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Farzaneh M, Najafi S, Anbiyaee O, Azizidoost S, Khoshnam SE. LncRNA MALAT1-related signaling pathways in osteosarcoma. CLINICAL & TRANSLATIONAL ONCOLOGY : OFFICIAL PUBLICATION OF THE FEDERATION OF SPANISH ONCOLOGY SOCIETIES AND OF THE NATIONAL CANCER INSTITUTE OF MEXICO 2023; 25:21-32. [PMID: 35790599 DOI: 10.1007/s12094-022-02876-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 06/10/2022] [Indexed: 01/07/2023]
Abstract
Osteosarcoma (OS) is a common and malignant form of bone cancer, which affects children and young adults. OS is identified by osteogenic differentiation and metastasis. However, the exact molecular mechanism of OS development and progression is still unclear. Recently, long non-coding RNAs (lncRNA) have been proven to regulate OS proliferation and drug resistance. LncRNAs are longer than 200 nucleotides that represent the extensive applications in the processing of pre-mRNA and the pathogenesis of human diseases. Metastasis-associated lung adenocarcinoma transcript-1 (MALAT1) is a well-known lncRNA known as a transcriptional and translational regulator. The aberrant expression of MALAT1 has been shown in several human cancers. The high level of MALAT1 is involved in OS cell growth and tumorigenicity by targeting several signaling pathways and miRNAs. Hence, MALAT1 might be a suitable approach for OS diagnosis and treatment. In this review, we will summarize the role of lncRNA MALAT1 in the pathophysiology of OS.
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Affiliation(s)
- Maryam Farzaneh
- Cellular and Molecular Research Center, Medical Basic Sciences Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Sajad Najafi
- Department of Medical Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Omid Anbiyaee
- School of Medicine, Cardiovascular Research Center, Nemazi Hospital, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Shirin Azizidoost
- Atherosclerosis Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
| | - Seyed Esmaeil Khoshnam
- Persian Gulf Physiology Research Center, Medical Basic Sciences Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
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Grand'Maison A, Kohrn R, Omole E, Shah M, Fiorica P, Sims J, Ohm JE. Genetic and environmental reprogramming of the sarcoma epigenome. ADVANCES IN PHARMACOLOGY (SAN DIEGO, CALIF.) 2023; 96:283-317. [PMID: 36858777 DOI: 10.1016/bs.apha.2022.10.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Sarcomas are rare and heterogenous mesenchymal tumors occurring in soft tissue and bone. The World Health Organization Classification of sarcomas comprises more than hundred different entities which are very diverse in their molecular, genetic and epigenetic signatures as they are in their clinical presentations and behaviors. While sarcomas can be associated with an underlying hereditary cancer predisposition, most sarcomas developed sporadically without identifiable cause. Sarcoma oncogenesis involves complex interactions between genetic, epigenetic and environmental factors which are intimately related and intensively studied. Several molecular discoveries have been made over the last decades leading to the development of new therapeutic avenues. Sarcoma research continues its effort toward a more specific and personalized approach to all sarcoma sub-types to improve patient outcomes and this through world-wide collaboration. This chapter on "Genetic and Environmental Reprogramming of the Sarcoma Epigenome" provides a comprehensive review of general concepts and epidemiology of sarcoma as well as a detailed description of the genetic, molecular and epigenetic alterations seen in sarcomas, their therapeutic implications and ongoing research. This review also presents evidenced-based data on the environmental and occupational factors possibly involved in the etiology of sarcomas and a brief discussion on the role of the microbiome in sarcoma.
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Affiliation(s)
- Anne Grand'Maison
- Department of Cancer Genetics and Genomics, Roswell Park Comprehensive Cancer Center, Buffalo, NY, United States
| | - Rachael Kohrn
- Department of Cancer Genetics and Genomics, Roswell Park Comprehensive Cancer Center, Buffalo, NY, United States
| | - Emmanuel Omole
- Department of Cancer Genetics and Genomics, Roswell Park Comprehensive Cancer Center, Buffalo, NY, United States
| | - Mahek Shah
- Department of Cancer Genetics and Genomics, Roswell Park Comprehensive Cancer Center, Buffalo, NY, United States
| | - Peter Fiorica
- Department of Cancer Genetics and Genomics, Roswell Park Comprehensive Cancer Center, Buffalo, NY, United States
| | - Jennie Sims
- Department of Cancer Genetics and Genomics, Roswell Park Comprehensive Cancer Center, Buffalo, NY, United States
| | - Joyce E Ohm
- Department of Cancer Genetics and Genomics, Roswell Park Comprehensive Cancer Center, Buffalo, NY, United States.
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Liu B, Pang K, Feng C, Liu Z, Li C, Zhang H, Liu P, Li Z, He S, Tu C. Comprehensive analysis of a novel cuproptosis-related lncRNA signature associated with prognosis and tumor matrix features to predict immunotherapy in soft tissue carcinoma. Front Genet 2022; 13:1063057. [PMID: 36568384 PMCID: PMC9768346 DOI: 10.3389/fgene.2022.1063057] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Accepted: 11/24/2022] [Indexed: 12/12/2022] Open
Abstract
Background: A crucial part of the malignant processes of soft tissue sarcoma (STS) is played by cuproptosis and lncRNAs. However, the connection between cuproptosis-related lncRNAs (CRLs) and STS is nevertheless unclear. As a result, our objective was to look into the immunological activity, clinical significance, and predictive accuracy of CRLs in STS. Methods: The Cancer Genome Atlas (TCGA) and Genotype-Tissue Expression (GTEx) databases, respectively, provided information on the expression patterns of STS patients and the general population. Cuproptosis-related lncRNA signature (CRLncSig) construction involved the univariate, multivariate, and least absolute shrinkage and selection operator Cox regression analysis. The predictive performance of the CRLncSig was evaluated using a serial analysis. Further research was done on the connections between the CRLncSig and the tumor immune milieu, somatic mutation, immunotherapy response, and chemotherapeutic drug susceptibility. Notably, an in vitro investigation served to finally validate the expression of the hallmark CRLs. Results: A novel efficient CRLncSig composed of seven CRLs was successfully constructed. Additionally, the low-CRLncSig group's prognosis was better than that of the high-CRLncSig group's based on the new CRLncSig. The innovative CRLncSig then demonstrated outstanding, consistent, and independent prognostic and predictive usefulness for patients with STS, according to the evaluation and validation data. The low-CRLncSig group's patients also displayed improved immunoreactivity phenotype, increased immune infiltration abundance and checkpoint expression, and superior immunotherapy response, whereas those in the high-CRLncSig group with worse immune status, increased tumor stemness, and higher collagen levels in the extracellular matrix. Additionally, there is a noticeable disparity in the sensitivity of widely used anti-cancer drugs amongst various populations. What's more, the nomogram constructed based on CRLncSig and clinical characteristics of patients also showed good predictive ability. Importantly, Real-Time Quantitative Polymerase Chain Reaction (RT-qPCR) demonstrated that the signature CRLs exhibited a significantly differential expression level in STS cell lines. Conclusion: In summary, this study revealed the novel CRLncSig could be used as a promising predictor for prognosis prediction, immune activity, tumor immune microenvironment, immune response, and chemotherapeutic drug susceptibility in patients with STS. This may provide an important direction for the clinical decision-making and personalized therapy of STS.
