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Zeng H, Zhou S, Cai W, Kang M, Zhang P. LncRNA SNHG1: role in tumorigenesis of multiple human cancers. Cancer Cell Int 2023; 23:198. [PMID: 37684619 PMCID: PMC10492323 DOI: 10.1186/s12935-023-03018-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 08/06/2023] [Indexed: 09/10/2023] Open
Abstract
Small nucleolar RNA host gene 1 (SNHG1) is an important member of the SNHG family. This family is composed of a group of host genes that can be processed into small nucleolar RNAs and play important biological functions. In an oncogenic role, the SNHG1 expression is increased in various cancers, which has immense application prospects in the diagnosis, treatment, and prognosis of malignant tumors. In this review, we have summarized the role and molecular mechanism of SNHG1 in the development of various cancers. In addition, we have emphasized the clinical significance of SNHG1 in cancers in our article. This molecule is expected to be a new marker for potential usage in the diagnosis, prognosis, and treatment of cancer.
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Affiliation(s)
- Huang Zeng
- School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China
| | - Shouang Zhou
- School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China
| | - Weiqiang Cai
- School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China
| | - Mingqiang Kang
- Department of Thoracic Surgery, Fujian Medical University Union Hospital, 29 Xinquan Road, Gulou, Fuzhou, 350001, China.
| | - Peipei Zhang
- Department of Thoracic Surgery, Fujian Medical University Union Hospital, 29 Xinquan Road, Gulou, Fuzhou, 350001, China.
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2
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Zielske SP, Chen W, Ibrahim KG, Cackowski FC. SNHG1 opposes quiescence and promotes docetaxel sensitivity in prostate cancer. BMC Cancer 2023; 23:672. [PMID: 37464317 DOI: 10.1186/s12885-023-11006-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Accepted: 05/25/2023] [Indexed: 07/20/2023] Open
Abstract
BACKGROUND A majority of prostate cancer cells are in a non-proliferating, G0 (quiescent) phase of the cell cycle and may lie dormant for years before activation into a proliferative, rapidly progressing, disease phase. Many mechanisms which influence proliferation and quiescence choices remain to be elucidated, including the role of non-coding RNAs. In this study, we investigated the role of a long non-coding RNA (lncRNA), SNHG1, on cell proliferation, quiescence, and sensitivity to docetaxel as a potential factor important in prostate cancer biology. METHODS Publically available, anonymous, clinical data was obtained from cBioPortal for analysis. RNAi and prostate cancer cell lines were utilized to investigate SNHG1 in vitro. We measured G0 cells, DNA synthesis, and cell cycle distribution by flow cytometry. Western blotting was used to assess G2 arrest and apoptosis. These parameters were also investigated following docetaxel treatment. RESULTS We discovered that in prostate cancer patients from The Cancer Genome Atlas (TCGA) data set, high SNHG1 expression in localized tumors correlated with reduced progression-free survival, and in a data set of both primary and metastatic tumors, high SNHG1 expression was associated with metastatic tumors. In vitro analysis of prostate cancer cell lines showed SNHG1 expression correlated with a quiescent versus proliferative phenotype. Knockdown of SNHG1 by RNAi in PC3 and C4-2B cells resulted in an accumulation of cells in the G0 phase. After knockdown, 60.0% of PC3 cells were in G0, while control cultures had 13.2% G0. There were reciprocal decreases in G1 phase, but little impact on the proportion of cells in S and G2/M phases, depending on cell line. DNA synthesis and proliferation were largely halted- decreasing by 75% and 81% in C4-2B and PC3 cells, respectively. When cells were treated with docetaxel, SNHG1-depleted C4-2B and PC3 cells were resistant to G2 arrest, and displayed reduced apoptosis, as indicated by reduced cyclin B1 and cleaved caspase 3, suggesting SNHG1 levels may modulate drug response. CONCLUSIONS Overall, these results indicate SNHG1 has complex roles in prostate cancer, as it stimulates cell cycle entry and disease progression, but sensitizes cells to docetaxel treatment.
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Affiliation(s)
- Steven P Zielske
- Department of Oncology, Wayne State University and Karmanos Cancer Institute, 4100 John R, MI, 48201, Detroit, USA
| | - Wei Chen
- Department of Oncology, Wayne State University and Karmanos Cancer Institute, 4100 John R, MI, 48201, Detroit, USA
| | - Kristina G Ibrahim
- Department of Oncology, Wayne State University and Karmanos Cancer Institute, 4100 John R, MI, 48201, Detroit, USA
| | - Frank C Cackowski
- Department of Oncology, Wayne State University and Karmanos Cancer Institute, 4100 John R, MI, 48201, Detroit, USA.
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Chen F, Zhang F, Leng YF, Shi YJ, Zhang JM, Liu YQ. The crucial roles of long noncoding RNA SNHGs in lung cancer. CLINICAL & TRANSLATIONAL ONCOLOGY : OFFICIAL PUBLICATION OF THE FEDERATION OF SPANISH ONCOLOGY SOCIETIES AND OF THE NATIONAL CANCER INSTITUTE OF MEXICO 2022; 24:2272-2284. [PMID: 36008615 DOI: 10.1007/s12094-022-02909-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Accepted: 07/23/2022] [Indexed: 11/24/2022]
Abstract
Lung cancer is one of the most common malignant tumors with growing morbidity and mortality worldwide. Several treatments are used to manage lung cancer, including surgery, radiotherapy and chemotherapy, as well as molecular-targeted therapy. However, the current measures are still far from satisfactory. Therefore, the current research should focus on exploring the molecular mechanism and then finding an effective treatment. Interestingly, we and others have embarked on a line of investigations focused on the mechanism of lung cancer. Specifically, lncRNA small nucleolar RNA host gene has been shown to be associated with biological characteristics and therapeutic resistance of lung cancer. In addition, small nucleolar RNA host genes may be used as diagnostic biomarker in the future. Herein, we will provide a brief review demonstrating the importance of small nucleolar RNA host genes in lung cancer, especially non-small cell lung cancer. Although lncRNA has shown a crucial role in tumor-related research, a large number of studies are needed to validate its clinical application in the future.
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Affiliation(s)
- Feng Chen
- Department of Anesthesiology, First Hospital of Lanzhou University, 1 Donggang West Road, Chengguan District, Lanzhou, 730000, Gansu, China.,The First Clinical Medical College of Lanzhou University, Lanzhou, Gansu, China
| | - Fa Zhang
- Department of Urology, Gansu Provincial Hospital, 204 Donggang West Road, Chengguan District, Lanzhou, 730000, Gansu, China
| | - Yu-Fang Leng
- Department of Anesthesiology, First Hospital of Lanzhou University, 1 Donggang West Road, Chengguan District, Lanzhou, 730000, Gansu, China.
| | - Ya-Jing Shi
- Department of Anesthesiology, First Hospital of Lanzhou University, 1 Donggang West Road, Chengguan District, Lanzhou, 730000, Gansu, China
| | - Jian-Ming Zhang
- Department of Anesthesiology, First Hospital of Lanzhou University, 1 Donggang West Road, Chengguan District, Lanzhou, 730000, Gansu, China
| | - Yong-Qiang Liu
- Department of Anesthesiology, First Hospital of Lanzhou University, 1 Donggang West Road, Chengguan District, Lanzhou, 730000, Gansu, China
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Cao J, Xiao C, Fong CJTH, Gong J, Li D, Li X, Jie Y, Chong Y. Expression and Regulatory Network Analysis of Function of Small Nucleolar RNA Host Gene 4 in Hepatocellular Carcinoma. J Clin Transl Hepatol 2022; 10:297-307. [PMID: 35528985 PMCID: PMC9039712 DOI: 10.14218/jcth.2020.00175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 03/30/2021] [Accepted: 06/02/2021] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND AND AIMS Long non-coding RNA small nucleolar RNA host genes (SNHGs) play a critical role in the occurrence and development of tumors. In this study, we aimed to investigate the role of SNHG4 in hepatocellular carcinoma (HCC) and its underlining mechanism. METHODS Datasets were acquired from The Cancer Genome Atlas (TCGA) database. lncLocator 2.0 was used to identify the distribution of SNHG4 in HCC cells. Gene expression, Kaplan-Meier survival, microRNA and transcription factor target analyses were performed with the University of Alabama Cancer (UALCAN) Database, Kaplan-Meier Plotter, LinkedOmics, WebGestalt and gene set enrichment analysis, respectively. Gene Ontology and pathway enrichment analyses and assessment of RNA binding proteins were performed by R software, circlncRNAnet and Encyclopedia of RNA Interactomes (ENCORI). In addition, CirclncRNAnet and ENCORI were used to find the correlation between SNHG4 and important proteins, while the prognostic value was assessed with the Human Protein Atlas database and Kaplan-Meier Plotter. RESULTS Expression of SNHG4 in HCC is higher in HCC tissue than in normal healthy liver tissues and is mainly distributed in the nucleus. SNHG4 positively correlated with poor prognosis (p<0.01 for overall survival and recurrence-free survival). Functional enrichment analysis revealed SNHG4 involvement with regulation of ribosomal RNA synthesis and the RNA processing and surveillance pathway. SNHG4 is closely associated with miR-154 and miR-206, transcription factor target E2F family and the signaling pathway for MAPK/ERK and mTOR. U2 auxiliary factor 2 (U2AF2) showed strong correlation with SNHG4, while low-expression of U2AF2 showed good prognosis. CONCLUSIONS Based on our findings, we infer SNHG4 may play a role in the formation of HCC via regulation of tumor-related pathways.
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Affiliation(s)
- Jing Cao
- Department of Infectious Diseases, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Cuicui Xiao
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Christ-Jonathan Tsia Hin Fong
- Department of Gastroenterology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Jiao Gong
- Department of Laboratory Medicine, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Danyang Li
- Department of Infectious Diseases, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Xiangyong Li
- Department of Infectious Diseases, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Yusheng Jie
- Department of Infectious Diseases, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
- Correspondence to: Yusheng Jie and Yutian Chong, Department of Infectious Diseases, Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510630, China. ORCID: https://orcid.org/0000-0003-3756-0653 (YJ), https://orcid.org/0000-0001-8215-4393 (YC). Tel: +86-20-8525-2372, Fax: +86-20-8525-2250, E-mail: (YJ), (YC)
| | - Yutian Chong
- Department of Infectious Diseases, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
- Correspondence to: Yusheng Jie and Yutian Chong, Department of Infectious Diseases, Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510630, China. ORCID: https://orcid.org/0000-0003-3756-0653 (YJ), https://orcid.org/0000-0001-8215-4393 (YC). Tel: +86-20-8525-2372, Fax: +86-20-8525-2250, E-mail: (YJ), (YC)
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Liu Y, Chen X, Che Y, Li H, Zhang Z, Peng W, Yang J. LncRNAs as the Regulators of Brain Function and Therapeutic Targets for Alzheimer’s Disease. Aging Dis 2022; 13:837-851. [PMID: 35656102 PMCID: PMC9116922 DOI: 10.14336/ad.2021.1119] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Accepted: 11/19/2021] [Indexed: 11/13/2022] Open
Abstract
Alzheimer’s disease (AD) is the most common type of dementia and a serious threat to the health and safety of the elderly population. It has become an emerging public health problem and a major economic and social burden. However, there is currently no effective treatment for AD. Although the mechanism of AD pathogenesis has been investigated substantially, the full range of molecular factors that contribute to its development remain largely unclear. In recent years, accumulating evidence has revealed that long non-coding RNAs (lncRNAs), a type of non-coding RNA longer than 200 nucleotides, play important roles in multiple biological processes involved in AD pathogenesis. With the further exploration of genomics, the role of lncRNA in the pathogenesis of AD has been phenotypically or mechanistically studied. Herein, we systematically review the current knowledge about lncRNAs implicated in AD and elaborate on their main regulatory pathways, which may contribute to the discovery of novel therapeutic targets and drugs for AD.
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Affiliation(s)
- Yuqing Liu
- Department of Integrated Traditional Chinese & Western Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China.
- Xiangya School of Medicine, Central South University, Changsha, Hunan, China.
| | - Xin Chen
- Department of Integrated Traditional Chinese & Western Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China.
| | - Yutong Che
- Xiangya School of Medicine, Central South University, Changsha, Hunan, China.
| | - Hongli Li
- Department of Integrated Traditional Chinese & Western Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China.
| | - Zheyu Zhang
- Department of Integrated Traditional Chinese & Western Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China.
| | - Weijun Peng
- Department of Integrated Traditional Chinese & Western Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China.
- Inter-disciplinary Research Center of Language Intelligence and Cultural Heritages, Hunan University, Changsha, Hunan, China.
- Correspondence should be addressed to: Dr. Weijun Peng (E-mail: ) and Ms. Jingjing Yang (), Department of Integrated Traditional Chinese & Western Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
| | - Jingjing Yang
- Teaching and Research Section of Clinical Nursing, Xiangya Hospital, Central South University, Changsha, China.
- Xiangya Nursing School, Central South University, Changsha, China.
- Correspondence should be addressed to: Dr. Weijun Peng (E-mail: ) and Ms. Jingjing Yang (), Department of Integrated Traditional Chinese & Western Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
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Taghizadeh E, Gheibihayat SM, Taheri F, Afshani SM, Farahani N, Saberi A. LncRNAs as putative biomarkers and therapeutic targets for Parkinson's disease. Neurol Sci 2021; 42:4007-4015. [PMID: 34254198 DOI: 10.1007/s10072-021-05408-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Accepted: 06/13/2021] [Indexed: 11/29/2022]
Abstract
Parkinson's disease (PD) is known as one of the most common degenerative disorders related to the damage of the central nervous system (CNS). This brain disorder is also characterized by the formation of Lewy bodies in the cytoplasm of the dopaminergic neurons in the substantia nigra pars compacta (SNc), which consequently leads to motor and non-motor symptoms. With regard to the growing trend in the number of cases with PD and its effects on individuals, families, and communities, immediate treatments together with diagnostic methods are required. In this respect, long non-coding ribonucleic acids (lncRNAs) represent a large class of ncRNAs with more than 200 nucleotides in length, playing key roles in some important processes including gene expression, cell differentiation, genomic imprinting, apoptosis, and cell cycle. They are highly expressed in the CNS and previous studies have further reported that the expression profile of lncRNAs is disrupted in human diseases such as neurodegenerative disorders. Since the levels of some lncRNAs change over time in the brains of patients with PD, a number of previous studies have examined their potentials as biomarkers for this brain disorder. Therefore, the main purpose of this study was to review the advances in the related literature on lncRNAs as diagnostic, therapeutic, and prognostic biomarkers for PD.
