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Chen Z, Guan D, Zhu Q, Wang Z, Han F, Zhou W. Biological Roles and Pathogenic Mechanisms of LncRNA MIR4435-2HG in Cancer: A Comprehensive Review. Curr Issues Mol Biol 2023; 45:8864-8881. [PMID: 37998733 PMCID: PMC10670187 DOI: 10.3390/cimb45110556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 10/30/2023] [Accepted: 11/02/2023] [Indexed: 11/25/2023] Open
Abstract
The long non-coding RNA MIR4435-2HG has been confirmed to play a crucial regulatory role in various types of tumors. As a novel type of non-coding RNA, MIR4435-2HG plays a key role in regulating the expression of tumor-related genes, interfering with cellular signaling pathways, and affecting tumor immune evasion. Its unique structure allows it to regulate the expression of various tumor-related genes through different pathways, participating in the regulation of tumor signaling pathways, such as regulating the expression of oncogenes and tumor suppressor genes, influencing the biological behaviors of proliferation, metastasis, and apoptosis in tumors. Numerous studies have found a high expression of MIR4435-2HG in various tumor tissues, closely related to the clinical pathological characteristics of tumors, such as staging, lymph node metastasis and prognosis. Some studies have discovered that MIR4435-2HG can regulate the sensitivity of tumor cells to chemotherapy drugs, affecting tumor cell drug resistance. This provides new insights into overcoming tumor drug resistance by regulating MIR4435-2HG. Therefore, studying its molecular mechanisms, expression regulation, and its relationship with the clinical features of tumors is of great significance for revealing the mechanisms of tumor occurrence and developing new therapeutic targets.
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Affiliation(s)
- Zhou Chen
- The First Clinical Medical College, Lanzhou University, Lanzhou 730000, China
- The First Hospital of Lanzhou University, Lanzhou 730000, China
| | - Defeng Guan
- The First Clinical Medical College, Lanzhou University, Lanzhou 730000, China
- The First Hospital of Lanzhou University, Lanzhou 730000, China
| | - Qiangping Zhu
- The First Clinical Medical College, Lanzhou University, Lanzhou 730000, China
| | - Zhengfeng Wang
- The First Clinical Medical College, Lanzhou University, Lanzhou 730000, China
- The First Hospital of Lanzhou University, Lanzhou 730000, China
| | - Fangfang Han
- The First Clinical Medical College, Lanzhou University, Lanzhou 730000, China
- The First Hospital of Lanzhou University, Lanzhou 730000, China
| | - Wence Zhou
- The First Clinical Medical College, Lanzhou University, Lanzhou 730000, China
- The Department of General Surgery, Lanzhou University Second Hospital, Lanzhou 730000, China
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2
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Zhang L, Kang Q, Kang M, Jiang S, Yang F, Gong J, Ou G, Wang S. Regulation of main ncRNAs by polyphenols: A novel anticancer therapeutic approach. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2023; 120:155072. [PMID: 37714063 DOI: 10.1016/j.phymed.2023.155072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 08/29/2023] [Accepted: 09/04/2023] [Indexed: 09/17/2023]
Abstract
BACKGROUND Plant polyphenols have shown promising applications in oncotherapy. Increasing evidence reveals that polyphenols possess the antitumor potential for multiple cancers. Non-coding RNAs (ncRNAs), mainly including small ncRNAs (microRNA) and long ncRNAs (lncRNAs), play critical roles in cancer initiation and progression. PURPOSE To establish the modulation of ncRNAs by polyphenols as a novel and promising approach in anticancer treatment. STUDY DESIGN The present research employed ncRNA, miRNA, lncRNA, and regulatory mechanism as keywords to retrieve the literature from PubMed, Web of Science, Science direct, and Google Scholar, in a 20-year period from 2003 to 2023. This study critically reviewed the current literature and presented the regulation of prominent ncRNAs by polyphenols. A comprehensive total of 169 papers were retrieved on polyphenols and their related ncRNAs in cancers. RESULTS NcRNAs, mainly including miRNA and lncRNA, play critical roles in cancer initiation and progression, which are potential modulatory targets of bioactive polyphenols, such as resveratrol, genistein, curcumin, EGCG, quercetin, in cancer management. The mechanism involved in polyphenol-mediated ncRNA regulation includes epigenetic and transcriptional modification, and post-transcriptional processing. CONCLUSION Regulatory ncRNAs are potential therapeutic targets of bioactive polyphenols, and these phytochemicals could modulate the level of these ncRNAs directly and indirectly. A better comprehension of the ncRNA regulation by polyphenols in cancers, their functional outcomes on tumor pathophysiology and regulatory molecular mechanisms, may be helpful to develop effective strategies to fight the devastating disease.
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Affiliation(s)
- Liang Zhang
- Hubei Superior Discipline Group of Exercise and Brain Science from Hubei Provincial, Wuhan Sports University, Wuhan 430079, China
| | - Qingzheng Kang
- Department of Hematology and Oncology, International Cancer Center, Shenzhen Key Laboratory, Shenzhen University General Hospital, Shenzhen University, Shenzhen 518061, China
| | | | - Suwei Jiang
- School of Medicine, Shenzhen University, Shenzhen 518060, China
| | - Feng Yang
- BGI-Shenzhen, Shenzhen 518103, China
| | - Jun Gong
- Central Laboratory, Yunfu People's Hospital, Yunfu 527399, China
| | - Gaozhi Ou
- School of Physical Education, China University of Geosciences, Wuhan 430074, China
| | - Song Wang
- Hubei Superior Discipline Group of Exercise and Brain Science from Hubei Provincial, Wuhan Sports University, Wuhan 430079, China.
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3
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Ngum JA, Tatang FJ, Toumeni MH, Nguengo SN, Simo USF, Mezajou CF, Kameni C, Ngongang NN, Tchinda MF, Dongho Dongmo FF, Akami M, Ngane Ngono AR, Tamgue O. An overview of natural products that modulate the expression of non-coding RNAs involved in oxidative stress and inflammation-associated disorders. Front Pharmacol 2023; 14:1144836. [PMID: 37168992 PMCID: PMC10165025 DOI: 10.3389/fphar.2023.1144836] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Accepted: 03/24/2023] [Indexed: 05/13/2023] Open
Abstract
Oxidative stress is a state in which oxidants are produced in excess in the body's tissues and cells, resulting in a biological imbalance amid the generation of reactive oxygen and nitrogen species (RONS) from redox reactions. In case of insufficient antioxidants to balance, the immune system triggers signaling cascades to mount inflammatory responses. Oxidative stress can have deleterious effects on major macromolecules such as lipids, proteins, and nucleic acids, hence, Oxidative stress and inflammation are among the multiple factors contributing to the etiology of several disorders such as diabetes, cancers, and cardiovascular diseases. Non-coding RNAs (ncRNAs) which were once referred to as dark matter have been found to function as key regulators of gene expression through different mechanisms. They have dynamic roles in the onset and development of inflammatory and oxidative stress-related diseases, therefore, are potential targets for the control of those diseases. One way of controlling those diseases is through the use of natural products, a rich source of antioxidants that have drawn attention with several studies showing their involvement in combating chronic diseases given their enormous gains, low side effects, and toxicity. In this review, we highlighted the natural products that have been reported to target ncRNAs as mediators of their biological effects on oxidative stress and several inflammation-associated disorders. Those natural products include Baicalein, Tanshinone IIA, Geniposide, Carvacrol/Thymol, Triptolide, Oleacein, Curcumin, Resveratrol, Solarmargine, Allicin, aqueous extract or pulp of Açai, Quercetin, and Genistein. We also draw attention to some other compounds including Zanthoxylum bungeanum, Canna genus rhizome, Fuzi-ganjiang herb pair, Aronia melanocarpa, Peppermint, and Gingerol that are effective against oxidative stress and inflammation-related disorders, however, have no known effect on ncRNAs. Lastly, we touched on the many ncRNAs that were found to play a role in oxidative stress and inflammation-related disorders but have not yet been investigated as targets of a natural product. Shedding more light into these two last points of shadow will be of great interest in the valorization of natural compounds in the control and therapy of oxidative stress- and inflammation-associated disorders.