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Affiliation(s)
- Binfeng Liu
- Department of Orthopaedics, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China,Hunan Key Laboratory of Tumor Models and Individualized Medicine, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Ke Pang
- Department of Orthopaedics, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China,Hunan Key Laboratory of Tumor Models and Individualized Medicine, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Chengyao Feng
- Department of Orthopaedics, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China,Hunan Key Laboratory of Tumor Models and Individualized Medicine, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Zhongyue Liu
- Department of Orthopaedics, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China,Hunan Key Laboratory of Tumor Models and Individualized Medicine, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Chenbei Li
- Department of Orthopaedics, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China,Hunan Key Laboratory of Tumor Models and Individualized Medicine, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Haixia Zhang
- Department of Oncology, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Ping Liu
- Department of Oncology, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Zhihong Li
- Department of Orthopaedics, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China,Hunan Key Laboratory of Tumor Models and Individualized Medicine, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Shasha He
- Department of Oncology, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China,*Correspondence: Shasha He, ; Chao Tu,
| | - Chao Tu
- Department of Orthopaedics, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China,Hunan Key Laboratory of Tumor Models and Individualized Medicine, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China,*Correspondence: Shasha He, ; Chao Tu,
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Kanojia D, Kirtonia A, Srujana NSV, Jeevanandan SP, Shyamsunder P, Sampath SS, Dakle P, Mayakonda A, Kaur H, Yanyi J, Koeffler HP, Garg M. Transcriptome analysis identifies TODL as a novel lncRNA associated with proliferation, differentiation, and tumorigenesis in liposarcoma through FOXM1 Running Title: TODL lncRNA as a potential therapeutic target for liposarcoma. Pharmacol Res 2022; 185:106462. [PMID: 36167276 DOI: 10.1016/j.phrs.2022.106462] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 09/14/2022] [Accepted: 09/19/2022] [Indexed: 11/15/2022]
Abstract
Liposarcoma, the most common soft tissue sarcoma, is a group of fat cell mesenchymal tumors with different histological subtypes. The dysregulation of long non-coding RNAs (lncRNAs) has been observed in human cancers including a few studies in sarcoma. However, the global transcriptome analysis and potential role of lncRNAs remain unexplored in liposarcoma. The present investigation uncovers the transcriptomic profile of liposarcoma by RNA sequencing to gain insight into the global transcriptional changes in liposarcoma. Our RNA sequencing analysis has identified that many oncogenic lncRNAs are differentially expressed in different subtypes of liposarcoma including MALAT1, PVT1, SNHG15, LINC00152, and MIR210HG. Importantly, we identified a highly overexpressed, unannotated, and novel lncRNA in dedifferentiated liposarcomas. We have named it TODL, transcript overexpressed in dedifferentiated liposarcoma. TODL lncRNA displayed significantly higher expression in dedifferentiated liposarcoma cell lines and patient samples. Interestingly, functional studies revealed that TODL lncRNA has an oncogenic function in liposarcoma cells by regulating proliferation, cell cycle, apoptosis, differentiation, and tumorigenesis in the murine model. Silencing of TODL lncRNA highlighted the enrichment of several key oncogenic signaling pathways including cell cycle, transcriptional misregulation, FOXM1 network, p53 signaling, PLK1 signaling, FoxO, and signaling Aurora signaling pathways. RNA pull-down assay revealed the binding of TODL lncRNA with FOXM1, an oncogenic transcription factor, and the key regulator of the cell cycle. Silencing of TODL lncRNA also induces adipogenesis in dedifferentiated liposarcomas. Altogether, our finding indicates that TODL could be utilized as a novel, specific diagnostic biomarker, and a pharmacological target for therapeutic development in controlling aggressive and metastatic dedifferentiated liposarcomas.
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Affiliation(s)
- Deepika Kanojia
- Cancer Science Institute of Singapore, National University of Singapore, 117599, Singapore.
| | - Anuradha Kirtonia
- Amity Institute of Molecular Medicine & Stem Cell Research (AIMMSCR), Amity University, Sector-125, Noida, Uttar Pradesh, 201313, India
| | | | | | - Pavithra Shyamsunder
- Cancer Science Institute of Singapore, National University of Singapore, 117599, Singapore
| | | | - Pushkar Dakle
- Cancer Science Institute of Singapore, National University of Singapore, 117599, Singapore
| | - Anand Mayakonda
- Cancer Science Institute of Singapore, National University of Singapore, 117599, Singapore; Division of Cancer Epigenomics, German Cancer Research Center (DKFZ), Heidelberg, 69120, Germany
| | - Harvinder Kaur
- Cancer Science Institute of Singapore, National University of Singapore, 117599, Singapore
| | - Jiang Yanyi
- Cancer Science Institute of Singapore, National University of Singapore, 117599, Singapore
| | - H Phillip Koeffler
- Cancer Science Institute of Singapore, National University of Singapore, 117599, Singapore; Division of Hematology/Oncology, Cedars-Sinai Medical Center, University of California, School of Medicine, Los Angeles, California, 90048, USA
| | - Manoj Garg
- Amity Institute of Molecular Medicine & Stem Cell Research (AIMMSCR), Amity University, Sector-125, Noida, Uttar Pradesh, 201313, India.
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Shi D, Mu S, Pu F, Zhong B, Hu B, Muhtar M, Tong W, Shao Z, Zhang Z, Liu J. Pan-sarcoma characterization of lncRNAs in the crosstalk of EMT and tumour immunity identifies distinct clinical outcomes and potential implications for immunotherapy. Cell Mol Life Sci 2022; 79:427. [PMID: 35842562 PMCID: PMC11071722 DOI: 10.1007/s00018-022-04462-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Revised: 06/16/2022] [Accepted: 07/01/2022] [Indexed: 11/29/2022]
Abstract
The epithelial-to-mesenchymal transition (EMT) is a reversible process that may interact with tumour immunity through multiple approaches. There is increasing evidence demonstrating the interconnections among EMT-related processes, the tumour microenvironment, and immune activity, as well as its potential influence on the immunotherapy response. Long non-coding RNAs (lncRNAs) are emerging as critical modulators of gene expression. They play fundamental roles in tumour immunity and act as promising biomarkers of immunotherapy response. However, the potential roles of lncRNA in the crosstalk of EMT and tumour immunity are still unclear in sarcoma. We obtained multi-omics profiling of 1440 pan-sarcoma patients from 19 datasets. Through an unsupervised consensus clustering approach, we categorised EMT molecular subtypes. We subsequently identified 26 EMT molecular subtype and tumour immune-related lncRNAs (EILncRNA) across pan-sarcoma types and developed an EILncRNA signature-based weighted scoring model (EILncSig). The EILncSig exhibited favourable performance in predicting the prognosis of sarcoma, and a high-EILncSig was associated with exclusive tumour microenvironment (TME) characteristics with desert-like infiltration of immune cells. Multiple altered pathways, somatically-mutated genes and recurrent CNV regions associated with EILncSig were identified. Notably, the EILncSig was associated with the efficacy of immune checkpoint inhibition (ICI) therapy. Using a computational drug-genomic approach, we identified compounds, such as Irinotecan that may have the potential to convert the EILncSig phenotype. By integrative analysis on multi-omics profiling, our findings provide a comprehensive resource for understanding the functional role of lncRNA-mediated immune regulation in sarcomas, which may advance the understanding of tumour immune response and the development of lncRNA-based immunotherapeutic strategies for sarcoma.
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Affiliation(s)
- Deyao Shi
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
| | - Shidai Mu
- Institute of Haematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Feifei Pu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Binlong Zhong
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Binwu Hu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Muradil Muhtar
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Wei Tong
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Zengwu Shao
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Zhicai Zhang
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
| | - Jianxiang Liu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
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Du H, Zhang H, Yang R, Qiao L, Shao H, Zhang X. Small interfering RNA-induced silencing lncRNA PVT1 inhibits atherosclerosis via inactivating the MAPK/NF-κB pathway. Aging (Albany NY) 2021; 13:24449-24463. [PMID: 34775377 PMCID: PMC8610127 DOI: 10.18632/aging.203696] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 10/25/2021] [Indexed: 12/20/2022]
Abstract
Atherosclerosis (AS) is a chronic disease of the arterial wall. The role of lncRNAs in AS has been acknowledged. This study investigated the role of lncRNA plasmacytoma variant translocation 1 (PVT1) in AS via the MAPK/NF-κB pathway. Serum samples were collected from AS and non-AS patients. Serum levels of PVT1, CRP, IL-6, IL-1β, and TNF-α were determined. AS mouse model was established and transfected with si-PVT1. Levels of TG, TC, HDL, LDL, MAPK, NF-κB, MMP-2, MMP-9, TIMP-1, and macrophage content were detected. Human arterial vascular smooth muscle cells (HA-VSMCs) induced by 50 mg/mL oxLDL were transfected with si-PVT1 or oe-PVT1 and added with MAPK inhibitor U0126. Viability, apoptosis, cell cycle, colony formation and DNA replication were assessed. Levels of apoptosis-related proteins were detected. Consequently, PVT1 was highly expressed in AS patients. Silencing PVT1 decreased levels of TG, TC, LDL, IL-6, IL-1β, TNF-α, MMP-2, MMP-9, CRP, TIMP-1, MAPK, and NF-κB, increased HDL, reduced atherosclerotic plaques and macrophage content in mice, inhibited viability, clones and EdU positive rates in HA-VSMCs, but promoted apoptosis and cell cycle arrest. Inhibition of MAPK/NF-κB pathway suppressed proliferation and promoted apoptosis of HA-VSMCs while PVT1 overexpression facilitated AS development. Briefly, silencing PVT1 inhibited AS development by downregulating MAPK/NF-κB pathway.