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Affiliation(s)
- Eskandar Taghizadeh
- Department of Medical Genetics, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran. .,Cellular and Molecular Research Center, Yasuj University of Medical Sciences, Yasuj, Iran.
| | - Seyed Mohammad Gheibihayat
- Department of Biotechnology, School of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Forough Taheri
- Islamic Azad University (Shahrekord Branch), Shahrekord, Iran
| | - Seyed Mohammadreza Afshani
- Department of Cardiology, Imam Khomeini Hospital, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Najmeh Farahani
- Department of Genetics and Molecular Biology, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Alihossein Saberi
- Department of Medical Genetics, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
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Kuang S, Wang L. Identification and analysis of consensus RNA motifs binding to the genome regulator CTCF. NAR Genom Bioinform 2021; 2:lqaa031. [PMID: 33575587 PMCID: PMC7671415 DOI: 10.1093/nargab/lqaa031] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 03/21/2020] [Accepted: 04/28/2020] [Indexed: 12/14/2022] Open
Abstract
CCCTC-binding factor (CTCF) is a key regulator of 3D genome organization and gene expression. Recent studies suggest that RNA transcripts, mostly long non-coding RNAs (lncRNAs), can serve as locus-specific factors to bind and recruit CTCF to the chromatin. However, it remains unclear whether specific sequence patterns are shared by the CTCF-binding RNA sites, and no RNA motif has been reported so far for CTCF binding. In this study, we have developed DeepLncCTCF, a new deep learning model based on a convolutional neural network and a bidirectional long short-term memory network, to discover the RNA recognition patterns of CTCF and identify candidate lncRNAs binding to CTCF. When evaluated on two different datasets, human U2OS dataset and mouse ESC dataset, DeepLncCTCF was shown to be able to accurately predict CTCF-binding RNA sites from nucleotide sequence. By examining the sequence features learned by DeepLncCTCF, we discovered a novel RNA motif with the consensus sequence, AGAUNGGA, for potential CTCF binding in humans. Furthermore, the applicability of DeepLncCTCF was demonstrated by identifying nearly 5000 candidate lncRNAs that might bind to CTCF in the nucleus. Our results provide useful information for understanding the molecular mechanisms of CTCF function in 3D genome organization.
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Affiliation(s)
- Shuzhen Kuang
- Department of Genetics and Biochemistry, Clemson University, Clemson, SC 29634, USA.,Department of Biological Sciences, Clemson University, Clemson, SC 29634, USA
| | - Liangjiang Wang
- Department of Genetics and Biochemistry, Clemson University, Clemson, SC 29634, USA
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Long noncoding RNA SNHG1 promotes human prostate cancer progression by sponging miR-383-5p. Anticancer Drugs 2021; 32:286-295. [PMID: 33470616 DOI: 10.1097/cad.0000000000000916] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Prostate cancer is the most common urinary malignancy in males. Long noncoding RNA small nucleolar RNA host gene 1 (lncRNA SNHG1) has been reported to play a crucial role in the development of various cancers. However, the understanding of SNHG1 in prostate cancer is still limited and needs further investigation. In this study, we found the level of SNHG1 was significantly upregulated in prostate cancer tissues and cells. Knockdown of SNHG1 significantly suppressed proliferation, migration and invasion and promoted cell apoptosis in prostate cancer cells. In addition, knockdown of SNHG1 significantly downregulated proliferating cell nuclear antigen and upregulated cleaved caspase-3. MiR-383-5p was identified to be a target of SNHG1 by bioinformatics analysis, dual-luciferase reporter assay, RNA immunoprecipitation assay and RNA pull-down assay. MiR-383-5p was significantly downregulated in prostate cancer tissues and cells. Inhibition of miR-383-5p could partially restore the effects of SNHG1 knockdown on prostate cancer cell proliferation, apoptosis, migration and invasion. Furthermore, murine xenograft models were established to investigate the effects of SNHG1 and miR-383-5p in tumorigenesis in vivo. We found SNHG1 knockdown or miR-383-5p overexpression repressed tumor growth in vivo. In conclusion, SNHG1 contributed to prostate cancer progression by targeting miR-383-5p, elucidating that SNHG1 might be a target for prostate cancer therapy.
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Pei ML, Zhao ZX, Shuang T. Dysregulation of lnc-SNHG1 and miR-216b-5p correlate with chemoresistance and indicate poor prognosis of serous epithelial ovarian cancer. J Ovarian Res 2020; 13:144. [PMID: 33302997 PMCID: PMC7731520 DOI: 10.1186/s13048-020-00750-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Accepted: 12/03/2020] [Indexed: 01/08/2023] Open
Abstract
Aim This study aimed to explore whether the dysregulation of lnc-small nucleolar RNA host gene 1 (SNHG1) and miR-216b-5p correlated with chemoresistance and indicated poor prognosis of serous epithelial ovarian cancer (EOC). Methods and results The expression of lnc-SNHG1 was upregulated, while miR-216b-5p showed low expression in patients with chemoresistant EOC compared with patients with chemosensitive EOC. The multivariate Cox regression analysis showed that the expression of miR-216b-5p and FIGO stage were independent prognostic factors for the overall survival (OS) of patients with serous EOC. Kaplan–Meier curves revealed a significant association of the increased expression level of lnc-SNHG1 with shorter OS and disease-free survival (DFS). Patients with a low expression level of miR-216b-5p also had shorter OS and DFS. The biological functions were tested using CCK-8 assay, colony formation assay, wound healing assay, and cell apoptosis. The knockdown of SNHG1 and the overexpression of miR-216b-5p stimulated paclitaxel sensitivity in A2780/Taxol cells through inhibiting cell growth and migration and promoting apoptosis. The inhibition of miR-216b-5p could rescue the effect of lnc-SNHG1 inhibition on the sensitivity of A2780/Taxol cells to paclitaxel. Luciferase reporter assay, RNA Binding Protein Immunoprecipitation Assay (RIP), and quantitative reverse transcription–polymerase chain reaction (qRT-PCR) indicated that lnc-SNHG1 acted as a sponge of miR-216b-5p in A2780/Taxol cells. Conclusions This study showed that the overexpression of lnc-SNHG1 and decreased expression level of miR-216b-5p correlated with the chemoresistance of patients with serous EOC and indicated shorter OS and DFS. Lnc-SNHG1 functioned as a ceRNA with miR-216b-5p, which was critical in modulating the paclitaxel sensitivity of ovarian cancer cells. Supplementary Information The online version contains supplementary material available at 10.1186/s13048-020-00750-4.
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Affiliation(s)
- Mei Li Pei
- Department of Gynecology and Obstetrics, The First Affiliated Hospital of Xi'an Jiao Tong University, Xi'an, 710061, China
| | - Zong Xia Zhao
- Department of Gynecology and Obstetrics, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China.,Department of Gynecology and Obstetrics, The Second Affiliated Hospital of Xi'an Medical University, Xi'an, 710038, China
| | - Ting Shuang
- Department of Gynecology and Obstetrics, The First Affiliated Hospital of Xi'an Jiao Tong University, Xi'an, 710061, China. .,Department of Gynecology and Obstetrics, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China.
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Epigenetic silencing of CDKN1A and CDKN2B by SNHG1 promotes the cell cycle, migration and epithelial-mesenchymal transition progression of hepatocellular carcinoma. Cell Death Dis 2020; 11:823. [PMID: 33009370 PMCID: PMC7532449 DOI: 10.1038/s41419-020-03031-6] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 09/15/2020] [Accepted: 09/16/2020] [Indexed: 02/06/2023]
Abstract
Enhanced SNHG1 (small nucleolar RNA host gene 1) expression has been found to play a critical role in the initiation and progression of hepatocellular carcinoma (HCC) with its detailed mechanism largely unknown. In this study, we show that SNHG1 promotes the HCC progression through epigenetically silencing CDKN1A and CDKN2B in the nucleus, and competing with CDK4 mRNA for binding miR-140-5p in the cytoplasm. Using bioinformatics analyses, we found hepatocarcinogenesis is particularly associated with dysregulated expression of SNHG1 and activation of the cell cycle pathway. SNHG1 was upregulated in HCC tissues and cells, and its knockdown significantly inhibited HCC cell cycle, growth, metastasis, and epithelial–mesenchymal transition (EMT) both in vitro and in vivo. Chromatin immunoprecipitation and RNA immunoprecipitation assays demonstrate that SNHG1 inhibit the transcription of CDKN1A and CDKN2B through enhancing EZH2 mediated-H3K27me3 in the promoter of CDKN1A and CDKN2B, thus resulting in the de-repression of the cell cycle. Dual-luciferase assay and RNA pulldown revealed that SNHG1 promotes the expression of CDK4 by competitively binding to miR-140-5p. In conclusion, we propose that SNHG1 formed a regulatory network to confer an oncogenic function in HCC and SNHG1 may serve as a potential target for HCC diagnosis and treatment.
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Xu J, Yang R, Hua X, Huang M, Tian Z, Li J, Lam HY, Jiang G, Cohen M, Huang C. lncRNA SNHG1 Promotes Basal Bladder Cancer Invasion via Interaction with PP2A Catalytic Subunit and Induction of Autophagy. MOLECULAR THERAPY. NUCLEIC ACIDS 2020; 21:354-366. [PMID: 32650234 PMCID: PMC7340968 DOI: 10.1016/j.omtn.2020.06.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 04/15/2020] [Accepted: 06/12/2020] [Indexed: 02/07/2023]
Abstract
Although basal muscle-invasive bladder cancers (MIBCs) are predominant, are more aggressive, and have bad prognoses, molecular mechanisms underlying how basal MIBC formation/progression have been barely explored. In the present study, SNHG1, a long non-coding RNA, was shown to be expressed at higher levels in basal MIBC cells than in other types of bladder BC cells, and its presence could promote basal MIBC cell invasion. The results revealed that SNHG1 specifically induced MMP2 expression via increasing its transcription and mRNA stability. In one mechanism, SNHG1 directly bound with PP2A catalytic subunit (PP2A-c) to inhibit interactions of PP2A-c with c-Jun and then promoted c-Jun phosphorylation that, in turn, mediated MMP2 transcription. In another mechanism, SNHG1 markedly induced autophagy in the cells via induction of increases in the abundance of autophagy-related proteins. The latter initiated autophagy and further abolished miR-34a stability, which reduced overall miR-34a binding directly to the 3' UTR of MMP2 mRNA, thereby promoting MMP2 mRNA stabilization. These results provided novel insight into understanding the specific functions of SNHG1 in basal MIBC. Such findings may ultimately prove highly significant for the design/synthesis of new SNHG1-based compounds for the treatment of basal MIBC patients.
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Affiliation(s)
- Jiheng Xu
- Department of Environmental Medicine, New York University School of Medicine, 341 East 25th Street, New York, NY 10010, USA
| | - Rui Yang
- Department of Environmental Medicine, New York University School of Medicine, 341 East 25th Street, New York, NY 10010, USA
| | - Xiaohui Hua
- Department of Environmental Medicine, New York University School of Medicine, 341 East 25th Street, New York, NY 10010, USA
| | - Maowen Huang
- Department of Environmental Medicine, New York University School of Medicine, 341 East 25th Street, New York, NY 10010, USA
| | - Zhongxian Tian
- Department of Environmental Medicine, New York University School of Medicine, 341 East 25th Street, New York, NY 10010, USA
| | - Jingxia Li
- Department of Environmental Medicine, New York University School of Medicine, 341 East 25th Street, New York, NY 10010, USA
| | - Hoi Yun Lam
- Department of Environmental Medicine, New York University School of Medicine, 341 East 25th Street, New York, NY 10010, USA
| | - Guosong Jiang
- Department of Environmental Medicine, New York University School of Medicine, 341 East 25th Street, New York, NY 10010, USA
| | - Mitchell Cohen
- Department of Environmental Medicine, New York University School of Medicine, 341 East 25th Street, New York, NY 10010, USA
| | - Chuanshu Huang
- Department of Environmental Medicine, New York University School of Medicine, 341 East 25th Street, New York, NY 10010, USA.
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12
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Long Non-coding RNAs (lncRNAs), A New Target in Stroke. Cell Mol Neurobiol 2020; 42:501-519. [PMID: 32865676 DOI: 10.1007/s10571-020-00954-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Accepted: 08/22/2020] [Indexed: 02/07/2023]
Abstract
Stroke has become the most disabling and the second most fatal disease in the world. It has been a top priority to reveal the pathophysiology of stroke at cellular and molecular levels. A large number of long non-coding RNAs (lncRNAs) are identified to be abnormally expressed after stroke. Here, we summarize 35 lncRNAs associated with stroke, and clarify their functions on the prognosis through signal transduction and predictive values as biomarkers. Changes in the expression of these lncRNAs mediate a wide range of pathological processes in stroke, including apoptosis, inflammation, angiogenesis, and autophagy. Based on the exploration of the functions and mechanisms of lncRNAs in stroke, more timely, accurate predictions and more effective, safer treatments for stroke could be developed.
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13
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Fang C, Wang L, Gong C, Wu W, Yao C, Zhu S. Long non-coding RNAs: How to regulate the metastasis of non-small-cell lung cancer. J Cell Mol Med 2020; 24:3282-3291. [PMID: 32048814 PMCID: PMC7131947 DOI: 10.1111/jcmm.15054] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 01/15/2020] [Accepted: 01/28/2020] [Indexed: 12/15/2022] Open
Abstract
Non–small‐cell lung cancer (NSCLC) has become the most lethal human cancer because of the high rate of metastasis. Hence, clarifying the molecular mechanism underlying NSCLC metastasis is very important to improve the prognosis of patients with NSCLC. Long non‐coding RNAs (LncRNAs) are a class of RNA molecules longer than 200 nucleotides, which can participate in diverse biological processes. About 18% of human LncRNAs were recently found to be associated with tumours. Many studies indicated that aberrant expression of LncRNAs played key roles in the progression and metastasis of NSCLC. According to the function in tumours, LncRNAs can be divided into two classes: oncogenic LncRNAs and tumour‐suppressor LncRNAs. In this review, we summarized the main molecular mechanism of LncRNAs regulating NSCLC metastasis, including three aspects: (a) LncRNAs interact with miRNAs as ceRNAs; (b) LncRNAs bind with target proteins; and (c) LncRNAs participate in the transduction of different signal pathways. Then, LncRNAs can exert their function to regulate the metastasis of NSCLC through influencing the progression of epithelial‐mesenchymal transition (EMT) and the properties of cancer stem cell (CSC). But, it is necessary to do some further research to demonstrate the LncRNAs particular regulatory mechanism of inhibiting the metastasis of NSCLC and explore new drugs targeting LncRNAs.
