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Zhu Y, Tong Y, Wu J, Liu Y, Zhao M. Knockdown of LncRNA GHET1 suppresses prostate cancer cell proliferation by inhibiting HIF-1α/Notch-1 signaling pathway via KLF2. Biofactors 2019; 45:364-373. [PMID: 30609158 DOI: 10.1002/biof.1486] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 12/14/2018] [Accepted: 12/17/2018] [Indexed: 12/13/2022]
Abstract
Prostate cancer (PC) is one of the most common cancers in male groups worldwide. Long noncoding RNAs (LncRNAs) are reported to be dysregulated in a variety of cancers, including PC. This study aimed to explore the role of LncRNA GHET1 in the pathogenesis of PC. RT-qPCR was carried out to examine the relative expression level of GHET1 in PC patients. In vitro, GHET1 siRNA (si-GHET1) was used to investigate the biological role of GHET1 in PC cell lines. Cell proliferation was detected by CCK-8 and colony formation assay, while cell cycle and cell apoptosis were analyzed using flow cytometry. Moreover, western blot was carried out to measure the protein expression levels of KLF2 and HIF-1α/Notch-1 signal pathway. We found that GHET1 showed higher expression in PC tissues and had a negative correlation with KLF2 expression. Knockdown of GHET1 significantly suppressed the cell proliferation, induced cell cycle arrest at G0/G1 phase and promoted cell apoptosis. Additionally, si-GHET1 transfection induced KLF2 upregulation and HIF-1α/Notch-1 signal pathway suppression, which could be rescued by si-KLF2 transfection. These results suggest the key role of GHET1 in PC progression. Moreover, GHET1 might be explored to be a potential target for clinical treatment of PC. © 2019 BioFactors, 45(3):364-373, 2019.
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Affiliation(s)
- Yanfeng Zhu
- Department of Urology, Tangshan People's Hospital, Tangshan, China
| | - Yue Tong
- Chinese Academy of Medical Sciences, Graduate School of Peking Union Medical College, Beijing, China
| | - Jianhua Wu
- Department of Reproduction and Genetics, Maternity and Child Health Care Hospital, Tangshan, China
| | - Yuejuan Liu
- Traditional Chinese Medical College, North China University of Science and Technology, Tangshan, China
| | - Mingjia Zhao
- Department of Reproduction and Genetics, Maternity and Child Health Care Hospital, Tangshan, China
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102
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Liu H, Wang S, Zhou S, Meng Q, Ma X, Song X, Wang L, Jiang W. Drug Resistance-Related Competing Interactions of lncRNA and mRNA across 19 Cancer Types. MOLECULAR THERAPY. NUCLEIC ACIDS 2019; 16:442-451. [PMID: 31048183 PMCID: PMC6488743 DOI: 10.1016/j.omtn.2019.03.011] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Revised: 03/24/2019] [Accepted: 03/24/2019] [Indexed: 12/13/2022]
Abstract
Drug resistance is a common cause of treatment failure in cancer therapy, and molecular mechanisms need further exploration. Competing endogenous RNAs (ceRNAs) can influence drug response by participating in various biological processes, including regulation of cell cycle, signal transduction, and so on. In this study, we systematically explored resistance from the perspective of ceRNA modules. First, we constructed a general ceRNA network, involving 83 long non-coding RNAs (lncRNAs) and 379 mRNAs. Next, we identified the drug resistance-related modules for 138 drugs and 19 cancer types, totaling 758 drug-cancer conditions. Function analysis showed that resistance-related biological processes were enriched in these modules, such as regulation of cell proliferation, DNA damage repair, and so on. Pan-drug and pan-cancer analyses revealed some common and specific modules across multiple drugs or cancers. In addition, we also found that drug pairs with common modules have similar structure, indicating high risk for multidrug resistance (MDR). Finally, we speculated that ceRNA pair GAS5-RPL8 could regulate drug resistance because low expression of GAS5 would enhance microRNA (miRNA)-mediated inhibition of RPL8. In total, we investigated the drug resistance by using ceRNA modules and proposed that ceRNA modules may be new markers for drug resistance that indicated a possible novel mechanism.
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Affiliation(s)
- Haizhou Liu
- College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China
| | - Shuyuan Wang
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin 150081, China
| | - Shunheng Zhou
- College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China
| | - Qianqian Meng
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin 150081, China
| | - Xueyan Ma
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin 150081, China
| | - Xiaofeng Song
- College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China.
| | - Lihong Wang
- Department of Pathophysiology, School of Medicine, Southeast University, Nanjing 210009, China.
| | - Wei Jiang
- College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China.
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103
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Ji J, Dai X, Yeung SCJ, He X. The role of long non-coding RNA GAS5 in cancers. Cancer Manag Res 2019; 11:2729-2737. [PMID: 31114330 PMCID: PMC6497482 DOI: 10.2147/cmar.s189052] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Accepted: 02/15/2019] [Indexed: 12/31/2022] Open
Abstract
Long non-coding RNAs (lncRNAs) have shown potential as a biomarker in the diagnosis and prognosis in multiple cancers. LncRNAs are dysregulated in various cancers, playing either oncogenic or tumor suppressive roles. Emerging evidences have proved that the growth arrest-specific 5 (GAS5) lncRNA can function as a tumor suppressor in several cancers. LncRNA GAS5 is downregulated in many types of cancer, regulating cellular processes such as cell proliferation, apoptosis and invasion. The low level of GAS5 expression often elevates capacity of proliferation and predicts poorer prognosis in some cancers. This review aims to summarize the recent published literature on the biogenesis, regulation mechanism and function of GAS5 in different types of cancers and explore its potential for cancer diagnosis, prognosis and treatment.
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Affiliation(s)
- Jiali Ji
- Department of Medical Oncology, The 2nd Affiliated Hospital of Zhejiang University, Hangzhou, Zhejiang, People’s Republic of China
| | - Xiaolan Dai
- Department of Pharmacy, School of Medicine, Shantou University, Shantou, Guangdong, People’s Republic of China
| | - Sai-Ching Jim Yeung
- Division of Internal Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Xuexin He
- Department of Medical Oncology, The 2nd Affiliated Hospital of Zhejiang University, Hangzhou, Zhejiang, People’s Republic of China
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104
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Abstract
While only a small part of the human genome encodes for proteins, biological functions for the so-called junk genome are increasingly being recognized through high-throughput technologies and mechanistic experimental studies. Indeed, novel mechanisms of gene regulation are being discovered that require coordinated interaction between DNA, RNA, and proteins. Therefore, interdisciplinary efforts are still needed to decipher these complex transcriptional networks. In this review, we discuss how non-coding RNAs (ncRNAs) are epigenetically regulated in cancer and metastases and consequently how ncRNAs participate in the sculpting of the epigenetic profile of a cancer cell, thus modulating the expression of other RNA molecules. In the latter case, ncRNAs not only affect the DNA methylation status of certain genomic loci but also interact with histone-modifying complexes, changing the structure of the chromatin itself. We present several examples of epigenetic changes causing aberrant expression of ncRNAs in the context of tumor progression. Interestingly, there are also important epigenetic changes and transcriptional regulatory effects derived from their aberrant expression. As ncRNAs can also be used as biomarkers for diagnosis and prognosis or explored as potential targets, we present insights into the use of ncRNAs for targeted cancer therapy.
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105
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Wang J, Zhang X, Chen W, Hu X, Li J, Liu C. Regulatory roles of long noncoding RNAs implicated in cancer hallmarks. Int J Cancer 2019; 146:906-916. [PMID: 30873588 DOI: 10.1002/ijc.32277] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 02/18/2019] [Accepted: 03/11/2019] [Indexed: 12/16/2022]
Abstract
Cancer cells acquire numerous biological properties (designated "cancer hallmarks"), such as cell survival and energy metabolism, that facilitate tumor growth and metastatic dissemination during development. To date, eight hallmarks of cancer have been identified that provide a logical framework for understanding the remarkable diversity of neoplastic diseases, as proposed by Douglas Hanahan and Robert A. Weinberg. Long noncoding RNAs (lncRNAs), a category of transcripts widely demonstrated to exert significant regulatory effects on biological processes, have attracted considerable research attention due to their association with the occurrence and development of cancer. The mechanisms by which lncRNAs exert their functions require elucidation to optimize their potential utility as alternative biomarkers and therapeutic targets during tumor occurrence and progression. In this review, we have discussed recent research progress on lncRNAs involved in various cancer hallmarks and their related mechanisms of action, with a view to providing an updated picture of their immense therapeutic potential in the fight against cancer.
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Affiliation(s)
- Jun Wang
- CAS Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming, Yunnan, China.,Department of Oncology, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Xuan Zhang
- CAS Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming, Yunnan, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Wen Chen
- CAS Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming, Yunnan, China.,State Key Laboratory of Developmental Biology of Freshwater Fish, School of Life Sciences, Hunan Normal University, Changsha, Hunan, China
| | - Xiang Hu
- State Key Laboratory of Developmental Biology of Freshwater Fish, School of Life Sciences, Hunan Normal University, Changsha, Hunan, China
| | - Jing Li
- CAS Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming, Yunnan, China
| | - Changning Liu
- CAS Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming, Yunnan, China.,State Key Laboratory of Developmental Biology of Freshwater Fish, School of Life Sciences, Hunan Normal University, Changsha, Hunan, China
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106
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Dong L, Li G, Li Y, Zhu Z. Upregulation of Long Noncoding RNA GAS5 Inhibits Lung Cancer Cell Proliferation and Metastasis via miR-205/PTEN Axis. Med Sci Monit 2019; 25:2311-2319. [PMID: 30926767 PMCID: PMC6452771 DOI: 10.12659/msm.912581] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Background Long noncoding RNA (lncRNA) is a key part of noncoding RNA class and increasing evidences have manifested that it plays a significant role in the physiology and pathology. The growth arrest-specific transcript 5 (GAS5) is a vital tumor suppressor in some types of cancers. However, the function of GAS5 in lung cancer remains largely no clear. The purpose of the current study was to identify the biological role of GAS5 in non-small cell lung cancer (NSCLC). Material/Methods To study the role of GAS5 in the NSCLC, the RT-PCR, Western Blot, Luciferase assay, and RNA immunoprecipitation assay was employed to determine the relationship of GAS5, miR-205, and PTEN. CCK8 assay, Cell migration and invasion assay was used for the role of GAS5 in lung cancer cell proliferation and metastasis. Results The results indicated that GAS5 was drastically downregulated in lung cancer cell lines. Further functional analysis showed that down-expression of GAS5 remarkably induced NSCLC growth, migration, and invasion. The luciferase reporter assays determined that miR-205 was a direct target of GAS5 in lung cancer. Moreover, the Phosphatase and tensin homologue (PTEN) was known as a direct target of miR-205 and miR-205/PTEN rescued the effects of GAS5 in NSCLC cells. Conclusions To sum up, our results illustrate that upregulation of GAS5 in NSCLC suppresses its growth, migration, and invasion via the miR-205/PTEN axis.
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Affiliation(s)
- Lizhen Dong
- Department of Clinical Laboratory, Tianjin Medical University General Hospital, Tianjin, China (mainland)
| | - Guangming Li
- Department of Pathogen Biology, Tianjin Medical University, Tianjin, China (mainland)
| | - Yongmei Li
- Department of Pathogen Biology, Tianjin Medical University, Tianjin, China (mainland)
| | - Ze Zhu
- Department of Pathogen Biology, Tianjin Medical University, Tianjin, China (mainland)
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107
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Inhibition of the lncRNA SAF drives activation of apoptotic effector caspases in HIV-1-infected human macrophages. Proc Natl Acad Sci U S A 2019; 116:7431-7438. [PMID: 30918127 PMCID: PMC6462110 DOI: 10.1073/pnas.1818662116] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Tissue resident macrophages are long-lived, self-replenishing myeloid cells. They harbor and support HIV-1 replication, but unlike CD4+ T cells, do not succumb to virus-induced cell death. Here, we have screened a panel of 90 long noncoding RNAs (lncRNA) and identified a lncRNA, SAF, that plays a critical role in the resistance of HIV-1–infected macrophages to activation of apoptotic caspases. We have further shown that down-regulation of SAF expression with siRNA treatment can activate effector caspase-3/7 specifically in virus-infected macrophages without affecting the uninfected and bystander cells. Overall, our study describes the approach of modulating the lncRNA SAF for targeted elimination of HIV-1–infected macrophages that can lead to reduction and potential clearance of these viral reservoir cells. Long noncoding RNAs (lncRNAs) impart significant regulatory functions in a diverse array of biological pathways and manipulation of these RNAs provides an important avenue to modulate such pathways, particularly in disease. Our knowledge about lncRNAs’ role in determination of cellular fate during HIV-1 infection remains sparse. Here, we have identified the impact of the lncRNA SAF in regulating apoptotic effector caspases in macrophages, a long-lived cellular reservoir of HIV-1, that are largely immune to virus-induced cell death. Expression of SAF is significantly up-regulated in HIV-1–infected human monocyte-derived macrophages (MDM) compared with bystander and virus-nonexposed cells. A similar enhancement in SAF RNA expression is also detected in the HIV-1–infected airway macrophages obtained by bronchoalveolar lavage of HIV-1–infected individuals. Down-regulation of SAF with siRNA treatment increases caspase-3/7 activity levels in virus-infected MDMs. This induction of apoptotic caspases occurs exclusively in HIV-1–infected macrophages and not in bystander cells, leading to a significant reduction in HIV-1 replication and overall viral burden in the macrophage culture. This study identifies targeting of the lncRNA SAF as a potential means to specifically induce cell death in HIV-1–infected macrophages.