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Affiliation(s)
- Hong Du
- Department of Cardiology, Second Hospital of Hebei Medical University, Shijiazhaung 050000, Hebei, P.R. China
| | - Hui Zhang
- Department of Cardiology, Second Hospital of Hebei Medical University, Shijiazhaung 050000, Hebei, P.R. China
| | - Rong Yang
- Department of Cardiology, Second Hospital of Hebei Medical University, Shijiazhaung 050000, Hebei, P.R. China
| | - Li Qiao
- Department of Cardiology, Second Hospital of Hebei Medical University, Shijiazhaung 050000, Hebei, P.R. China
| | - Huiyu Shao
- Department of Cardiology, Second Hospital of Hebei Medical University, Shijiazhaung 050000, Hebei, P.R. China
| | - Xiaolin Zhang
- Department of Cardiology, Second Hospital of Hebei Medical University, Shijiazhaung 050000, Hebei, P.R. China
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Liu X, Niu N, Li P, Zhai L, Xiao K, Chen W, Zhuang X. LncRNA OGFRP1 acts as an oncogene in NSCLC via miR-4640-5p/eIF5A axis. Cancer Cell Int 2021; 21:425. [PMID: 34389018 PMCID: PMC8361654 DOI: 10.1186/s12935-021-02115-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Accepted: 07/25/2021] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Long noncoding RNAs (lncRNAs) OGFRP1 is up-regulated in endometrial cancer and cervical carcinoma, and OGFRP1 suppression inhibits the malignant behavior of cancer cells. Here, we evaluated the expression pattern, biological function and potential mechanism of OGFRP1 in non-small cell lung cancer (NSCLC). METHODS The expression of target genes in 25 pairs of clinically collected NSCLC and normal lung tissue samples was detected by qRT-PCR or western blot. We screened the siRNA (siOGFRP1) to down-regulate the expression of OGFRP1 in A549 and H1299 cells. The biological function of A549 and H1299 cells were examined by CCK8, wound healing and transwell assays. The molecular mechanism of OGFRP1 was further explored. RESULTS The expression of OGFRP1 in NSCLC tissues were higher than that in normal lung tissue. siOGFRP1 inhibited the proliferation, migration and invasion of A549 and H1299 cells. In addition, the expression of EMT-related and apoptosis-related proteins was changed by siOGFRP1 transfection. OGFRP1 can directly interact with miR-4640-5p, and siOGFRP1 increased the level of miR-4640-5p. Moreover, miR-4640-5p could directly bind to the 3' UTR region of eIF5A mRNA. eIF5A was highly expressed in NSCLC tissues, and predicted a poor prognosis. In addition, the expression of miR-4640-5p and eIF5A in NSCLC tissues were negatively correlated, while the expression of OGFRP1 and eIF5A were positively correlated. Knockdown of OGFRP1 inhibited the expression of eIF5A, while transfection of miR-4640-5p inhibitor up-regulated the expression of eIF5A. CONCLUSIONS Taken together, we demonstrated that down-regulation of OGFRP1 inhibited the progression of NSCLC through miR-4640-5p/eIF5A axis.
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Affiliation(s)
- Xiaojing Liu
- Department of Clinical Laboratory Medicine, Shandong University Qilu Hospital, Jinan, 250012, China
| | - Na Niu
- Department of Pediatrics, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, 250021, Shandong, China
| | - Pibao Li
- Intensive Care Unit, The Third Hospital of Shandong Province Affiliated To Shandong University, Jinan, 250041, China
| | - Liping Zhai
- Shandong Province Endemic Disease Control Institute, Jinan, 250014, China
| | - Ke Xiao
- Department of Clinical Laboratory Medicine, Shandong University Qilu Hospital, Jinan, 250012, China
| | - Wendan Chen
- Department of Clinical Laboratory Medicine, Shandong University Qilu Hospital, Jinan, 250012, China
| | - Xuewei Zhuang
- Department of Clinical Laboratory Medicine, The Third Hospital of Shandong Province Affiliated To Shandong University, #12 Wuying Shan Zhong Road, Tianqiao District, Jinan, 250041, China.
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Cheng R, Zhang G, Bai Y, Zhang F, Zhang G. LncRNA SENCR promotes cell proliferation and progression in non-small-cell lung cancer cells via sponging miR-1-3p. Cell Cycle 2021; 20:1402-1414. [PMID: 34224326 PMCID: PMC8344740 DOI: 10.1080/15384101.2021.1924958] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Revised: 04/18/2021] [Accepted: 04/28/2021] [Indexed: 12/27/2022] Open
Abstract
ABBREVIATION NSCLC: Non-small cell lung cancer.
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Affiliation(s)
- Ruirui Cheng
- Department of Respiratory, The First Affiliated Hospital of Zhengzhou University, ZhengzhouChina
| | - Guowei Zhang
- Department of Internal Medicine, The Affiliated Cancer Hospital of Zhengzhou University, ZhengzhouChina
| | - Yong Bai
- Department of Respiratory, The First Affiliated Hospital of Zhengzhou University, ZhengzhouChina
| | - Furui Zhang
- Department of Respiratory, The First Affiliated Hospital of Zhengzhou University, ZhengzhouChina
| | - Guojun Zhang
- Department of Respiratory, The First Affiliated Hospital of Zhengzhou University, ZhengzhouChina
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Qiao L, Peng SY, Zhou YP, Yin J, Xu JP, Chen B, Zhang H, Zhu C, Yu XD. Long non-coding RNA RP11-81H3.2 suppresses apoptosis by targeting microRNA-1539/COL2A1 in human nucleus pulposus cells. Exp Ther Med 2021; 22:884. [PMID: 34194562 PMCID: PMC8237274 DOI: 10.3892/etm.2021.10316] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Accepted: 10/06/2020] [Indexed: 12/21/2022] Open
Abstract
Intervertebral disk degeneration (IDD) is a severe health problem that results in lower back pain and disability. Previous evidence has indicated that excessive apoptosis of nucleus pulposus (NP) cell is involved in the occurrence and development of IDD. However, the underlying mechanisms regulating NP cell apoptosis are unclear. The present study aimed to investigate the function of a novel long non-coding RNA RP11-81H3.2 in modulating NP cell apoptosis and the potential underlying mechanisms. The results demonstrated that the RP11-81H3.2 expression levels were significantly decreased in NP tissues from patients with IDD compared with those from healthy controls, and that lower expression levels were associated with higher-grade disk degeneration. Functionally, RP11-81H3.2 silencing promoted apoptosis and decreased the viability of NP cells derived from tissue samples of patients with IDD, whereas RP11-81H3.2 overexpression induced opposite effects. Bioinformatics analysis, luciferase assays and reverse transcription-quantitative PCR revealed that microRNA (miR)-1539 was a direct target of RP11-81H3.2. A mechanistic analysis demonstrated that RP11-81H3.2 functioned as an RNA sink to downregulate miR-1539, which led to the upregulation of collagen type 2 α 1 chain (COL2A1), a target of miR-1539. Collectively, the present results suggested that lower RP11-81H3.2 expression levels were associated with higher-grade IDD, and that RP11-81H3.2 inhibited NP cell apoptosis by decreasing the levels of miR-1539 to increase COL2A1 expression levels. The present study identified a beneficial role of RP11-81H3.2 against NP cell apoptosis.