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Affiliation(s)
- Cheng Fang
- Center for Traditional Chinese Medicine and Immunology Research, Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Department of Immunology and Pathogenic Biology, School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Lixin Wang
- Center for Traditional Chinese Medicine and Immunology Research, Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Department of Immunology and Pathogenic Biology, School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Chenyuan Gong
- Center for Traditional Chinese Medicine and Immunology Research, Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Laboratory of Integrative Medicine, School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Wenbin Wu
- Experiment Animal Center, Experiment Center for Science and Technology, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Chao Yao
- Center for Traditional Chinese Medicine and Immunology Research, Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Department of Immunology and Pathogenic Biology, School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Shiguo Zhu
- Center for Traditional Chinese Medicine and Immunology Research, Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Department of Immunology and Pathogenic Biology, School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, Shanghai, China
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14
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Li X, Zheng H. LncRNA SNHG1 influences cell proliferation, migration, invasion, and apoptosis of non-small cell lung cancer cells via the miR-361-3p/FRAT1 axis. Thorac Cancer 2019; 11:295-304. [PMID: 31788970 PMCID: PMC6997013 DOI: 10.1111/1759-7714.13256] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 11/02/2019] [Accepted: 11/04/2019] [Indexed: 12/23/2022] Open
Abstract
Background Non‐small‐cell lung cancer (NSCLC) is the most lethal type of cancer. Long non‐coding RNAs (lncRNAs) and microRNAs (miRNAs) have been identified as crucial regulators in the development of NSCLC. The aim of our study was to explore the molecular mechanism of SNHG1 to enable better treatment for NSCLC patients. Methods Quantitative real‐time polymerase chain reaction (qRT‐PCR) was performed to detect the expression of Small nucleolar RNA host gene 1 (SNHG1), miR‐361‐3p and frequently rearranged in advanced T‐cell lymphomas 1 (FRAT1). The protein level of FRAT1 was measured by western blot assay. Cell proliferation was evaluated by methyl thiazolyl tetrazolium (MTT) assay. Cell apoptosis was assessed by flow cytometry assay. The number of migrated and invaded cells were counted by transwell assay. The relationship between miR‐361‐3p and SNHG1 or FRAT1 was confirmed by dual‐luciferase reporter assay. Results Our results indicated that SNHG1 and FRAT1 were highly expressed in NSCLC tissues and cells. SNHG1 silencing inhibited proliferation, induced apoptosis and blocked migration and invasion of NSCLC cells. Also, FRAT1 downregulation suppressed proliferation, promoted apoptosis and hindered migration and invasion of NSCLC cells. Further, FRAT1 could recover the effects of SNHG1 silencing on proliferation, apoptosis, migration and invasion of NSCLC cells. SNHG1 sponged miR‐361‐3p and negatively regulated miR‐361‐3p expression. Meanwhile, miR‐361‐3p targeted FRAT1 and inversely modulated FRAT1 expression. In addition, miR‐361‐3p inhibition abated the effect of SNHG1 knockdown on FRAT1 expression. Conclusion In conclusion, LncRNA SNHG1 promoted the proliferation, repressed apoptosis and enhanced migration and invasion of NSCLC cells by regulating FRAT1 expression via sponging miR‐361‐3p.
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Affiliation(s)
- Xiaomei Li
- Department of Respiratory and Critical Care Medicine, The First People's Hospital of Lianyungang, (Xuhzou Medical University Affiliated Hospital of Lianyungang, The First Affiliated Hospital of Kangda College of Nanjing Medical University) Lianyungang, Jiangsu, China
| | - Hong Zheng
- Department of Respiratory and Critical Care Medicine, The First People's Hospital of Lianyungang, (Xuhzou Medical University Affiliated Hospital of Lianyungang, The First Affiliated Hospital of Kangda College of Nanjing Medical University) Lianyungang, Jiangsu, China
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15
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Fu Y, Yin Y, Peng S, Yang G, Yu Y, Guo C, Qin Y, Zhang X, Xu W, Qin Y. Small nucleolar RNA host gene 1 promotes development and progression of colorectal cancer through negative regulation of miR-137. Mol Carcinog 2019; 58:2104-2117. [PMID: 31469189 PMCID: PMC6852404 DOI: 10.1002/mc.23101] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Revised: 07/30/2019] [Accepted: 08/05/2019] [Indexed: 12/11/2022]
Abstract
Small nucleolar RNA host gene 1 (SNHG1) is critical in the progression of cancers. However, the mechanism by which SNHG1 regulates the progression of colorectal cancer (CRC) remains unclear. Expressions of SNHG1 and miR‐137 in CRC tissues and cell lines were evaluated by quantitative real‐time polymerase chain reaction. A luciferase reporter gene assay was conducted to investigate miR‐137 target. Additionally, RNA pull‐down assay was performed to explore the physical association between miR‐137, SNHG1, and RNA induced silencing complex (RISC). Cell cycling and invasion were examined by flow cytometry (FCM) and transwell assays. The in vivo carcinogenic activity of SNHG1 was examined using murine xenograft models. Expression of RICTOR, serine/threonine kinase 1 (AKT), serum and glucocorticoid‐inducible kinase 1 (SGK1), p70S6K1, and LC3II/LC3I ratio was examined by Western blot analysis. SNHG1 upregulation was observed in CRC tissues and cell lines, which was associated with the lymph node metastasis, advanced TNM stage and poorer prognosis. SNHG1 increased RICTOR level in CRC via sponging miR‐137. In addition, SNHG1 silencing inhibited CRC cell proliferation and migration in vitro and in vivo. SNHG1 regulated RICTOR expression by sponging miR‐137 and promoted tumorgenesis in CRC.
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Affiliation(s)
- Yang Fu
- Department of Gastroenterology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Yuhan Yin
- Department of Gastroenterology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Sanfei Peng
- Department of Gastroenterology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Ge Yang
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Yang Yu
- Department of Gastroenterology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Changqing Guo
- Department of Gastroenterology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Yanru Qin
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Xiefu Zhang
- Department of Gastroenterology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Wen Xu
- State Key Laboratory of Bioreactor Engineering & Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai, Shanghai, China
| | - Yiyu Qin
- Research Centre of Biomedical Technology, Jiangsu Vocational College of Medicine, Yancheng, Jiangsu, China
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16
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Bai J, Xu J, Zhao J, Zhang R. lncRNA SNHG1 cooperated with miR-497/miR-195-5p to modify epithelial-mesenchymal transition underlying colorectal cancer exacerbation. J Cell Physiol 2019; 235:1453-1468. [PMID: 31276207 DOI: 10.1002/jcp.29065] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Accepted: 06/04/2019] [Indexed: 12/11/2022]
Abstract
Our study was intended to provide evidence for whether long noncoding RNA (lncRNA) SNHG1 would accelerate the epithelial-mesenchymal transition (EMT) course intrinsic in colorectal cancer (CRC) by sponging downstream miR-497-5p and miR-195-5p. We altogether collected 338 pairs of CRC and noncancerous tissues, and meanwhile purchased five CRC cell lines (i.e., SW480, HCT116, Lovo, CaCO-2, and HT29) and human embryo intestinal mucosal tissue-sourced cell line (i.e., CCC-HIE-2). The CRC cells as mentioned above were appraised regarding their potencies in proliferation, migration, and invasion, after being transfected with pcDNA3.1-SNHG1, si-SNHG1, miR-195-5p mimic/inhibitor, and miR-497-5p mimic/inhibitor. Eventually, we depended on reverse transcription-polymerase chain reaction to assess SNHG1, miR-497-5p, and miR-195-5p expressions, and the protein levels of EMT-specific molecules were determined on the strength of western blotting. It seemed that there was a high potential for highly expressed SNHG1 and lowly expressed miR-497/miR-195 to symbolize CRC patients' unfavorable prognosis (p < .05). Concurrently, CRC cells were detected with higher SNHG1 expression and lower miR-497/miR-195 expression than CCC-HIE-2 cells (p < .05). In addition, the EMT process of CRC cells was facilitated markedly against the contexts of overexpressed SNHG1 and underexpressed miR-497-5p/miR-195-5p. Intriguingly, the strength of miR-195-5p collaborating with miR-497-5p in affecting the activity of CRC cells seemed to overweigh that of miR-497/miR-195-5p alone. Besides, both miR-195-5p and miR-497-5p were subjected to in vivo and in vitro modification of SNHG1 (p < .05). Conclusively, application of lncRNA SNHG1 for treating CRC might be promising, given its dual modulation of miR-497 and miR-195 underlying CRC pathogenesis.
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Affiliation(s)
- Jinghui Bai
- Department of Internal Medicine, Cancer Hospital of China Medical University, Liaoning Cancer Hospital and Insititute, Shenyang, Liaoning, China
| | - Jian Xu
- Department of Colorectal Surgery, Cancer Hospital of China Medical University, Liaoning Cancer Hospital and Insititute, Shenyang, Liaoning, China
| | - Jian Zhao
- Department of Colorectal Surgery, Cancer Hospital of China Medical University, Liaoning Cancer Hospital and Insititute, Shenyang, Liaoning, China
| | - Rui Zhang
- Department of Colorectal Surgery, Cancer Hospital of China Medical University, Liaoning Cancer Hospital and Insititute, Shenyang, Liaoning, China
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17
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Carlevaro-Fita J, Johnson R. Global Positioning System: Understanding Long Noncoding RNAs through Subcellular Localization. Mol Cell 2019; 73:869-883. [PMID: 30849394 DOI: 10.1016/j.molcel.2019.02.008] [Citation(s) in RCA: 179] [Impact Index Per Article: 35.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 01/30/2019] [Accepted: 02/05/2019] [Indexed: 02/09/2023]
Abstract
The localization of long noncoding RNAs (lncRNAs) within the cell is the primary determinant of their molecular functions. LncRNAs are often thought of as chromatin-restricted regulators of gene transcription and chromatin structure. However, a rich population of cytoplasmic lncRNAs has come to light, with diverse roles including translational regulation, signaling, and respiration. RNA maps of increasing resolution and scope are revealing a subcellular world of highly specific localization patterns and hint at sequence-based address codes specifying lncRNA fates. We propose a new framework for analyzing sequencing-based data, which suggests that numbers of cytoplasmic lncRNA molecules rival those in the nucleus. New techniques promise to create high-resolution, transcriptome-wide maps associated with all organelles of the mammalian cell. Given its intimate link to molecular roles, subcellular localization provides a means of unlocking the mystery of lncRNA functions.
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Affiliation(s)
- Joana Carlevaro-Fita
- Department of Medical Oncology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland; Department for BioMedical Research, University of Bern, Bern, Switzerland
| | - Rory Johnson
- Department of Medical Oncology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland; Department for BioMedical Research, University of Bern, Bern, Switzerland.
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18
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Low Long Noncoding RNA Growth Arrest-Specific Transcript 5 Expression in the Exosomes of Lung Cancer Cells Promotes Tumor Angiogenesis. JOURNAL OF ONCOLOGY 2019; 2019:2476175. [PMID: 31186629 PMCID: PMC6521541 DOI: 10.1155/2019/2476175] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2018] [Accepted: 04/04/2019] [Indexed: 12/12/2022]
Abstract
Angiogenesis plays a key role in the development and progression of lung cancer. Recent studies have found that tumor cells can stimulate angiogenesis by secreting exosomes, which contain many long noncoding RNAs (lncRNAs), some of which are important for the development of lung cancer. However, the roles and mechanisms of exosomal lncRNAs in lung cancer angiogenesis have not yet been reported. In this study, lung cancer in mice was induced by urethane; we found that growth arrest specific 5 (GAS5) was lowly expressed in the serum exosomes and lung cancer tissues of mice with lung cancer. And there was a significant positive correlation between GAS5 expression in serum exosomes and lung cancer tissues. Furthermore, GAS5 was lowly expressed in human lung cancer tissues, lung cancer cells, and cells culture supernatant exosomes. The exosomes of lung cancer cells promoted human umbilical vein endothelial cells (HUVECs) proliferation and tube formation and inhibited their apoptosis. GAS5 overexpression in lung cancer cells increased GAS5 level in cell culture supernatant exosomes. And the exosomes of lung cancer cells containing high GAS5 level inhibited HUVECs proliferation and tube formation and increased their apoptosis. In addition, we found that GAS5 competitively bound miRNA-29-3p with phosphatase and tensin homolog (PTEN), upregulating PTEN mRNA and protein expression, and inhibited level of phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha (PI3K) and serine/threonine kinase 1 (AKT) phosphorylation in HUVECs. Overall, our results suggest that exosomal GAS5 could be a new therapeutic target for lung cancer which inhibits angiogenesis.
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19
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Sun L, Chu H, Li H, Liu Y. LncRNA SNHG1 correlates with higher T stage and worse overall survival, and promotes cell proliferation while reduces cell apoptosis in breast cancer. Transl Cancer Res 2019; 8:603-613. [PMID: 35116793 PMCID: PMC8798092 DOI: 10.21037/tcr.2019.03.20] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Accepted: 11/29/2018] [Indexed: 12/17/2022]
Abstract
Background The aim of this study was to investigate the correlation of long non-coding RNA (lncRNA) small nucleolar RNA host gene 1 (SNHG1) with the prognosis in breast cancer patients, and its effect on breast cancer cell proliferation and apoptosis. Methods A total of 178 breast cancer patients were consecutively recruited, then tumor tissue and the paired adjacent tissue were obtained during surgery for lncRNA SNHG1 determination by quantitative polymerase chain reaction (qPCR). LncRNA SNHG1 expression was also measured in breast cancer cell lines and normal breast epithelial cell line. Subsequently, negative control (NC) overexpression plasmids, lncRNA SNHG1 overexpression plasmids, NC short hairpin RNA (shRNA) plasmids and lncRNA SNHG1 shRNA plasmids were transfected into MDA-MB-453 cells as well as MCF7 cells, and cell proliferation and apoptosis were measured afterward. Results LncRNA SNHG1 expression in tumor tissue was increased compared with paired adjacent tissue, and it correlated with higher T stage and worse overall survival (OS) in breast cancer patients. LncRNA SNHG1 expression was also elevated in breast cancer cell lines compared with normal breast epithelial cell line. Cell Counting Kit-8 (CCK8) assay revealed that lncRNA SNHG1 overexpression promoted while lncRNA SNHG1 shRNA reduced cell proliferation, and Annexin V-fluorescein isothiocyanate/propidium iodide staining (AV/PI) assay illustrated that lncRNA SNHG1 overexpression decreased while lncRNA SNHG1 shRNA increased cell apoptosis rate. In addition, Western Blot assay disclosed that lncRNA SNHG1 overexpression downregulated while lncRNA SNHG1 shRNA upregulated pro-apoptotic marker (C-Caspase3) expression, and lncRNA SNHG1 overexpression increased while lncRNA SNHG1 shRNA decreased anti-apoptotic marker (p-P38) expression. Conclusions LncRNA SNHG1 is upregulated in tumor tissue and correlates with higher T stage and worse OS, and it promotes cell proliferation but inhibits cell apoptosis in breast cancer.