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Yu H, Chen C, Han F, Tang J, Deng M, Niu Y, Lai M, Zhang H. Long Noncoding RNA MIR4435-2HG Suppresses Colorectal Cancer Initiation and Progression By Reprogramming Neutrophils. Cancer Immunol Res 2022; 10:1095-1110. [PMID: 35862232 PMCID: PMC9433964 DOI: 10.1158/2326-6066.cir-21-1011] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 03/31/2022] [Accepted: 07/15/2022] [Indexed: 01/07/2023]
Abstract
MIR4435-2HG, also known as LINC00978, has previously been described as an oncogenic long noncoding RNA (lncRNA). However, we show here that Mir4435-2hg depletion promoted colorectal tumorigenesis and progression in in vivo models of colitis-associated colorectal cancer, spontaneous intestinal adenomatous polyposis, and subcutaneous tumors. Alteration of MIR4435-2HG in colorectal cancer cells did not change the potential for cell proliferation, migration, or invasion in vitro. RNAscope assays showed that most MIR4435-2HG was located in the tumor stroma, which caused high expression of MIR4435-2HG in colorectal cancer tumor tissue. Transcriptome analysis of colorectal cancer tissues from wild-type and Mir4435-2hg-deficient mice revealed Mir4435-2hg as a tumor suppressor gene that regulated the immune microenvironment. Loss of Mir4435-2hg led to a decline in neutrophils and elevation of polymorphonuclear myeloid-derived suppressor cells (PMN-MDSC). In tissue-specific Mir4435-2hg knockout mice, we confirmed that Mir4435-2hg depletion in neutrophils, but not in intestinal epithelial cells, promoted colorectal cancer progression. Mechanistically, Mir4435-2hg depletion enhanced the immunosuppressive ability of PMN-MDSCs by disturbing their fatty acid metabolism. These findings suggest that MIR4435-2HG is a tumor-suppressing lncRNA whose deficiency could increase tumor-infiltrating PMN-MDSCs and enhance the immunosuppressive potential of PMN-MDSCs to promote colorectal cancer development. This provides a theoretical basis for further illustrating the pathogenesis of colorectal cancer and a potential antitumor immunotherapy target.
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Affiliation(s)
- Hongfei Yu
- Department of Pathology and Women's Hospital, Zhejiang University School of Medicine, Research Unit of Intelligence Classification of Tumor Pathology and Precision Therapy, Chinese Academy of Medical Sciences (2019RU042), Hangzhou, China
| | - Chaoyi Chen
- Department of Pathology and Women's Hospital, Zhejiang University School of Medicine, Research Unit of Intelligence Classification of Tumor Pathology and Precision Therapy, Chinese Academy of Medical Sciences (2019RU042), Hangzhou, China
| | - Fengyan Han
- Department of Pathology and Women's Hospital, Zhejiang University School of Medicine, Research Unit of Intelligence Classification of Tumor Pathology and Precision Therapy, Chinese Academy of Medical Sciences (2019RU042), Hangzhou, China
| | - Jinlong Tang
- Department of Pathology and Women's Hospital, Zhejiang University School of Medicine, Research Unit of Intelligence Classification of Tumor Pathology and Precision Therapy, Chinese Academy of Medical Sciences (2019RU042), Hangzhou, China
| | - Mengli Deng
- Department of Pathology and Women's Hospital, Zhejiang University School of Medicine, Research Unit of Intelligence Classification of Tumor Pathology and Precision Therapy, Chinese Academy of Medical Sciences (2019RU042), Hangzhou, China
| | - Yumiao Niu
- Department of Pathology and Women's Hospital, Zhejiang University School of Medicine, Research Unit of Intelligence Classification of Tumor Pathology and Precision Therapy, Chinese Academy of Medical Sciences (2019RU042), Hangzhou, China
| | - Maode Lai
- Department of Pathology, Research Unit of Intelligence Classification of Tumor Pathology and Precision Therapy of Chinese Academy of Medical Sciences (2019RU042), Zhejiang University School of Medicine, Hangzhou, China.,Key Laboratory of Disease Proteomics of Zhejiang Province, Hangzhou, China.,Cancer Center, Zhejiang University, Hangzhou, China.,Department of Pharmacology, China Pharmaceutical University, Nanjing, China.,Corresponding Authors: Honghe Zhang, Department of Pathology, Research Unit of Intelligence Classification of Tumor Pathology and Precision Therapy of Chinese Academy of Medical Sciences (2019RU042), Zhejiang University School of Medicine, Yuhangtang Road 866#, Hangzhou, Zhejiang 310058, China. E-mails: ; and Maode Lai,
| | - Honghe Zhang
- Department of Pathology and Women's Hospital, Zhejiang University School of Medicine, Research Unit of Intelligence Classification of Tumor Pathology and Precision Therapy, Chinese Academy of Medical Sciences (2019RU042), Hangzhou, China.,Key Laboratory of Disease Proteomics of Zhejiang Province, Hangzhou, China.,Cancer Center, Zhejiang University, Hangzhou, China.,Corresponding Authors: Honghe Zhang, Department of Pathology, Research Unit of Intelligence Classification of Tumor Pathology and Precision Therapy of Chinese Academy of Medical Sciences (2019RU042), Zhejiang University School of Medicine, Yuhangtang Road 866#, Hangzhou, Zhejiang 310058, China. E-mails: ; and Maode Lai,
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Zhong C, Xie Z, Zeng LH, Yuan C, Duan S. MIR4435-2HG Is a Potential Pan-Cancer Biomarker for Diagnosis and Prognosis. Front Immunol 2022; 13:855078. [PMID: 35784328 PMCID: PMC9240468 DOI: 10.3389/fimmu.2022.855078] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Accepted: 05/23/2022] [Indexed: 01/11/2023] Open
Abstract
The lncRNA MIR4435-2 host gene (MIR4435-2HG) is located on human chromosome 2q13, and its expression is up-regulated in 18 tumors. MIR4435-2HG participates in 6 signaling pathways to promote tumorigenesis, including the TGF-β signaling pathway, Wnt/β-catenin signaling pathway, MDM2/p53 signaling pathway, PI3K/AKT signaling pathway, Hippo signaling pathway, and MAPK/ERK signaling pathway. MIR4435-2HG competitively binds with 20 miRNAs to form a complex ceRNA network, thereby regulating the expression of downstream target genes. The high expression of MIR4435-2HG is also closely related to the clinicopathological characteristics and poor prognosis of a variety of tumors. Also, the high expression of MIR4435-2HG in peripheral blood or serum has the value of predicting the risk of 9 tumors. In addition, MIR4435-2HG participates in the mechanism of action of three cancer drugs, including resveratrol for the treatment of lung cancer, cisplatin for non-small cell lung cancer and colon cancer, and carboplatin for triple-negative breast cancer. This article systematically summarizes the diagnostic and prognostic value of MIR4435-2HG in a variety of tumors and outlines the ceRNA network and signaling pathways related to MIR4435-2HG, which will provide potential directions for future MIR4435-2HG research.