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Affiliation(s)
- Lin Qiao
- Department of Orthopaedics, 987 Hospital of Peoples Liberation Army of China Joint Logistics Support Force, Baoji, Shaanxi 721004, P.R. China
| | - Shi-Yuan Peng
- Department of Orthopaedics, 987 Hospital of Peoples Liberation Army of China Joint Logistics Support Force, Baoji, Shaanxi 721004, P.R. China
| | - Yu-Ping Zhou
- Department of Orthopaedics, 987 Hospital of Peoples Liberation Army of China Joint Logistics Support Force, Baoji, Shaanxi 721004, P.R. China
| | - Jie Yin
- Department of Orthopaedics, 987 Hospital of Peoples Liberation Army of China Joint Logistics Support Force, Baoji, Shaanxi 721004, P.R. China
| | - Jun-Peng Xu
- Department of Orthopaedics, 987 Hospital of Peoples Liberation Army of China Joint Logistics Support Force, Baoji, Shaanxi 721004, P.R. China
| | - Bo Chen
- Department of Orthopaedics, 987 Hospital of Peoples Liberation Army of China Joint Logistics Support Force, Baoji, Shaanxi 721004, P.R. China
| | - Huan Zhang
- Department of Orthopaedics, 987 Hospital of Peoples Liberation Army of China Joint Logistics Support Force, Baoji, Shaanxi 721004, P.R. China
| | - Chao Zhu
- Department of Orthopaedics, 987 Hospital of Peoples Liberation Army of China Joint Logistics Support Force, Baoji, Shaanxi 721004, P.R. China
| | - Xiao-Dong Yu
- Department of Orthopaedics, 987 Hospital of Peoples Liberation Army of China Joint Logistics Support Force, Baoji, Shaanxi 721004, P.R. China
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Zhang J, Xu X, Yin J, Tang J, Hu N, Hong Y, Song Z, Bian B, Wu F. lncRNA OGFRP1 promotes tumor progression by activating the AKT/mTOR pathway in human gastric cancer. Aging (Albany NY) 2021; 13:9766-9779. [PMID: 33744848 PMCID: PMC8064230 DOI: 10.18632/aging.202731] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Accepted: 10/20/2020] [Indexed: 12/14/2022]
Abstract
As biomolecules of great clinical value, lncRNAs play a crucial role as regulators in the processes of tumor origin, metastasis, and recurrence. Thus, lncRNAs are urgently needed for research in gastric cancer. We elucidated the specific function of OGFRP1, both in vitro and in vivo. OGFRP1 was expressed at abnormally high levels in gastric cancer samples (n = 408) compared to normal samples (n = 211). Similar results were obtained in 30 clinical case samples. Interference of OGFRP1 markedly blocked cell proliferation and migration, and it induced cell cycle arrest and the apoptosis of gastric cancer cells in vitro. Phosphorylation of AKT was inhibited in cells transfected with OGFRP1 siRNA, as compared to their control cells. The in vivo results further confirmed the antitumor effects of OGFRP1 knockdown on gastric cancer. Decreases in tumor volume (104.23±62.27 mm3) and weight (0.1006±0.0488 g) in nude mice were observed during the OGFRP1 interference, as compared with the control group (418.96±211.96 mm3 and 0.2741±0.0769 g). OGFRP1 promotes tumor progression through activating the AKT/mTOR pathway. Our findings provide a new potential target for the clinical treatment of human gastric cancer.
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Affiliation(s)
- Jingzhou Zhang
- Department of Oncology, Lianyungang Clinical College of Nanjing Medical University, The First People's Hospital of Lianyungang, Lianyungang, China
| | - Xiujuan Xu
- Department of Radiation Oncology, Lianyungang Second People's Hospital, Lianyungang, China
| | - Junfeng Yin
- Department of General Surgery, The Affiliated Hospital of Yangzhou University, Yangzhou University, Yangzhou, China
| | - Jiaqi Tang
- Department of Oncology, Lianyungang Clinical College of Nanjing Medical University, The First People's Hospital of Lianyungang, Lianyungang, China
| | - Nan Hu
- Department of Oncology, Lianyungang Clinical College of Nanjing Medical University, The First People's Hospital of Lianyungang, Lianyungang, China
| | - Yidong Hong
- Deparment of Oncology, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Ziyan Song
- Department of Oncology, Lianyungang Clinical College of Nanjing Medical University, The First People's Hospital of Lianyungang, Lianyungang, China
| | - Baoxiang Bian
- Department of Oncology, Lianyungang Clinical College of Nanjing Medical University, The First People's Hospital of Lianyungang, Lianyungang, China
| | - Fenglei Wu
- Department of Oncology, Lianyungang Clinical College of Nanjing Medical University, The First People's Hospital of Lianyungang, Lianyungang, China
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11
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Jiang L, Wan Y, Feng Z, Liu D, Ouyang L, Li Y, Liu K. Long Noncoding RNA UCA1 Is Related to Autophagy and Apoptosis in Endometrial Stromal Cells. Front Oncol 2021; 10:618472. [PMID: 33680939 PMCID: PMC7931686 DOI: 10.3389/fonc.2020.618472] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Accepted: 12/29/2020] [Indexed: 11/22/2022] Open
Abstract
Research Question The expression of the long noncoding RNA (lncRNA) urothelial carcinoma-associated 1 (UCA1) in embryonic tissues is higher than that in most cancer tissues, such as bladder cancer, indicating that RNA is a carcinoembryonic antigen. However, there are no published reports on the role of UCA1 in endometriosis (EMS). Therefore, to address this gap in knowledge, we assessed the potential role of lncRNA UCA1 in the pathogenesis and progression of EMS. Design To verify the expression of UCA1 in EMS, quantitative reverse transcription polymerase chain reaction (qRT-PCR) was used. RNA interference (siRNA) was used to study the biological function of UCA1 in EMS in vitro. Results qRT-PCR analysis showed that the expression of lncRNA UCA1 in EMS was increased (P<0.01). Knockdown of UCA1 in vitro significantly inhibited the proliferation of endometrial stromal cells (ESCs) and induced autophagy and apoptosis. Conclusion UCA1 is highly expressed in EMS and promotes the proliferation of ESCs but suppresses autophagy and apoptosis. In EMS, UCA1 may be a prognostic marker and therapeutic target.
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Affiliation(s)
- Lili Jiang
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Yahui Wan
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Ziyi Feng
- College of Clinical Medicine Science, China Medical University, Shenyang, China
| | - Da Liu
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Ling Ouyang
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Yan Li
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Kuiran Liu
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, China
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12
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Shen R, Liu B, Li X, Yu T, Xu K, Ma J. Development and validation of an immune gene-set based prognostic signature for soft tissue sarcoma. BMC Cancer 2021; 21:144. [PMID: 33557781 PMCID: PMC7871579 DOI: 10.1186/s12885-021-07852-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Accepted: 01/27/2021] [Indexed: 12/12/2022] Open
Abstract
Background Sarcomas is a group of heterogeneous malignant tumors originated from mesenchymal tissue and different types of sarcomas have disparate outcomes. The present study aims to identify the prognostic value of immune-related genes (IRGs) in sarcoma and establish a prognostic signature based on IRGs. Methods We collected the expression profile and clinical information of 255 soft tissue sarcoma samples from The Cancer Genome Atlas (TCGA) database and 2498 IRGs from the ImmPort database. The LASSO algorithm and Cox regression analysis were used to identify the best candidate genes and construct a signature. The prognostic ability of the signature was evaluated by ROC curves and Kaplan-Meier survival curves and validated in an independent cohort. Besides, a nomogram based on the IRGs and independent prognostic clinical variables was developed. Results A total of 19 IRGs were incorporated into the signature. In the training cohort, the AUC values of signature at 1-, 2-, and 3-years were 0.938, 0.937 and 0.935, respectively. The Kaplan-Meier survival curve indicated that high-risk patients were significantly worse prognosis (P < 0.001). In the validation cohort, the AUC values of signature at 1-, 2-, and 3-years were 0.730, 0.717 and 0.647, respectively. The Kaplan-Meier survival curve also showed significant distinct survival outcome between two risk groups. Furthermore, a nomogram based on the signature and four prognostic variables showed great accuracy in whole sarcoma patients and subgroup analyses. More importantly, the results of the TF regulatory network and immune infiltration analysis revealed the potential molecular mechanism of IRGs. Conclusions In general, we identified and validated an IRG-based signature, which can be used as an independent prognostic signature in evaluating the prognosis of sarcoma patients and provide potential novel immunotherapy targets. Supplementary Information The online version contains supplementary material available at 10.1186/s12885-021-07852-2.