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Affiliation(s)
- Lin Sun
- Department of Thyroid and Breast Surgery, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan430014, China
| | - Huimin Chu
- Department of Thyroid and Breast Surgery, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan430014, China
| | - Hai Li
- Department of Thyroid and Breast Surgery, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan430014, China
| | - Yongjun Liu
- Department of Thyroid and Breast Surgery, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan430014, China
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20
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Xian J, Zhang Q, Guo X, Liang X, Liu X, Feng Y. A prognostic signature based on three non-coding RNAs for prediction of the overall survival of glioma patients. FEBS Open Bio 2019; 9:682-692. [PMID: 30984542 PMCID: PMC6443874 DOI: 10.1002/2211-5463.12602] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Revised: 01/21/2019] [Accepted: 01/24/2019] [Indexed: 12/11/2022] Open
Abstract
Recent studies have identified certain non‐coding RNAs (ncRNAs) as biomarkers of disease progression. Glioma is the most common primary intracranial cancer, with high mortality. Here, we developed a prognostic signature for prediction of overall survival (OS) of glioma patients by analyzing ncRNA expression profiles. We downloaded gene expression profiles of glioma patients along with their clinical information from the Gene Expression Omnibus and extracted ncRNA expression profiles via a microarray annotation file. Correlations between ncRNAs and glioma patients’ OS were first evaluated through univariate Cox regression analysis and a permutation test, followed by random survival forest analysis for further screening of valuable ncRNA signatures. Prognostic signatures could be established as a risk score formula by including ncRNA signature expression values weighted by their estimated regression coefficients. Patients could be divided into high risk and low risk subgroups by using the median risk score as cutoff. As a result, glioma patients with a high risk score tended to have shorter OS than those with low risk scores, which was confirmed by analyzing another set of glioma patients in an independent dataset. Additionally, gene set enrichment analysis showed significant enrichment of cancer development‐related biological processes and pathways. Our study may provide further insights into the evaluation of glioma patients’ prognosis.
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Affiliation(s)
- Junmin Xian
- Department of Neurosurgery The Affiliated Hospital of Qingdao University China.,Department of Neurosurgery Heze Municipal Hospital China
| | | | - Xiwen Guo
- Department of Neurosurgery Heze Municipal Hospital China
| | - Xiankun Liang
- Department of Neurosurgery Heze Municipal Hospital China
| | - Xinhua Liu
- School of Biomedical Engineering Tianjin Medical University China
| | - Yugong Feng
- Department of Neurosurgery The Affiliated Hospital of Qingdao University China
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21
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Thin KZ, Tu JC, Raveendran S. Long non-coding SNHG1 in cancer. Clin Chim Acta 2019; 494:38-47. [PMID: 30849309 DOI: 10.1016/j.cca.2019.03.002] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2018] [Revised: 03/02/2019] [Accepted: 03/04/2019] [Indexed: 12/17/2022]
Abstract
OBJECTIVES Long non-coding RNAs (lncRNAs) consist of a cluster of RNAs having >200 nucleotides lacking protein-coding function. Recent studies indicate that lncRNAs are involved in various cellular processes and their aberrant expression may lead to tumour development and progression. They may also serve as oncogenes or tumour suppressor genes in other diseases. In this review, we emphasize current investigations involving clinical management, tumour progression and the molecular mechanism of SNHG1 in human cancer. MATERIALS AND METHODS We investigate and summarize recent studies regarding the biologic functions and mechanisms of lncRNA SNHG1 in tumorigenesis. Related studies were obtained through a systematic search of google scholar, PubMed, Embase and Cochrane Library. RESULTS SNHG1 is a novel oncogenic lncRNA aberrantly expressed in different diseases including colorectal, liver, lung, prostate, gastric and esophageal cancers as well as ischemic stroke, nasopharyngeal carcinoma, laryngeal squamous cell carcinoma, neuroblastoma, renal cell carcinoma and osteosarcoma. Upregulation of SNHG1 was significantly associated with advanced tumour stage, tumour size, TNM stage and decreased overall survival. Furthermore, aberrant expression of SNHG1 contributes to cell proliferation, metastasis, migration and invasion of cancer cells. CONCLUSION SNHG1 likely acts as a useful tumour biomarker for cancer diagnosis, prognosis and treatment.
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Affiliation(s)
- Khaing Zar Thin
- Department of Medical Laboratory Technology, University of Medical Technology, Yankin Hill Road, 19(th) Street, Patheingyi Township, Mandalay, Myanmar; Department & Program of Clinical Laboratory Medicine, Center for Gene Diagnosis, Zhongnan Hospital of Wuhan University, Wuhan 430071, China.
| | - Jian Cheng Tu
- Department & Program of Clinical Laboratory Medicine, Center for Gene Diagnosis, Zhongnan Hospital of Wuhan University, Wuhan 430071, China.
| | - Sudheesh Raveendran
- Department of Radiology & Nuclear Medicine, Zhongnan Hospital of Wuhan University, Wuchang, Hubei province, Wuhan 430071, China.
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22
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Yang X, Zi XH. LncRNA SNHG1 alleviates OGD induced injury in BMEC via miR-338/HIF-1α axis. Brain Res 2018; 1714:174-181. [PMID: 30414401 DOI: 10.1016/j.brainres.2018.11.003] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2018] [Revised: 11/02/2018] [Accepted: 11/03/2018] [Indexed: 02/07/2023]
Abstract
BACKGROUND Brain microvascular endothelial cell (BMEC) is an important therapeutic target for the inhibition of brain vascular dysfunction in ischemic stroke. Expression of long non-coding RNA SNHG1 is reportedly upregulated in BMEC after OGD. The present study aims to investigate the potential roles of SNHG1 in OGD-induced injury in BMEC. METHODS Mice primary brain microvascular endothelial cells (BMEC) were cultured under "normal" or "oxygen/glucose-deprived" (OGD) conditions. The expression of SNHG1 and miR-338 after OGD were examined by qPCR. shRNA against SNHG1 was used to knockdown SNHG1 in BMEC. MiR-338-3p mimic and inhibitor were used to change the expression of miR-338 in BMEC. The relationship between SNHG1 and miR-338, and the relationship between miR-338 and HIF-1α were clarified using RNA pull-down and luciferase reporter gene assays, respectively. RESULTS SNHG1 and miR-338 were upregulated in OGD induced BMEC. SNHG1 silence aggravated OGD-induced cell apoptosis by down-regulating Bcl-2, HIF-1α and VEGF-A, and upregulating caspase 3 activity and Bax. MiR-338 was upregulated in SNHG1-silenced BMEC. RNA pull-down assays showed that SNHG1 could be directly bound by miR-338. In addition, miR-338 overexpression reduced cell viability in OGD while miR-338 inhibition protected BMEC against OGD-induced injury. Furthermore, luciferase reporter assay showed that HIF-1α was a direct target of miR-338. CONCLUSIONS SNHG1 exerted protective effects against OGD induced injury via sponging miR-338, thus upregulating HIF-1α/VEGF-A in BMEC.
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Affiliation(s)
- Xia Yang
- Department of Neurology, The Third Xiangya Hospital of Central South University, Changsha 410013, PR China
| | - Xiao-Hong Zi
- Department of Neurology, The Third Xiangya Hospital of Central South University, Changsha 410013, PR China.
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23
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He Z, Dang J, Song A, Cui X, Ma Z, Zhang Z. Identification of
LINC01234
and
MIR210HG
as novel prognostic signature for colorectal adenocarcinoma. J Cell Physiol 2018; 234:6769-6777. [PMID: 30362555 DOI: 10.1002/jcp.27424] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2018] [Accepted: 08/21/2018] [Indexed: 12/29/2022]
Affiliation(s)
- Zhiyun He
- Colorectal Surgical Department, Lanzhou University Second Hospital Lanzhou China
| | - Jie Dang
- Children’s Physical Examination Center, Lanzhou University Second Hospital Lanzhou China
| | - Ailin Song
- General Surgery Department, Lanzhou University Second Hospital Lanzhou China
| | - Xiang Cui
- Colorectal Surgical Department, Lanzhou University Second Hospital Lanzhou China
| | - Zhijun Ma
- Colorectal Surgical Department, Lanzhou University Second Hospital Lanzhou China
| | - Zhongtao Zhang
- General Surgical Department, Beijing Friendship Hospital Beijing China
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24
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Li D, Qian X, Xu P, Wang X, Li Z, Qian J, Yao J. Identification of lncRNAs and Their Functional Network Associated with Chemoresistance in SW1990/GZ Pancreatic Cancer Cells by RNA Sequencing. DNA Cell Biol 2018; 37:839-849. [PMID: 30113217 DOI: 10.1089/dna.2018.4312] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Affiliation(s)
- Duguang Li
- The Second Clinical College of Dalian Medical University, Dalian, China
| | - Xiaowei Qian
- Yangzhou University Medical College, Yangzhou, China
| | - Peng Xu
- Department of Hepatobiliary and Pancreatic Surgery, Northern Jiangsu People's Hospital, Clinic Medical College of Yangzhou University, Yangzhou, China
| | - Xiaodong Wang
- Department of Hepatobiliary and Pancreatic Surgery, Northern Jiangsu People's Hospital, Clinic Medical College of Yangzhou University, Yangzhou, China
| | - Zhennan Li
- Department of Hepatobiliary and Pancreatic Surgery, Northern Jiangsu People's Hospital, Clinic Medical College of Yangzhou University, Yangzhou, China
| | - Jianjun Qian
- Department of Hepatobiliary and Pancreatic Surgery, Northern Jiangsu People's Hospital, Clinic Medical College of Yangzhou University, Yangzhou, China
| | - Jie Yao
- Department of Hepatobiliary and Pancreatic Surgery, Northern Jiangsu People's Hospital, Clinic Medical College of Yangzhou University, Yangzhou, China
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Wang Z, Wang R, Wang K, Liu X. Upregulated long noncoding RNA Snhg1 promotes the angiogenesis of brain microvascular endothelial cells after oxygen–glucose deprivation treatment by targeting miR-199a. Can J Physiol Pharmacol 2018; 96:909-915. [PMID: 29883549 DOI: 10.1139/cjpp-2018-0107] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Angiogenesis after ischemic stroke has important clinical significance, which stimulates endogenous recovery mechanisms and improves the neurological outcome. Enhancing angiogenesis may facilitate the function recovery from ischemic stroke. Recent studies have shown that aberrant expression of long noncoding RNAs (lncRNAs) is related to angiogenesis after ischemic stroke. Snhg1, a cancer-related lncRNA, has been reported to be upregulated after stroke. However, little is known about its role in stroke. In this study, we performed in vitro experiments to investigate the effects of Snhg1 on cell survival and angiogenesis and molecular mechanism in ischemic stroke. Oxygen–glucose deprivation/reoxygenation (OGD/R) was used to mimic ischemia/reperfusion injury in vitro. Sngh1 was increased in brain microvascular endothelial cells (BMECs) with the prolongation of exposure to OGD, and promoted BMEC survival under OGD/R condition, and angiogenesis after OGD/R treatment. miR-199a was identified and validated to be a direct target of Snhg1, and function effects of Snhg1 on BMEC survival and angiogenesis depended on miR-199a, which is involved in the regulation of hypoxia inducible factor and vascular endothelial cell growth factor expression. These findings contribute to a better understanding of the pathogenesis of ischemic stroke and facilitate the development of proangiogenesis therapy for this disease.
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Affiliation(s)
- Zhengfeng Wang
- Department of Neurosurgery, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Ruihua Wang
- Department of Nuclear Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Kai Wang
- Department of Neurosurgery, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Xianzhi Liu
- Department of Neurosurgery, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
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26
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Zhang Y, Jin X, Wang Z, Zhang X, Liu S, Liu G. Downregulation of SNHG1 suppresses cell proliferation and invasion by regulating Notch signaling pathway in esophageal squamous cell cancer. Cancer Biomark 2018; 21:89-96. [PMID: 29081407 DOI: 10.3233/cbm-170286] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND Long non-coding RNAs (lncRNAs) exert important functions involved in tumorigenesis and cancer progression including esophageal squamous cell cancer (ESCC), however, the clinical role and underlying biological function of Small Nucleolar RNA Host Gene 1 (SNHG1) in ESCC is not well known. METHODS Quantitative Real-time polymerase chain reaction (QRT-PCR) was used to detect the SNHG1 expression levels in ESCC tissues and adjacent non-cancerous tissues. Chi-square test was used to evaluate the association between clinicopathological features and SNHG1 expression in ESCC patients, Kaplan-Meier curve and log rank test was performed to analyze the association between overall survival and SNHG1 expression. Cell proliferation and invasion was assessed by MTT assay, colony formation, and transwell cell invasion assays. Western blot were also performed to examine protein expression levels of E-cadherin, Vimentin and N-cadherin, Notch 1 and Hes-1. RESULTS We demonstrated that lncRNA SNHG1 was significantly up-regulated in ESCC tissues compared with adjacent non-cancerous tissues in ESCC patients. Meanwhile, increased lncRNA SNHG1 expression levels markedly correlated with lymph node metastasis, depth of invasion, TNM stage and reduced over survival time in ESCC patients. Furthermore, MTT assay, colony formation, transwell cell invasion, qRT-PCR and Western-blot assays demonstrated that knockdown of lncRNA SNHG1 could inhibit cell proliferation and cell invasion capacity and cell Epithelial-Mesenchymal Transition (EMT) phenomenon by up-regulation E-cadherin and down-regulating Vimentin and N-cadherin in ESCC cells. Besides, we demonstrated that knockdown of SNHG1 suppressed the Notch signaling pathway by reducing the Notch1 and Hes-1 expression levels in ESCC cells. CONCLUSIONS These results indicated that lncRNA SNHG1 may be a potential predictor of prognosis in ESCC patients and a novel target for ESCC treatment.