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Affiliation(s)
- Chenming Zhong
- Department of Clinical Medicine, School of Medicine, Zhejiang University City College, Hangzhou, China
- Medical Genetics Center, School of Medicine, Ningbo University, Ningbo, China
| | - Zijun Xie
- Medical Genetics Center, School of Medicine, Ningbo University, Ningbo, China
| | - Ling-hui Zeng
- Department of Clinical Medicine, School of Medicine, Zhejiang University City College, Hangzhou, China
| | - Chunhui Yuan
- Department of Clinical Medicine, School of Medicine, Zhejiang University City College, Hangzhou, China
- *Correspondence: Shiwei Duan, ; Chunhui Yuan,
| | - Shiwei Duan
- Department of Clinical Medicine, School of Medicine, Zhejiang University City College, Hangzhou, China
- Medical Genetics Center, School of Medicine, Ningbo University, Ningbo, China
- Institute of Translational Medicine, Zhejiang University City College, Hangzhou, China
- *Correspondence: Shiwei Duan, ; Chunhui Yuan,
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Cheng Z, Gong L, Cai Q. LncRNA00978 contributes to growth and metastasis of hepatocellular carcinoma cells via mediating microRNA-125b-5p/SOX12 pathway. Bioengineered 2022; 13:11228-11239. [PMID: 35485164 PMCID: PMC9208515 DOI: 10.1080/21655979.2022.2063648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
As a malignant tumor, HCC (hepatocellular carcinoma) is featured by a high recurrence rate with a poor prognosis. Increasing evidence supports an important role of lincRNAs in HCC. Here, the purpose of the study was to explore the function of LINC00978 (long non-coding RNA00978) in HCC and the underlying mechanisms. LINC00978 expression and its association with the progression of HCC were analyzed using HCC TCGA datasets. LINC00978 expression in tissues was measured using real-time PCR. Then, we knocked down LINC00978 in HCC cells to explore its effect on cellular invasion, proliferation, and migration. Finally, we investigated the potential molecular mechanism of LINC00978 by dual Luciferase reporter assay, FISH (fluorescence in situ hybridization) and RIP (RNA immunoprecipitation). LINC00978 expression was remarkably increased in HCC. A high level of LINC00978 was associated with poor prognosis of HCC. Additionally, LINC00978 silencing could repress the growth and metastasis of HCC cells. Mechanistically, it was revealed that LINC00978 could sponge microRNA-125b-5p and identified SOX12 (SRY-Box Transcription Factor 12) as a direct target gene of microRNA-125b-5p. More importantly, the suppressed effect of LINC00978 silencing on the metastasis and growth of HCC cells could be rescued by miR-125b-5p inhibition and overexpressed SOX12. LINC00978/microRNA-125b-5p/SOX12 axis promoted liver cancer migration, invasion, and proliferation, which could be used as a possible therapeutic target for the treatment of hepatocellular carcinoma.
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Affiliation(s)
- Zhiqing Cheng
- Department of Hepatopancreatobiliary Surgery, Affiliated Hospital of Putian University, Putian, Fujian, China
| | - Limei Gong
- Department of General Medicine, Affiliated Hospital of Putian University, Putian, Fujian, China
| | - Qinghe Cai
- Department of Hepatopancreatobiliary Surgery, Affiliated Hospital of Putian University, Putian, Fujian, China
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Xu M, Chen Z, Lin B, Zhang S, Qu J. A seven-lncRNA signature for predicting prognosis in breast carcinoma. Transl Cancer Res 2022; 10:4033-4046. [PMID: 35116701 PMCID: PMC8797290 DOI: 10.21037/tcr-21-747] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Accepted: 07/16/2021] [Indexed: 12/13/2022]
Abstract
Background Long non-coding RNAs (lncRNAs) play an important part in tumorigenesis and cancer metastasis and can serve as a potential biosignature for cancer prognosis. However, the use of lncRNA signatures to predict survival in breast carcinoma is yet unreported. Methods The lncRNA expression profiles and homologous clinical data of 913 breast carcinoma samples from the Cancer Genome Atlas (TCGA), were analyzed to obtain 2,547 differentially expressed lncRNAs. Univariate Cox proportional risk regression was applied to both the training and testing datasets to screen the common prognostic lncRNAs. Potential prognostic LncRNAs were screened by multivariate Cox proportional risk regression in the training data set of the selected LncRNAs. Results Seven lncRNAs (LINC02037, MAPT-AS1, RP1-37C10.3, RP11-344E13.4, RP11-454P21.1, RP11-616M22.1, SPACA6P-AS) were prominently associated with overall survival. Kaplan-Meier analysis and receiver operating characteristic (ROC) curves indicated that these indicators were sensitive and specific for survival prediction. The areas under the ROC curve of the seven-lncRNA signature in predicting 3- and 5-year survival rates were 0.771 and 0.780 respectively in the combined cohort. Furthermore, enrichment analysis revealed that these seven lncRNAs might participate multiple pathways related to tumorigenesis and prognosis. Conclusions The proposed seven-lncRNA signature could serve as a latent prognostic biomarker for survival prediction in patients with breast carcinoma.
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Affiliation(s)
- Min Xu
- Department of Operating Room, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Ziyan Chen
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Bangyi Lin
- Department of Thyroid and Breast Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Sina Zhang
- Key Laboratory of Diagnosis and Treatment of Severe Hepato-Pancreatic Diseases of Zhejiang Province, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Jinmiao Qu
- Department of Thyroid and Breast Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
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Competing Endogenous RNA Network in Non-Keloid-Prone Individuals During Wound Healing. J Craniofac Surg 2021; 33:29-34. [PMID: 34882650 DOI: 10.1097/scs.0000000000007824] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
ABSTRACT To study the interaction between differentially expressed long non-coding RNAs (lncRNAs), microRNAs, and messenger RNAs during wound healing in normal individuals. The GSE113621 dataset was downloaded from gene expression matrix, specimens regarding non-keloid-prone individuals were selected, including items before and 6 weeks after injury. A Pearson correlation coefficient of > 0.95 was selected as the index to screen targeting relationships among different RNAs. Cytoscape was used to construct a network diagram. The expression of 2547 lncRNAs was changed during the wound healing process-1479 were upregulated and 1068 were downregulated. After analyzing competitive endogenous RNA network, 4 upregulated (MEG8, MEG3, MIR181A1HG, MIR4435-2HG) lncRNAs were found expressed during wound healing. MEG8/MEG3 may regulate fibroblast proliferation, differentiation, and apoptosis through hsa-miR-296-3p/miR-6763-5p. In-depth mining of gene expression matrix data indicated that lncRNAs and a competitive endogenous RNA regulatory network participate in the wound healing process, possibly providing novel intervention targets and treatment options for delayed wound healing.
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Zhao R, Sa X, Ouyang N, Zhang H, Yang J, Pan J, Gu J, Zhou Y. A Pan-Cancer Analysis of Transcriptome and Survival Reveals Prognostic Differentially Expressed LncRNAs and Predicts Novel Drugs for Glioblastoma Multiforme Therapy. Front Genet 2021; 12:723725. [PMID: 34759954 PMCID: PMC8575119 DOI: 10.3389/fgene.2021.723725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Accepted: 07/23/2021] [Indexed: 11/13/2022] Open
Abstract
Numerous studies have identified various prognostic long non-coding RNAs (LncRNAs) in a specific cancer type, but a comprehensive pan-cancer analysis for prediction of LncRNAs that may serve as prognostic biomarkers is of great significance to be performed. Glioblastoma multiforme (GBM) is the most common and aggressive malignant adult primary brain tumor. There is an urgent need to identify novel therapies for GBM due to its poor prognosis and universal recurrence. Using available LncRNA expression data of 12 cancer types and survival data of 30 cancer types from online databases, we identified 48 differentially expressed LncRNAs in cancers as potential pan-cancer prognostic biomarkers. Two candidate LncRNAs were selected for validation in GBM. By the expression detection in GBM cell lines and survival analysis in GBM patients, we demonstrated the reliability of the list of pan-cancer prognostic LncRNAs obtained above. By constructing LncRNA-mRNA-drug network in GBM, we predicted novel drug-target interactions for GBM correlated LncRNA. This analysis has revealed common prognostic LncRNAs among cancers, which may provide insights into cancer pathogenesis and novel drug target in GBM.