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Affiliation(s)
- Rui Shen
- Department of Spinal Surgery, the Affiliated Hospital of Qingdao University, Qingdao, 266000, China
| | - Bo Liu
- Department of Spinal Surgery, the Affiliated Hospital of Qingdao University, Qingdao, 266000, China
| | - Xuesen Li
- Department of Spinal Surgery, the Affiliated Hospital of Qingdao University, Qingdao, 266000, China
| | - Tengbo Yu
- Department of Sport Medicine, The Affiliated Hospital of Qingdao University, Qingdao, 266000, China
| | - Kuishuai Xu
- Department of Sport Medicine, The Affiliated Hospital of Qingdao University, Qingdao, 266000, China
| | - Jinfeng Ma
- Department of Spinal Surgery, the Affiliated Hospital of Qingdao University, Qingdao, 266000, China.
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13
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Hu C, Chen B, Huang Z, Liu C, Ye L, Wang C, Tong Y, Yang J, Zhao C. Comprehensive profiling of immune-related genes in soft tissue sarcoma patients. J Transl Med 2020; 18:337. [PMID: 32873319 PMCID: PMC7465445 DOI: 10.1186/s12967-020-02512-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Accepted: 08/27/2020] [Indexed: 02/08/2023] Open
Abstract
Background Immune-related genes (IRGs) have been confirmed to have an important role in tumorigenesis and tumor microenvironment formation. Nevertheless, a systematic analysis of IRGs and their clinical significance in soft tissue sarcoma (STS) patients is lacking. Methods Gene expression files from The Cancer Genome Atlas (TCGA) database and Genotype-Tissue Expression (GTEx) were used to select differentially expressed genes (DEGs). Differentially expressed immune-related genes (DEIRGs) were determined by matching the DEG and ImmPort gene sets, which were evaluated by functional enrichment analysis. Unsupervised clustering of the identified DEIRGs was conducted, and associations with prognosis, the tumor microenvironment (TME), immune checkpoints, and immune cells were analyzed simultaneously. Two prognostic signatures, one for overall survival (OS) and one for progression free survival (PFS), were established and validated in an independent set. Finally, two transcription factor (TF)-IRG regulatory networks were constructed, and a crucial regulatory axis was validated. Results In total, 364 DEIRGs and four clusters were identified. OS, TME scores, five immune checkpoints, and 12 types of immune cells were found to be significantly different among the four clusters. The two prognostic signatures incorporating 20 DEIRGs showed favorable discrimination and were successfully validated. Two nomograms combining signature and clinical variables were generated. The C-indexes were 0.879 (95%CI 0.832 ~ 0.926) and 0.825 (95%CI 0.776 ~ 0.874) for the OS and PFS signatures, respectively. Finally, TF-IRG regulatory networks were established, and the MYH11-ADM regulatory axis was verified in three independent datasets. Conclusion This comprehensive analysis of the IRG landscape in soft tissue sarcoma revealed novel IRGs related to carcinogenesis and the immune microenvironment. These findings have implications for prognosis and therapeutic responses, which reveal novel potential prognostic biomarkers, promote precision medicine, and provide potential novel targets for immunotherapy.
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Affiliation(s)
- Chuan Hu
- Department of Orthopedic, Affiliated Hospital of Chengde Medical University, Hebei, China.,Qingdao University Medical College, Shandong, 266071, China
| | - Bo Chen
- Department of Orthopedic, Affiliated Hospital of Chengde Medical University, Hebei, China.,Wenzhou Medical University, Zhejiang, 325000, China
| | - Zhangheng Huang
- Department of Orthopedic, Affiliated Hospital of Chengde Medical University, Hebei, China
| | - Chuan Liu
- Department of Medical Oncology, The First Hospital of China Medical University, Shenyang, 110001, China
| | - Lin Ye
- Wenzhou Medical University, Zhejiang, 325000, China
| | - Cailin Wang
- Wenzhou Medical University, Zhejiang, 325000, China
| | - Yuexin Tong
- Department of Orthopedic, Affiliated Hospital of Chengde Medical University, Hebei, China
| | - Jiaxin Yang
- Wenzhou Medical University, Zhejiang, 325000, China
| | - Chengliang Zhao
- Department of Orthopedic, Affiliated Hospital of Chengde Medical University, Hebei, China.
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14
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Wang K, Ye X, Yang C, Chen G, Yao N, Kang Z, Shi W. Comprehensive Analysis of Novel lncRNA-TF Regulatory Cross Talks and Identification of Core lncRNA-TF Feedback Loops in Sarcoma. DNA Cell Biol 2020; 39:1558-1572. [PMID: 32845706 DOI: 10.1089/dna.2020.5385] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Sarcomas are a broad family of cancers that arise from cells of mesenchymal origin in virtually every tissue of the body. Some transcription factors (TFs) have been reported to be involved in the pathogenesis and metastasis of sarcomas. The expression of certain long noncoding RNAs (lncRNAs) has been correlated with the degree of cancer prognosis. There is an urgent need to effectively integrate TFs and lncRNA/microRNA/mRNA regulatory axis and further identify more key regulators that play crucial roles in sarcomas. We performed a network-based computational analysis to investigate the lncRNA-TF cross talks via integrating lncRNA-TF ceRNA interactions and TF-TF protein-protein interactions. Multiple topology analyses were performed to the sarcomas-related global lncRNA-TF network. Several lncRNAs or TFs with central topology structures were identified as key regulators and used to locate a hub-associated lncRNA-TF subnetwork. Three functional modules were identified from the sarcomas-related global lncRNA-TF network, which have shown significant pathway enrichment and prognosis capability. The lncRNAs and TFs of these modules were shown to participate in sarcoma-related biological phenomena through involving in mitogen-activated protein kinases (MAPK), Jak-STAT, and transforming growth factor (TGF-beta) signaling pathways. More importantly, a subset of core lncRNA-TF cross talks that might form positive feedback loops to control biological processes of sarcomas was identified. These core lncRNA-TF positive feedback loops showed more TF binding affinity than other lncRNAs. All the results can help us uncover the molecular mechanism of sarcomas and provide a novel way for diagnosis biomarker and therapeutic target identification.
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Affiliation(s)
- Ke Wang
- Department of Orthopedics, Daqing No. 4 Hospital, Daqing, China
| | - Xiangling Ye
- The Fifth Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China.,Department of Orthopedics, Guangdong Second Traditional Chinese Medicine Hospital, Guangzhou, China
| | - Chengshan Yang
- Department of PT2, Beijing Rehabilitation Hospital of Capital Medical University, Beijing, China
| | - Guocai Chen
- The Fifth Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China.,Department of Orthopedics, Guangdong Second Traditional Chinese Medicine Hospital, Guangzhou, China
| | - Nan Yao
- Guangdong Provincial Key Laboratory of Research and Development in Traditional Chinese Medicine, Guangdong Province Engineering Technology Research Institute of Traditional Chinese Medicine, Guangzhou, China
| | - Zhengyang Kang
- Department of Orthopedics, The Second People's Hospital of Panyu, Guangzhou, China
| | - Weihong Shi
- The Fifth Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China.,Department of Oncology, Huizhou Hospital of Guangzhou University of Traditional Chinese Medicine, Huizhou, China
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15
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Yan K, Hou L, Liu T, Jiao W, Ma Q, Fang Z, Zhang S, Song D, Liu J, Gao X, Fan Y. lncRNA OGFRP1 functions as a ceRNA to promote the progression of prostate cancer by regulating SARM1 level via miR-124-3p. Aging (Albany NY) 2020; 12:8880-8892. [PMID: 32428870 PMCID: PMC7288971 DOI: 10.18632/aging.103007] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Accepted: 03/03/2020] [Indexed: 12/18/2022]
Abstract
lncRNA can interact with miRNA as a ceRNA to participate in the regulation of target gene expression, thus playing an important role in the development of malignant tumors. In this research, we found that OGFRP1 was up-regulated in prostate cancer (PCa) clinical samples and cell lines. Additionally, OGFRP1 is significantly associated with TNM stages III and IV and perineural invasion. Knockdown of OGFRP1 inhibited the growth of PCa cells, suggesting a promotional effect of OGFRP1 in tumor progression. Interestingly, OGFRP1 primarily localized in the cytoplasm, while miR-124-3p was found to bind to OGFRP1. Therefore, we further analyzed the downstream target of miR-124-3p using TargetScan. The result of the luciferase reporter gene assay displayed that SARM1 was a downstream target of miR-124-3p in two PCa cell lines. The overexpression of SARM1 promoted growth and metastasis in PCa cells. Knockdown of OGFRP1 and overexpression of miR-124-3p markedly restored the promotion of SARM1 to PCa cells. In conclusion, lncRNA OGFRP1 completely bound to miR-124-3p and relieved their inhibition on SARM1, thus promoting the growth of PCa cells. This report extended our understanding of the underlying molecular mechanisms of lncRNAs in PCa, which could help us find novel diagnostic and therapeutic targets.