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Affiliation(s)
- Yijun Zhang
- Department of Thoracic, Jilin Cancer Hospital, Changchun, Jilin, China
| | - Xintian Jin
- Department of Thoracic, Jilin Cancer Hospital, Changchun, Jilin, China
| | - Zhe Wang
- Department of Thoracic, Jilin Cancer Hospital, Changchun, Jilin, China
| | - Xiaokai Zhang
- Department of Thoracic, Jilin Cancer Hospital, Changchun, Jilin, China
| | - Shen Liu
- Department of Pharmacy, Jilin Cancer Hospital, Changchun, Jilin, China
| | - Gang Liu
- Department of Thoracic, Jilin Cancer Hospital, Changchun, Jilin, China
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27
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Gao S, Xu X, Wang Y, Zhang W, Wang X. Diagnostic utility of plasma lncRNA small nucleolar RNA host gene 1 in patients with hepatocellular carcinoma. Mol Med Rep 2018; 18:3305-3313. [PMID: 30066898 PMCID: PMC6102699 DOI: 10.3892/mmr.2018.9336] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Accepted: 06/12/2018] [Indexed: 12/13/2022] Open
Abstract
Long non-coding RNAs (lncRNAs) offer great potential as cancer biomarkers. Owing to the limited sensitivity and specificity of α-fetoprotein (AFP) for the diagnosis of hepatocellular carcinoma (HCC), the present study used an lncRNA microarray to screen aberrantly expressed lncRNAs in HCC tissues. Subsequently, the expression profile of the target lncRNAs was investigated in plasma from patients with HCC or hepatitis B virus-positive chronic hepatitis and cirrhosis (HCH), as well as from healthy volunteers. A total of six aberrantly expressed lncRNAs were identified in HCC tissues and corresponding normal tissues, from which only small nucleolar RNA host gene 1 (SNHG1) expression in HCC tissues demonstrated a good correlation with those in plasma from HCC patients. Subsequent analysis revealed that high plasma SNHG1 expression levels were correlated with tumor size, TNM stage and AFP levels. Receiver operating characteristic analysis demonstrated that SNHG1 yields an excellent diagnostic ability to differentiate between patients with HCC and unaffected control patients, which was superior to that of AFP. The combination of SNHG1 with AFP may be able to distinguish HCC from HCH or healthy volunteers with the area under the curve values of 0.86 and 0.97, respectively. In summary, it was demonstrated that plasma SNHG1 has great potential as a sensitive and reliable biomarker for the diagnosis of HCC.
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Affiliation(s)
- Shoubao Gao
- Department of Oncology, The Third Affiliated Hospital of Qiqihar Medical University, Qiqihar, Heilongjiang 161021, P.R. China
| | - Xiaohong Xu
- Department of Clinical Laboratory, The Third Affiliated Hospital of Qiqihar Medical University, Qiqihar, Heilongjiang 161021, P.R. China
| | - Yue Wang
- Medical School of Nanchang University, Nanchang, Jiangxi 330031, P.R. China
| | - Wei Zhang
- Department of Oncology, The Third Affiliated Hospital of Qiqihar Medical University, Qiqihar, Heilongjiang 161021, P.R. China
| | - Xingye Wang
- Department of Clinical Laboratory, The Third Affiliated Hospital of Qiqihar Medical University, Qiqihar, Heilongjiang 161021, P.R. China
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28
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Upregulation of the Long Noncoding RNA SNHG3 Promotes Lung Adenocarcinoma Proliferation. DISEASE MARKERS 2018; 2018:5736716. [PMID: 30154938 PMCID: PMC6081568 DOI: 10.1155/2018/5736716] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Revised: 04/11/2018] [Accepted: 05/14/2018] [Indexed: 12/14/2022]
Abstract
Lung cancer is the leading cause of cancer-associated mortalities worldwide. Non-small-cell lung cancer (NSCLC) is the main reason for cancer-relevant death and constitutes 80% of lung cancer cases. Long noncoding RNAs (lncRNAs) have been found to be related to different kinds of cancer. Long noncoding RNAs played important roles in regulating the pathological and physiological processes of numerous cancers. To explore novel lung adenocarcinoma-associated lncRNAs, we analyzed the TCGA database and found that the lncRNA SNHG3 was significantly upregulated in lung adenocarcinoma. Bioinformatic analysis showed that SNHG3 may play key roles in regulating RNA splicing, tRNA processing, signal transduction, cell adhesion, transcription, and apoptosis. We also performed functional experiments to explore the roles of SNHG3 in lung adenocarcinoma cells. We found that SNHG3 promoted proliferation, cell cycle, and suppressed cell apoptosis of lung adenocarcinoma, suggesting that SNHG3 acted as an oncogene in lung adenocarcinoma. We believe that this study will provide a potential new therapeutic and prognostic target for lung adenocarcinoma.
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29
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Yang Z, Tang Y, Lu H, Shi B, Ye Y, Xu G, Zhao Q. Long non-coding RNA reprogramming (lncRNA-ROR) regulates cell apoptosis and autophagy in chondrocytes. J Cell Biochem 2018; 119:8432-8440. [PMID: 29893429 DOI: 10.1002/jcb.27057] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Accepted: 04/23/2018] [Indexed: 12/14/2022]
Abstract
Long Non-Coding RNA Reprogramming (lncRNA-ROR) plays an important role in regulating various biologic processes, whereas the effect of lncRNA-ROR in osteoarthritis (OA) is little studied. This study aimed to explore lncRNA-ROR expression in articular cartilage and identify the functional mechanism of lncRNA-ROR in OA. OA cartilage tissues were obtained from 15 OA patients, and 6 normal cartilage tissues were set as controls. Chondrocytes were isolated from the collected cartilage tissues. lncRNA-ROR was knockdown in normal cells and overexpressed in OA cells. Cell viability was determined with Cell Counting Kit-8 assay, and apoptosis was measured using flow cytometric analysis. Moreover, proteins and mRNAs involved in this study were also measured using Western blotting and quantitative real-time PCR (qPCR). Level of lncRNA-ROR was decreased in OA compared with normal chondrocytes, and overexpression of lncRNA-ROR dramatically promoted cell viability of OA chondrocytes. In addition, knockdown lncRNA-ROR inhibited apoptosis and promoted autophagy of normal chondrocytes. Moreover, lncRNA-ROR inhibited the expression of p53 in both mRNA and protein levels. Furthermore, we revealed that lncRNA-ROR regulated apoptosis and autophagy of chondrocytes via HIF1α and p53. The results indicated that lncRNA-ROR played a critical role in the pathogenesis of OA, suggesting that lncRNA-ROR could serve as a new potential therapeutic target for OA.
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Affiliation(s)
- Zhongmeng Yang
- Department of Orthopedics, The Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai, Guangdong, China
| | - Yuxing Tang
- Department of Orthopedics, The Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai, Guangdong, China
| | - Huading Lu
- Department of Orthopedics, The Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai, Guangdong, China
| | - Bo Shi
- Department of Orthopedics, The Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai, Guangdong, China
| | - Yongheng Ye
- Department of Orthopedics, The Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai, Guangdong, China
| | - Guoyong Xu
- Department of Orthopedics, The Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai, Guangdong, China
| | - Qing Zhao
- Department of Orthopedics, The Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai, Guangdong, China
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30
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Yang H, Wang S, Kang YJ, Wang C, Xu Y, Zhang Y, Jiang Z. Long non-coding RNA SNHG1 predicts a poor prognosis and promotes colon cancer tumorigenesis. Oncol Rep 2018; 40:261-271. [PMID: 29749530 PMCID: PMC6059747 DOI: 10.3892/or.2018.6412] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2017] [Accepted: 04/23/2018] [Indexed: 02/06/2023] Open
Abstract
Colon cancer is the main cause of cancer mortality worldwide. Its poor prognosis is mainly ascribed to high recurrence rates. Identifying novel prognostic biomarkers and therapeutic key points for management is crucial and important. Long non-coding RNAs (lncRNAs) are a class of RNAs, which have various roles in carcinogenicity and molecular mechanisms. The lncRNA small nucleolar RNA host gene 1 (SNHG1) contributes to the promotion of tumor development, however, the connections between SNHG1 and colon cancer are still unclear. The aim of the present study was to investigate the clinical significance, the biological functions, and the potential mechanism of SNHG1 in colon cancer. In the present study, we referred to the Oncomine database and used RT-qPCR to determine that SNHG1 expression was significantly higher both in colon cancer tissues and cancerous cell lines than in normal samples. Cell functional experiments were performed after knockdown of SNHG1, including Cell Counting Kit-8 assay, colony formation assay, Transwell® assay, and flow cytometric analyses of cell apoptosis, which suggested that SNHG1 stimulated colon cancer cell proliferation, promoted cell invasion and migration, and inhibited apoptosis. Immunohistochemical staining and western blotting experiments revealed that in colon cancer cells with SNHG1 knockdown, β-catenin, c-Myc and cyclin D1 protein levels were decreased, while E-cadherin was increased, which suggested that SNHG1 promoted colon cancer cell proliferation, migration and invasion through the Wnt/β-catenin signaling pathway. Our results indicated that SNHG1 and its interrelated components may be future therapeutic targets of carcinoma of the colon.
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Affiliation(s)
- Huan Yang
- Department of Gastroenterology, The First Affiliated Hospital, Chongqing Medical University, Chongqing 400016, P.R. China
| | - Shuang Wang
- Department of Gastroenterology, Chongqing People's Hospital, Chongqing 400016, P.R. China
| | - Yu-Jun Kang
- Department of Gastroenterology, Chongqing People's Hospital, Chongqing 400016, P.R. China
| | - Chuan Wang
- Department of Gastroenterology, Chongqing People's Hospital, Chongqing 400016, P.R. China
| | - Yongzhu Xu
- Chongqing Health Service Center, Chongqing 400000, P.R. China
| | - Yi Zhang
- Key Laboratory of Birth Defects and Reproductive Health, Chongqing Population and Family Planning of Chongqing Science and Technology Research Institute, Chongqing 400000, P.R. China
| | - Zheng Jiang
- Department of Gastroenterology, The First Affiliated Hospital, Chongqing Medical University, Chongqing 400016, P.R. China
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31
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Yan Y, Fan Q, Wang L, Zhou Y, Li J, Zhou K. LncRNA Snhg1, a non-degradable sponge for miR-338, promotes expression of proto-oncogene CST3 in primary esophageal cancer cells. Oncotarget 2018; 8:35750-35760. [PMID: 28423738 PMCID: PMC5482614 DOI: 10.18632/oncotarget.16189] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Accepted: 02/21/2017] [Indexed: 02/03/2023] Open
Abstract
Competing endogenous RNA (ceRNA) is a newly proposed mechanism that describes a crosstalk among lncRNAs, mRNAs and their shared miRNAs. In this study, the role of miR-338-3p (miR-338) in the progression of esophageal cancer and its involve in the ceRNA regulatory circuit lncRNA-Snhg1/CST3 were explored. MiR-338 displayed a 30% decreased expression in esophageal squamous cell carcinoma tissues compared with the adjacent. Then, proto-oncogene CST3 was predicted and validated as a target gene of miR-338. Gain-and-loss-function experiments indicated that miR-338 suppressed expression of CST3 protein (also Cystatin C, CysC), promoted expression of apoptotic proteins caspase-8/3, attenuated esophageal carcinoma cell growth and induced its apoptosis. In addition, lncRNA-Snhg1 was significantly upregulated in esophageal carcinoma tissues and promoted esophageal carcinoma cell growth. Furthermore, our results from bioinformatics, luciferase reporter gene and RNA pull-down assays indicated that Snhg1 could be directly bound by miR-338. Snhg1 acted as a non-degradable sponge to relieve the suppression on CST3 caused by miR-338. In conclusion, lncRNA-Snhg1 promoted cell proliferation by acting as a non-degradable sponge for the tumor suppressor miR-338 in esophageal cancer cells.
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Affiliation(s)
- Yan Yan
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Qingxia Fan
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Liping Wang
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yue Zhou
- Department of Medical Imaging, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Jianhua Li
- Department of General Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Kun Zhou
- Department of Thoracic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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32
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Zhang L, Luo X, Chen F, Yuan W, Xiao X, Zhang X, Dong Y, Zhang Y, Liu Y. LncRNA SNHG1 regulates cerebrovascular pathologies as a competing endogenous RNA through HIF-1α/VEGF signaling in ischemic stroke. J Cell Biochem 2018; 119:5460-5472. [PMID: 29377234 DOI: 10.1002/jcb.26705] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Accepted: 01/23/2018] [Indexed: 01/01/2023]
Abstract
Studies have shown that long noncoding ribonucleic acids (lncRNAs) play critical roles in multiple biologic processes. However, the Small Nucleolar RNA Host Gene 1 (SNHG1) function and underlying molecular mechanisms in ischemic stroke have not yet been reported. In the present study, we found that SNHG1 expression was remarkably increased both in isolated cerebral micro-vessels of a middle cerebral artery occlusion (MCAO) mice model, and in oxygen-glucose deprivation (OGD)-cultured mice brain micro-vascular endothelial cells (BMECs), meanwhile, the SNHG1 level was negatively correlated with miR-18a in MCAO mice. Mechanistically, SNHG1 inhibition presents larger brain infarct size and worsens neurological scores in MCAO mice. Consistent with the in vivo findings, SNHG1 inhibition also significantly increased caspase-3 activity and cell apoptosis in OGD-cultured BMECs. Furthermore, we found that SNHG1 functions as a competing endogenous RNA (ceRNA) for miR-18a, thereby regulating the de-repression of its endogenous target HIF-1α and promoting BMEC survival through HIF-1α/VEGF signaling. This study found a neuroprotective effect of SNHG1 mediated by HIF-1α/VEGF signaling through acting as a ceRNA for miR-18a. These findings reveal a novel function of SNHG1, which contributes to an extensive understanding of ischemic stroke and provides novel therapeutic options for this disease.