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Affiliation(s)
- Rongchuan Zhao
- Division of Life Sciences and Medicine, School of Biomedical Engineering (Suzhou), University of Science and Technology of China, Heifei, China.,Jiangsu Key Laboratory of Medical Optics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, China
| | - Xiaohan Sa
- Division of Life Sciences and Medicine, School of Biomedical Engineering (Suzhou), University of Science and Technology of China, Heifei, China.,Jiangsu Key Laboratory of Medical Optics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, China
| | - Nan Ouyang
- Division of Life Sciences and Medicine, School of Biomedical Engineering (Suzhou), University of Science and Technology of China, Heifei, China.,Jiangsu Key Laboratory of Medical Optics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, China
| | - Hong Zhang
- School of Life Sciences, Shanghai University, Shanghai, China
| | - Jiao Yang
- Jiangsu Key Laboratory of Medical Optics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, China
| | - Jinlin Pan
- Division of Life Sciences and Medicine, School of Biomedical Engineering (Suzhou), University of Science and Technology of China, Heifei, China.,Jiangsu Key Laboratory of Medical Optics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, China
| | - Jinhui Gu
- Department of Anorectum, Suzhou Hospital of Traditional Chinese Medicine, Suzhou, China
| | - Yuanshuai Zhou
- Jiangsu Key Laboratory of Medical Optics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, China
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10
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Gao LF, Li W, Liu YG, Zhang C, Gao WN, Wang L. Inhibition of MIR4435-2HG on Invasion, Migration, and EMT of Gastric Carcinoma Cells by Mediating MiR-138-5p/Sox4 Axis. Front Oncol 2021; 11:661288. [PMID: 34532282 PMCID: PMC8438303 DOI: 10.3389/fonc.2021.661288] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Accepted: 07/19/2021] [Indexed: 12/24/2022] Open
Abstract
Background The previous investigations have identified that long non-coding RNA (lncRNAs) act as crucial regulators in gastric carcinoma. However, the function of lncRNA MIR4435-2HG in the modulation of gastric carcinoma remains elusive. Here, we aimed to explore the role of MIR4435-2HG in gastric carcinoma. Method The Cancer Genome Atlas (TCGA) and Gene Expression Omnibus (GEO) were applied to select the differently expressed lncRNAs in gastric carcinoma. The qRT-PCR was applied to analyze MIR4435-2HG expression in carcinoma tissues and cell lines. The effect of MIR4435-2HG on proliferation, invasion, migration, and apoptosis of gastric carcinoma cells was detected by Cell Counting Kit-8 (CCK-8) assays, transwell assays, and flow cytometry in vitro. A subcutaneous tumor model was constructed to examine the tumor growth of gastric carcinoma cells after knocking out MIR4435-2HG. RNA immunoprecipitation and luciferase reporting assays were applied to evaluate the interaction of MIR4435-2HG, miR-138-5p, and Sox4. Results The bioinformatics analysis based on TCGA and GEO databases indicated that MIR4435-2HG was obviously elevated in gastric carcinoma samples. The qRT-PCR analysis revealed that MIR4435-2HG was upregulated in clinical gastric carcinoma tissues and cells. The high expression of MIR4435-2HG is associated with the poor survival rate of patients. The knockout of MIR4435-2HG could repress the proliferation, invasion, migration, and epithelial–mesenchymal transition (EMT) and accelerate the apoptosis of gastric carcinoma cells. Moreover, the deletion of MIR4435-2HG was able to attenuate the tumor growth in vivo. Mechanically, we identified that MIR4435-2HG enhanced Sox4 expression by directly interacting with miR-138-5p as a competitive endogenous RNA (ceRNA) in gastric carcinoma cells, in which Sox4 was targeted by miR-138-5p. Conclusion MIR4435-2HG is elevated in gastric carcinoma cells and contributes to the growth, metastasis, and EMT of gastric carcinoma cells by targeting miR-138-5p/Sox4 axis. MIR4435-2HG may be applied as a potential therapeutic target in gastric carcinoma.
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Affiliation(s)
- Li-Fei Gao
- The Third Department of General Surgery, Cangzhou Central Hospital, Cangzhou, China
| | - Wei Li
- The Second Department of General Surgery, Cangzhou Central Hospital, Cangzhou, China
| | - Ya-Gang Liu
- The Second Department of General Surgery, Cangzhou Central Hospital, Cangzhou, China
| | - Cui Zhang
- The Second Department of General Surgery, Cangzhou Central Hospital, Cangzhou, China
| | - Wei-Na Gao
- The Fourth Department of Endocrinology, Cangzhou Central Hospital, Cangzhou, China
| | - Liang Wang
- The Second Department of General Surgery, Cangzhou Central Hospital, Cangzhou, China
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Ghasemi T, Khalaj-Kondori M, Hosseinpour Feizi MA, Asadi P. Aberrant expression of lncRNAs SNHG6, TRPM2-AS1, MIR4435-2HG, and hypomethylation of TRPM2-AS1 promoter in colorectal cancer. Cell Biol Int 2021; 45:2464-2478. [PMID: 34431156 DOI: 10.1002/cbin.11692] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 08/08/2021] [Accepted: 08/22/2021] [Indexed: 01/30/2023]
Abstract
Accumulating evidence has indicated that deregulation of lncRNAs plays essential roles in colorectal cancer (CRC) carcinogenesis. The goal of this study was to analyze the expression of lncRNAs in colorectal cancer and their association with clinicopathological variables. Bioinformatics analysis of published CRC microarray data was performed to identify the important lncRNAs. The expression levels of candidate genes were assessed in the human colon cancer/normal cell lines, CRC, adenomatous colorectal polyps, and their marginal tissues by qRT-PCR. Moreover, the methylation status of the TRPM2-AS1 promoter was studied using qMSP assay. Furthermore, we investigated the molecular mechanisms of these lncRNAs in CRC progression using in silico analysis. Microarray analysis revealed that lncRNAs SNHG6, MIR4435-2HG, and TRPM2-AS1 were upregulated in CRC. These results were validated in colon cell lines. Moreover, qRT-PCR showed that the expression levels of SNHG6 and TRPM2-AS1 were upregulated in the colorectal tumor tissues compared with their paired tissues. Nonetheless, there was no significant increase in MIR4435-2HG expression in CRC samples. Furthermore, we observed a significant hypomethylation of TRPM2-AS1 promoter and its activation in CRC tissues. By in silico analysis, we found that the lncRNAs upregulation could promote proliferation and drug resistance of colorectal cancer cells via miRNAs sponging and modulation of their targets expression. In conclusion, based on our results upregulation of SNHG6 and TRPM2-AS1, and hypomethylation of TRPM2-AS1 promoter might be considered as potential diagnostic biomarkers for CRC initiation and development.
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Affiliation(s)
- Tayyebeh Ghasemi
- Department of Animal Biology, Faculty of Natural Sciences, University of Tabriz, Tabriz, Iran
| | - Mohammad Khalaj-Kondori
- Department of Animal Biology, Faculty of Natural Sciences, University of Tabriz, Tabriz, Iran
| | | | - Parviz Asadi
- Medical Science Division, Imam Sajjad Hospital, Islamic Azad University, Tabriz, Iran
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12
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Long noncoding RNA LINC00978 acts as a potential diagnostic biomarker in patients with colorectal cancer. Exp Mol Pathol 2021; 122:104666. [PMID: 34273360 DOI: 10.1016/j.yexmp.2021.104666] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Revised: 05/14/2021] [Accepted: 07/07/2021] [Indexed: 11/22/2022]
Abstract
Colorectal cancer (CRC) as a lethal malignancy has been associated with dysregulation of several genes and pathways. Long noncoding RNAs (lncRNAs) play an important role in gene expression regulation. In the current research, we aim to evaluate the expression of LINC00978 in CRC samples and adjacent tissues. Using Quantitative Real-Time PCR (qRT-PCR) method, we assessed the expression levels of LINC00978 and β-catenin in 70 pairs of CRC and adjacent tissues. Moreover, the association between clinicopathological features and the LINC00978 expression levels was investigated. To assess the diagnostic power of LINC00978 expression in CRC, receiver operating characteristic (ROC) curve was plotted. The relationship between LINC00978 and β-catenin expression levels was evaluated using correlation analysis. A markedly increased level of LINC00978 and β-catenin expression levels was observed in CRC samples compared with adjacent tissues (P < 0.0001). No significant association was detected between LINC00978 expression level and the patient's clinicopathological features. The results of Pearson's correlation coefficient highlighted a positive correlation between LINC00978 and β-catenin expression (r2 = 0.4695, P < 0.0001). According to the area under curve (AUC) value, LINC00978 expression differentiates CRC samples from the adjacent tissues (AUC = 0.81, P < 0.0001). The present results suggest that LINC00978 may play a critical role in CRC progression via Wnt pathway. The potential role of LINC00978 as a diagnostic biomarker needs to be further investigated in future studies.