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108
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Long non-coding RNA SNHG6 is upregulated in prostate cancer and predicts poor prognosis. Mol Biol Rep 2019; 46:2771-2778. [PMID: 30911973 DOI: 10.1007/s11033-019-04723-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2018] [Accepted: 02/27/2019] [Indexed: 10/27/2022]
Abstract
Certain long non-coding RNAs (lncRNAs) have been reported to be differentially expressed in various human cancer types, including prostate cancer (PCa). PCa is the most commonly diagnosed cancer type in men and lacks sensitive and accurate biomarkers. Emerging studies have indicated that certain lncRNAs are dysregulated and have crucial roles in PCa progression. The present study reported that the novel lncRNA small nucleolar RNA host gene 6 (SNHG6) is overexpressed in PCa compared with that in normal prostate tissues. In The Cancer Genome Atlas and Taylor datasets, high expression of SNHG6 in PCa tissues was identified to be significantly associated with shorter disease-free survival. In order to reveal the potential mechanisms of the role of SNHG6 in PCa, SNHG6-associated protein-protein interaction networks were constructed. Bioinformatics analysis revealed that these SNHG6-interacting genes were associated with translation, nuclear-transcribed mRNA catabolic process, ribosomal RNA processing and mRNA splicing. Although further functional validation is warranted, the present study suggests that SNHG6 is a potential novel therapeutic target and prognostic biomarker for PCa.
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109
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Shi Y, Parag S, Patel R, Lui A, Murr M, Cai J, Patel NA. Stabilization of lncRNA GAS5 by a Small Molecule and Its Implications in Diabetic Adipocytes. Cell Chem Biol 2019; 26:319-330.e6. [PMID: 30661991 PMCID: PMC10498384 DOI: 10.1016/j.chembiol.2018.11.012] [Citation(s) in RCA: 73] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 10/08/2018] [Accepted: 11/16/2018] [Indexed: 12/22/2022]
Abstract
Long noncoding RNA (lncRNA) are regulatory RNAs >200 nt. We previously showed that lncRNA GAS5 decreases significantly in serum of type 2 diabetes mellitus (T2DM) patients. Hence, we sought to decipher the molecular mechanisms underlying the role of GAS5 in T2DM in adipose tissue. Using CHIP-RIP, we demonstrate that GAS5 binds to promoter of insulin receptor to regulate its expression, and its depletion inhibits glucose uptake and insulin signaling. Toward stabilizing GAS5 levels in T2DM, we incorporated a strategy to limit the degradation of GAS5 by blocking the interaction of GAS5 and UPF1 with a small molecule identified using OBTC screening strategy. NP-C86 binds to GAS5 with high affinity, and increases GAS5 levels and glucose uptake in diabetic patient adipocytes. As a broader impact, NP-C86 may be used as a molecular probe to investigate the intricacies of GAS5 in relevant biological systems as it offers specificity, efficient cellular uptake and is non-cytotoxic.
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Affiliation(s)
- Yan Shi
- Department of Chemistry, University of South Florida, 4202 E. Fowler Avenue, Tampa, FL 33620, USA
| | - Sajan Parag
- Department of Molecular Medicine, University of South Florida, 12901 Bruce B. Downs Boulevard, Tampa, FL 33612, USA
| | - Rekha Patel
- Department of Molecular Medicine, University of South Florida, 12901 Bruce B. Downs Boulevard, Tampa, FL 33612, USA
| | - Ashley Lui
- Department of Molecular Medicine, University of South Florida, 12901 Bruce B. Downs Boulevard, Tampa, FL 33612, USA
| | - Michel Murr
- Department of Surgery, University of South Florida, 12901 Bruce B. Downs Boulevard, Tampa, FL 33612, USA
| | - Jianfeng Cai
- Department of Chemistry, University of South Florida, 4202 E. Fowler Avenue, Tampa, FL 33620, USA.
| | - Niketa A Patel
- James A. Haley Veterans Hospital, 13000 Bruce B. Downs Boulevard, Tampa, FL 33612, USA; Department of Molecular Medicine, University of South Florida, 12901 Bruce B. Downs Boulevard, Tampa, FL 33612, USA.
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110
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Diao L, Bai L, Jiang X, Li J, Zhang Q. Long‐chain noncoding RNA GAS5 mediates oxidative stress in cardiac microvascular endothelial cells injury. J Cell Physiol 2019; 234:17649-17662. [PMID: 30825202 DOI: 10.1002/jcp.28388] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Revised: 01/09/2019] [Accepted: 01/16/2019] [Indexed: 12/15/2022]
Affiliation(s)
- Liwei Diao
- Department of Cardiovascular Surgery The 2nd Affiliated Hospital of Harbin Medical University Harbin People's Republic of China
| | - Long Bai
- Department of Cardiovascular Surgery The 2nd Affiliated Hospital of Harbin Medical University Harbin People's Republic of China
| | - Xingpei Jiang
- Department of Cardiovascular Surgery The 2nd Affiliated Hospital of Harbin Medical University Harbin People's Republic of China
| | - Jianjun Li
- Department of Cardiovascular Surgery The 2nd Affiliated Hospital of Harbin Medical University Harbin People's Republic of China
| | - Qinghua Zhang
- Department of Cardiovascular Surgery The 2nd Affiliated Hospital of Harbin Medical University Harbin People's Republic of China
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111
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Growth arrest specific transcript 5 in tumorigenesis process: An update on the expression pattern and genomic variants. Biomed Pharmacother 2019; 112:108723. [PMID: 30970522 DOI: 10.1016/j.biopha.2019.108723] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2018] [Revised: 02/21/2019] [Accepted: 02/21/2019] [Indexed: 02/06/2023] Open
Abstract
Growth arrest-specific 5 (GAS5) is a long non-coding RNA (lncRNA) with diverse functions in regulation of gene expression. Most studies have reported a role for this lncRNA in induction of cell apoptosis and suppression of tumorigenesis process. Although few studies demonstrated up-regulation of this lncRNA in tumor tissues compared to non-tumor tissues of the same origin, the results of in vitro functional studies mostly support the tumor suppressor role for GAS5. A number of recent studies have also shown associations between genomic variants of this gene and risk of cancer in some populations. The role of this lncRNA in modulation of response to anti-cancer regimens has been verified through both in vitro and clinical studies. Taken together, this lncRNA is a putative biomarker and therapeutic target in human malignancies.
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112
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Miao X, Liang A. Retracted: Knockdown of long noncoding RNA GAS5 attenuates H 2 O 2 -induced damage in retinal ganglion cells through upregulating miR-124: Potential role in traumatic brain injury. J Cell Biochem 2019; 120:2313-2322. [PMID: 30450834 DOI: 10.1002/jcb.27560] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Accepted: 08/02/2018] [Indexed: 02/02/2023]
Abstract
BACKGROUND Optic nerve injury is one of the most common and serious complications in traumatic brain injury (TBI). Alleviating degree of optic nerve injury is important to cure of TBI. This study explored the role of long noncoding RNA (lncRNA) GAS5 in mice retinal ganglion cells (RGCs) suffered to H2 O 2 injury. METHODS Primary RGC (PRGCs) were treated with H2 O 2 to simulate an in vitro oxidation stress model. LncRNA GAS5 and miR-124 expressions were knocked down by cell transfection with short-hairpin RNA against GAS5 and miR-124 inhibitor, and the transfection efficiency was determined by qRT-PCR. Cell viability, apoptotic cell rate, and production of reactive oxygen species (ROS) was analyzed by CCK-8 assay, PI/FITC-Annexin V method, and DCFH-DA fluorometric assay. Cell apoptosis-associated proteins as well as activations of JAK/STAT3 signaling and JNK signaling were analyzed by Western blot. RESULTS H2 O 2 treatment-induced cell injury was inhibited by lncRNA GAS5 silence. Specifically, knockdown of GAS5 improved viability of primary PRGCs, inhibited apoptosis, decreased ROS expression, increased antiapoptosis proteins' expressions, and decreased proapoptosis proteins' expressions. It was also found that miR-124 inhibitor treatment impaired the cell protective effect of GAS5 silence, indicating low level of GAS5 protected PRGCs via upregulating miR-124. GAS5 silence might exert cytoprotection effect via activating JAK/STAT3 signaling pathway and inhibiting activation of JNK signaling pathway. CONCLUSION Knocking down lncRNA GAS5 alleviated H2 O 2 -induced injury in PRGCs via upregulation of miR-124, which might dependent on activation of JAK/STAT3 signaling pathway and inhibition of JNK signaling pathway.
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Affiliation(s)
- Xinglu Miao
- Department of Neurosurgery, Jining No. 1 People's Hospital, Jining, Shandong, China
| | - Anran Liang
- Department of Ophthalmology, Jining No. 1 People's Hospital, Jining, Shandong, China
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113
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Das R, Feng FY, Selth LA. Long non-coding RNAs in prostate cancer: Biological and clinical implications. Mol Cell Endocrinol 2019; 480:142-152. [PMID: 30391670 DOI: 10.1016/j.mce.2018.10.023] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Revised: 10/12/2018] [Accepted: 10/31/2018] [Indexed: 12/31/2022]
Abstract
Prostate cancer (PCa) is a major health issue in the Western world. Current clinical imperatives for this disease include better stratification of indolent versus aggressive disease to enable improved patient management, as well as the identification of more effective therapies for the prevention and treatment of metastatic and therapy-resistant PCa. The advent of next-generation transcriptomics led to the identification of an important class of molecules, long non-coding RNAs (lncRNAs). LncRNAs have critical functions in normal physiology, but their dysregulation has also been implicated in the development and progression of a variety of cancers, including PCa. Importantly, a subset of lncRNAs are highly prostate-specific, suggesting potential for utility as both biomarkers and therapeutic targets. In this review, we summarise the biology of lncRNAs and their mechanisms of action in the development and progression of prostate cancer. Additionally, we cast a critical eye over the potential for this class of molecules to impact on clinical practice.
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Affiliation(s)
- Rajdeep Das
- Department of Radiation Oncology, University of California San Francisco, USA; Helen Diller Family Comprehensive Cancer Center, University of California San Francisco, USA.
| | - Felix Y Feng
- Department of Radiation Oncology, University of California San Francisco, USA; Helen Diller Family Comprehensive Cancer Center, University of California San Francisco, USA; Department of Urology, University of California San Francisco, USA
| | - Luke A Selth
- Dame Roma Mitchell Cancer Research Laboratories, Adelaide Medical School, University of Adelaide, Adelaide, SA, Australia; Freemasons Foundation Centre for Men's Health, Adelaide Medical School, University of Adelaide, Adelaide, SA, Australia.
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114
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James AR, Schroeder MP, Neumann M, Bastian L, Eckert C, Gökbuget N, Tanchez JO, Schlee C, Isaakidis K, Schwartz S, Burmeister T, von Stackelberg A, Rieger MA, Göllner S, Horstman M, Schrappe M, Kirschner-Schwabe R, Brüggemann M, Müller-Tidow C, Serve H, Akalin A, Baldus CD. Long non-coding RNAs defining major subtypes of B cell precursor acute lymphoblastic leukemia. J Hematol Oncol 2019; 12:8. [PMID: 30642353 PMCID: PMC6332539 DOI: 10.1186/s13045-018-0692-3] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Accepted: 12/25/2018] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND Long non-coding RNAs (lncRNAs) have emerged as a novel class of RNA due to its diverse mechanism in cancer development and progression. However, the role and expression pattern of lncRNAs in molecular subtypes of B cell acute lymphoblastic leukemia (BCP-ALL) have not yet been investigated. Here, we assess to what extent lncRNA expression and DNA methylation is driving the progression of relapsed BCP-ALL subtypes and we determine if the expression and DNA methylation profile of lncRNAs correlates with established BCP-ALL subtypes. METHODS We performed RNA sequencing and DNA methylation (Illumina Infinium microarray) of 40 diagnosis and 42 relapse samples from 45 BCP-ALL patients in a German cohort and quantified lncRNA expression. Unsupervised clustering was applied to ascertain and confirm that the lncRNA-based classification of the BCP-ALL molecular subtypes is present in both our cohort and an independent validation cohort of 47 patients. A differential expression and differential methylation analysis was applied to determine the subtype-specific, relapse-specific, and differentially methylated lncRNAs. Potential functions of subtype-specific lncRNAs were determined by using co-expression-based analysis on nearby (cis) and distally (trans) located protein-coding genes. RESULTS Using an integrative Bioinformatics analysis, we developed a comprehensive catalog of 1235 aberrantly dysregulated BCP-ALL subtype-specific and 942 relapse-specific lncRNAs and the methylation profile of three subtypes of BCP-ALL. The 1235 subtype-specific lncRNA signature represented a similar classification of the molecular subtypes of BCP-ALL in the independent validation cohort. We identified a strong correlation between the DUX4-specific lncRNAs and genes involved in the activation of TGF-β and Hippo signaling pathways. Similarly, Ph-like-specific lncRNAs were correlated with genes involved in the activation of PI3K-AKT, mTOR, and JAK-STAT signaling pathways. Interestingly, the relapse-specific lncRNAs correlated with the activation of metabolic and signaling pathways. Finally, we found 23 promoter methylated lncRNAs epigenetically facilitating their expression levels. CONCLUSION Here, we describe a set of subtype-specific and relapse-specific lncRNAs from three major BCP-ALL subtypes and define their potential functions and epigenetic regulation. The subtype-specific lncRNAs are reproducible and can effectively stratify BCP-ALL subtypes. Our data uncover the diverse mechanism of action of lncRNAs in BCP-ALL subtypes defining which lncRNAs are involved in the pathogenesis of disease and are relevant for the stratification of BCP-ALL subtypes.