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Affiliation(s)
- Lin Zhang
- Department of Neurology, Xi'an Central Hospital, The Affiliated Hospital of Xi'an Jiaotong University College of Medicine, Xi'an, China
| | - Xianliang Luo
- Department of Medicine, Xi 'an Sixth Hospital, Xi'an, China
| | - Feng Chen
- Department of Neurosurgery, Jinhua Central Hospital, Jinhua, China
| | - Wei Yuan
- Department of Cardiology, Xi'an North Hospital, Xi'an, China
| | - Xinli Xiao
- Institute of neurobiology, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - Xiaohua Zhang
- Institute of neurobiology, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - Yaru Dong
- Department of Neurology, Xi'an Central Hospital, Xi'an, China
| | - Yuanxiao Zhang
- Department of Neurology, Xi'an Central Hospital, Xi'an, China
| | - Yong Liu
- Institute of neurobiology, Xi'an Jiaotong University Health Science Center, Xi'an, China
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33
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Boucherie C, Boutin C, Jossin Y, Schakman O, Goffinet AM, Ris L, Gailly P, Tissir F. Neural progenitor fate decision defects, cortical hypoplasia and behavioral impairment in Celsr1-deficient mice. Mol Psychiatry 2018; 23:723-734. [PMID: 29257130 PMCID: PMC5822457 DOI: 10.1038/mp.2017.236] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Revised: 07/21/2017] [Accepted: 08/17/2017] [Indexed: 01/09/2023]
Abstract
The development of the cerebral cortex is a tightly regulated process that relies on exquisitely coordinated actions of intrinsic and extrinsic cues. Here, we show that the communication between forebrain meninges and apical neural progenitor cells (aNPC) is essential to cortical development, and that the basal compartment of aNPC is key to this communication process. We found that Celsr1, a cadherin of the adhesion G protein coupled receptor family, controls branching of aNPC basal processes abutting the meninges and thereby regulates retinoic acid (RA)-dependent neurogenesis. Loss-of-function of Celsr1 results in a decreased number of endfeet, modifies RA-dependent transcriptional activity and biases aNPC commitment toward self-renewal at the expense of basal progenitor and neuron production. The mutant cortex has a reduced number of neurons, and Celsr1 mutant mice exhibit microcephaly and behavioral abnormalities. Our results uncover an important role for Celsr1 protein and for the basal compartment of neural progenitor cells in fate decision during the development of the cerebral cortex.
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Affiliation(s)
- C Boucherie
- Université catholique de Louvain, Institute of Neuroscience, Developmental Neurobiology, Brussels, Belgium
| | - C Boutin
- Université catholique de Louvain, Institute of Neuroscience, Developmental Neurobiology, Brussels, Belgium
| | - Y Jossin
- Université catholique de Louvain, Institute of Neuroscience, Mammalian Development and Cell Biology, Brussels, Belgium
| | - O Schakman
- Université catholique de Louvain, Institute of Neuroscience, Cell Physiology, Brussels, Belgium
| | - A M Goffinet
- Université catholique de Louvain, Institute of Neuroscience, Developmental Neurobiology, Brussels, Belgium
| | - L Ris
- Neuroscience Unit Research Institute for Health Sciences and Technology, University of Mons, Mons, Belgium
| | - P Gailly
- Université catholique de Louvain, Institute of Neuroscience, Cell Physiology, Brussels, Belgium
| | - F Tissir
- Université catholique de Louvain, Institute of Neuroscience, Developmental Neurobiology, Brussels, Belgium
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34
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Sahu D, Hsu CL, Lin CC, Yang TW, Hsu WM, Ho SY, Juan HF, Huang HC. Co-expression analysis identifies long noncoding RNA SNHG1 as a novel predictor for event-free survival in neuroblastoma. Oncotarget 2018; 7:58022-58037. [PMID: 27517149 PMCID: PMC5295409 DOI: 10.18632/oncotarget.11158] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2016] [Accepted: 07/28/2016] [Indexed: 12/21/2022] Open
Abstract
Despite of the discovery of protein therapeutic targets and advancement in multimodal therapy, the survival chance of high-risk neuroblastoma (NB) patients is still less than 50%. MYCN amplification is a potent driver of NB, which exerts its oncogenic activity through either activating or inhibiting the transcription of target genes. Recently, long noncoding RNAs (lncRNAs) are reported to be altered in cancers including NB. However, lncRNAs that are altered by MYCN amplification and associated with outcome in high-risk NB patients are limitedly discovered. Herein, we examined the expression profiles of lncRNAs and protein-coding genes between MYCN amplified and MYCN non-amplified NB from microarray (n = 47) and RNA-seq datasets (n = 493). We identified 6 lncRNAs in common that were differentially expressed (adjusted P ≤ 0.05 and fold change ≥ 2) and subsequently validated by RT-qPCR. The co-expression analysis reveals lncRNA, SNHG1 and coding gene, TAF1D highly co-expressed in NB. Kaplan-Meier analysis shows that higher expression of SNHG1 is significantly associated with poor patient survival. Importantly, multivariate analysis confirms high expression of SNHG1 as an independent prognostic marker for event-free survival (EFS) (HR = 1.58, P = 2.36E-02). In conclusion, our study unveils that SNHG1 is up-regulated by MYCN amplification and could be a potential prognostic biomarker for high-risk NB intervention.
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Affiliation(s)
- Divya Sahu
- Institute of Bioinformatics and Systems Biology, National Chiao Tung University, Hsinchu, Taiwan.,Bioinformatics Program, Taiwan International Graduate Program, Institute of Information Science, Academia Sinica, Taipei, Taiwan.,Institute of Biomedical Informatics, Center for Systems and Synthetic Biology, National Yang-Ming University, Taipei, Taiwan
| | - Chia-Lang Hsu
- Department of Life Science, National Taiwan University, Taipei, Taiwan
| | - Chen-Ching Lin
- Institute of Biomedical Informatics, Center for Systems and Synthetic Biology, National Yang-Ming University, Taipei, Taiwan
| | - Tz-Wen Yang
- Institute of Molecular and Cellular Biology, National Taiwan University, Taipei, Taiwan
| | - Wen-Ming Hsu
- Department of Surgery, National Taiwan University Hospital, Taipei, Taiwan
| | - Shinn-Ying Ho
- Institute of Bioinformatics and Systems Biology, National Chiao Tung University, Hsinchu, Taiwan.,Bioinformatics Program, Taiwan International Graduate Program, Institute of Information Science, Academia Sinica, Taipei, Taiwan.,Department of Biological Science and Technology, National Chiao Tung University, Hsinchu, Taiwan
| | - Hsueh-Fen Juan
- Department of Life Science, National Taiwan University, Taipei, Taiwan.,Institute of Molecular and Cellular Biology, National Taiwan University, Taipei, Taiwan.,Graduate Institute of Biomedical Electronics and Bioinformatics, National Taiwan University, Taipei, Taiwan
| | - Hsuan-Cheng Huang
- Bioinformatics Program, Taiwan International Graduate Program, Institute of Information Science, Academia Sinica, Taipei, Taiwan.,Institute of Biomedical Informatics, Center for Systems and Synthetic Biology, National Yang-Ming University, Taipei, Taiwan
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35
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Construction of differential mRNA-lncRNA crosstalk networks based on ceRNA hypothesis uncover key roles of lncRNAs implicated in esophageal squamous cell carcinoma. Oncotarget 2018; 7:85728-85740. [PMID: 27966444 PMCID: PMC5349869 DOI: 10.18632/oncotarget.13828] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2016] [Accepted: 11/18/2016] [Indexed: 12/14/2022] Open
Abstract
Increasing evidence has indicated that lncRNAs acting as competing endogenous RNAs (ceRNAs) play crucial roles in tumorigenesis, metastasis and diagnosis of cancer. However, the function of lncRNAs as ceRNAs involved in esophageal squamous cell carcinoma (ESCC) is still largely unknown. In this study, clinical implications of two intrinsic subtypes of ESCC were identified based on expression profiles of lncRNA and mRNA. ESCC subtype-specific differential co-expression networks between mRNAs and lncRNAs were constructed to reveal dynamic changes of their crosstalks mediated by miRNAs during tumorigenesis. Several well-known cancer-associated lncRNAs as the hubs of the two networks were firstly proposed in ESCC. Based on the ceRNA mechanism, we illustrated that the"loss" of miR-186-mediated PVT1-mRNA and miR-26b-mediated LINC00240-mRNA crosstalks were related to the two ESCC subtypes respectively. In addition, crosstalks between LINC00152 and EGFR, LINC00240 and LOX gene family were identified, which were associated with the function of "response to wounding" and "extracellular matrix-receptor interaction". Furthermore, functional cooperation of multiple lncRNAs was discovered in the two differential mRNA-lncRNA crosstalk networks. These together systematically uncovered the roles of lncRNAs as ceRNAs implicated in ESCC.
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36
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Fan RH, Guo JN, Yan W, Huang MD, Zhu CL, Yin YM, Chen XF. Small nucleolar host gene 6 promotes esophageal squamous cell carcinoma cell proliferation and inhibits cell apoptosis. Oncol Lett 2018; 15:6497-6502. [PMID: 29616119 DOI: 10.3892/ol.2018.8087] [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: 06/22/2016] [Accepted: 11/21/2017] [Indexed: 12/20/2022] Open
Abstract
Esophageal cancer (ESCC) is one of the most common causes of cancer-associated mortality in China. The present investigation reveals that non-coding RNAs (ncRNAs), including long ncRNAs (lncRNAs), exert a significant effect on the initiation, development and metastasis of malignant tumors, including ESCC. However, to the best of our knowledge, the function of non-protein-coding genes that host small nucleolar RNAs has not been investigated in cancer, particularly in ESCC. The expression of small nucleolar host gene 6 (SNHG6) in 70 ESCC tissues and paired adjacent tissues was measured by reverse transcription quantitative polymerase chain reaction. Analysis demonstrated that SNHG6 expression was significantly increased in ESCC tissues, and associated with tumor size (P=0.040) and Tumor-Node-Metastasis stage (P<0.01). Knockdown of SNHG6 may inhibit proliferative and colony-forming abilities, and induce apoptosis, in ESCC cells. To the best of our knowledge, the data from the present study indicated for the first time that SNHG6 was upregulated in ESCC tissues and cell lines. This novel lncRNA may exert a marked effect on the generation and progression of ESCC, potentially providing a novel perspective on ESCC diagnosis and management.
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Affiliation(s)
- Rui-Hua Fan
- Department of Medical Oncology, Huai'an First People's Hospital, Nanjing Medical University, Huai'an, Jiangsu 223300, P.R. China
| | - Jia-Ni Guo
- Department of Medical Oncology, Huai'an First People's Hospital, Nanjing Medical University, Huai'an, Jiangsu 223300, P.R. China
| | - Wei Yan
- Department of Gastroenterology, Huai'an First People's Hospital, Nanjing Medical University, Huai'an, Jiangsu 223300, P.R. China
| | - Ming-De Huang
- Department of Medical Oncology, Huai'an First People's Hospital, Nanjing Medical University, Huai'an, Jiangsu 223300, P.R. China
| | - Chang-Li Zhu
- Department of Medical Oncology, Huai'an First People's Hospital, Nanjing Medical University, Huai'an, Jiangsu 223300, P.R. China
| | - Yong-Mei Yin
- Department of Oncology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing, Jiangsu 210029, P.R. China
| | - Xiao-Fei Chen
- Department of Medical Oncology, Huai'an First People's Hospital, Nanjing Medical University, Huai'an, Jiangsu 223300, P.R. China
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Ribeiro DM, Zanzoni A, Cipriano A, Delli Ponti R, Spinelli L, Ballarino M, Bozzoni I, Tartaglia GG, Brun C. Protein complex scaffolding predicted as a prevalent function of long non-coding RNAs. Nucleic Acids Res 2018; 46:917-928. [PMID: 29165713 PMCID: PMC5778612 DOI: 10.1093/nar/gkx1169] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Revised: 11/03/2017] [Accepted: 11/07/2017] [Indexed: 11/14/2022] Open
Abstract
The human transcriptome contains thousands of long non-coding RNAs (lncRNAs). Characterizing their function is a current challenge. An emerging concept is that lncRNAs serve as protein scaffolds, forming ribonucleoproteins and bringing proteins in proximity. However, only few scaffolding lncRNAs have been characterized and the prevalence of this function is unknown. Here, we propose the first computational approach aimed at predicting scaffolding lncRNAs at large scale. We predicted the largest human lncRNA-protein interaction network to date using the catRAPID omics algorithm. In combination with tissue expression and statistical approaches, we identified 847 lncRNAs (∼5% of the long non-coding transcriptome) predicted to scaffold half of the known protein complexes and network modules. Lastly, we show that the association of certain lncRNAs to disease may involve their scaffolding ability. Overall, our results suggest for the first time that RNA-mediated scaffolding of protein complexes and modules may be a common mechanism in human cells.
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Affiliation(s)
- Diogo M Ribeiro
- Aix-Marseille Université, Inserm, TAGC UMR_S1090, Marseille, France
| | - Andreas Zanzoni
- Aix-Marseille Université, Inserm, TAGC UMR_S1090, Marseille, France
| | - Andrea Cipriano
- Dept. of Biology and Biotechnology Charles Darwin, Sapienza University, Rome, Italy
| | - Riccardo Delli Ponti
- Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Dr Aiguader 88, 08003 Barcelona, Spain
- Universitat Pompeu Fabra (UPF), 08003 Barcelona, Spain
| | - Lionel Spinelli
- Aix-Marseille Université, Inserm, TAGC UMR_S1090, Marseille, France
| | - Monica Ballarino
- Dept. of Biology and Biotechnology Charles Darwin, Sapienza University, Rome, Italy
| | - Irene Bozzoni
- Dept. of Biology and Biotechnology Charles Darwin, Sapienza University, Rome, Italy
| | - Gian Gaetano Tartaglia
- Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Dr Aiguader 88, 08003 Barcelona, Spain
- Universitat Pompeu Fabra (UPF), 08003 Barcelona, Spain
- Institucio Catalana de Recerca i Estudis Avançats (ICREA), 23 Passeig Lluıs Companys, 08010 Barcelona, Spain
| | - Christine Brun
- Aix-Marseille Université, Inserm, TAGC UMR_S1090, Marseille, France
- CNRS, Marseille, France
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Wu Y, Ding J, Sun Q, Zhou K, Zhang W, Du Q, Xu T, Xu W. Long noncoding RNA hypoxia-inducible factor 1 alpha-antisense RNA 1 promotes tumor necrosis factor-α-induced apoptosis through caspase 3 in Kupffer cells. Medicine (Baltimore) 2018; 97:e9483. [PMID: 29369172 PMCID: PMC5794356 DOI: 10.1097/md.0000000000009483] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Kupffer cells (KCs) play a crucial role in the pathogenesis of acute-on-chronic liver failure (ACLF) which is characterized by acute and severe disease in patients with preexisting liver disease and shows high mortality. Long noncoding RNAs (lncRNAs) are recently found to be involved in gene regulation. However, the mechanisms of how KCs are regulated by inflammatory factors, tumor necrosis factor-α (TNF-α), and whether lncRNAs are involved in the process remain largely unknown. Hence, we investigated the role of lncRNAs in the cytotoxicity of TNF-α on KCs.lncRNA array (The lncRNAs in the array are apoptosis-related lncRNAs reported in some research papers.) was used to identify lncRNAs related with liver fibrosis. Annexin V/protease inhibitor (PI) staining was used for detection of cell apoptosis. Real time-polymerase chain reaction was utilized for analysis of mRNA levels of lncRNA hypoxia-inducible factor 1 alpha-antisense RNA 1 (HIF1A-AS1) and apoptosis-related genes. Western blot was implied to the determination of lymphoid enhancer factor-1 (LEF-1).In this study, we found that HIF1A-AS1 could be upregulated by TNF-α by lncRNA array analysis and knockdown of HIF1A-AS1 significantly rescued cell apoptosis induced by TNF-α. Moreover, inhibition of HIF1A-AS1 markedly reduced mRNA level of caspase 3 which can be significantly enhanced by TNF-α. Furthermore, HIF1A-AS1 showed binding sites for LEF-1 and siRNA-mediated downregulation of LEF-1 decreased HIF1A-AS1 level in KCs treated with TNF-α.This study elucidates a new role of HIF1A-AS1 in TNF-α-induced cell apoptosis and provides potential therapeutic targets for ACLF.