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13
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LncRNA AWPPH as a prognostic predictor in human cancers in Chinese population: evidence from meta-analysis. Biosci Rep 2021; 41:228775. [PMID: 34042153 PMCID: PMC8188174 DOI: 10.1042/bsr20210012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 05/19/2021] [Accepted: 05/24/2021] [Indexed: 11/23/2022] Open
Abstract
Background: Long non-coding RNA associated with poor prognosis of hepatocellular carcinoma (AWPPH) is dysregulated in a variety of human cancers. However, the prognostic value of AWPPH in various cancers remains unclear. Methods: Comprehensive literature search was performed in PubMed, Web of Science, CNKI and Wangfang databases, and eligible studies were obtained according to the inclusion and exclusion criteria. The pooled hazard ratios (HRs) and odds ratios (ORs) were applied to assess the clinical value of AWPPH expression for overall survival (OS) and clinicopathological features. Results: A total of 19 articles including 1699 cancer patients were included in the study. The pooled results demonstrated that evaluated AWPPH expression was positively related to a poorer overall survival of patients with cancers (HR = 1.79, 95%CI: 1.44–2.14, P<0.001). Subgroup analysis revealed that tumor type and sample size affect the predictive value of AWPPH on OS, whereas cut-off value and HR estimation method have no impact on it. In addition, the pooled data also showed that AWPPH was positively linked to advanced TNM stage (OR = 2.50, 95%CI: 1.94–3.22, P<0.001), bigger tumor size (OR = 2.64, 95%CI: 1.47–4.73, P=0.001), macro-vascular invasion (OR = 2.08, 95%CI: 1.04–4.16, P=0.04) and lymph node metastasis (OR = 2.68, 95%CI: 1.82–3.96, P<0.001). Moreover, the results of the trim and fill analysis confirmed the reliability of our finding. Conclusions: Up-regulation of AWPPH was associated with advanced TNM stage, bigger tumor size, worse lymph node metastasis, macro-vascular invasion and shorter overall survival, suggesting that AWPPH may serve as a biomarker for prognosis and clinicopathological characteristics in human cancers among the Chinese population.
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14
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Guo D, Liu F, Zhang L, Bian N, Liu L, Kong L, Hu Q, Wang Z. Long non-coding RNA AWPPH enhances malignant phenotypes in nasopharyngeal carcinoma via silencing PTEN through interacting with LSD1 and EZH2. Biochem Cell Biol 2021; 99:195-202. [PMID: 32663416 DOI: 10.1139/bcb-2019-0497] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Evidence has emerged identifying long noncoding RNAs (lncRNAs) as important regulators of various cancers including nasopharyngeal carcinoma (NPC). LncRNA AWPPH is an oncogene recently identified in several cancers. However, the underlying role of AWPPH in NPC is still unclear and thus worth exploring. In this study, AWPPH expression was markedly upregulated in NPC cells. Further, loss- and gain-of-function assays indicated that AWPPH facilitates cell proliferation and migration and hinders apoptosis in NPC cells. Moreover, cytoplasmic AWPPH was predicted to share a common RNA-binding protein, IGF2BP1, with LSD1. The interaction between IGF2BP1 and both AWPPH and LSD1 mRNA was verified in NPC cells, and AWPPH stabilized LSD1 mRNA to enhance the expression of LSD1 in NPC through such interactions. Furthermore, nuclear AWPPH repressed PTEN expression through recruiting EZH2 and LSD1 to the PTEN promoter in NPC cells. Final rescue assays demonstrated that silenced PTEN could reverse the suppressive influence of AWPPH depletion on the progression of NPC. Collectively, our study shows that AWPPH inhibits PTEN expression to drive NPC progression through interacting with LSD1 and EZH2, providing potential biomarkers for NPC treatment.
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Affiliation(s)
- Deqiang Guo
- People’s Liberation Army Hospital, 960 Yuan District, 20 Zhanbei Road, Zhoucun District, Zibo, 255300, Shandong, P.R. China
- People’s Liberation Army Hospital, 960 Yuan District, 20 Zhanbei Road, Zhoucun District, Zibo, 255300, Shandong, P.R. China
| | - Fei Liu
- People’s Liberation Army Hospital, 960 Yuan District, 20 Zhanbei Road, Zhoucun District, Zibo, 255300, Shandong, P.R. China
- People’s Liberation Army Hospital, 960 Yuan District, 20 Zhanbei Road, Zhoucun District, Zibo, 255300, Shandong, P.R. China
| | - Lei Zhang
- People’s Liberation Army Hospital, 960 Yuan District, 20 Zhanbei Road, Zhoucun District, Zibo, 255300, Shandong, P.R. China
- People’s Liberation Army Hospital, 960 Yuan District, 20 Zhanbei Road, Zhoucun District, Zibo, 255300, Shandong, P.R. China
| | - Nana Bian
- People’s Liberation Army Hospital, 960 Yuan District, 20 Zhanbei Road, Zhoucun District, Zibo, 255300, Shandong, P.R. China
- People’s Liberation Army Hospital, 960 Yuan District, 20 Zhanbei Road, Zhoucun District, Zibo, 255300, Shandong, P.R. China
| | - Luyang Liu
- People’s Liberation Army Hospital, 960 Yuan District, 20 Zhanbei Road, Zhoucun District, Zibo, 255300, Shandong, P.R. China
- People’s Liberation Army Hospital, 960 Yuan District, 20 Zhanbei Road, Zhoucun District, Zibo, 255300, Shandong, P.R. China
| | - Lingxiao Kong
- People’s Liberation Army Hospital, 960 Yuan District, 20 Zhanbei Road, Zhoucun District, Zibo, 255300, Shandong, P.R. China
- People’s Liberation Army Hospital, 960 Yuan District, 20 Zhanbei Road, Zhoucun District, Zibo, 255300, Shandong, P.R. China
| | - Qian Hu
- People’s Liberation Army Hospital, 960 Yuan District, 20 Zhanbei Road, Zhoucun District, Zibo, 255300, Shandong, P.R. China
- People’s Liberation Army Hospital, 960 Yuan District, 20 Zhanbei Road, Zhoucun District, Zibo, 255300, Shandong, P.R. China
| | - Zengguang Wang
- People’s Liberation Army Hospital, 960 Yuan District, 20 Zhanbei Road, Zhoucun District, Zibo, 255300, Shandong, P.R. China
- People’s Liberation Army Hospital, 960 Yuan District, 20 Zhanbei Road, Zhoucun District, Zibo, 255300, Shandong, P.R. China
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15
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LINC00978 promotes hepatocellular carcinoma carcinogenesis partly via activating the MAPK/ERK pathway. Biosci Rep 2021; 40:222177. [PMID: 32077915 PMCID: PMC7064789 DOI: 10.1042/bsr20192790] [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: 08/09/2019] [Revised: 11/20/2019] [Accepted: 12/23/2019] [Indexed: 02/07/2023] Open
Abstract
Objective: To study the role of long non-coding RNA (lncRNA) LINC00978 in hepatocellular carcinoma (HCC) carcinogenesis. Materials and methods: LINC00978 expression level was measured by reverse transcription quantitative real-time PCR (RT-qPCR) in HCC tissues and adjacent healthy liver tissues from 49 HCC patients. MTT assay, colony forming assay, and flow cytometry were performed to evaluate the effects of shRNA-mediated LINC00978 knockdown on HCC cell proliferation, cell cycle progression, and apoptosis in vitro. Xenograft tumor model was performed to determine the effects of LINC00978 knockdown on HCC tumor growth in vivo. Western blot was used to assess the activation of signaling molecules in the apoptosis and mitogen-activated protein kinase (MAPK)/extracellular signal-regulated kinase (ERK) pathway. Results: LINC00978 expression was significantly up-regulated in human HCC tissue relative to adjacent normal tissue, and LINC00978 high expression was correlated with poor HCC overall survival. LINC00978 was up-regulated in HCC cell lines. ShRNA-mediated LINC00978 knockdown significantly decreased HCC cell proliferation, and induced HCC cell cycle arrest and apoptosis in vitro. LINC00978 knockdown led to significant decrease in tumor xenograft size in vivo. Western blots revealed LINC00978 inhibition decreased ERK, p38, and c-Jun N-terminal kinase (JNK) phosphorylation in HCC cells. Conclusions: LINC00978 is highly expressed in human HCC tissue and correlates with poor HCC prognosis. LINC00978 promotes HCC cell proliferation, cell cycle progression, and survival, partially by activating the MAPK/ERK pathway. Our findings partially elucidated the roles of LINC00978 in HCC carcinogenesis, and identified a therapeutic target for HCC.
