japan
| | - Noriko Sugino
- Department of Transfusion Medicine and Cell Therapy, Kyoto University Hospital, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto, 606-8507 Japan.,Department of Hematology/Oncology, Graduate School for Medicine, Kyoto University, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto, 606-8507 Japan
| | - Akira Andoh
- Division of Gastroenterology and Hematology, Department of Medicine, Shiga University of Medical Science, Setatsukinowacho, Otsu, Shiga 520-2192 Japan
| | - Hideyo Hirai
- Department of Transfusion Medicine and Cell Therapy, Kyoto University Hospital, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto, 606-8507 Japan
| | - Taira Maekawa
- Department of Transfusion Medicine and Cell Therapy, Kyoto University Hospital, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto, 606-8507 Japan
| | - Tatsuo Ichinohe
- Department of Hematology and Oncology, Research Institute for Radiation Biology and Medicine, Hiroshima University, 1-2-3 Kasumi, Minamiku, Hiroshima, 734-8553 Japan
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