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SNHG1 promotes cell proliferation by acting as a sponge of miR-145 in colorectal cancer. Oncotarget 2017; 9:2128-2139. [PMID: 29416759 PMCID: PMC5788627 DOI: 10.18632/oncotarget.23255] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Accepted: 12/05/2017] [Indexed: 02/07/2023] Open
Abstract
ncRNAs are important regulatory molecules and involve in many physiological cellular processes. Small nucleolar RNA host gene 1 (SNHG1) is a host to 8 snoRNAs and is located in 11q12.3 region of the chromosome. It has been reported to be involved in several cancers. However, the role of SNHG1 in the tumorigenesis of colorectal cancer is still unknown. In this study, SNHG1 was upregulated in colorectal cancers, and SNHG1 expression was correlated with advanced colorectal cancer stage and tumor recurrence. We found that SNHG1 promoted cell proliferation by acting as a sponge of miR-145, a well known tumor suppressor of colorectal cancer. Furthermore, the survival analysis indicated that colorectal cancer patients with higher expression of SNHG1 had a worse prognosis. These findings suggested that SNHG1 may act as a potential therapeutic target for the treatment of colorectal cancer.
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40
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Zhu Y, Li B, Liu Z, Jiang L, Wang G, Lv M, Li D. Up-regulation of lncRNA SNHG1 indicates poor prognosis and promotes cell proliferation and metastasis of colorectal cancer by activation of the Wnt/β-catenin signaling pathway. Oncotarget 2017; 8:111715-111727. [PMID: 29340086 PMCID: PMC5762354 DOI: 10.18632/oncotarget.22903] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Accepted: 11/16/2017] [Indexed: 01/05/2023] Open
Abstract
Recently, the lncRNA small nucleolar RNA host gene (SNHG1) has been exhibited to be upregulated, which plays a crucial role in the development and prognosis of several cancers. However, the role of the biology and clinical significance of SNHG1 in the tumorigenesis of colorectal cancer (CRC) has rarely been reported. In this work, we firstly found that SNHG1 expression levels were upregulated aberrantly in colorectal cancer tissues and colorectal cancer cell lines. By Kaplan-Meier survival analysis, patients with high SNHG1 expression level had poorer overall survival (OS) and progression-free survival (PFS) than those with low SNHG1 expression. In multivariate analysis, increased SNHG1 expression was proved to be an independent unfavorable prognostic indicator for CRC. In vitro experiments revealed that SNHG1 silencing inhibited the growth and metastasis and induced apoptosis of CRC cell lines. Finally, we found that SNHG1 may induce the activation of the WNT/β-catenin pathway through regulating β-catenin expression and transcription factor-4 (TCF-4), cyclin D1 and MMP-9. Altogether, our findings demonstrated that lncRNA SNHG1, was high expressed in colorectal cancer tissues and may serve as a tumor oncogene through regulating WNT/β-catenin signal pathway, which provided a candidate diagnostic biomarker and a promising therapeutic target for patients with CRC.
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Affiliation(s)
- Yuping Zhu
- Department of Colorectal Surgery, Zhejiang Cancer Hospital, Hangzhou 310022, Zhejiang Province, China
| | - Bo Li
- Department of Colorectal Surgery, Zhejiang Cancer Hospital, Hangzhou 310022, Zhejiang Province, China
| | - Zhuo Liu
- Department of Colorectal Surgery, Zhejiang Cancer Hospital, Hangzhou 310022, Zhejiang Province, China
| | - Lai Jiang
- Department of Colorectal Surgery, Zhejiang Cancer Hospital, Hangzhou 310022, Zhejiang Province, China
| | - Gang Wang
- Department of Colorectal Surgery, Zhejiang Cancer Hospital, Hangzhou 310022, Zhejiang Province, China
| | - Min Lv
- Department of Ultrasonic, Zhejiang Cancer Hospital, Hangzhou 310022, Zhejiang Province, China
| | - Dechuan Li
- Department of Colorectal Surgery, Zhejiang Cancer Hospital, Hangzhou 310022, Zhejiang Province, China
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Wang J, Cao L, Wu J, Wang Q. Long non-coding RNA SNHG1 regulates NOB1 expression by sponging miR-326 and promotes tumorigenesis in osteosarcoma. Int J Oncol 2017; 52:77-88. [PMID: 29115574 PMCID: PMC5743365 DOI: 10.3892/ijo.2017.4187] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2017] [Accepted: 10/08/2017] [Indexed: 01/17/2023] Open
Abstract
The long non-coding RNA (lncRNA) small nucleolar RNA host gene 1 (SNHG1) has been demonstrated to participate in the deterioration of many types of cancer. However, the underlying mechanisms of SNHG1-mediating functions in osteosarcoma (OS) have yet to be elucidated. In the present study, our results showed that SNHG1 was upregulated in OS tissues and cell lines, and high SNHG1 expression predicts poor overall survival of OS patients. Knockdown of SNHG1 inhibited cell growth and metastasis of OS in vitro and in vivo. Furthermore, our data demonstrated that there was reciprocal repression between SNHG1 and miR-326 which act as a tumor suppressor in OS cells, and exhibiting a strong negative relationship between SNHG1 and miR-326 expression in OS tissues. Additionally, we identified that SNHG1 increased human nin one binding protein (NOB1), an oncogene, through sponging miR-326 as competing endogenous RNA (ceRNA), finally prompting cell growth, migration and invasion in OS. Collectively, these findings not only uncovered that the SNHG1/miR-326/NOB1 signaling axis has a key role in OS progression but also suggested the potential application of SNHG1 and miR-326 as biomarkers in the OS diagnosis and treatment.
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Affiliation(s)
- Jiandong Wang
- Department of Trauma and Orthopedics, Trauma Emergency Center, Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai 200080, P.R. China
| | - Lei Cao
- Department of Trauma and Orthopedics, Trauma Emergency Center, Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai 200080, P.R. China
| | - Jianhong Wu
- Department of Trauma and Orthopedics, Trauma Emergency Center, Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai 200080, P.R. China
| | - Qiugen Wang
- Department of Trauma and Orthopedics, Trauma Emergency Center, Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai 200080, P.R. China
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Qin Y, Meng L, Fu Y, Quan Z, Ma M, Weng M, Zhang Z, Gao C, Shi X, Han K. SNORA74B gene silencing inhibits gallbladder cancer cells by inducing PHLPP and suppressing Akt/mTOR signaling. Oncotarget 2017; 8:19980-19996. [PMID: 28212545 PMCID: PMC5386738 DOI: 10.18632/oncotarget.15301] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Accepted: 01/08/2017] [Indexed: 01/17/2023] Open
Abstract
Small nucleolar RNAs (snoRNAs) have been implicated in the development of many cancers. We therefore examined the differential expression of snoRNAs between gallbladder cancer (GBC) tissues and matched adjacent non-tumor tissues using expression microarray analysis with confirmation by quantitative real-time PCR (qRT-PCR). Western blot analysis showed that SNORA74B levels were higher in GBC than non-tumor tissues. SNORA74B expression was positively associated with local invasion, advanced TNM stage, CA19-9 level, and Ki67 expression in patients with GBC, while it was negatively associated with expression of PHLPP, an endogenous Akt inhibitor. Moreover, SNORA74B expression was prognostic for overall survival (OS) and disease-free survival (DFS). Functional studies revealed that silencing SNORA74B in GBC cells using sh-SNORA74B suppressed cell proliferation, induced G1 arrest, and promoted apoptosis. Preliminary molecular investigation revealed that SNORA74B silencing inhibited activation of the AKT/mTOR signaling pathway, while increasing PHLPP expression. PHLPP depletion using shRNA abrogated sh-SNORA74B suppression of GBC cell proliferation, indicating that the antitumor effects of SNORA74B silencing were mediated by PHLPP. These findings define the important role of SNORA74B in cell proliferation, cell cycle, and apoptosis of GBC, and suggest that it may serve as a novel target for GBC treatment.
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Affiliation(s)
- Yiyu Qin
- Clinical College, Yancheng Institute of Health Sciences, Yancheng, Jiangsu 224000, China.,Research Centre of Biomedical Technology, Yancheng Institute of Health Sciences, Yancheng, Jiangsu 224000, China.,Department of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China.,Department of Environmental Genomics, Jiangsu Key Laboratory of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center For Cancer Personalized Medicine, Nanjing Medical University, Nanjing, China
| | - Li Meng
- Research Centre of Biomedical Technology, Yancheng Institute of Health Sciences, Yancheng, Jiangsu 224000, China
| | - Yang Fu
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, China
| | - Zhiwei Quan
- Department of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - Mingzhe Ma
- Department of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - Mingzhe Weng
- Department of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - Zhengdong Zhang
- Department of Environmental Genomics, Jiangsu Key Laboratory of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center For Cancer Personalized Medicine, Nanjing Medical University, Nanjing, China
| | - Cuixiang Gao
- Research Centre of Biomedical Technology, Yancheng Institute of Health Sciences, Yancheng, Jiangsu 224000, China
| | - Xinghua Shi
- Research Centre of Biomedical Technology, Yancheng Institute of Health Sciences, Yancheng, Jiangsu 224000, China
| | - Koulan Han
- Clinical College, Yancheng Institute of Health Sciences, Yancheng, Jiangsu 224000, China
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Liu Y, Yang Y, Li L, Liu Y, Geng P, Li G, Song H. LncRNA SNHG1 enhances cell proliferation, migration, and invasion in cervical cancer. Biochem Cell Biol 2017; 96:38-43. [PMID: 28930646 DOI: 10.1139/bcb-2017-0188] [Citation(s) in RCA: 112] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
OBJECTIVE This study investigated the effects of lncRNA SNHG1 on the proliferation, migration, and invasiveness of cervical cancer cells. METHODS Three pairs of cervical cancer tissue samples and their corresponding adjacent samples were analyzed using Human LncRNA Microarray V3.0 chip for differential analysis. The expression of SNHG1 in cervical cancer cell lines was verified by qRT-PCR. CCK8 assays and colony formation assays were used to study the changes in cell proliferation. Cell migration and Transwell assays were used to study changes in cell migration and invasiveness. RESULTS SNHG1 was highly expressed in cervical cancer tissues and cervical cancer cell lines. SNHG1 siRNA could knock-down the expression level of SNHG1 in cervical cancer cell lines HeLa and C33-A. After knock-down of SNHG1, cell proliferation and migration as well as invasiveness in HeLa and C-33A cells decreased. CONCLUSION LncRNA SNHG1 promotes the development of cervical cancer cells.
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Affiliation(s)
- Yang Liu
- Department of Gynaecology, Xuzhou Maternal & Child Health Care Hospital, Xuzhou 221009, Jiangsu, China.,Department of Gynaecology, Xuzhou Maternal & Child Health Care Hospital, Xuzhou 221009, Jiangsu, China
| | - Yanling Yang
- Department of Gynaecology, Xuzhou Maternal & Child Health Care Hospital, Xuzhou 221009, Jiangsu, China.,Department of Gynaecology, Xuzhou Maternal & Child Health Care Hospital, Xuzhou 221009, Jiangsu, China
| | - Lei Li
- Department of Gynaecology, Xuzhou Maternal & Child Health Care Hospital, Xuzhou 221009, Jiangsu, China.,Department of Gynaecology, Xuzhou Maternal & Child Health Care Hospital, Xuzhou 221009, Jiangsu, China
| | - Yuan Liu
- Department of Gynaecology, Xuzhou Maternal & Child Health Care Hospital, Xuzhou 221009, Jiangsu, China.,Department of Gynaecology, Xuzhou Maternal & Child Health Care Hospital, Xuzhou 221009, Jiangsu, China
| | - Peng Geng
- Department of Gynaecology, Xuzhou Maternal & Child Health Care Hospital, Xuzhou 221009, Jiangsu, China.,Department of Gynaecology, Xuzhou Maternal & Child Health Care Hospital, Xuzhou 221009, Jiangsu, China
| | - Guilin Li
- Department of Gynaecology, Xuzhou Maternal & Child Health Care Hospital, Xuzhou 221009, Jiangsu, China.,Department of Gynaecology, Xuzhou Maternal & Child Health Care Hospital, Xuzhou 221009, Jiangsu, China
| | - Hongjuan Song
- Department of Gynaecology, Xuzhou Maternal & Child Health Care Hospital, Xuzhou 221009, Jiangsu, China.,Department of Gynaecology, Xuzhou Maternal & Child Health Care Hospital, Xuzhou 221009, Jiangsu, China
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44
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Cui Y, Zhang F, Zhu C, Geng L, Tian T, Liu H. Upregulated lncRNA SNHG1 contributes to progression of non-small cell lung cancer through inhibition of miR-101-3p and activation of Wnt/β-catenin signaling pathway. Oncotarget 2017; 8:17785-17794. [PMID: 28147312 PMCID: PMC5392286 DOI: 10.18632/oncotarget.14854] [Citation(s) in RCA: 175] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Accepted: 01/11/2017] [Indexed: 01/01/2023] Open
Abstract
Lung cancer is the most common and aggressive tumor in the world. Long non-coding RNA small nucleolar RNA host gene 1 (lncRNA SNHG1) play critical roles in the progression of cancers. However, the function and underlying mechanism remain unclear in lung cancer. In the current study, we found that expression of SNHG1 was up-regulated in non-small cell lung cancer (NSCLC) tissues and cell lines. NSCLC patients with high SNHG1 expression were significantly correlated with larger tumor size, advanced TNM stage, lymph node metastasis and poor overall survival than patients with low SNHG1 expression. Furthermore, function assays showed that SNHG1 inhibition suppressed NSCLC cell proliferation both in vitro and in vivo. We also found that miR-101-3p could act as a target of SNHG1 in NSCLC and the inhibition of NSCLC progression induced by SNHG1 knockdown required the activity of miR-101-3p. In addition, we identified that SOX9 acted as a target of miR-101-3p, and SOX9 played the oncogenic role in NSCLC by activating Wnt/β-catenin signaling pathway. Taken together, our study suggested that lncRNA SNHG1 could promote NSCLC progression via miR-101-3p and SOX9. The SNHG1/miR-101-3p/SOX9/Wnt/β-catenin axis regulatory network might provide a potential new therapeutic strategy for lung cancer treatment.