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Affiliation(s)
- Alva Rani James
- Department of Hematology and Oncology, Charité, University Hospital Berlin, Campus Benjamin Franklin, 12203, Berlin, Germany
- German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany
- German Cancer Consortium (DKTK), 69120, Heidelberg, Germany
| | - Michael P Schroeder
- Department of Hematology and Oncology, Charité, University Hospital Berlin, Campus Benjamin Franklin, 12203, Berlin, Germany
| | - Martin Neumann
- Department of Hematology and Oncology, Charité, University Hospital Berlin, Campus Benjamin Franklin, 12203, Berlin, Germany
- German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany
- German Cancer Consortium (DKTK), 69120, Heidelberg, Germany
| | - Lorenz Bastian
- Department of Hematology and Oncology, Charité, University Hospital Berlin, Campus Benjamin Franklin, 12203, Berlin, Germany
- German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany
- German Cancer Consortium (DKTK), 69120, Heidelberg, Germany
| | - Cornelia Eckert
- German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany
- German Cancer Consortium (DKTK), 69120, Heidelberg, Germany
- Department of Pediatric Hematology/Oncology, Charité, University Hospital Berlin, Campus Rudolf Virchow, 13353, Berlin, Germany
| | - Nicola Gökbuget
- German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany
- German Cancer Consortium (DKTK), 69120, Heidelberg, Germany
- Department of Medicine II, Department of Hematology/Oncology, Goethe University Hospital, 60590, Frankfurt/M, Germany
| | - Jutta Ortiz Tanchez
- Department of Hematology and Oncology, Charité, University Hospital Berlin, Campus Benjamin Franklin, 12203, Berlin, Germany
| | - Cornelia Schlee
- Department of Hematology and Oncology, Charité, University Hospital Berlin, Campus Benjamin Franklin, 12203, Berlin, Germany
| | - Konstandina Isaakidis
- Department of Hematology and Oncology, Charité, University Hospital Berlin, Campus Benjamin Franklin, 12203, Berlin, Germany
| | - Stefan Schwartz
- Department of Hematology and Oncology, Charité, University Hospital Berlin, Campus Benjamin Franklin, 12203, Berlin, Germany
| | - Thomas Burmeister
- Department of Hematology, Oncology and Tumor Immunology, Charité University Hospital Berlin, Campus Virchow-Klinikum, 13353, Berlin, Germany
| | - Arend von Stackelberg
- German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany
- German Cancer Consortium (DKTK), 69120, Heidelberg, Germany
- Department of Pediatric Hematology/Oncology, Charité, University Hospital Berlin, Campus Rudolf Virchow, 13353, Berlin, Germany
| | - Michael A Rieger
- German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany
- German Cancer Consortium (DKTK), 69120, Heidelberg, Germany
- Department of Medicine II, Department of Hematology/Oncology, Goethe University Hospital, 60590, Frankfurt/M, Germany
| | - Stefanie Göllner
- Department of Hematology, Oncology & Rheumatology, University Clinic Heidelberg, 69120, Heidelberg, Germany
| | - Martin Horstman
- Department of Pediatric Hematology and Oncology, Research Institute Children's Cancer Center, University Medical Center Hamburg, 20251, Hamburg, Germany
| | - Martin Schrappe
- Department of Pediatrics, University Hospital Schleswig-Holstein, Campus Kiel, 24105, Kiel, Germany
| | - Renate Kirschner-Schwabe
- German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany
- German Cancer Consortium (DKTK), 69120, Heidelberg, Germany
- Department of Pediatric Hematology/Oncology, Charité, University Hospital Berlin, Campus Rudolf Virchow, 13353, Berlin, Germany
| | - Monika Brüggemann
- Department of Hematology and Oncology, University Hospital Schleswig-Holstein, Campus Kiel, 24105, Kiel, Germany
| | - Carsten Müller-Tidow
- Department of Hematology, Oncology & Rheumatology, University Clinic Heidelberg, 69120, Heidelberg, Germany
| | - Hubert Serve
- German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany
- German Cancer Consortium (DKTK), 69120, Heidelberg, Germany
- Department of Medicine II, Department of Hematology/Oncology, Goethe University Hospital, 60590, Frankfurt/M, Germany
| | - Altuna Akalin
- Bioinformatics Platform, Berlin Institute for Medical Systems Biology (BIMSB), Max Delbrück Center (MDC), 13125, Berlin, Germany
| | - Claudia D Baldus
- Department of Hematology and Oncology, Charité, University Hospital Berlin, Campus Benjamin Franklin, 12203, Berlin, Germany.
- German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany.
- German Cancer Consortium (DKTK), 69120, Heidelberg, Germany.
- Department of Hematology and Oncology, University Hospital Schleswig-Holstein, Campus Kiel, 24105, Kiel, Germany.
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Salemi M, Cannarella R, Condorelli RA, Cimino L, Ridolfo F, Giurato G, Romano C, La Vignera S, Calogero AE. Evidence for long noncoding RNA GAS5 up-regulationin patients with Klinefelter syndrome. BMC MEDICAL GENETICS 2019; 20:4. [PMID: 30612561 PMCID: PMC6322229 DOI: 10.1186/s12881-018-0744-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Accepted: 12/26/2018] [Indexed: 01/06/2023]
Abstract
Background Klinefelter syndrome (KS) is characterized by the presence of at least one supernumerary X chromosome. KS typical symptoms include tall stature, gynecomastia, hypogonadism and azoospermia. KS patients show a higher risk of developing metabolic and cardiovascular diseases, inflammatory and autoimmune disorders, osteoporosis and cancer. Long non-coding RNA (lncRNA) growth arrest-specific 5 (GAS5) has been shown to be involved in several biologic processes, including inflammatory and autoimmune diseases, vascular endothelial cells apoptosis and atherosclerosis, as well as cellular growth and proliferation, cellular development and cell-to-cell signaling and interaction. The lncRNA GAS5 expression profile in KS patients has never been evaluated so far. Methods To accomplish this, GAS5 mRNA levels were evaluated by Next Generation Sequencing (NGS) technology and qRT-PCR assay in 10 patients with KS and 10 age-matched controls. Results NGS results showed a significantly lncRNAGAS5up-regulation by 5.171-fold in patients with KS. Theresults of qRT-PCR confirmed the NGS data. Conclusions These findings showed the occurrence of lncRNA GAS5 over-expression in KS patients. Whether this lncRNA is involved in the pathogenesis of inflammation and autoimmune diseases, atherogenesis or germ cell depletion in KS patients is not known. Further studies are needed.
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Affiliation(s)
| | - Rossella Cannarella
- Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy
| | - Rosita A Condorelli
- Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy
| | - Laura Cimino
- Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy
| | - Federico Ridolfo
- UOS of Clinical Pathology, ASUR Marche - AV2, Hospital of Senigallia, Senigallia, Italy
| | - Giorgio Giurato
- Genomix4Life Srl, Department of Medicine, Surgery and Dentistry "Scuola Medica Salernitana", University of Salerno, Baronissi (SA), Italy
| | | | - Sandro La Vignera
- Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy
| | - Aldo E Calogero
- Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy
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Fanelli GN, Gasparini P, Coati I, Cui R, Pakula H, Chowdhury B, Valeri N, Loupakis F, Kupcinskas J, Cappellesso R, Fassan M. LONG-NONCODING RNAs in gastroesophageal cancers. Noncoding RNA Res 2018; 3:195-212. [PMID: 30533569 PMCID: PMC6257886 DOI: 10.1016/j.ncrna.2018.10.001] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 10/26/2018] [Accepted: 10/26/2018] [Indexed: 02/07/2023] Open
Abstract
Despite continuing improvements in multimodal therapies, gastro-esophageal malignances remain widely prevalent in the population and is characterized by poor overall and disease-free survival rates. Due to the lack of understanding about the pathogenesis and absence of reliable markers, gastro-esophageal cancers are associated with delayed diagnosis. The increasing understanding about cancer's molecular landscape in the recent years, offers the possibility of identifying 'targetable' molecular events and in particular facilitates novel treatment strategies and development of biomarkers for early stage diagnosis. At least 98% of our genome is actively transcribed into non-coding RNAs encompassing long non-coding RNAs (lncRNAs) constituted of transcripts longer than 200 nucleotides with no protein-coding capacity. Many studies have demonstrated that lncRNAs are functional genomic elements playing pivotal roles in main oncogenic processes. LncRNA can act at multiple levels developing a complex molecular network that can modulate directly or indirectly the expression of genes involved in tumorigenesis. In this review, we focus on lncRNAs as emerging players in gastro-esophageal carcinogenesis and critically assess their potential as reliable noninvasive biomarkers and in next generation targeted therapies.
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Affiliation(s)
- Giuseppe Nicolò Fanelli
- Department of Medicine (DIMED), Surgical Pathology & Cytopathology Unit, University of Padua, Padua, PD, Italy
- Department of Oncologic Pathology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Pierluigi Gasparini
- Department of Cancer Biology and Genetics, College of Medicine, The Ohio State University Comprehensive Cancer Center, Columbus, OH, USA
| | - Irene Coati
- Department of Medicine (DIMED), Surgical Pathology & Cytopathology Unit, University of Padua, Padua, PD, Italy
| | - Ri Cui
- Department of Cancer Biology and Genetics, College of Medicine, The Ohio State University Comprehensive Cancer Center, Columbus, OH, USA
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Hubert Pakula
- Department of Oncologic Pathology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Basudev Chowdhury
- Department of Oncologic Pathology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Nicola Valeri
- Division of Molecular Pathology, The Institute of Cancer Research, London, UK
- Department of Medicine, The Royal Marsden NHS Trust, London, UK
| | - Fotios Loupakis
- Oncology Unit, Istituto Oncologico Veneto, IOV-IRCCS, Padua, PD, Italy
| | - Juozas Kupcinskas
- Department of Gastroenterology and Institute for Digestive Research, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Rocco Cappellesso
- Department of Medicine (DIMED), Surgical Pathology & Cytopathology Unit, University of Padua, Padua, PD, Italy
| | - Matteo Fassan
- Department of Medicine (DIMED), Surgical Pathology & Cytopathology Unit, University of Padua, Padua, PD, Italy
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Lu T, Wang Y, Chen D, Liu J, Jiao W. Potential clinical application of lncRNAs in non-small cell lung cancer. Onco Targets Ther 2018; 11:8045-8052. [PMID: 30519046 PMCID: PMC6239124 DOI: 10.2147/ott.s178431] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
Lung cancer has been identified as one of the most prevalent and deadly tumors worldwide. In recent years, lncRNAs have been demonstrated to play a significant role in the development of lung cancer. Specifically, lncRNAs act as a regulator of cancer-critical genes, and they regulate the biological behavior of tumors at the transcriptional and posttranscriptional levels. Recent studies have shown that lncRNAs possess great potential in the treatment of non-small cell lung cancer patients because of their roles in diverse cellular processes, such as proliferation, metastasis, stem cell maintenance, and epithelial to mesenchymal transition, and they serve as signaling biomarkers. Compared to other invasive diagnostic methods, detection of lncRNAs may become a very useful noninvasive methodology. Moreover, lncRNAs can serve as potential therapeutic targets in non-small cell lung cancer due to their roles in regulating many signaling pathways associated with lung carcinoma. In this review, we discuss the roles and expression profile of lncRNAs. We also discuss the promising application of lncRNAs as predictors of clinical diagnosis, prognosis, and as potential therapeutic targets, aiming to demonstrate their practical value for clinical treatment.
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Affiliation(s)
- Tong Lu
- Department of Thoracic Surgery, Affiliated Hospital of Qingdao University, Qingdao, China,
| | - Yuanyong Wang
- Department of Thoracic Surgery, Affiliated Hospital of Qingdao University, Qingdao, China,
| | - Di Chen
- Department of Gastroenterology, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Jia Liu
- School of Pharmacy, Qingdao University, Qingdao, China,
| | - Wenjie Jiao
- Department of Thoracic Surgery, Affiliated Hospital of Qingdao University, Qingdao, China,
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Zhou X, Chen Q, Wang H, Zhang C, Fu B, Wang G. Specific expression of lncRNA RP13-650J16.1 and TCONS_00023979 in prostate cancer. Biosci Rep 2018; 38:BSR20171571. [PMID: 30279207 PMCID: PMC6209587 DOI: 10.1042/bsr20171571] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Revised: 08/22/2018] [Accepted: 08/24/2018] [Indexed: 11/17/2022] Open
Abstract
The aim of the present study was to explore the expression profile and the potential regulatory mechanism of two long non-coding RNAs (lncRNAs) (RP13-650J16.1 and TCONS_00023979) in prostate cancer (PCa). Expression profile of lncRNAs in PCa and paracancerous tissues were investgated by the high-throughput gene chip technology. Specific siRNA of RP13-650J16.1 or TCONS_00023979 was transfected into DU145 cells. Then, the relative expression of RP13-650J16.1, receptor-associated coactivator 3 (RAC3), promyelocytic leukemia (PML), and TCONS_00023979 was detected by quantitative real-time PCR and Western blotting. MTT assay was used to detect the proliferation of DU145 cells. The migration ability of DU145 cells was measured by Transwell chambers. Single cell proliferation and clonogenic ability were detected by plate clone formation assay. RP13-650J16.1 and RAC3 expression was up-regulated, and TCONS_00023979 and PML expression was down-regulated in PCa tissues. Silencing RP13-650J16.1 could decrease RAC3 expression, and knockout of TCONS_00023979 also reduced PML expression. Moreover, the ability of proliferation, migration, and colony formation of DU145 cells was decreased after transfected with si-RP13-650J16.1, while these abilities were increased after transfected with si-TCONS_00023979. Collectively, our findings demonstrated that RP13-650J16.1 might be an oncogene and TCONS_00023979 might be an antioncogene in PCa.