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Affiliation(s)
- Keqiang Yan
- Department of Urology, QiLu Hospital of Shandong University, Jinan 250012, Shandong, P.R. China
| | - Lifang Hou
- Department of Gynecology, Jinan Central Hospital, Jinan 250012, Shandong, P.R. China
| | - Tiantian Liu
- Pathology department, Basic Mmedical School, Shandong University, Jinan 250012, Shandong, P.R. China
| | - Wei Jiao
- Department of Urology, QiLu Hospital of Shandong University, Jinan 250012, Shandong, P.R. China
| | - Qian Ma
- Department of Urology, QiLu Hospital of Shandong University, Jinan 250012, Shandong, P.R. China
| | - Zhiqing Fang
- Department of Urology, QiLu Hospital of Shandong University, Jinan 250012, Shandong, P.R. China
| | - Shimin Zhang
- Department of Urology, Jinan Central Hospital Affiliated to Shandong First Medical University, Jinan 250012, Shandong, P.R. China
| | - Daoqing Song
- Department of Urology, QiLu Hospital of Shandong University, Jinan 250012, Shandong, P.R. China
| | - Jikai Liu
- Department of Urology, QiLu Hospital of Shandong University, Jinan 250012, Shandong, P.R. China
| | - Xinghua Gao
- Department of Urology, Jinan Central Hospital Affiliated to Shandong First Medical University, Jinan 250012, Shandong, P.R. China
| | - Yidong Fan
- Department of Urology, QiLu Hospital of Shandong University, Jinan 250012, Shandong, P.R. China
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Hu Y, Zheng L, Zhang J, Shen Y, Zhang X, Lin L. LncRNA-MALAT1 is a promising biomarker for prognostic evaluation of tongue squamous cell carcinoma. Eur Arch Otorhinolaryngol 2020; 277:3155-3160. [PMID: 32383096 DOI: 10.1007/s00405-020-06023-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Accepted: 04/27/2020] [Indexed: 01/04/2023]
Abstract
PURPOSE MALAT1 is recognized as an oncogenic lncRNA in various malignancies. Here, the authors aim to explore the association of MALAT1 expression and prognostic implication in tongue squamous cell carcinoma (SCC). METHODS The tongue tissues of 128 tongue SCC cases satisfying strict follow-up criteria and 28 normal cases were subjected to qRT-PCR assay for monitoring MALAT1 expression. Chi-square test was applied to explore the correlation between MALAT1 expression and clinicopathological features of tongue SCC. Kaplan-Meier analysis was used to calculate survival rates. Cox proportional hazard analysis was adopted to analyze the relationship between prognostic factors and patient survival. RESULTS The expression of MALAT1 was upregulated in tongue SCC, compared to normal tongue tissues. The expression level of MALAT1 was correlated to differentiation and stage of tongue SCC, and high MALAT1 expression was associated with low disease-free survival and overall survival rates. Moreover, advanced tongue SCC patients with high MALAT1 level had lower disease-free survival and decreased overall survival rate than patients with low MALAT1 level. These results revealed that MALAT1 overexpression can be considered as a significant prognostic factor to independently predict the disease-free survival and overall survival rate of tongue SCC. CONCLUSIONS The expression level of MALAT1 is closely related with progression of tongue SCC. Furthermore, MALAT1 can serve as an independent biomarker for prognostic evaluation of tongue SCC.
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Affiliation(s)
- Yuqian Hu
- Institute of Molecular Medicine, Medical College of Eastern Liaoning University, Dandong, 118000, China
| | - Linlin Zheng
- Institute of Molecular Medicine, Medical College of Eastern Liaoning University, Dandong, 118000, China
| | - Jinhui Zhang
- Institute of Molecular Medicine, Medical College of Eastern Liaoning University, Dandong, 118000, China
| | - Yue Shen
- Institute of Molecular Medicine, Medical College of Eastern Liaoning University, Dandong, 118000, China
| | - Xiaoyan Zhang
- Department of Pathology, Fifth People's Hospital of Shenyang City, Shenyang Tumor Hospital, Shenyang, 110023, China.
| | - Lijuan Lin
- Institute of Molecular Medicine, Medical College of Eastern Liaoning University, Dandong, 118000, China.
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17
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Hong W, Zhang W, Guan R, Liang Y, Hu S, Ji Y, Liu M, Lu H, Yu M, Ma L. Genome-wide profiling of prognosis-related alternative splicing signatures in sarcoma. ANNALS OF TRANSLATIONAL MEDICINE 2019; 7:557. [PMID: 31807538 PMCID: PMC6861818 DOI: 10.21037/atm.2019.09.65] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2019] [Accepted: 09/06/2019] [Indexed: 12/20/2022]
Abstract
BACKGROUND Sarcomas (SARCs) are rare malignant tumors with poor prognosis. Increasing evidence has suggested that aberrant alternative splicing (AS) is strongly associated with tumor initiation and progression. We considered whether survival-related AS events might serve as prognosis predictors and underlying targeted molecules in SARC treatment. METHODS RNA-Seq data of the SARC cohort were downloaded from The Cancer Genome Atlas (TCGA) database. Survival-related AS events were selected by univariate and multivariate Cox regression analyses. Metascape was used for constructing a gene interaction network and performing functional enrichment analysis. Then, prognosis predictors were established based on statistically significant survival-related AS events and evaluated by receiver operator characteristic (ROC) curve analysis. Finally, the potential regulatory network was analyzed via Pearson's correlation between survival-related AS events and splicing factors (SFs). RESULTS A total of 3,610 AS events and 2,291 genes were found to be prognosis-related in 261 SARC samples. The focal adhesion pathway was identified as the most critical molecular mechanism corresponding to poor prognosis. Notably, several prognosis predictors based on survival-related AS events showed excellent performance in prognosis prediction. The area under the curve of the ROC of the risk score was 0.85 in the integrated predictor. The splicing network proved complicated regulation between prognosis-related SFs and AS events. Also, driver gene mutations were significantly associated with AS in SARC patients. CONCLUSIONS Survival-related AS events may become ideal indictors for the prognosis prediction of SARCs. Corresponding splicing regulatory mechanisms are worth further exploration.
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Affiliation(s)
- Weifeng Hong
- Department of Medical Imaging, The First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou 510080, China
| | - Weicong Zhang
- Department of Orthopaedics, The Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai 519000, China
| | - Renguo Guan
- Department of General Surgery, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510000, China
| | - Yuying Liang
- Department of Medical Imaging, The First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou 510080, China
| | - Shixiong Hu
- Department of General Surgery, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510000, China
| | - Yayun Ji
- Department of Medical Imaging, The First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou 510080, China
| | - Mouyuan Liu
- Department of Medical Imaging, The First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou 510080, China
| | - Hai Lu
- Department of Orthopaedics, The Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai 519000, China
| | - Min Yu
- Department of General Surgery, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510000, China
| | - Liheng Ma
- Department of Medical Imaging, The First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou 510080, China
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18
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Botti G, Giordano A, Feroce F, De Chiara AR, Cantile M. Noncoding RNAs as circulating biomarkers in osteosarcoma patients. J Cell Physiol 2019; 234:19249-19255. [PMID: 31032924 DOI: 10.1002/jcp.28744] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 03/08/2019] [Accepted: 03/19/2019] [Indexed: 12/14/2022]
Abstract
Noncoding RNAs (ncRNAs) identify a large family of RNAs that do not encode proteins and represent an important group of tumor biomarkers, directly involved in the process of tumor pathogenesis and progression. Many of them have also been identified in biological fluids of patients with cancer, especially blood, suggesting their role as an emerging class of circulating biomarkers. Many ncRNAs, both miRNAs and lncRNAs, are deregulated in sarcoma tissues, with the most consistent data in osteosarcomas. In patients with osteosarcoma, the role of ncRNAs as circulating biomarkers is taking enormous value, above all for their ability to vary expression levels during disease progression and in response to therapy. In this mini-review, we summarize the main studies supporting the role of circulating ncRNAs in monitoring disease status in patients with osteosarcoma.