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16
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Downregulation of long non-coding RNA MR4435-2HG suppresses breast cancer progression via the Wnt/β-catenin signaling pathway. Oncol Lett 2021; 21:373. [PMID: 33777197 PMCID: PMC7988707 DOI: 10.3892/ol.2021.12634] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Accepted: 02/09/2021] [Indexed: 01/17/2023] Open
Abstract
Extensive research has contributed to the current understanding of the critical roles played by long non-coding RNAs in various types of cancer. The present study aimed to investigate the function and mechanism of the long non-coding RNA, MIR4435-2HG (also termed LINC00978), in breast cancer growth and metastasis. Using Gene Expression Profiling Interactive Analysis, an online web tool, it was revealed that MIR4435-2HG was upregulated in breast cancer tissue, and its high expression was associated with poor prognosis based on The Cancer Genome Atlas database. MIR4435-2HG knockdown increased cell apoptosis but decreased cell proliferation, migration and invasion. MIR4435-2HG knockdown increased pro-apoptotic protein expression but decreased anti-apoptotic protein expression. In addition, MIR4435-2HG knockdown leads to dysregulation of epithelial-to-mesenchymal transition-associated genes. Furthermore, knockdown of MIR4435-2HG results in inactivation of the Wnt/β-catenin signaling pathway. The results of the present study demonstrate the tumor-promoting role of MIR4435-2HG in breast cancer progression.
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17
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Dutta A, Roy A, Chatterjee S. Long noncoding RNAs in cancer immunity: a new avenue in drug discovery. Drug Discov Today 2020; 26:264-272. [PMID: 32827755 DOI: 10.1016/j.drudis.2020.07.026] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Revised: 06/18/2020] [Accepted: 07/22/2020] [Indexed: 12/23/2022]
Abstract
The central role of the nonprotein-coding portion of the genome, such as long noncoding (lnc)RNAs is emerging as a hidden player manipulating the immune system in cancer. lncRNAs, in association with their interacting partners, regulate the expression of various immune system genes, which are perturbed during cancer. The tissue-specific expression of lncRNAs and their importance in cellular proliferation, the tumor microenvironment (TME), epithelial-mesenchymal transition (EMT), and modulation of the cells of the innate and adaptive immune system have novel therapeutic implications in establishing lncRNAs as biomarkers and targets to overcome cancer-associated immunosuppression. In this review, we establish and strengthen the link between lncRNAs and cancer immunity.
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Affiliation(s)
- Anindya Dutta
- Department of Biophysics, Bose Institute, P-1/12, CIT Scheme VIIM, Kankurgachi, Kolkata 700054, West Bengal, India
| | - Ananya Roy
- Department of Biophysics, Bose Institute, P-1/12, CIT Scheme VIIM, Kankurgachi, Kolkata 700054, West Bengal, India
| | - Subhrangsu Chatterjee
- Department of Biophysics, Bose Institute, P-1/12, CIT Scheme VIIM, Kankurgachi, Kolkata 700054, West Bengal, India.
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18
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Zhang Q, Jin X, Shi W, Chen X, Pang W, Yu X, Yang L. A long non-coding RNA LINC00461-dependent mechanism underlying breast cancer invasion and migration via the miR-144-3p/KPNA2 axis. Cancer Cell Int 2020; 20:137. [PMID: 32355466 PMCID: PMC7184707 DOI: 10.1186/s12935-020-01221-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Accepted: 04/17/2020] [Indexed: 12/11/2022] Open
Abstract
Background The purpose of this study was to explore the regulatory mechanism of the long non-coding RNA (lncRNA) LINC00461 underlying the breast cancer invasion and migration via the miR-144-3p/KPNA2 axis. Methods Bioinformatics methods were applied to screen differentially expressed mRNAs, miRNAs and lncRNAs for construction of a competing endogenous RNA (ceRNA) network. LINC00461, KPNA2 and miR-144-3p were identified, and KPNA2 was predicted to be a target of miR-144-3p and significantly correlated with breast cancer prognosis. To make the findings more convincible, we used qRT-PCR to detect the expression levels of LINC00461 and miR-144-3p in breast cancer cells, and conducted western blot to determine KPNA2 protein level. Then, RIP was performed to assess the combination between miR-144-3p and LINC00461 or KPNA2, and dual-luciferase reporter assay was used to validate the targeted relationship between miR-144-3p and KPNA2. Furthermore, Transwell was employed for the examination of cell invasion and migration in breast cancer. Results LINC00461 was predicted to regulate KPNA2 through sponging miR-144-3p as revealed by the ceRNA network. Besides, LINC00461 and KPNA2 were found to be remarkably highly-expressed in breast cancer cells, while miR-144-3p was poorly-expressed. Silencing LINC00461 could promote miR-144-3p expression, thus inhibiting cell invasion and migration. In addition, KPNA2 was confirmed to be a direct target of miR-144-3p. Silencing miR-144-3p or overexpressing KPNA2 could reverse the inhibitory effect of LINC00461 silencing on cell invasion and migration in breast cancer. Conclusion LINC00461 promoted the expression of KPNA2 by competitively binding to miR-144-3p, thereby promoting the invasion and migration of breast cancer cells.