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Affiliation(s)
- Xiaochen Zhou
- Department of Urology, The First Affiliated Hospital of Nanchang University, Nanchang 330006, Jiangxi, China
| | - Qiong Chen
- Department of Urology, Changzheng Hospital, Second Military Medical University, Shanghai 200003, China
| | - Haolin Wang
- Department of Urology, Yichun People's Hospital, Yichun 336000, Jiangxi, China
| | - Cheng Zhang
- Department of Urology, The First Affiliated Hospital of Nanchang University, Nanchang 330006, Jiangxi, China
| | - Bin Fu
- Department of Urology, The First Affiliated Hospital of Nanchang University, Nanchang 330006, Jiangxi, China
| | - Gongxian Wang
- Department of Urology, The First Affiliated Hospital of Nanchang University, Nanchang 330006, Jiangxi, China
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Avgeris M, Tsilimantou A, Levis PK, Tokas T, Sideris DC, Stravodimos K, Ardavanis A, Scorilas A. Loss of GAS5 tumour suppressor lncRNA: an independent molecular cancer biomarker for short-term relapse and progression in bladder cancer patients. Br J Cancer 2018; 119:1477-1486. [PMID: 30374124 PMCID: PMC6288135 DOI: 10.1038/s41416-018-0320-6] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 10/10/2018] [Accepted: 10/10/2018] [Indexed: 01/03/2023] Open
Abstract
Background Bladder cancer (BlCa) heterogeneity and the lack of personalised prognosis lead to patients’ highly variable treatment outcomes. Here, we have analysed the utility of the GAS5 tumour-suppressor lncRNA in improving BlCa prognosis. Methods GAS5 was quantified in a screening cohort of 176 patients. Hedegaard et al. (2016) (n = 476) and TCGA provisional (n = 413) were used as validation cohorts. Survival analysis was performed using recurrence and progression for NMIBC, or death for MIBC. Internal validation was performed by bootstrap analysis, and decision curve analysis was used to evaluate the clinical benefit on disease prognosis. Results GAS5 levels were significantly downregulated in BlCa and associated with invasive high-grade tumours, and high EORTC-risk NMIBC patients. GAS5 loss was strongly and independently correlated with higher risk for NMIBC early relapse (HR = 2.680, p = 0.011) and progression (HR = 6.362, p = 0.035). Hedegaard et al. and TCGA validation cohorts’ analysis clearly confirmed the association of GAS5 loss with NMIBC worse prognosis. Finally, multivariate models incorporating GAS5 with disease established markers resulted in higher clinical benefit for NMIBC prognosis. Conclusions GAS5 loss is associated with adverse outcome of NMIBC and results in improved positive prediction of NMIBC patients at higher risk for short-term relapse and progression, supporting personalised prognosis and treatment decisions.
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Affiliation(s)
- Margaritis Avgeris
- Department of Biochemistry and Molecular Biology, Faculty of Biology, National and Kapodostrian University of Athens, Athens, Greece
| | - Anastasia Tsilimantou
- Department of Biochemistry and Molecular Biology, Faculty of Biology, National and Kapodostrian University of Athens, Athens, Greece
| | - Panagiotis K Levis
- First Department of Urology, "Laiko" General Hospital, Medical School, National and Kapodostrian University of Athens, Athens, Greece
| | - Theodoros Tokas
- First Department of Urology, "Laiko" General Hospital, Medical School, National and Kapodostrian University of Athens, Athens, Greece
| | - Diamantis C Sideris
- Department of Biochemistry and Molecular Biology, Faculty of Biology, National and Kapodostrian University of Athens, Athens, Greece
| | - Konstantinos Stravodimos
- First Department of Urology, "Laiko" General Hospital, Medical School, National and Kapodostrian University of Athens, Athens, Greece
| | - Alexandros Ardavanis
- First Medical Oncology Clinic, "Saint Savvas" Anticancer Hospital, Athens, Greece
| | - Andreas Scorilas
- Department of Biochemistry and Molecular Biology, Faculty of Biology, National and Kapodostrian University of Athens, Athens, Greece.
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Zhu L, Zhu Q, Wen H, Huang X, Zheng G. Mutations in GAS5 affect the transformation from benign prostate proliferation to aggressive prostate cancer by affecting the transcription efficiency of GAS5. J Cell Physiol 2018; 234:8928-8940. [PMID: 30317620 DOI: 10.1002/jcp.27561] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2018] [Accepted: 09/13/2018] [Indexed: 12/31/2022]
Abstract
BACKGROUND In this study, we aimed to explore the effects of GAS5 single-nucleotide polymorphisms (SNPs) on GAS5 expression. And the signaling pathways underlying the function of GAS5 during the pathogenesis of prostate cancer (PC) were clarified. MATERIALS AND METHODS Patients with PC were recruited and grouped according to their specific genotypes of rs55829688 and rs145204276. Kaplan-Meier overall survival curves were calculated and compared among different groups. Real-time polymerase chain reaction (RT-PCR), western blot, and immunohistochemistry (IHC) assays were conducted to examine the expression of different factors involved in PC. And computational analyses and luciferase assays were conducted to clarify the regulatory relationships among the above factors. MTT (3-[4,5-dimethylthiazol-2-yl]-2,5 diphenyl tetrazolium bromide), flow cytometry, and TUNEL (terminal deoxynucleotidyl transferase dUTP nick end labeling) assays were used to evaluate cell viability and apoptosis. RESULTS The expression of GAS5, PDCD4, PTEN, and AKT was decreased gradually in the order of patient Group 1-4, whereas the expression of microRNA-21 (miR-21) and miR-1284 showed an opposite trend. GAS5 was identified to target miR-21 and miR-1284, whereas miR-21 and miR-1284 regulated the expression of PDCD4/PTEN and AKT, respectively. Moreover, the GAS5/miR-21/PDCD4/PTEN and GAS5/miR-1284/AKT signaling pathway was found to be closely related to the tumorigenesis of PC. CONCLUSIONS GAS5 SNPs affected the survival rate and prognosis in patients with PC via regulating the expression of miR-21/miR-1284, which in turn affected the expression of PDCD4, PTEN, and AKT. GAS5 downregulated the expression of miR-21/miR-1284, thus leading to the elevated expression of key regulators of apoptosis. Therefore, the GAS5 SNPs may be used as key indicators for the diagnosis and prognosis prediction of PC.
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Affiliation(s)
- Lizhen Zhu
- Department of Urology, People's Hospital of Ruian, Ruian, Zhejiang, China
| | - Qi Zhu
- Department of Hand Surgery, People's Hospital of Ruian, Ruian, Zhejiang, China
| | - Huihuang Wen
- Department of Urology, People's Hospital of Ruian, Ruian, Zhejiang, China
| | - Xiang Huang
- Department of Urology, People's Hospital of Ruian, Ruian, Zhejiang, China
| | - Ge Zheng
- Department of Pediatrics, People's Hospital of Ruian, Ruian, Zhejiang, China
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Yu H, Rong L. Emerging role of long non-coding RNA in the development of gastric cancer. World J Gastrointest Oncol 2018; 10:260-270. [PMID: 30254721 PMCID: PMC6147769 DOI: 10.4251/wjgo.v10.i9.260] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 06/14/2018] [Accepted: 06/27/2018] [Indexed: 02/05/2023] Open
Abstract
Gastric cancer is a common, worldwide malignancy and has a poor prognosis due to late diagnosis. Long non-coding RNAs (lncRNAs) are a significant subtype of RNA molecules with a length longer than 200 nucleotides (nt) that rarely encode proteins. In recent decades, deregulation of lncRNAs has been shown to be involved in tumorigenesis and tumor progression in various human carcinomas, including gastric cancer. Accumulating evidence has shown that some lncRNAs may function as diagnostic biomarkers or therapeutic targets for gastric cancer. Thus, exploring the specific functions of lncRNAs will help both gain a better understanding of the pathogenesis and develop novel treatments for gastric cancer. In this review, we highlight the expression and functional roles of lncRNAs in gastric cancer, and analyze the potential applications of lncRNAs as diagnostic markers and therapeutic targets.
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Affiliation(s)
- Hang Yu
- Department of Endoscopic Center, Peking University First Hospital, Beijing 100034, China
| | - Long Rong
- Department of Endoscopic Center, Peking University First Hospital, Beijing 100034, China
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Zhao H, Yu H, Zheng J, Ning N, Tang F, Yang Y, Wang Y. Lowly-expressed lncRNA GAS5 facilitates progression of ovarian cancer through targeting miR-196-5p and thereby regulating HOXA5. Gynecol Oncol 2018; 151:345-355. [PMID: 30201235 DOI: 10.1016/j.ygyno.2018.08.032] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 08/22/2018] [Accepted: 08/23/2018] [Indexed: 12/19/2022]
Abstract
PURPOSE This investigation was aimed at extrapolating whether and how lncRNA GAS5, miR-196a-5p and HOXA5 altered progression of ovarian cancer (OA). METHOD Totally 195 pairs of OA tissues and adjacent normal tissues were collected. Also si-GAS5, pcDNA-GAS5, miR-196a-5p mimic, miR-196a-5p inhibitor and negative control (NC) were, respectively, transfected into OA cells. Besides, dual-luciferase reporter gene assay was performed to validate the targeted relationships between GAS5 and miR-196a-5p, as well as between miR-196a-5p and HOXA5. The impacts of GAS5, miR-196a-5p and HOXA5 on viability, proliferation and apoptosis of OA cells were appraised via conduction of colony formation assay, MTT assay and flow cytometry assay. RESULT Lower GAS5 expression and higher miR-196a-5p expression were associated with larger tumor size (≥5 cm) and more advanced FIGO stage (III-IV) of OA patients (P < 0.05). Transfection of si-GAS5, miR-196a-5p mimic or si-HOXA5 conferred OA cells with stronger viability, faster proliferation and smaller percentage of apoptosis (P < 0.05). After injecting mice models with si-GAS5, miR-196a-5p mimic or si-HOXA5, a larger tumor size was also observed within the rats (P < 0.05). GAS5 was indicated to directly target miR-196a-5p and modify its expression, and the targeted relationship also seemed to exist between miR-196a-5p and HOXA5 (P < 0.05). The HOXA5 was found to reverse the effects imposed by miR-196a-5p on viability, proliferation and apoptosis of OA cells (P < 0.05). CONCLUSION LncRNA GAS5 depressed OA development by targeting miR-196a-5p and thereby down-regulating HOXA5 expression, providing substance for developing lncRNA-based strategies to treat OA.
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Affiliation(s)
- Hongmin Zhao
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Harbin Medical University, Harbin City, Heilongjiang Province 150001, China
| | - Hongli Yu
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Harbin Medical University, Harbin City, Heilongjiang Province 150001, China
| | - Jianhua Zheng
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Harbin Medical University, Harbin City, Heilongjiang Province 150001, China
| | - Ning Ning
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Harbin Medical University, Harbin City, Heilongjiang Province 150001, China
| | - Fanglan Tang
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Harbin Medical University, Harbin City, Heilongjiang Province 150001, China
| | - Yang Yang
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Harbin Medical University, Harbin City, Heilongjiang Province 150001, China
| | - Yan Wang
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Harbin Medical University, Harbin City, Heilongjiang Province 150001, China.
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Hao S, Liu X, Sui X, Pei Y, Liang Z, Zhou N. Long non-coding RNA GAS5 reduces cardiomyocyte apoptosis induced by MI through sema3a. Int J Biol Macromol 2018; 120:371-377. [PMID: 30099044 DOI: 10.1016/j.ijbiomac.2018.08.039] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Revised: 08/08/2018] [Accepted: 08/08/2018] [Indexed: 01/19/2023]
Abstract
OBJECTIVE To investigate the role of GAS5 on cardiomyocyte apoptosis. METHODS Myocardial infarction (MI) model was established by the left-anterior descending coronary artery ligation. Norepinephrine (NE) was used to induce cardiomyocyte apoptosis. GAS5 levels and mRNA expressions of Semaphorin 3a (sema3a) were measured by qRT-PCR. Protein level of sema3a was detected by Western blotting. Cardiomyocyte apoptosis was detected by flow cytometry assay. RNA pull-down and RIP assay were used to verify the combination between GAS5 and sema3a. Infarct size was measured by TTC staining. RESULTS GAS5 expression was increased in infarct boundary zone of MI group, while sema3a protein expression was decreased. Moreover, GAS5 expression in cardiomyocyte induced by NE was higher than control group, while sema3a protein expression was lower than control group. In addition, GAS5 could negatively regulate sema3a protein expression. pcDNA-GAS5 reversed cardiomyocyte apoptosis induced by NE, while pcDNA-sema3a countered the inhibitory effect. In animal experiment, overexpression of GAS5 decreased sema3a protein expression and reduced infarct size. CONCLUSION GAS5 could ameliorate cardiomyocyte apoptosis induced by MI via down-regulating sema3a.
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Affiliation(s)
- Shuang Hao
- Department of Cardiac surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Xiaokang Liu
- Department of Orthopedics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Xin Sui
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Yu Pei
- Department of Cardiac surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Zhenxing Liang
- Department of Cardiac surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Nan Zhou
- Department of Orthopedics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China.
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Yuan J, Zhang N, Zheng Y, Chen YD, Liu J, Yang M. LncRNA GAS5 Indel Genetic Polymorphism Contributes to Glioma Risk Through Interfering Binding of Transcriptional Factor TFAP2A. DNA Cell Biol 2018; 37:750-757. [PMID: 30074406 DOI: 10.1089/dna.2018.4215] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Long noncoding RNA (lncRNA) growth arrest-specific 5 (GAS5) accumulates in growth-arrested cells and plays a crucial role in progression of multiple cancers, including glioma. There is a functional GAS5 rs145204276 indel genetic polymorphism in the promoter region. However, it is still largely unknown how the GAS5 indel genetic polymorphism is involved in etiology of glioma. We evaluated the association between the GAS5 indel genetic polymorphism and glioma development in a Chinese population. Odds ratios (ORs) and 95% confidence intervals (CIs) were estimated by logistic regression adjusted by age and sex. We found that carriers of the GAS5 del allele was significantly associated with elevated risk of glioma (OR = 1.71, 95% CI = 1.34-2.18, p = 1.7 × 10-5). Compared with the GAS5 ins/ins genotype, the ins/del genotype or the del/del genotype was significantly associated with 1.57-fold or 2.61-fold increased glioma susceptibility (p = 0.001 or p = 9.0 × 10-6). When patients were stratified by disease subtypes, The GAS5 indel polymorphism was not significantly associated with risk of oligodendroglial tumor (p = 0.353). Integrated analyses indicated that the GAS5 indel polymorphism might alert the binding of transcriptional factor TFAP2A and activation of its expression based on ENCODE and REMBRANDT databases. Our results highlight the importance and potential of the biological relevance of the GAS5 indel genetic variant in glioma predisposition.