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Affiliation(s)
- Yun Cui
- Department of Integrated Chinese and Western Medicine, Henan Provincial Cancer Hospital, Affiliated Tumor Hospital of Zhengzhou University, Zhengzhou, Henan, 450008, China
| | - Fuming Zhang
- Clinical Laboratory, People's Hospital of Zhengzhou University, Henan Provincial People's Hospital, Zhengzhou, Henan, 450008, China
| | - Chunkai Zhu
- Clinical Laboratory, People's Hospital of Zhengzhou University, Henan Provincial People's Hospital, Zhengzhou, Henan, 450008, China
| | - Liang Geng
- Department of Integrated Chinese and Western Medicine, Henan Provincial Cancer Hospital, Affiliated Tumor Hospital of Zhengzhou University, Zhengzhou, Henan, 450008, China
| | - Tongde Tian
- Department of Integrated Chinese and Western Medicine, Henan Provincial Cancer Hospital, Affiliated Tumor Hospital of Zhengzhou University, Zhengzhou, Henan, 450008, China
| | - Huaimin Liu
- Department of Integrated Chinese and Western Medicine, Henan Provincial Cancer Hospital, Affiliated Tumor Hospital of Zhengzhou University, Zhengzhou, Henan, 450008, China
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45
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LncSubpathway: a novel approach for identifying dysfunctional subpathways associated with risk lncRNAs by integrating lncRNA and mRNA expression profiles and pathway topologies. Oncotarget 2017; 8:15453-15469. [PMID: 28152521 PMCID: PMC5362499 DOI: 10.18632/oncotarget.14973] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Accepted: 01/10/2017] [Indexed: 02/01/2023] Open
Abstract
Long non-coding RNAs (lncRNAs) play important roles in various biological processes, including the development of many diseases. Pathway analysis is a valuable aid for understanding the cellular functions of these transcripts. We have developed and characterized LncSubpathway, a novel method that integrates lncRNA and protein coding gene (PCG) expression with interactome data to identify disease risk subpathways that functionally associated with risk lncRNAs. LncSubpathway identifies the most relevance regions which are related with risk lncRNA set and implicated with study conditions through simultaneously considering the dysregulation extent of lncRNAs, PCGs and their correlations. Simulation studies demonstrated that the sensitivity and false positive rates of LncSubpathway were within acceptable ranges, and that LncSubpathway could accurately identify dysregulated regions that related with disease risk lncRNAs within pathways. When LncSubpathway was applied to colorectal carcinoma and breast cancer subtype datasets, it identified cancer type- and breast cancer subtype-related meaningful subpathways. Further, analysis of its robustness and reproducibility indicated that LncSubpathway was a reliable means of identifying subpathways that functionally associated with lncRNAs. LncSubpathway is freely available at http://www.bio-bigdata.com/lncSubpathway/.
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46
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Hu Y, Ma Z, He Y, Liu W, Su Y, Tang Z. LncRNA-SNHG1 contributes to gastric cancer cell proliferation by regulating DNMT1. Biochem Biophys Res Commun 2017; 491:926-931. [PMID: 28754593 DOI: 10.1016/j.bbrc.2017.07.137] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2017] [Accepted: 07/24/2017] [Indexed: 12/24/2022]
Abstract
OBJECTIVE The objective of this study was to determine the expression of long-chain non-coding RNA SNHG1 (lncRNA-SNHG1) in gastric carcinoma and explore its function on cancer cell proliferation. METHODS The expression of lncRNA-SNHG1 in tumor tissues and corresponding adjacent tissues from 50 patients with gastric cancer was detected with realtime-PCR. The relationships between the expression of lncRNA-SNHG1 and clinicopathological features of gastric cancer patients were analyzed. Survival analysis was performed to study the correlation between lncRNA SNHG1 expression and patient prognosis. To assess the effect of LncRNA SNHG1 on proliferation in cancer cells, cell viability and colony formation assays were conducted when lncRNA SNHG1 was upregulated or downregulated by Lentivirus or plasmid in gastric cancer cells. Furthermore, in vivo tumor assay was performed to confirm the impact of lncRNA SNHG1 on proliferation of gastric cancer. RESULTS The expression of lncRNA SNHG1 in gastric cancer tissues was significantly higher than that in adjacent tissues and was correlated with TNM stage, T stage, and lymph node metastasis. The survival time of patients with higher expression level of lncRNA-SNHG1 was significantly lower than that of the lower expression level. LncRNA-SNHG1 accelerated the proliferation of gastric cancer cells obviously and increased the expression of DNMT1. CONCLUSION LncRNA SNHG1 promotes DNMT1 expression, which facilitates the gastric cancer proliferation.
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Affiliation(s)
- Yongbo Hu
- Department of General Surgery, Xiantao First People's Hospital Affiliated to Yangtze University, Xiantao, Hubei, China
| | - Zhen Ma
- Department of General Surgery, Xiantao First People's Hospital Affiliated to Yangtze University, Xiantao, Hubei, China
| | - Yiming He
- Department of General Surgery, Xiantao First People's Hospital Affiliated to Yangtze University, Xiantao, Hubei, China
| | - Wei Liu
- Department of General Surgery, Xiantao First People's Hospital Affiliated to Yangtze University, Xiantao, Hubei, China
| | - Yu Su
- Department of General Surgery, Xiantao First People's Hospital Affiliated to Yangtze University, Xiantao, Hubei, China
| | - Zongbin Tang
- Department of General Surgery, Xiantao First People's Hospital Affiliated to Yangtze University, Xiantao, Hubei, China.
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Sun X, Wang Z, Yuan W. Down-regulated long non-coding RNA SNHG1 inhibits tumor genesis of colorectal carcinoma. Cancer Biomark 2017; 20:67-73. [PMID: 28759957 DOI: 10.3233/cbm-170112] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Xiantao Sun
- Department of Colorectal Surgery, The First Affiliated Hospital and Institute of Clinical Medicine, Zhengzhou University, Zhengzhou 450052, Henan, China
| | - Zhimin Wang
- Department of Endocrinology, The First Affiliated Hospital and Institute of Clinical Medicine, Zhengzhou University, Zhengzhou 450052, Henan, China
| | - Weitang Yuan
- Department of Colorectal Surgery, The First Affiliated Hospital and Institute of Clinical Medicine, Zhengzhou University, Zhengzhou 450052, Henan, China
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Zhou J, Zhang S, Wang H, Sun H. LncFunNet: an integrated computational framework for identification of functional long noncoding RNAs in mouse skeletal muscle cells. Nucleic Acids Res 2017; 45:e108. [PMID: 28379566 PMCID: PMC5499579 DOI: 10.1093/nar/gkx232] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Accepted: 03/27/2017] [Indexed: 02/01/2023] Open
Abstract
Long noncoding RNAs (lncRNAs) are key regulators of diverse cellular processes. Recent advances in high-throughput sequencing have allowed for an unprecedented discovery of novel lncRNAs. To identify functional lncRNAs from thousands of candidates for further functional validation is still a challenging task. Here, we present a novel computational framework, lncFunNet (lncRNA Functional inference through integrated Network) that integrates ChIP-seq, CLIP-seq and RNA-seq data to predict, prioritize and annotate lncRNA functions. In mouse embryonic stem cells (mESCs), using lncFunNet we not only recovered most of the functional lncRNAs known to maintain mESC pluripotency but also predicted a plethora of novel functional lncRNAs. Similarly, in mouse myoblast C2C12 cells, applying lncFunNet led to prediction of reservoirs of functional lncRNAs in both proliferating myoblasts (MBs) and differentiating myotubes (MTs). Further analyses demonstrated that these lncRNAs are frequently bound by key transcription factors, interact with miRNAs and constitute key nodes in biological network motifs. Further experimentations validated their dynamic expression profiles and functionality during myoblast differentiation. Collectively, our studies demonstrate the use of lncFunNet to annotate and identify functional lncRNAs in a given biological system.
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Affiliation(s)
- Jiajian Zhou
- Department of Chemical Pathology, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, New Territories, Hong Kong SAR, China
- Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, New Territories, Hong Kong SAR, China
| | - Suyang Zhang
- Department of Chemical Pathology, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, New Territories, Hong Kong SAR, China
- Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, New Territories, Hong Kong SAR, China
| | - Huating Wang
- Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, New Territories, Hong Kong SAR, China
- Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, New Territories, Hong Kong SAR, China
| | - Hao Sun
- Department of Chemical Pathology, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, New Territories, Hong Kong SAR, China
- Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, New Territories, Hong Kong SAR, China
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Wang Q, Li Q, Zhou P, Deng D, Xue L, Shao N, Peng Y, Zhi F. Upregulation of the long non-coding RNA SNHG1 predicts poor prognosis, promotes cell proliferation and invasion, and reduces apoptosis in glioma. Biomed Pharmacother 2017; 91:906-911. [PMID: 28501778 DOI: 10.1016/j.biopha.2017.05.014] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Revised: 04/26/2017] [Accepted: 05/04/2017] [Indexed: 01/22/2023] Open
Abstract
Long non-coding RNAs (lncRNAs), which are non-coding RNAs with a length above 200 nucleotides, have emerged as novel and important gene expression modulators in carcinogenesis. Recent evidence indicates that the lncRNA small nucleolar RNA host gene 1 (SNHG1) functions as an oncogene in several types of human cancers. However, its function in the development of glioma remains unknown. The aim of this research was to investigate the clinical aspects and biological mechanisms of SNHG1 in glioma. SNHG1 expression was measured in glioma tissues and cell lines by quantitative real-time PCR (qRT-PCR). The association between SNHG1 expression in tissues and clinicopathological characteristics and prognosis in glioma patients was also explored. Gain-of-function and loss-of-function studies using SNHG1 cDNA and siRNA, respectively, were used to investigate the role of SNHG1 in cell proliferation, invasion and apoptosis in glioma. SNHG1 was highly expressed in glioma tissues, and its upregulation was closely related to old age. Kaplan-Meier analysis showed that high expression of SNHG1 was significantly associated with poor overall survival (OS). Functionally, ectopic expression of SNHG1 enhanced cell proliferation and cell invasion and reduced cell apoptosis in vitro, while SNHG1 knockdown reversed these effects. Taken together, our findings indicate that SNHG1 functions as an oncogene in glioma and may serve as a novel therapeutic target in future treatments.
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Affiliation(s)
- Qiang Wang
- Department of Neurosurgery, The First People's Hospital of Changzhou, Changzhou, Jiangsu, China
| | - Qing Li
- Department of Pathology, The First People's Hospital of Changzhou, Changzhou, Jiangsu, China
| | - Peng Zhou
- Department of Neurosurgery, The First People's Hospital of Changzhou, Changzhou, Jiangsu, China
| | - Danni Deng
- Modern Medical Research Center, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, China
| | - Lian Xue
- Modern Medical Research Center, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, China
| | - Naiyuan Shao
- Department of Neurosurgery, The First People's Hospital of Changzhou, Changzhou, Jiangsu, China.
| | - Ya Peng
- Department of Neurosurgery, The First People's Hospital of Changzhou, Changzhou, Jiangsu, China.
| | - Feng Zhi
- Department of Neurosurgery, The First People's Hospital of Changzhou, Changzhou, Jiangsu, China; Modern Medical Research Center, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, China.
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Long non-coding RNA SNHG1 regulates zinc finger E-box binding homeobox 1 expression by interacting with TAp63 and promotes cell metastasis and invasion in Lung squamous cell carcinoma. Biomed Pharmacother 2017; 90:650-658. [PMID: 28415044 DOI: 10.1016/j.biopha.2017.03.104] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2017] [Revised: 03/14/2017] [Accepted: 03/31/2017] [Indexed: 12/20/2022] Open
Abstract
The long non-coding RNAs (lncRNAs) have been recently shown to participate in the progression of a variety of cancers. However, the biological role of lncRNAs and the underlying mechanisms in Lung squamous cell carcinoma (SCC) or lung adenocarcinoma (AD) remain unclear. Herein, we investigated expression of 5 lncRNAS (SNHG1, NCBP2-AS2, LINC01206, SOX2-OT and LINC01419) in SCC and AD tissues. SNHG1 was one of over-expressed lncRNAs in SCC tissues. Knockdown of SNHG1 significantly inhibited the proliferation, metastasis, invasive ability and induced apoptosis of SCC cells. Moreover, SNHG1 affected the expression of zinc finger E-box binding homeobox 1(ZEB1), which has also been observed to be up-regulated in SCC and to promote cell metastasis and invasion. Rather than direct interaction, SNHG1 regulated ZEB1expression by suppressing the activity of p63 TA isoform (TAp63), which is a repressor of ZEB1 and physically associates with SNHG1. Furthermore, SNHG1 promoted ZEB1 expression and promoted cell proliferation, metastasis, invasive but inhibited apoptosis of SCC cells via the TAp63/ZEB1 pathway. Taken together, our findings suggested that SNHG1 might play an oncogenic role in SCC through ZEB1 signaling pathway by inhibiting TAp63 and might serve as a valuable prognostic biomarker and therapeutic target for SCC patients.
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