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Affiliation(s)
- Qiang Zhang
- Department of Breast Central, Taizhou Municipal Hospital, No.138 Zhongshan Road, Taizhou, 318000 Zhejiang China
| | - Xiaoyan Jin
- Department of Breast Central, Taizhou Municipal Hospital, No.138 Zhongshan Road, Taizhou, 318000 Zhejiang China
| | - Wenbiao Shi
- Department of Breast Central, Taizhou Municipal Hospital, No.138 Zhongshan Road, Taizhou, 318000 Zhejiang China
| | - Xin Chen
- Department of Breast Central, Taizhou Municipal Hospital, No.138 Zhongshan Road, Taizhou, 318000 Zhejiang China
| | - Wenyang Pang
- Department of Breast Central, Taizhou Municipal Hospital, No.138 Zhongshan Road, Taizhou, 318000 Zhejiang China
| | - Xiaodong Yu
- Department of Breast Central, Taizhou Municipal Hospital, No.138 Zhongshan Road, Taizhou, 318000 Zhejiang China
| | - Linjun Yang
- Department of Breast Central, Taizhou Municipal Hospital, No.138 Zhongshan Road, Taizhou, 318000 Zhejiang China
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19
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Zhang S, Li C, Liu J, Geng F, Shi X, Li Q, Lu Z, Pan Y. Fusobacterium nucleatum promotes epithelial-mesenchymal transiton through regulation of the lncRNA MIR4435-2HG/miR-296-5p/Akt2/SNAI1 signaling pathway. FEBS J 2020; 287:4032-4047. [PMID: 31997506 PMCID: PMC7540502 DOI: 10.1111/febs.15233] [Citation(s) in RCA: 82] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 01/03/2020] [Accepted: 01/27/2020] [Indexed: 12/23/2022]
Abstract
Fusobacterium nucleatum, an anaerobic oral opportunistic pathogen associated with periodontitis, has been considered to be associated with the development of oral squamous cell carcinoma (OSCC). However, the initial host molecular alterations induced by F. nucleatum infection which may promote predisposition to malignant transformation through epithelial–mesenchymal transition (EMT) have not yet been clarified. In the present study, we monitored the ability of F. nucleatum to induce EMT‐associated features, and our results showed that F. nucleatum infection promoted cell migration in either noncancerous human immortalized oral epithelial cells (HIOECs) or the two OSCC cell lines SCC‐9 and HSC‐4, but did not accelerate cell proliferation or cell cycle progression. Mesenchymal markers, including N‐cadherin, Vimentin, and SNAI1, were upregulated, while E‐cadherin was decreased and was observed to translocate to the cytoplasm. Furthermore, FadA adhesin and heat‐inactivated F. nucleatum were found to cause a similar effect as the viable bacterial cells. The upregulated lncRNA MIR4435‐2HG identified by the high‐throughput sequencing was demonstrated to negatively regulate the expression of miR‐296‐5p, which was downregulated in F. nucleatum‐infected HIOECs and SCC‐9 cells. The binding of MIR4435‐2HG and miR‐296‐5p was validated via a dual‐luciferase reporter assay. Additionally, knockdown of MIR4435‐2HG with siRNA leads to a decrease in SNAI1 expression, while miR‐296‐5p could further negatively and indirectly regulate SNAI1 expression via Akt2. Therefore, our study demonstrated that F. nucleatum infection could trigger EMT via lncRNA MIR4435‐2HG/miR‐296‐5p/Akt2/SNAI1 signaling pathway, and EMT process may be a probable link between F. nucleatum infection and initiation of oral epithelial carcinomas.
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Affiliation(s)
- Shuwei Zhang
- Department of Periodontics, School and Hospital of Stomatology, China Medical University, Shenyang, China
| | - Chen Li
- Department of Periodontics, School and Hospital of Stomatology, China Medical University, Shenyang, China.,Liaoning Provincial Key Laboratory of Oral Diseases, School and Hospital of Stomatology, China Medical University, Shenyang, China
| | - Junchao Liu
- Department of Periodontics, School and Hospital of Stomatology, China Medical University, Shenyang, China
| | - Fengxue Geng
- Department of Periodontics, School and Hospital of Stomatology, China Medical University, Shenyang, China
| | - Xiaoting Shi
- Department of Periodontics, School and Hospital of Stomatology, China Medical University, Shenyang, China
| | - Qian Li
- Liaoning Provincial Key Laboratory of Oral Diseases, School and Hospital of Stomatology, China Medical University, Shenyang, China
| | - Ze Lu
- Department of Periodontics, School and Hospital of Stomatology, China Medical University, Shenyang, China
| | - Yaping Pan
- Department of Periodontics, School and Hospital of Stomatology, China Medical University, Shenyang, China.,Liaoning Provincial Key Laboratory of Oral Diseases, School and Hospital of Stomatology, China Medical University, Shenyang, China
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20
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Liu H, Sun Y, Tian H, Xiao X, Zhang J, Wang Y, Yu F. Characterization of long non-coding RNA and messenger RNA profiles in laryngeal cancer by weighted gene co-expression network analysis. Aging (Albany NY) 2019; 11:10074-10099. [PMID: 31739287 PMCID: PMC6914418 DOI: 10.18632/aging.102419] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2019] [Accepted: 10/28/2019] [Indexed: 02/07/2023]
Abstract
Laryngeal cancer (LC) is a malignant tumor in the head and neck region. It was recently elucidated that long non-coding RNAs (lncRNAs) participate in the pathogenesis of LC. However, the detailed mechanism of lncRNA in LC and whether long non-coding RNAs serve as effective biomarkers remains unclear. Ribonucleic acid (RNA) sequence data of LC and 11 patient clinical traits were extracted from The Cancer Genome Atlas (TCGA) database and analyzed by weighted gene co-expression network analysis (WGCNA). A total of 9 co-expression modules were identified. The co-expression Pink module significantly correlated with four clinical traits, including history of smoking, lymph node count, tumor status, and the success of follow-up treatment. Based on the co-expression Pink module, lncRNA-microRNA (miRNA)-messenger RNA (mRNA) and lncRNA-RNA binding protein-mRNA networks were constructed. We found that 8 lncRNAs significantly impacted overall survival (OS) in LC patients. These identified lncRNA and hub gene biomarkers were also validated in multiple LC cells in vitro via qPCR. Taken together, this study provided the framework of co-expression gene modules of LC and identified some important biomarkers in LC development and disease progression.
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Affiliation(s)
- Huanhuan Liu
- Department of Plastic Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China.,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Yi Sun
- Department of Breast Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China.,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Huan Tian
- Department of Breast Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China.,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Xiaolian Xiao
- Department of Plastic Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Jiaqi Zhang
- Department of Plastic Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Yongzhen Wang
- Department of Plastic Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Fengyan Yu
- Department of Breast Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China.,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
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21
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Xu X, Gu J, Ding X, Ge G, Zang X, Ji R, Shao M, Mao Z, Zhang Y, Zhang J, Mao F, Qian H, Xu W, Cai H, Wang F, Zhang X. LINC00978 promotes the progression of hepatocellular carcinoma by regulating EZH2-mediated silencing of p21 and E-cadherin expression. Cell Death Dis 2019; 10:752. [PMID: 31582742 PMCID: PMC6776555 DOI: 10.1038/s41419-019-1990-6] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2019] [Revised: 09/12/2019] [Accepted: 09/17/2019] [Indexed: 01/15/2023]
Abstract
Long non-coding RNAs (lncRNAs) have been suggested as important regulators of cancer development and progression in hepatocellular carcinoma (HCC). Nevertheless, the clinical value and biological roles of LINC00978 in HCC remain unclear. In this study, we detected the expression of LINC00978 in tumor tissues and serum of HCC patients, examined the roles of LINC00978 in HCC progression and elucidated the underlying molecular mechanisms. We found that LINC00978 expression was upregulated in tumor tissues and serum of HCC patients. Higher serum levels of LINC00978 could distinguish HCC patients from hepatitis and liver cirrhosis patients and healthy controls. LINC00978 knockdown inhibited HCC cell proliferation, migration and invasion while promoted cell cycle arrest and apoptosis. Overexpression of LINC00978 led to the opposite effects. LINC00978 knockdown also inhibited HCC growth and metastasis in mouse tumor models. Mechanistically, LINC00978 bound to EZH2 and mediated its accumulation at the promoter region of p21 and E-cadherin genes, leading to the trimethylation of H27K3 and the inhibition of p21 and E-cadherin expression. Moreover, the simultaneous depletion of p21 and E-cadherin expression reversed the inhibitory effects of LINC00978 knockdown on HCC cell proliferation, migration, and invasion. Taken together, these findings suggest that LINC00978 promotes HCC progression by inhibiting p21 and E-cadherin expression via EZH2-mediated epigenetic silencing. LINC00978 may represent a novel biomarker for HCC diagnosis, prognosis, and therapy.