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Affiliation(s)
- Jupeng Yuan
- 1 Shandong Provincial Key Laboratory of Radiation Oncology, Cancer Research Center, Shandong Cancer Hospital Affiliated to Shandong University , Shandong Academy of Medical Sciences, Jinan, China
| | - Nasha Zhang
- 1 Shandong Provincial Key Laboratory of Radiation Oncology, Cancer Research Center, Shandong Cancer Hospital Affiliated to Shandong University , Shandong Academy of Medical Sciences, Jinan, China .,2 Cheeloo College of Medicine, Shandong University , Jinan, China
| | - Yan Zheng
- 1 Shandong Provincial Key Laboratory of Radiation Oncology, Cancer Research Center, Shandong Cancer Hospital Affiliated to Shandong University , Shandong Academy of Medical Sciences, Jinan, China .,2 Cheeloo College of Medicine, Shandong University , Jinan, China .,3 Central Laboratory, Jinan Central Hospital Affiliated to Shandong University , Jinan, China
| | - Yi-Dong Chen
- 4 Department of Radiation Oncology, Beijing Shijitan Hospital, Capital Medical University , Beijing, China
| | - Jie Liu
- 1 Shandong Provincial Key Laboratory of Radiation Oncology, Cancer Research Center, Shandong Cancer Hospital Affiliated to Shandong University , Shandong Academy of Medical Sciences, Jinan, China
| | - Ming Yang
- 1 Shandong Provincial Key Laboratory of Radiation Oncology, Cancer Research Center, Shandong Cancer Hospital Affiliated to Shandong University , Shandong Academy of Medical Sciences, Jinan, China
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Rafiee A, Riazi-Rad F, Havaskary M, Nuri F. Long noncoding RNAs: regulation, function and cancer. Biotechnol Genet Eng Rev 2018; 34:153-180. [PMID: 30071765 DOI: 10.1080/02648725.2018.1471566] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Long noncoding RNAs (lncRNAs) are non-protein-coding RNA transcripts that exert a key role in many cellular processes and have potential toward addressing disease etiology. Here, we review existing noncoding RNA classes and then describe a variety of mechanisms and functions by which lncRNAs regulate gene expression such as chromatin remodeling, genomic imprinting, gene transcription and post-transcriptional processing. We also examine several lncRNAs that contribute significantly to pathogenesis, oncogenesis, tumor suppression and cell cycle arrest of diverse cancer types and also give a summary of the pathways that lncRNAs might be involved in.
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Affiliation(s)
- Aras Rafiee
- a Department of Biology , Central Tehran Branch, Islamic Azad University , Tehran , Iran
| | - Farhad Riazi-Rad
- b Immunology Department , Pasteur institute of Iran , Tehran , Iran
| | - Mohammad Havaskary
- c Young Researchers Club, Central Tehran Branch, Islamic Azad University , Tehran , Iran
| | - Fatemeh Nuri
- d Department of Biology , Central Tehran Branch, Islamic Azad University , Tehran , Iran
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Ke K, Sun Z, Wang Z. Downregulation of long non-coding RNA GAS5 promotes cell proliferation, migration and invasion in esophageal squamous cell carcinoma. Oncol Lett 2018; 16:1801-1808. [PMID: 30008868 PMCID: PMC6036321 DOI: 10.3892/ol.2018.8797] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Accepted: 01/12/2018] [Indexed: 01/10/2023] Open
Abstract
The present study aimed to investigate the potential role of long non-coding RNA growth arrest-specific transcript 5 (lncRNA GAS5) in the progression of esophageal squamous cell carcinoma (ESCC) and to reveal its possible regulatory mechanism. The expression of lncRNA GAS5 in ESCC tissues and cell lines was analyzed using reverse transcription-quantitative polymerase chain reaction and western blot analysis. The overexpression vector pc-GAS5 and control vector pc-negative control (NC), containing no GAS5 sequence, were transfected into ESCC cells. The effects of lncRNA GAS5 overexpression on cell proliferation, cell cycle distribution, cell migration and invasion were then analyzed. Besides, the expression levels of ATM-CHK2 pathway-associated proteins and epithelial-mesenchymal transition (EMT)-associated proteins were measured. Expression of lncRNA GAS5 was downregulated in the ESCC tissues compared with adjacent normal tissues, and was also downregulated in ESCC Kyse450 cells compared with the human esophageal epithelial HET-1A cell line. Additionally, lncRNA GAS5 was successfully overexpressed in ESCC cells following transfection with pc-GAS5. Overexpression of lncRNA GAS5 significantly inhibited cell proliferation, induced cell cycle arrest at G2/M phase and suppressed cellular migration and invasion. When cells were transfected with pc-GAS5, the levels of phosphorylated (p)-ATM serine/threonine protein kinase, p-checkpoint kinase 2 (CHK2), p-cell division cycle 25C, p-cyclin-dependent kinase 1, N-cadherin, vimentin and Snail were significantly increased, whereas that of E-cadherin were markedly decreased. The results of the present study indicate that overexpression of lncRNA GAS5 may inhibit cell proliferation, migration and invasion in ESCC. lncRNA GAS5 overexpression may induce cell cycle arrest at G2/M stage by activating the ATM-CHK2 pathway. The results of the current study further indicate that lncRNA GAS5 overexpression may suppress cell migration and invasion via EMT-associated proteins. lncRNA GAS5 could therefore serve as a potential target for ESCC therapy.
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Affiliation(s)
- Ke Ke
- Department of Head and Neck (Esophagus) Medical Oncology, Huangshi Central Hospital of Edong Healthcare Group, Affiliated Hospital of Hubei Polytechnic University, Huangshi, Hubei 435000, P.R. China
- Hubei Key Laboratory of Kidney Disease Pathogenesis and Intervention, Huangshi Central Hospital of Edong Healthcare Group, Affiliated Hospital of Hubei Polytechnic University, Huangshi, Hubei 435000, P.R. China
| | - Zhanwen Sun
- Hubei Key Laboratory of Kidney Disease Pathogenesis and Intervention, Huangshi Central Hospital of Edong Healthcare Group, Affiliated Hospital of Hubei Polytechnic University, Huangshi, Hubei 435000, P.R. China
- Department of Cardiothoracic Surgery, Huangshi Central Hospital of Edong Healthcare Group, Affiliated Hospital of Hubei Polytechnic University, Huangshi, Hubei 435000, P.R. China
| | - Zhengjun Wang
- Hubei Key Laboratory of Kidney Disease Pathogenesis and Intervention, Huangshi Central Hospital of Edong Healthcare Group, Affiliated Hospital of Hubei Polytechnic University, Huangshi, Hubei 435000, P.R. China
- Department of Cardiothoracic Surgery, Huangshi Central Hospital of Edong Healthcare Group, Affiliated Hospital of Hubei Polytechnic University, Huangshi, Hubei 435000, P.R. China
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Bayat H, Narouie B, Ziaee SAM, Mowla SJ. Two long non-coding RNAs, Prcat17.3 and Prcat38, could efficiently discriminate benign prostate hyperplasia from prostate cancer. Prostate 2018; 78:812-818. [PMID: 29671889 DOI: 10.1002/pros.23538] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Accepted: 03/28/2018] [Indexed: 12/29/2022]
Abstract
BACKGROUND Long non-coding RNAs (lncRNAs) have recently appeared as new players in cancer biology. Recently, a number of new prostate cancer-associated lncRNAs has been listed via RNA-seq approach by Mitranscriptome project. By analyzing this data we chose four lncRNAs (Prcat17.3, Prcat38, Prcat47, and Cat2184.4) and evaluated their expressions and their abilities to discriminate prostate tumors from benign prostate hyperplasia (BPH). METHODS Fresh Prostate tissue samples (30 BPH, and 30 tumor samples) and urine samples (19 BPH, and 19 tumor samples) were collected and their total RNA extracted for cDNA syntheses. The expression of candidate lncRNAs was assessed by the real-time PCR technique. RESULTS Our data revealed that the expression levels of PRCAT17.3 (P < 0.0001) and PRCAT38 (P < 0.0002) were significantly upregulated in human prostate cancer tissues, compared to BPH ones. Moreover, the altered expression was much higher for PRCAT17.3 (∼2000 folds) than PRCAT38 (∼50 folds). In contrast, the expression of Cat2184.4 showed a significant down-regulation in tumor samples (P < 0.0001), compared to BPH ones. While the expression level of PRCAT47 was increased in cancer samples, the changes were not statistically significant. In discriminating prostate tumors from BPH samples, Prcat17.3 (AUC-ROC, 0.927) demonstrated a better diagnostic efficacy than Prcat38 (AUC-ROC, 0.778). Moreover, real-time RT-PCR analyses on urine samples of prostate cancer patients revealed that prcat17.3 level is significantly elevated, (P < 0.0197; AUC-ROC value of 0.72), compared to that of BPH patients. CONCLUSION We introduce here two novel lncRNAs with a potential application in diagnosis of prostate cancer.
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Affiliation(s)
- Hamid Bayat
- Faculty of Biological Sciences, Department of Genetics, Tarbiat Modares University, Tehran, Iran
| | - Behzad Narouie
- Urology and Nephrology Research Centre, Labbafi-Nejad Medical Centre, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Seyed-Amir Mohsen Ziaee
- Urology and Nephrology Research Centre, Labbafi-Nejad Medical Centre, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Seyed Javad Mowla
- Faculty of Biological Sciences, Department of Genetics, Tarbiat Modares University, Tehran, Iran
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Yi C, Wan X, Zhang Y, Fu F, Zhao C, Qin R, Wu H, Li Y, Huang Y. SNORA42 enhances prostate cancer cell viability, migration and EMT and is correlated with prostate cancer poor prognosis. Int J Biochem Cell Biol 2018; 102:138-150. [PMID: 30053504 DOI: 10.1016/j.biocel.2018.07.009] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 07/18/2018] [Accepted: 07/23/2018] [Indexed: 01/21/2023]
Abstract
Prostate cancer (PCa) is one of the most common invasive cancers and the second leading cause of cancer-related death in male worldwide, reflecting the needs of diagnostic and prognostic biomarkers for PCa. Emerging evidence has revealed small nucleolar RNAs (snoRNAs) playing a significant role in tumorigenesis and cancer progression. However, there are few reports about snoRNAs in PCa. Here, we found SNORA42 rather than its host gene (KIAA0907) was up-regulated in PCa cell lines. Meanwhile, an obvious up-regulation of SNORA42 was observed in cancer tissues compared to their adjacent normal tissues. SNORA42 could be induced by DHT stimulation. Over-expression of SNORA42 increased prostate cancer cell proliferation and inhibited apoptosis. Importantly, SNORA42 increased prostate cancer cell migration and invasion. Higher SNORA42 expression level was found to be correlated with shorter survival in metastatic PCa tissues by Kaplan-Meier survival analysis, but this effect was not found in primary PCa tissues. In conclusion, over-expression of SNORA42 could have an oncogenic effect on the progression of PCa. SNORA42 might serve as a prognostic biomarker in PCa.
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Affiliation(s)
- Chuanyou Yi
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai 200433, PR China
| | - Xuechao Wan
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai 200433, PR China
| | - Yufeng Zhang
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai 200433, PR China
| | - Fangqiu Fu
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai 200433, PR China
| | - Chen Zhao
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai 200433, PR China
| | - Rui Qin
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai 200433, PR China
| | - Hai Wu
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai 200433, PR China
| | - Yao Li
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai 200433, PR China
| | - Yan Huang
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai 200433, PR China.
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Murugesan SN, Yadav BS, Maurya PK, Chaudhary A, Singh S, Mani A. Expression and network analysis of YBX1 interactors for identification of new drug targets in lung adenocarcinoma. J Genomics 2018; 6:103-112. [PMID: 29973960 PMCID: PMC6030768 DOI: 10.7150/jgen.20581] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2017] [Accepted: 08/31/2017] [Indexed: 12/27/2022] Open
Abstract
Y-Box Binding protein 1 (YBX-1) is known to be involved in various types of cancers. It's interactors also play major role in various cellular functions. Present work aimed to study the expression profile of the YBX-1 interactors during lung adenocarcinoma (LUAD). The differential expression analysis involved 57 genes from 95 lung adenocarcinoma samples, construction of gene network and topology analysis. A Total of 43 genes were found to be differentially expressed from which 17 genes were found to be down regulated and 26 genes were up-regulated. We observed that Polyadenylate-binding protein 1 (PABPC1), a protein involved in YBX1 translation, is highly correlated with YBX1. The interaction network analysis for a differentially expressed non-coding RNA Growth Arrest Specific 5 (GAS5) suggests that two proteins namely, Growth Arrest Specific 2 (GAS2) and Peripheral myelin protein 22 (PMP22) are potentially involved in LUAD progression. The network analysis and differential expression suggests that Collagen type 1 alpha 2 (COL1A2) can be potential biomarker and target for LUAD.