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Affiliation(s)
- Gerardo Botti
- Scientific Direction, Istituto Nazionale Tumori-Irccs-Fondazione G.Pascale, Naples, Italy
| | - Antonio Giordano
- Sbarro Institute for Cancer Research and Molecular Medicine, Center for Biotechnology College of Science and Technology, Temple University, Philadelphia, Pennsylvania.,Department of Medicine Surgery and Neuroscience, University of Siena, Siena, Italy
| | - Florinda Feroce
- Pathology Unit, Istituto Nazionale Tumori-Irccs-Fondazione G.Pascale, Naples, Italy
| | | | - Monica Cantile
- Pathology Unit, Istituto Nazionale Tumori-Irccs-Fondazione G.Pascale, Naples, Italy
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Gyvyte U, Kupcinskas J, Juzenas S, Inciuraite R, Poskiene L, Salteniene V, Link A, Fassan M, Franke A, Kupcinskas L, Skieceviciene J. Identification of long intergenic non-coding RNAs (lincRNAs) deregulated in gastrointestinal stromal tumors (GISTs). PLoS One 2018; 13:e0209342. [PMID: 30557328 PMCID: PMC6296525 DOI: 10.1371/journal.pone.0209342] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Accepted: 12/04/2018] [Indexed: 12/12/2022] Open
Abstract
Long intergenic non-coding RNAs (lincRNAs) are >200 nucleotides long non-coding RNAs, which have been shown to be implicated in carcinogenic processes by interacting with cancer associated genes or other non-coding RNAs. However, their role in development of rare gastrointestinal stromal tumors (GISTs) is barely investigated. Therefore, the aim of this study was to define lincRNAs deregulated in GIST and find new GIST-lincRNA associations. Next-generation sequencing data of paired GIST and adjacent tissue samples from 15 patients were subjected to a web-based lincRNA analysis. Three deregulated lincRNAs (MALAT1, H19 and FENDRR; adjusted p-value < 0.05) were selected for expression validation in a larger group of patients (n = 22) by RT-qPCR method. However, only H19 and FENDRR showed significant upregulation in the validation cohort (adjusted p < 0.05). Further, we performed correlation analyses between expression levels of deregulated lincRNAs and GIST-associated oncogenes or GIST deregulated microRNAs. We found high positive correlations between expression of H19 and known GIST related oncogene ETV1, and between H19 and miR-455-3p. These findings expand the knowledge on lincRNAs deregulated in GIST and may be an important resource for the future studies investigating lincRNAs functionally relevant to GIST carcinogenesis.
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Affiliation(s)
- Ugne Gyvyte
- Institute for Digestive Research, Academy of Medicine, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Juozas Kupcinskas
- Institute for Digestive Research, Academy of Medicine, Lithuanian University of Health Sciences, Kaunas, Lithuania
- Department of Gastroenterology, Academy of Medicine, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Simonas Juzenas
- Institute for Digestive Research, Academy of Medicine, Lithuanian University of Health Sciences, Kaunas, Lithuania
- Institute of Clinical Molecular Biology, Christian-Albrechts University, Kiel, Germany
| | - Ruta Inciuraite
- Institute for Digestive Research, Academy of Medicine, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Lina Poskiene
- Department of Pathological Anatomy, Academy of Medicine, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Violeta Salteniene
- Institute for Digestive Research, Academy of Medicine, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Alexander Link
- Department of Gastroenterology, Hepatology and Infectious Diseases, Otto-von-Guericke University, Magdeburg, Germany
| | - Matteo Fassan
- Department of Medicine (DMID), Surgical Pathology & Cytopathology Unit, University of Padua, Padua, Italy
| | - Andre Franke
- Institute of Clinical Molecular Biology, Christian-Albrechts University, Kiel, Germany
| | - Limas Kupcinskas
- Institute for Digestive Research, Academy of Medicine, Lithuanian University of Health Sciences, Kaunas, Lithuania
- Department of Gastroenterology, Academy of Medicine, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Jurgita Skieceviciene
- Institute for Digestive Research, Academy of Medicine, Lithuanian University of Health Sciences, Kaunas, Lithuania
- * E-mail:
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Low HIF-1α and low EGFR mRNA Expression Significantly Associate with Poor Survival in Soft Tissue Sarcoma Patients; the Proteins React Differently. Int J Mol Sci 2018; 19:ijms19123842. [PMID: 30513863 PMCID: PMC6321736 DOI: 10.3390/ijms19123842] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Revised: 11/27/2018] [Accepted: 11/29/2018] [Indexed: 12/22/2022] Open
Abstract
In various tumors, the hypoxia inducible factor-1α (HIF-1α) and the epidermal growth factor-receptor (EGFR) have an impact on survival. Nevertheless, the prognostic impact of both markers for soft tissue sarcoma (STS) is not well studied. We examined 114 frozen tumor samples from adult soft tissue sarcoma patients and 19 frozen normal tissue samples. The mRNA levels of HIF-1α, EGFR, and the reference gene hypoxanthine phosphoribosyltransferase (HPRT) were quantified using a multiplex qPCR technique. In addition, levels of EGFR or HIF-1α protein were determined from 74 corresponding protein samples using ELISA techniques. Our analysis showed that a low level of HIF-1α or EGFR mRNA (respectively, relative risk (RR) = 2.8; p = 0.001 and RR = 1.9; p = 0.04; multivariate Cox´s regression analysis) is significantly associated with a poor prognosis in STS patients. The combination of both mRNAs in a multivariate Cox’s regression analysis resulted in an increased risk of early tumor-specific death of patients (RR = 3.1, p = 0.003) when both mRNA levels in the tumors were low. The EGFR protein level had no association with the survival of the patient’s cohort studied, and a higher level of HIF-1α protein associated only with a trend to significance (multivariate Cox’s regression analysis) to a poor prognosis in STS patients (RR = 1.9, p = 0.09). However, patients with low levels of HIF-1α protein and a high content of EGFR protein in the tumor had a three-fold better survival compared to patients without such constellation regarding the protein level of HIF-1α and EGFR. In a bivariate two-sided Spearman’s rank correlation, a significant correlation between the expression of HIF-1α mRNA and expression of EGFR mRNA (p < 0.001) or EGFR protein (p = 0.001) was found, additionally, EGFR mRNA correlated with EGFR protein level (p < 0.001). Our results show that low levels of HIF-1α mRNA or EGFR mRNA are negative independent prognostic markers for STS patients, especially after combination of both parameters. The protein levels showed a different effect on the prognosis. In addition, our analysis suggests a possible association between HIF-1α and EGFR expression in STS.
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Emerging roles of non-coding RNAs in the pathogenesis, diagnosis and prognosis of osteosarcoma. Invest New Drugs 2018; 36:1116-1132. [DOI: 10.1007/s10637-018-0624-7] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Accepted: 06/18/2018] [Indexed: 12/13/2022]
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Sui F, Ji M, Hou P. Long non-coding RNAs in thyroid cancer: Biological functions and clinical significance. Mol Cell Endocrinol 2018; 469:11-22. [PMID: 28751134 DOI: 10.1016/j.mce.2017.07.020] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Revised: 07/21/2017] [Accepted: 07/21/2017] [Indexed: 01/07/2023]
Abstract
Thyroid cancer is the most common endocrine malignant tumor with rapidly increasing incidence in recent decades. Although the majority of thyroid cancers are relatively indolent, some cases still have a risk of developing into more aggressive and lethal forms of thyroid cancers. Similar to other malignancies, thyroid tumorigenesis is a multistep process involving the accumulation of a large number of genetic and epigenetic alterations. Thus, determination of the mechanisms of tumorigenesis is an urgent need for thyroid cancer treatment. Long noncoding RNAs (LncRNAs) have recently been demonstrated to participate in cancer progression. However, their role and molecular mechanism in thyroid cancer remain largely unclear. In this review, we focus on the dysregulation of lncRNAs in thyroid cancer, summarize the latest findings regarding the functions and mechanism of lncRNAs in thyroid cancer, and discuss their potential clinical significance in diagnosis and prognosis of thyroid cancer.