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Affiliation(s)
| | - Birendra Singh Yadav
- Department of Biotechnology, Motilal Nehru National Institute of Technology, Allahabad, India-211004
| | - Pramod Kumar Maurya
- Department of Biotechnology, Motilal Nehru National Institute of Technology, Allahabad, India-211004
| | - Amit Chaudhary
- Department of Biotechnology, Motilal Nehru National Institute of Technology, Allahabad, India-211004
| | - Swati Singh
- Center of Bioinformatics, University of Allahabad, India-211002
| | - Ashutosh Mani
- Department of Biotechnology, Motilal Nehru National Institute of Technology, Allahabad, India-211004
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130
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Noncoding RNAs: Stress, Glucocorticoids, and Posttraumatic Stress Disorder. Biol Psychiatry 2018; 83:849-865. [PMID: 29559087 DOI: 10.1016/j.biopsych.2018.01.009] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Revised: 01/07/2018] [Accepted: 01/08/2018] [Indexed: 12/12/2022]
Abstract
Posttraumatic stress disorder (PTSD) is a pathologic response to trauma that impacts ∼8% of the population and is highly comorbid with other disorders, such as traumatic brain injury. PTSD affects multiple biological systems throughout the body, including the hypothalamic-pituitary-adrenal axis, cortical function, and the immune system, and while the study of the biological underpinnings of PTSD and related disorders are numerous, the roles of noncoding RNAs (ncRNAs) are just emerging. Moreover, deep sequencing has revealed that ncRNAs represent most of the transcribed mammalian genome. Here, we present developing evidence that ncRNAs are involved in critical aspects of PTSD pathophysiology. In that regard, we summarize the roles of three classes of ncRNAs in PTSD and related disorders: microRNAs, long-noncoding RNAs, and retrotransposons. This review evaluates findings from both animal and human studies with a special focus on the role of ncRNAs in hypothalamic-pituitary-adrenal axis abnormalities and glucocorticoid dysfunction in PTSD and traumatic brain injury. We conclude that ncRNAs may prove to be useful biomarkers to facilitate personalized medicines for trauma-related brain disorders.
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131
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Li J, Yang C, Li Y, Chen A, Li L, You Z. LncRNA GAS5 suppresses ovarian cancer by inducing inflammasome formation. Biosci Rep 2018; 38:BSR20171150. [PMID: 29229673 PMCID: PMC5857912 DOI: 10.1042/bsr20171150] [Citation(s) in RCA: 82] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Revised: 12/05/2017] [Accepted: 12/08/2017] [Indexed: 01/01/2023] Open
Abstract
OBJECTIVE Long non-coding RNA growth arrest-specific transcript 5 (lncRNA GAS5) is involved in various kinds of cancer. However, the role of lncGAS5 in the development of ovarian cancer remains unclear. In the current study, we explored the cellular mechanism and clinical value of lncRNA GAS5 in ovarian cancer. METHODS Quantitative real-time PCR was used to detect mRNA level of LncRNA GAS5 in 20 ovarian cancer tissues. The effect of lncRNA GAS5 on cell proliferation was performed using CCK-8 assay. Cell apoptosis was evaluated by flow cytometry. Western blotting was used to detect the protein level of lncRNA GAS5 potential target. Standard sandwich ELISA was used to quantify the level of inflammatory cytokines. The cells with stable expression of lncRNA GAS5 were injected into nude mice to study the effect of lncRNA GAS5 on tumorigenesis in vivo. Results: The expression of lncRNA GAS5 was significantly decreased in ovarian cancer tissues. Decrease in lncRNA GAS5 expression resulted in increased cell proliferation and colony formation and reduced ovarian cancer cell apoptosis. In contrast, exogenous overexpression of lncRNA GAS5 in ovarian cancer cells inhibited proliferation, colony formation and apoptosis in ovarian cancer cells. In addition, the role of lncRNA GAS5 in ovarian cancer was associated with inflammasome formation and pyroptosis. CONCLUSION These results suggested that lncRNA GAS5 acts as tumor suppressor and could be used as a potential treatment target for diagnosis and therapy of ovarian cancer.
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Affiliation(s)
- Jie Li
- Department of Gynecology, The Eastern Hospital of the First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510700, China
| | - Chen Yang
- Gynecology department of physical examination center, The Eastern Hospital of the First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Yinguang Li
- Department of Gynecology, The Eastern Hospital of the First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Aiyue Chen
- Department of Gynecology, The Eastern Hospital of the First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Li Li
- Department of Gynecology, The Eastern Hospital of the First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Zeshan You
- Department of Gynecology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, China
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Mitobe Y, Takayama KI, Horie-Inoue K, Inoue S. Prostate cancer-associated lncRNAs. Cancer Lett 2018; 418:159-166. [DOI: 10.1016/j.canlet.2018.01.012] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Revised: 12/19/2017] [Accepted: 01/06/2018] [Indexed: 01/01/2023]
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133
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Zhang Y, Kong Z, Zhang Y, Huang W, Wu H, Wan X, Li Y. Increased expression of long non-coding RNA GLIDR in prostate cancer. Cancer Biomark 2018; 19:145-150. [PMID: 28211799 DOI: 10.3233/cbm-160166] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Prostate cancer (PCa) was one of the most common cancers in males in China. Long non-coding RNAs (lncRNA), a class of non-coding RNAs with more than 200 nucleotides, played key roles in the progression of prostate cancer. GLIDR, a novel long intergenic ncRNA, was found to be upregulated in tumors compared to normal tissues by using publically databases. In the clinical validation cohort, our results showed GLIDR was significantly up-regulated in prostate cancer samples and cell lines. To explore the potential functions of the GLIDR, we constructed gene co-expression networks and applied GO analysis. Our analysis revealed that GLIDR was involved in the regulation of translational elongation, transcription, rRNA processing, RNA splicing, signal transduction, and cell adhesion. Furthermore, a GLIDR-mediated ceRNA network in prostate cancer was also identified. We believed that this study still provided some clues in exploring new therapeutic and prognostic targets for prostate cancer.
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Affiliation(s)
- Yingyi Zhang
- Department of Oncology, Changhai Hospital, Second Military Medical University, Shanghai 200433, China.,State Key Laboratory of Genetic Engineering, Institute of Genetics, School of Life Science, Fudan University, Shanghai 200433, China
| | - Zhe Kong
- State Key Laboratory of Genetic Engineering, Institute of Genetics, School of Life Science, Fudan University, Shanghai 200433, China.,State Key Laboratory of Genetic Engineering, Institute of Genetics, School of Life Science, Fudan University, Shanghai 200433, China
| | - Yalong Zhang
- State Key Laboratory of Genetic Engineering, Institute of Genetics, School of Life Science, Fudan University, Shanghai 200433, China
| | - Wenhua Huang
- State Key Laboratory of Genetic Engineering, Institute of Genetics, School of Life Science, Fudan University, Shanghai 200433, China
| | - Hai Wu
- State Key Laboratory of Genetic Engineering, Institute of Genetics, School of Life Science, Fudan University, Shanghai 200433, China
| | - Xuechao Wan
- State Key Laboratory of Genetic Engineering, Institute of Genetics, School of Life Science, Fudan University, Shanghai 200433, China
| | - Yao Li
- State Key Laboratory of Genetic Engineering, Institute of Genetics, School of Life Science, Fudan University, Shanghai 200433, China
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134
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Zhou G, Kang D, Ma S, Wang X, Gao Y, Yang Y, Wang X, Chen Y. Integrative analysis reveals ncRNA-mediated molecular regulatory network driving secondary hair follicle regression in cashmere goats. BMC Genomics 2018; 19:222. [PMID: 29587631 PMCID: PMC5870523 DOI: 10.1186/s12864-018-4603-3] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Accepted: 03/13/2018] [Indexed: 02/06/2023] Open
Abstract
Background Cashmere is a keratinized product derived from the secondary hair follicles (SHFs) of cashmere goat skins. The cashmere fiber stops growing following the transition from the actively proliferating anagen stage to the apoptosis-driven catagen stage. However, little is known regarding the molecular mechanisms responsible for the occurrence of apoptosis in SHFs, especially as pertains to the role of non-coding RNAs (ncRNAs) and their interactions with other molecules. Hair follicle (HF) degeneration is caused by localized apoptosis in the skin, while anti-apoptosis pathways may coexist in adjacent HFs. Thus, elucidating the molecular interactions responsible for apoptosis and anti-apoptosis in the skin will provide insights into HF regression. Results We used multiple-omics approaches to systematically identify long non-coding RNAs (lncRNAs), microRNAs (miRNAs) and mRNAs expressed in cashmere goat skins in two crucial phases (catagen vs. anagen) of HF growth. Skin samples were collected from three cashmere goats at the anagen (September) and catagen (February) stages, and six lncRNA libraries and six miRNA libraries were constructed for further analysis. We identified 1122 known and 403 novel lncRNAs in the goat skins, 173 of which were differentially expressed between the anagen and catagen stages. We further identified 3500 gene-encoding transcripts that were differentially expressed between these two phases. We also identified 411 known miRNAs and 307 novel miRNAs, including 72 differentially expressed miRNAs. We further investigated the target genes of lncRNAs via both cis- and trans-regulation during HF growth. Our data suggest that lncRNAs and miRNAs act synergistically in the HF growth transition, and the catagen inducer factors (TGFβ1 and BDNF) were regulated by miR-873 and lnc108635596 in the lncRNA-miRNA-mRNA networks. Conclusion This study enriches the repertoire of ncRNAs in goats and other mammals, and contributes to a better understanding of the molecular mechanisms of ncRNAs involved in the regulation of HF growth and regression in goats and other hair-producing species. Electronic supplementary material The online version of this article (10.1186/s12864-018-4603-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Guangxian Zhou
- College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, China
| | - Danju Kang
- College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, China
| | - Sen Ma
- College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, China
| | - Xingtao Wang
- College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, China
| | - Ye Gao
- College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, China
| | - Yuxin Yang
- College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, China
| | - Xiaolong Wang
- College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, China.
| | - Yulin Chen
- College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, China.
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135
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Fei Q, Bai X, Lin J, Meng H, Yang Y, Guo A. Identification of aberrantly expressed long non-coding RNAs in postmenopausal osteoporosis. Int J Mol Med 2018; 41:3537-3550. [PMID: 29568943 PMCID: PMC5881766 DOI: 10.3892/ijmm.2018.3575] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Accepted: 02/14/2018] [Indexed: 01/03/2023] Open
Abstract
Postmenopausal osteoporosis (PMOP) is a common skeletal disorder in postmenopausal women. The present study aimed to identify the key long non‑coding RNAs (lncRNAs) in PMOP through RNA sequencing. RNA sequencing was performed to obtain the expression profile of lncRNAs and mRNAs in blood samples of patients with PMOP and normal controls (NCs). Following the identification of differentially expressed mRNAs (DEmRNAs) and differentially expressed lncRNAs (DElncRNAs), the DElncRNA-DEmRNA co‑expression network was constructed. A search was performed for the DEGs transcribed within a 100‑kb window upstream or downstream of DElncRNAs, which served as nearby DEmRNAs of DElncRNAs. Functional annotation of the DEmRNAs co‑expressed with DElncRNAs was performed. The GSE56815 dataset was used to verify the expression of selected DEmRNAs and DElncRNAs. Three blood samples from patients with PMOP and two blood samples from NCs were used for RNA sequencing. Compared with the NC group, a total of 185 DEmRNAs and 51 DElncRNAs were obtained in PMOP. A total of 3,057 co‑expression DElncRNA‑DEmRNA pairs and 97 DElncRNA‑nearby DEmRNA pairs were obtained. Six DEmRNAs [diacylglycerol O‑acyltransferase 2, potassium voltage‑gated channel subfamily S member 1, peptidase inhibitor 3, secretory leukocyte peptidase inhibitor, galectin‑related protein and alkaline phosphatase, liver/bone/kidney (ALPL)] were nearby co‑expressed genes of four DElncRNAs, including LOC105376834, LOC101929866, LOC105374771 and LOC100506113. Three PMOP-associated DEmRNAs, including ALPL, suppressor of cytokine signaling 3 and adrenomedullin, were co‑expressed with the hub DElncRNAs (LINC00963, LOC105378415, LOC105377067, HCG27, LOC101928143 and LINC01094) of the positively and negatively co‑expressed DElncRNA‑DEmRNA interaction network. The expression of selected DEmRNAs and DElncRNAs was consistent with the RNA‑sequencing results. In conclusion, the present study identified the key DEmRNAs and DElncRNAs in PMOP, which may provide clues for understanding the mechanism and developing novel biomarkers for PMOP.
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Affiliation(s)
- Qi Fei
- Department of Orthopedics, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, P.R. China
| | - Xiaodong Bai
- Department of Orthopedics, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, P.R. China
| | - Jisheng Lin
- Department of Orthopedics, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, P.R. China
| | - Hai Meng
- Department of Orthopedics, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, P.R. China
| | - Yong Yang
- Department of Orthopedics, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, P.R. China
| | - Ai Guo
- Department of Orthopedics, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, P.R. China
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136
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Xu JH, Chang WH, Fu HW, Yuan T, Chen P. The mRNA, miRNA and lncRNA networks in hepatocellular carcinoma: An integrative transcriptomic analysis from Gene Expression Omnibus. Mol Med Rep 2018; 17:6472-6482. [PMID: 29512731 PMCID: PMC5928629 DOI: 10.3892/mmr.2018.8694] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Accepted: 10/23/2017] [Indexed: 01/01/2023] Open
Abstract
Research advances and analysis in the non-protein coding part of the human genome have suggested that microRNAs (miRNAs) and long noncoding RNAs (lncRNAs) are associated with tumor initiation, growth and metastasis. Accumulating studies have demonstrated that a class of miRNAs and lncRNAs are dysregulated in hepatocellular carcinoma (HCC) and closely associated with tumorigenesis, diagnosis and prognosis. In the present study, integrative analysis of published data on multi-level Gene Expression Omnibus (GEO) and a bioinformatics computational approach were used to predict regulatory mechanism networks among differentially expressed mRNAs, miRNAs, and lncRNAs. Firstly, nine microarray expression data sets of mRNAs, miRNAs, and lncRNAs associated with HCC were collected from GEO datasets. Secondly, a total of 628 mRNAs, 15 miRNAs, and 49 lncRNAs were differentially expressed in this integrative analysis. Following this, mRNA, miRNA and lncRNA regulatory or co-expression networks were constructed. From the construction of the regulatory networks, five miRNAs and ten lncRNAs were identified as key differentially expressed noncoding RNAs associated with HCC progression. Finally, the regulatory effects of ten lncRNAs and miRNAs were validated. The study provides a novel insight into the understanding of the transcriptional regulation of HCC, and differentially expressed lncRNAs targeted and regulated by miRNAs were identified and validated in HCC specimens and cell lines.
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Affiliation(s)
- Jian-Hua Xu
- Department of Hepatobiliary Surgery, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Chongqing 400042, P.R. China
| | - Wei-Hua Chang
- Department of Hepatobiliary Surgery, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Chongqing 400042, P.R. China
| | - Hang-Wei Fu
- Department of Hepatobiliary Surgery, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Chongqing 400042, P.R. China
| | - Tao Yuan
- Department of Hepatobiliary Surgery, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Chongqing 400042, P.R. China
| | - Ping Chen
- Department of Hepatobiliary Surgery, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Chongqing 400042, P.R. China
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137
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Aird J, Baird AM, Lim MC, McDermott R, Finn SP, Gray SG. Carcinogenesis in prostate cancer: The role of long non-coding RNAs. Noncoding RNA Res 2018; 3:29-38. [PMID: 30159437 PMCID: PMC6084828 DOI: 10.1016/j.ncrna.2018.01.001] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Accepted: 01/16/2018] [Indexed: 12/28/2022] Open
Abstract
LncRNAs appear to play a considerable role in tumourigenesis through regulating key processes in cancer cells such as proliferative signalling, replicative immortality, invasion and metastasis, evasion of growth suppressors, induction of angiogenesis and resistance to apoptosis. LncRNAs have been reported to play a role in prostate cancer, particularly in regulating the androgen receptor signalling pathway. In this review article, we summarise the role of 34 lncRNAs in prostate cancer with a particular focus on their role in the androgen receptor signalling pathway and the epithelial to mesenchymal transition pathway.
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Affiliation(s)
- John Aird
- Department of Histopathology and Morbid Anatomy, School of Medicine, Trinity College Dublin, Ireland
| | - Anne-Marie Baird
- Department of Histopathology and Morbid Anatomy, School of Medicine, Trinity College Dublin, Ireland
- Thoracic Oncology Research Group, Trinity Translational Medical Institute, St. James's Hospital, Dublin, Ireland
- Department of Clinical Medicine, Trinity College Dublin, Dublin, Ireland
- Cancer and Ageing Research Program, Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, QLD, Australia
| | - Marvin C.J. Lim
- Department of Histopathology and Morbid Anatomy, School of Medicine, Trinity College Dublin, Ireland
- Department of Medical Oncology, St. Vincent's University Hospital, Dublin, Ireland
- Department of Medical Oncology, Tallaght Hospital, Dublin, Ireland
| | - Ray McDermott
- Department of Medical Oncology, St. Vincent's University Hospital, Dublin, Ireland
- Department of Medical Oncology, Tallaght Hospital, Dublin, Ireland
| | - Stephen P. Finn
- Department of Histopathology and Morbid Anatomy, School of Medicine, Trinity College Dublin, Ireland
- Department of Clinical Medicine, Trinity College Dublin, Dublin, Ireland
| | - Steven G. Gray
- Department of Clinical Medicine, Trinity College Dublin, Dublin, Ireland
- HOPE Directorate, St. James's Hospital, Dublin, Ireland
- Labmed Directorate, St. James's Hospital, Dublin, Ireland
- School of Biological Sciences, Dublin Institute of Technology, Dublin, Ireland
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138
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Nasrollahzadeh-Khakiani M, Emadi-Baygi M, Schulz WA, Nikpour P. Long noncoding RNAs in gastric cancer carcinogenesis and metastasis. Brief Funct Genomics 2018; 16:129-145. [PMID: 27122631 DOI: 10.1093/bfgp/elw011] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Recent studies of the human transcriptome, most prominently by the ENCyclopedia Of DNA Elements project, have revealed an unexpected number of noncoding RNAs (ncRNAs). Long noncoding RNAs (lncRNAs) are typically referred to a heterogeneous group of polyadenylated long ncRNAs, with a length of > 200 nt. LncRNAs constitute an integral part of tumor biology, with many lncRNAs discovered to be aberrantly expressed in various cancer types. They are involved in many aspects of cancer pathogenesis from its initiation to progression, metastasis and treatment response. Gastric cancer (GC) is the third leading cause of cancer death worldwide. Despite the current improvements of life expectancy and survival rate, most of the patients are diagnosed when their cancer has been progressed to advanced stages. Therefore, unraveling the molecular mechanisms of GC to find early-stage biomarkers is urgent. As the list of lncRNAs with deregulated expression in GC is steadily expanding, these molecules offer a source for developing GC-specific biomarkers. In this review, we will present and discuss those lncRNAs whose expression has been shown to be deregulated in GC.
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139
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The long non-coding RNA GAS5 differentially regulates cell cycle arrest and apoptosis through activation of BRCA1 and p53 in human neuroblastoma. Oncotarget 2018; 8:6589-6607. [PMID: 28035057 PMCID: PMC5351655 DOI: 10.18632/oncotarget.14244] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Accepted: 11/30/2016] [Indexed: 01/08/2023] Open
Abstract
The long non-coding RNA GAS5 has been shown to modulate cancer proliferation in numerous human cancer systems and has been correlated with successful patient outcome. Our examination of GAS5 in neuroblastoma has revealed robust expression in both MYCN-amplified and non-amplified cell lines. Knockdown of GAS5 In vitro resulted in defects in cell proliferation, apoptosis, and induced cell cycle arrest. Further analysis of GAS5 clones revealed multiple novel splice variants, two of which inversely modulated with MYCN status. Complementation studies of the variants post-knockdown of GAS5 indicated alternate phenotypes, with one variant (FL) considerably enhancing cell proliferation by rescuing cell cycle arrest and the other (C2) driving apoptosis, suggesting a unique role for each in neuroblastoma cancer physiology. Global sequencing and ELISA arrays revealed that the loss of GAS5 induced p53, BRCA1, and GADD45A, which appeared to modulate cell cycle arrest in concert. Complementation with only the FL GAS5 clone could rescue cell cycle arrest, stabilizing HDM2, and leading to the loss of p53. Together, these data offer novel therapeutic targets in the form of lncRNA splice variants for separate challenges against cancer growth and cell death.
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140
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Zhang ZX, Tong X, Zhang WN, Fu WN. Association between the HOTAIR polymorphisms and cancer risk: an updated meta-analysis. Oncotarget 2018; 8:4460-4470. [PMID: 27965458 PMCID: PMC5354846 DOI: 10.18632/oncotarget.13880] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Accepted: 12/01/2016] [Indexed: 12/17/2022] Open
Abstract
Purpose LncRNA HOTAIR plays an important role in many cancer. Several studies have shown that some HOTAIR SNPs might be associated with tumor risk in case-control studies, but the results are inconsistent and inconclusive. Therefore, it is necessary to better evaluate association between the HOTAIR SNPs and the risk of cancer. Results rs920778, rs7958904 and rs874945 but not rs4759314 and rs1899663 loci were significantly related to cancer risk, among of which rs920778 and rs874945 increased and rs7958904 decreased cancer risk, respectively. Moreover, rs920778 is significantly susceptible in both Asian population and digestive cancer risks. Materials and Methods Data were collected from PubMed, Embase and Web of Science. A total of 11 case-control studies were selected for the quantitative analysis. Software Stata (Version 12) was used to calculate Odds ratios (ORs) and 95% confidence intervals (CIs) to evaluate the strength of the associations. Subgroup analysis, sensitivity analysis, and publication bias were also performed. Five HOTAIR SNPs were finally enrolled in the study. Conclusions HOTAIR SNP rs920778, rs7958904 and rs874945 are susceptible to cancer risk. SNP rs920778 is also a useful risk factor in evaluation of Asian population and digestive cancer. In addition, the cancer risk SNP rs874945 is first reported in the meta-analysis.
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Affiliation(s)
- Zhao-Xiong Zhang
- Department of Medical Genetics, China Medical University, Shenyang, 110122, P.R. China
| | - Xue Tong
- Department of Medical Genetics, China Medical University, Shenyang, 110122, P.R. China
| | - Wan-Ni Zhang
- Department of Medical Genetics, China Medical University, Shenyang, 110122, P.R. China
| | - Wei-Neng Fu
- Department of Medical Genetics, China Medical University, Shenyang, 110122, P.R. China
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141
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Long Noncoding RNA GAS5, Which Acts as a Tumor Suppressor via microRNA 21, Regulates Cisplatin Resistance Expression in Cervical Cancer. Int J Gynecol Cancer 2018; 27:1096-1108. [PMID: 28472815 PMCID: PMC5499972 DOI: 10.1097/igc.0000000000001028] [Citation(s) in RCA: 88] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Objectives The aims of this study were to investigate the functions of GAS5 as a tumor suppressor in cervical cancer and explore the mechanism. Methods The expression of GAS5 and microRNA 21 (miR-21) was detected in primary cervical cancer tissue specimens, as well as in cervical cancer cell lines. We identified the interaction of GAS5 and miR-21 by quantitative polymerase chain reaction, Western blot, and dual-luciferase reporter assay. We also studied the functions of GAS5 in proliferation, apoptosis, migration, and invasion in cervical cancer cells in vitro and vivo. Finally, the impact of GAS5 on cisplatin resistance and its mechanism in cervical cancer cells was also identified. Results The expression of GAS5 and miR-21 was detected in primary cervical cancer tissue specimens, as well as in cervical cancer cell lines. GAS5, which is a tumor suppressor playing roles in inhibiting the malignancy of cervical cancer cells, including proliferation in vivo and vitro, migration, and invasion, has a low expression in cervical cancer tissue and cervical cancer cell lines, whereas miR-21 expression is high. GAS5 significantly decreased the expression of miR-21, and there is a reciprocal repression of gene expression between GAS5 and miR-21. Besides, most importantly, we found that high expression of GAS5 and low expression of miR-21 can enhance the sensitivity of SiHa/cDDP cancer cells to cisplatin. A further experiment for identifying the mechanism of cisplatin resistance by GAS5 showed that GAS5 can not only regulate phosphatase and tensin homolog through miR-21 but also influence the phosphorylation of Akt. Conclusions Our results indicate that GAS5 is a direct target of miR-21 and can predict the clinical staging of cervical cancer. Most importantly, GAS5 can also influence cisplatin resistance in cervical cancer via regulating the phosphorylation of Akt. All of these suggest that GAS5 may be a novel therapeutic target for treating cervical cancer.
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142
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The non-coding landscape of head and neck squamous cell carcinoma. Oncotarget 2018; 7:51211-51222. [PMID: 27323410 PMCID: PMC5239470 DOI: 10.18632/oncotarget.9979] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2016] [Accepted: 05/05/2016] [Indexed: 01/05/2023] Open
Abstract
Head and neck squamous cell carcinoma (HNSCC) is an aggressive disease marked by frequent recurrence and metastasis and stagnant survival rates. To enhance molecular knowledge of HNSCC and define a non-coding RNA (ncRNA) landscape of the disease, we profiled the transcriptome-wide dysregulation of long non-coding RNA (lncRNA), microRNA (miRNA), and PIWI-interacting RNA (piRNA) using RNA-sequencing data from 422 HNSCC patients in The Cancer Genome Atlas (TCGA). 307 non-coding transcripts differentially expressed in HNSCC were significantly correlated with patient survival, and associated with mutations in TP53, CDKN2A, CASP8, PRDM9, and FBXW7 and copy number variations in chromosomes 3, 5, 7, and 18. We also observed widespread ncRNA correlation to concurrent TP53 and chromosome 3p loss, a compelling predictor of poor prognosis in HNSCCs. Three selected ncRNAs were additionally associated with tumor stage, HPV status, and other clinical characteristics, and modulation of their expression in vitro reveals differential regulation of genes involved in epithelial-mesenchymal transition and apoptotic response. This comprehensive characterization of the HNSCC non-coding transcriptome introduces new layers of understanding for the disease, and nominates a novel panel of transcripts with potential utility as prognostic markers or therapeutic targets.
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143
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Corylin Suppresses Hepatocellular Carcinoma Progression via the Inhibition of Epithelial-Mesenchymal Transition, Mediated by Long Noncoding RNA GAS5. Int J Mol Sci 2018; 19:ijms19020380. [PMID: 29382035 PMCID: PMC5855602 DOI: 10.3390/ijms19020380] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2017] [Revised: 01/13/2018] [Accepted: 01/18/2018] [Indexed: 12/16/2022] Open
Abstract
Corylin is a flavonoid extracted from the nuts of Psoralea corylifolia L. (Fabaceae), which is a widely used anti-inflammatory and anticancer herb in China. Recent studies revealed antioxidant, anti-inflammatory, and bone differentiation–promoting effects of corylin. However, there are no studies examining the anticancer activity of corylin. In this study, we used cells and animal models to examine the antitumor effects of corylin on hepatocellular carcinoma (HCC) and then studied its downstream regulatory mechanisms. The results showed that corylin significantly inhibited the proliferation, migration, and invasiveness of HCC cells and suppressed epithelial–mesenchymal transition. We found that the anti-HCC mechanism of corylin’s action lies in the upregulation of tumor suppressor long noncoding RNA growth arrest-specific transcript 5 (GAS5) and the activation of its downstream anticancer pathways. In animal experiments, we also found that corylin can significantly inhibit tumor growth without significant physiological toxicity. The above results suggest that corylin has anti-HCC effects and good potential as a clinical treatment.