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Affiliation(s)
- Fang Sui
- Department of Endocrinology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, PR China
| | - Meiju Ji
- Center for Translational Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, PR China
| | - Peng Hou
- Department of Endocrinology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, PR China; Key Laboratory for Tumor Precision Medicine of Shanxi Province, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, PR China.
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Chen W, You J, Zheng Q, Zhu YY. Downregulation of lncRNA OGFRP1 inhibits hepatocellular carcinoma progression by AKT/mTOR and Wnt/β-catenin signaling pathways. Cancer Manag Res 2018; 10:1817-1826. [PMID: 29997441 PMCID: PMC6033083 DOI: 10.2147/cmar.s164911] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Introduction Increasing evidence demonstrates that long noncoding RNAs (lncRNAs) play important roles in the progression of hepatocellular carcinoma (HCC) by regulating gene expression. However, the identification of functional lncRNAs in HCC remains insufficient. Our study aimed to investigate the function of lncRNA OGFRP1, which has not been functionally researched before, in Hep3B and HepG2 cells. Methods lncRNA OGFRP1 in HCC cells was down-regulated by using RNAi technology. Quantitative real-time polymerase chain reaction was used to determine the mRNA expression of lncRNA OGFRP1. Cell proliferation was examined by CCK8 and clone formation assays. Cell cycle and apoptosis were analyzed by flow cytometry. Cell migration and invasion were assessed by using Scratch assay and transwell assay, respectively. Protein expression of signaling pathways was determined by using Western blot. Results Cell proliferation of Hep3B was significantly inhibited by down-regulation of lncRNA OGFRP1 (P<0.05). Moreover, siOGFRP1 transfection induced Hep3B cell cycle arrest and apoptosis by regulating the expression of related proteins. Cell migration and invasion of Hep3B were also significantly inhibited by down-regulation of lncRNA OGFRP1. Wnt/β-catenin signaling pathway, involved in epithelial–mesenchymal transition (EMT), was inactivated by lncRNA OGFRP1 downregulation, including decreased expression of Wnt3a, β-catenin, N-cadherin and vimentin and increased expression of E-cadherin. We also found that the inhibitory effect of lncRNA OGFRP1 knockdown on Hep3B was mediated by the AKT/mTOR signaling pathway and IGF-1, an AKT signaling activator, could rescue the cellular phenotype. However, knockdown of lncRNA OGFRP1 did not influence cell proliferation, migration and invasion in HepG2 cells. Conclusion We found that downregulation of lncRNA OGFRP1 suppressed the proliferation and EMT of HCC Hep3B cells through AKT and Wnt/β-catenin signaling pathways. However, lncRNA OGFRP1 exhibited a differentiated function in different HCC cell lines, which required further study in the future.
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Affiliation(s)
- Wei Chen
- Center for Liver Diseases, The First Affiliated Hospital, Fujian Medicine University, Fuzhou 350005, Fujian Province, China, ;
| | - Jia You
- Center for Liver Diseases, The First Affiliated Hospital, Fujian Medicine University, Fuzhou 350005, Fujian Province, China, ;
| | - Qi Zheng
- Center for Liver Diseases, The First Affiliated Hospital, Fujian Medicine University, Fuzhou 350005, Fujian Province, China, ;
| | - Yue-Yong Zhu
- Center for Liver Diseases, The First Affiliated Hospital, Fujian Medicine University, Fuzhou 350005, Fujian Province, China, ;
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Jiang Z, Jiang C, Fang J. Up-regulated lnc-SNHG1 contributes to osteosarcoma progression through sequestration of miR-577 and activation of WNT2B/Wnt/β-catenin pathway. Biochem Biophys Res Commun 2018; 495:238-245. [DOI: 10.1016/j.bbrc.2017.11.012] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Accepted: 11/02/2017] [Indexed: 12/31/2022]
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Long non-coding HCG18 promotes intervertebral disc degeneration by sponging miR-146a-5p and regulating TRAF6 expression. Sci Rep 2017; 7:13234. [PMID: 29038477 PMCID: PMC5643303 DOI: 10.1038/s41598-017-13364-6] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Accepted: 09/21/2017] [Indexed: 02/07/2023] Open
Abstract
Intervertebral disc degeneration (IDD) is associated with the deterioration of nucleus pulposus (NP) cells due to hypertrophic differentiation and calcification. Emerging studies have shown that long noncoding RNAs (lncRNAs) play critical roles in the development of IDD. Using bioinformatics prediction, we hereby sought to identify the lncRNAs that regulate the expression of microRNA-146a-5p (miR-146a-5p), an IDD-related inflammatory factor. Our study demonstrated that lncRNA HCG18 acted as an endogenous sponge to down-regulate miR-146a-5p expression in the NP cells by directly binding to miR-146a-5p. In addition, HCG18 expression was up-regulated in the patients with IDD, bulging or herniated discs, and its level was positively correlated with the disc degeneration grade. In vitro, miR-146a-5p up-regulation HCG18 retarded the growth of NP cells by decreasing S phase of cell cycle, inducing cell apoptosis, recruitment of macrophages and hypercalcification. Conversely, down-regulation of miR-146a-5p exerted opposite effects. Furthermore, we elucidated that TRAF6, a target gene by miR-146a-5p, was modulated by HCG18 expression. Restore of TRAF6 expression by virus infection reserved the effect of HCG18 on the NP cells. Altogether, our data indicated that HCG18 suppressed the growth of NP cells and promoted the IDD development via the miR-146a-5p/TRAF6/NFκB axis.
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Hua F, Li CH, Chen XG, Liu XP. Long Noncoding RNA CCAT2 Knockdown Suppresses Tumorous Progression by Sponging miR-424 in Epithelial Ovarian Cancer. Oncol Res 2017; 26:241-247. [PMID: 28550684 PMCID: PMC7844706 DOI: 10.3727/096504017x14953948675412] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Epithelial ovarian cancer (EOC) is the one of most common gynecological malignant tumors with high mortality. A series of long noncoding RNAs (lncRNAs) have been validated to play a vital role in EOC tumorigenesis. Colon cancer-associated transcript 2 (CCAT2) has been verified as an oncogenic lncRNA in multiple tumors; however, the role of CCAT2 in EOC genesis is still unclear. The purpose of the present study was to probe the function of CCAT2 on EOC. Preliminary experiments found that CCAT2 expression was significantly upregulated in EOC tissues and cell lines compared to noncancerous tissue and cells. CCAT2 knockdown induced by interfering oligonucleotides could inhibit proliferation and promote apoptosis and induce cell cycle arrest at the G0/G1 phase. Bioinformatics analysis predicted that miR-424 targeted CCAT2, which was confirmed by luciferase reporter assay. Moreover, the miR-424 inhibitor rescued the tumorigenesis inhibition induced by CCAT2 knockdown. In summary, our findings illustrate that CCAT2 acts as competing endogenous RNA (ceRNA) or sponge via negatively targeting miR-424, providing a novel diagnostic marker and therapeutic target for EOC.
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Affiliation(s)
- Fu Hua
- Department of Gynecology, Huai'an First People's Hospital, Nanjing Medical University, Huai'an, P.R. China
| | - Chang-Hua Li
- Department of Gynecology, Huai'an First People's Hospital, Nanjing Medical University, Huai'an, P.R. China
| | - Xiao-Gang Chen
- Department of Orthopedics, Huai'an First People's Hospital, Nanjing Medical University, Huai'an, P.R. China
| | - Xiao-Ping Liu
- Department of Gynecology, Huai'an First People's Hospital, Nanjing Medical University, Huai'an, P.R. China
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