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144
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Zhang Y, Luo G, Zhang Y, Zhang M, Zhou J, Gao W, Xuan X, Yang X, Yang D, Tian Z, Ni B, Tang J. Critical effects of long non-coding RNA on fibrosis diseases. Exp Mol Med 2018; 50:e428. [PMID: 29350677 PMCID: PMC5799794 DOI: 10.1038/emm.2017.223] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Revised: 07/03/2017] [Accepted: 07/05/2017] [Indexed: 02/07/2023] Open
Abstract
The expression or dysfunction of long non-coding RNAs (lncRNAs) is closely related to various hereditary diseases, autoimmune diseases, metabolic diseases and tumors. LncRNAs were also recently recognized as functional regulators of fibrosis, which is a secondary process in many of these diseases and a primary pathology in fibrosis diseases. We review the latest findings on lncRNAs in fibrosis diseases of the liver, myocardium, kidney, lung and peritoneum. We also discuss the potential of disease-related lncRNAs as therapeutic targets for the clinical treatment of human fibrosis diseases.
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Affiliation(s)
- Yue Zhang
- Department of Dermatology, 105th Hospital of PLA, Hefei, China.,Department of Pathophysiology and High Altitude Pathology, Third Military Medical University, Chongqing, China.,Graduate School, Bengbu Medical College, Bengbu, China
| | - Gang Luo
- Department of Pathophysiology and High Altitude Pathology, Third Military Medical University, Chongqing, China
| | - Yi Zhang
- Department of Clinical Laboratory, 150th Hospital of PLA, Luoyang, China
| | - Mengjie Zhang
- Department of Pathophysiology and High Altitude Pathology, Third Military Medical University, Chongqing, China
| | - Jian Zhou
- Department of Pathophysiology and High Altitude Pathology, Third Military Medical University, Chongqing, China
| | - Weiwu Gao
- Department of Pathophysiology and High Altitude Pathology, Third Military Medical University, Chongqing, China
| | - Xiuyun Xuan
- Department of Microbiology and Immunology, Shanxi Medical University, Taiyuan, China
| | - Xia Yang
- Institute of Immunology, PLA, Third Military Medical University, Chongqing, China
| | - Di Yang
- Institute of Immunology, PLA, Third Military Medical University, Chongqing, China
| | - Zhiqiang Tian
- Institute of Immunology, PLA, Third Military Medical University, Chongqing, China
| | - Bing Ni
- Department of Pathophysiology and High Altitude Pathology, Third Military Medical University, Chongqing, China
| | - Jun Tang
- Department of Dermatology, 105th Hospital of PLA, Hefei, China.,Graduate School, Bengbu Medical College, Bengbu, China
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145
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Abstract
It is estimated that more than 90% of the mammalian genome is transcribed as non-coding RNAs. Recent evidences have established that these non-coding transcripts are not junk or just transcriptional noise, but they do serve important biological purpose. One of the rapidly expanding fields of this class of transcripts is the regulatory lncRNAs, which had been a major challenge in terms of their molecular functions and mechanisms of action. The emergence of high-throughput technologies and the development in various conventional approaches have led to the expansion of the lncRNA world. The combination of multidisciplinary approaches has proven to be essential to unravel the complexity of their regulatory networks and helped establish the importance of their existence. Here, we review the current methodologies available for discovering and investigating functions of long non-coding RNAs (lncRNAs) and focus on the powerful technological advancement available to specifically address their functional importance.
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146
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Chen X, Yang C, Xie S, Cheung E. Long non-coding RNA GAS5 and ZFAS1 are prognostic markers involved in translation targeted by miR-940 in prostate cancer. Oncotarget 2018; 9:1048-1062. [PMID: 29416676 PMCID: PMC5787418 DOI: 10.18632/oncotarget.23254] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Accepted: 12/03/2017] [Indexed: 12/30/2022] Open
Abstract
Identification of prognostic biomarkers helps facilitate the prediction of patient outcomes as well as guide treatments. Accumulating evidence now suggests that long non-coding RNAs (lncRNAs) play key roles in tumor progression with diagnostic and prognostic values. However, little is known about the biological functions of lncRNAs and how they contribute to the pathogenesis of cancer. Herein, we performed weighted correlation network analysis (WGCNA) on 380 RNA-seq samples from prostate cancer patients to create networks comprising of microRNAs, lncRNAs, and protein-coding genes. Our analysis revealed expression modules that associated with pathological parameters. More importantly, we identified a gene module that is involved in protein translation and is associated with patient survival. In this gene module, we explored the regulation axis involving GAS5, ZFAS1, and miR-940. We show that GAS5, ZFAS1, and miR-940 are up-regulated in tumors relative to normal prostate tissues, and high expression of either lncRNA is an indicator of poor patient outcome. Finally, we constructed a co-expression network involving GAS5, ZFAS1, and miR-940, as well as the targets of miR-940. Our results show that GAS5 and ZFAS1 are targeted by miR-940 via NAA10 and RPL28. Taken together, co-expression analysis of gene expression profiling from RNA-seq can accelerate the identification and functional characterization of novel prognostic markers in prostate cancer.
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Affiliation(s)
- Xin Chen
- Guangdong Key Laboratory of IoT Information Technology, School of Automation, Guangdong University of Technology, Guangzhou, China
- Faculty of Health Sciences, University of Macau, Macau, China
| | - Chao Yang
- Guangdong Key Laboratory of IoT Information Technology, School of Automation, Guangdong University of Technology, Guangzhou, China
| | - Shengli Xie
- Guangdong Key Laboratory of IoT Information Technology, School of Automation, Guangdong University of Technology, Guangzhou, China
| | - Edwin Cheung
- Faculty of Health Sciences, University of Macau, Macau, China
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147
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Long FQ, Su QJ, Zhou JX, Wang DS, Li PX, Zeng CS, Cai Y. LncRNA SNHG12 ameliorates brain microvascular endothelial cell injury by targeting miR-199a. Neural Regen Res 2018; 13:1919-1926. [PMID: 30233065 PMCID: PMC6183049 DOI: 10.4103/1673-5374.238717] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Long non-coding RNAs regulate brain microvascular endothelial cell death, the inflammatory response and angiogenesis during and after ischemia/reperfusion and oxygen-glucose deprivation/reoxygenation (OGD/R) insults. The long non-coding RNA, SNHG12, is upregulated after ischemia/reperfusion and OGD/R in microvascular endothelial cells of the mouse brain. However, its role in ischemic stroke has not been studied. We hypothesized that SNHG12 positively regulates ischemic stroke, and therefore we investigated its mechanism of action. We established an OGD/R mouse cell model to mimic ischemic stroke by exposing brain microvascular endothelial cells to OGD for 0, 2, 4, 8, 16 or 24 hours and reoxygenation for 4 hours. Quantitative real-time polymerase chain reaction showed that SNHG12 levels in brain microvascular endothelial cells increased with respect to OGD exposure time. Brain microvascular endothelial cells were transfected with pcDNA-control, pcDNA-SNHG12, si-control, or si-SNHG12. After exposure to OGD for 16 hours, these cells were then analyzed by 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2-H-tetrazolium bromide, trypan blue exclusion, western blot, and capillary-like tube formation assays. Overexpression of SNHG12 inhibited brain microvascular endothelial cell death and the inflammatory response but promoted angiogenesis after OGD/R, while SNHG12 knockdown had the opposite effects. miR-199a was identified as a target of SNHG12, and SNHG12 overexpression reversed the effect of miR-199a on brain microvascular endothelial cell death, the inflammatory response, and angiogenesis. These findings suggest that SNHG12 suppresses endothelial cell injury induced by OGD/R by targeting miR-199a.
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Affiliation(s)
- Fa-Qing Long
- The Second Affiliated Hospital of Hainan Medical University, Haikou, Hainan Province, China
| | - Qing-Jie Su
- The Second Affiliated Hospital of Hainan Medical University, Haikou, Hainan Province, China
| | - Jing-Xia Zhou
- The Second Affiliated Hospital of Hainan Medical University, Haikou, Hainan Province, China
| | - De-Sheng Wang
- The Second Affiliated Hospital of Hainan Medical University, Haikou, Hainan Province, China
| | - Peng-Xiang Li
- The Second Affiliated Hospital of Hainan Medical University, Haikou, Hainan Province, China
| | - Chao-Sheng Zeng
- The Second Affiliated Hospital of Hainan Medical University, Haikou, Hainan Province, China
| | - Yi Cai
- The Second Affiliated Hospital of Hainan Medical University, Haikou, Hainan Province, China
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148
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Yan L, Wang S, Li Y, Tognetti L, Tan R, Zeng K, Pianigiani E, Mi X, Li H, Fimiani M, Rubegni P. SNHG5 promotes proliferation and induces apoptosis in melanoma by sponging miR-155. RSC Adv 2018; 8:6160-6168. [PMID: 35539582 PMCID: PMC9078272 DOI: 10.1039/c7ra12520h] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Accepted: 01/26/2018] [Indexed: 12/11/2022] Open
Abstract
Background: Melanoma is the most common malignancy of skin cancer. Small nucleolar RNA host gene 5 (SNHG5), a long non-coding RNA (lncRNA), has been demonstrated to be abnormally expressed in multiple malignances. However, the roles and molecular mechanisms of SNHG5 in melanoma progression have not been well identified. Methods: RT-qPCR assays were used to detect the expression patterns of SNHG5 and microRNA-155 (miR-155). Cell proliferation was assessed using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) and colony formation assays. Cell apoptosis rate was measured by flow cytometry via double-staining of fluorescein isothiocyanate (FITC)-labeled annexin V (Annexin V-FITC) and propidium iodide (PI). The interaction between SNHG5 and miR-155 was validated using bioinformatics analysis, subcellular fraction assay, luciferase assay and RNA immunoprecipitation (RIP) assay. A mouse model of melanoma was established to further verify the effect of SNHG5 on tumor growth in vivo. Results: SNHG5 expression was upregulated in melanoma tumor tissues and cell lines. Moreover, higher SNHG5 expression was associated with advanced pathogenic status and poor prognosis. Functional analysis showed that SNHG5 knockdown suppressed proliferation and facilitated apoptosis in melanoma cells. Mechanical exploration revealed that SNHG5 acted as a molecular sponge of miR-155 in melanoma cells. Restoration experiments delineated that miR-155 down-regulation partly abrogated SNHG5-knockdown-mediated anti-proliferation and pro-apoptosis effect in melanoma cells. In vivo assays further demonstrated that SNHG5 depletion hindered tumor growth through up-regulating miR-155 expression. Conclusion: SNHG5 promoted the development of melanoma by sponging miR-155 in vitro and in vivo, implying the important implication of lncRNAs in melanoma progression and providing a potential therapeutic target for melanoma. Melanoma is the most common malignancy of skin cancer. Small nucleolar RNA host gene 5 (SNHG5), a long non-coding RNA (lncRNA), has been demonstrated to be upregulated in tumor tissues and cells of melanoma.![]()
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149
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Zhang J, Zhang Z, Wang Z, Liu Y, Deng L. Ontological function annotation of long non-coding RNAs through hierarchical multi-label classification. Bioinformatics 2017; 34:1750-1757. [DOI: 10.1093/bioinformatics/btx833] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Accepted: 12/22/2017] [Indexed: 02/01/2023] Open
Affiliation(s)
- Jingpu Zhang
- School of Information Science and Engineering, Central South University, Changsha, China
- School of Computer (Software), Ping Ding Shan University, Pingdingshan, China
| | - Zuping Zhang
- School of Information Science and Engineering, Central South University, Changsha, China
| | - Zixiang Wang
- School of Software, Central South University, Changsha, China
| | - Yuting Liu
- School of Software, Central South University, Changsha, China
| | - Lei Deng
- School of Software, Central South University, Changsha, China
- Shanghai Key Laboratory of Intelligent Information Processing, Shanghai, China
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150
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Villamizar O, Chambers CB, Riberdy JM, Persons DA, Wilber A. Long noncoding RNA Saf and splicing factor 45 increase soluble Fas and resistance to apoptosis. Oncotarget 2017; 7:13810-26. [PMID: 26885613 PMCID: PMC4924680 DOI: 10.18632/oncotarget.7329] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Accepted: 01/29/2016] [Indexed: 12/21/2022] Open
Abstract
In multicellular organisms, cell growth and differentiation is controlled in part by programmed cell death or apoptosis. One major apoptotic pathway is triggered by Fas receptor (Fas)-Fas ligand (FasL) interaction. Neoplastic cells are frequently resistant to Fas-mediated apoptosis, evade Fas signals through down regulation of Fas and produce soluble Fas proteins that bind FasL thereby blocking apoptosis. Soluble Fas (sFas) is an alternative splice product of Fas pre-mRNA, commonly created by exclusion of transmembrane spanning sequences encoded within exon 6 (FasΔEx6). Long non-coding RNAs (lncRNAs) interact with other RNAs, DNA, and proteins to regulate gene expression. One lncRNA, Fas-antisense or Saf, was shown to participate in alternative splicing of Fas pre-mRNA through unknown mechanisms. We show that Saf is localized in the nucleus where it interacts with Fas receptor pre-mRNA and human splicing factor 45 (SPF45) to facilitate alternative splicing and exclusion of exon 6. The product is a soluble Fas protein that protects cells against FasL-induced apoptosis. Collectively, these studies reveal a novel mechanism to modulate this critical cell death program by an lncRNA and its protein partner.
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Affiliation(s)
- Olga Villamizar
- Department of Medical Microbiology, Immunology and Cell Biology, Southern Illinois University School of Medicine, Springfield, Illinois, USA.,Department of Microbiology, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Christopher B Chambers
- Department of Medical Microbiology, Immunology and Cell Biology, Southern Illinois University School of Medicine, Springfield, Illinois, USA
| | - Janice M Riberdy
- Department of Hematology, St. Jude Children's Research Hospital, Memphis, Tennessee, USA
| | - Derek A Persons
- Department of Hematology, St. Jude Children's Research Hospital, Memphis, Tennessee, USA
| | - Andrew Wilber
- Department of Medical Microbiology, Immunology and Cell Biology, Southern Illinois University School of Medicine, Springfield, Illinois, USA
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