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Affiliation(s)
- Xueying Xu
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu, 212013, China
| | - Jianmei Gu
- Departmemt of Clinical Laboratory Medicine, Nantong Tumor Hospital, 30 Tongyang North Road, Nantong, Jiangsu, 226361, China
| | - Xiaoge Ding
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu, 212013, China
| | - Guohong Ge
- Liver Disease and Cancer Institute, The Affiliated Zhenjiang Third Hospital of Jiangsu University, 300 Daijiamen Road, Zhenjiang, Jiangsu, 212021, China
| | - Xueyan Zang
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu, 212013, China
| | - Runbi Ji
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu, 212013, China
| | - Meng Shao
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu, 212013, China
| | - Zheying Mao
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu, 212013, China
| | - Yu Zhang
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu, 212013, China
| | - Jiayin Zhang
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu, 212013, China
| | - Fei Mao
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu, 212013, China
| | - Hui Qian
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu, 212013, China
| | - Wenrong Xu
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu, 212013, China
| | - Hui Cai
- Key Laboratory of Molecular Diagnostics and Precision Medicine for Surgical Oncology in Gansu Province, Gansu Provincial Hospital, 24 West Donggang Road, Gansu, 730000, China.
| | - Feng Wang
- Departmemt of Clinical Laboratory Medicine, Affiliated Hospital of Nantong University, 20 Xisi Road, Nantong, Jiangsu, 226001, China.
| | - Xu Zhang
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu, 212013, China. .,Key Laboratory of Molecular Diagnostics and Precision Medicine for Surgical Oncology in Gansu Province, Gansu Provincial Hospital, 24 West Donggang Road, Gansu, 730000, China.
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22
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LncRNA MIR4435-2HG targets desmoplakin and promotes growth and metastasis of gastric cancer by activating Wnt/β-catenin signaling. Aging (Albany NY) 2019; 11:6657-6673. [PMID: 31484163 PMCID: PMC6756883 DOI: 10.18632/aging.102164] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Accepted: 08/05/2019] [Indexed: 12/31/2022]
Abstract
Long non-coding RNAs (lncRNAs) have been implicated in the pathogenesis of gastric cancer; however, their mechanisms of action remain largely unknown. The aim of this study was to identify lncRNAs involved in the tumorigenesis of gastric cancer and to investigate the signaling pathways they affect. Using microarray and RT-qPCR analyses, candidate lncRNAs were screened in paired gastric cancer tissues. The analysis revealed MIR4435-2HG to be markedly up-regulated in gastric cancer samples compared to normal stomach specimens. Increased MIR4435-2HG expression was associated with aggressive clinicopathologic features and unfavorable tumor stage. Functional experiments showed that MIR4435-2HG up-regulation enhanced gastric cancer cell proliferation, clonogenicity, and migration and invasion in vitro, as well as tumorigenicity in mice. Using RNA pull-down and mass-spectrometry analyses we found and verified a direct and novel interaction between MIR4435-2HG and desmoplakin (DSP), the most abundant desmosomal protein. Overexpression and knockdown experiments revealed opposing roles for DSP and MIR4435-2HG, unmasking a cascade through which MIR4435-2HG binds to and inhibits DSP, leading to activation of WNT/β-catenin signaling and epithelial-mesenchymal transition in gastric cancer cells. We propose that the MIR4435-2HG/DSP/WNT axis serves as a critical effector of carcinogenesis and progression of gastric cancer, and could be exploited therapeutically to improve patients' outcomes.
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23
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Wang W, Xu Z, Wang J, Chen R. LINC00978 promotes bladder cancer cell proliferation, migration and invasion by sponging miR‑4288. Mol Med Rep 2019; 20:1866-1872. [PMID: 31257499 DOI: 10.3892/mmr.2019.10395] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Accepted: 11/09/2018] [Indexed: 11/06/2022] Open
Abstract
Long noncoding RNAs regulate the occurrence and progression of numerous types of cancer, including bladder cancer (BCa). However, the role of long intergenic non‑protein coding RNA 978 (LINC00978) in BCa remains unknown. In the present study, it was identified that the LINC00978 expression level was significantly increased in BCa tissues compared with adjacent normal tissues. By performing cell proliferation, colony formation, Transwell and Matrigel assays, it was demonstrated that LINC00978 knockdown significantly inhibited the proliferation, migration and invasion of BCa cells. Conversely, overexpression of LINC00978 resulted in opposite effects. Mechanistically, it was demonstrated that LINC00978 served as a competing endogenous RNA to sponge microRNA‑4288 (miR‑4288), and LINC00978 knockdown significantly increased the expression level of miR‑4288 in BCa cells. Furthermore, it was demonstrated that the expression of LINC00978 was inversely correlated with the miR‑4288 expression level in BCa tissues. Furthermore, by performing a rescue assay, it was identified that inhibition of miR‑4288 was able to reverse the effects of LINC00978 knockdown on proliferation, migration and invasion of BCa cells. Collectively, the present study demonstrated that LINC00978 promoted BCa progression by sponging miR‑4288, suggesting that LINC00978 may represent a potential therapeutic target for BCa treatment.
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Affiliation(s)
- Wei Wang
- Department of Urinary Surgery, Tiantai People's Hospital of Zhejiang Province, Taizhou, Zhejiang 317200, P.R. China
| | - Zhihui Xu
- Department of Urinary Surgery, Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang 310014, P.R. China
| | - Jiye Wang
- Department of Urinary Surgery, Tiantai People's Hospital of Zhejiang Province, Taizhou, Zhejiang 317200, P.R. China
| | - Renzong Chen
- Department of Urinary Surgery, Tiantai People's Hospital of Zhejiang Province, Taizhou, Zhejiang 317200, P.R. China
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24
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Saghafi T, Taheri RA, Parkkila S, Emameh RZ. Phytochemicals as Modulators of Long Non-Coding RNAs and Inhibitors of Cancer-Related Carbonic Anhydrases. Int J Mol Sci 2019; 20:E2939. [PMID: 31208095 PMCID: PMC6627131 DOI: 10.3390/ijms20122939] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 05/29/2019] [Accepted: 05/30/2019] [Indexed: 01/17/2023] Open
Abstract
Long non-coding RNAs (lncRNAs) are classified as a group of transcripts which regulate various biological processes, such as RNA processing, epigenetic control, and signaling pathways. According to recent studies, lncRNAs are dysregulated in cancer and play an important role in cancer incidence and spreading. There is also an association between lncRNAs and the overexpression of some tumor-associated proteins, including carbonic anhydrases II, IX, and XII (CA II, CA IX, and CA XII). Therefore, not only CA inhibition, but also lncRNA modulation, could represent an attractive strategy for cancer prevention and therapy. Experimental studies have suggested that herbal compounds regulate the expression of many lncRNAs involved in cancer, such as HOTAIR (HOX transcript antisense RNA), H19, MALAT1 (metastasis-associated lung adenocarcinoma transcript 1), PCGEM1 (Prostate cancer gene expression marker 1), PVT1, etc. These plant-derived drugs or phytochemicals include resveratrol, curcumin, genistein, quercetin, epigallocatechin-3-galate, camptothcin, and 3,3'-diindolylmethane. More comprehensive information about lncRNA modulation via phytochemicals would be helpful for the administration of new herbal derivatives in cancer therapy. In this review, we describe the state-of-the-art and potential of phytochemicals as modulators of lncRNAs in different types of cancers.
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Affiliation(s)
- Tayebeh Saghafi
- Department of Energy and Environmental Biotechnology, National Institute of Genetic Engineering and Biotechnology (NIGEB), 14965/161, Tehran, Iran.
| | - Ramezan Ali Taheri
- Nanobiotechnology Research Center, Baqiyatallah University of Medical Sciences, P.O.Box 14965/161 Tehran, Iran.
| | - Seppo Parkkila
- Faculty of Medicine and Health Technology, Tampere University, FI-33520 Tampere, Finland.
- Fimlab Laboratories Ltd. and Tampere University Hospital, FI-33520 Tampere, Finland.
| | - Reza Zolfaghari Emameh
- Department of Energy and Environmental Biotechnology, National Institute of Genetic Engineering and Biotechnology (NIGEB), 14965/161, Tehran, Iran.
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25
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Ouyang W, Ren L, Liu G, Chi X, Wei H. LncRNA MIR4435-2HG predicts poor prognosis in patients with colorectal cancer. PeerJ 2019; 7:e6683. [PMID: 30972258 PMCID: PMC6450379 DOI: 10.7717/peerj.6683] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Accepted: 02/21/2019] [Indexed: 12/30/2022] Open
Abstract
Background LncRNA MIR4435-2HG is observed in a variety of cancers, while its role in colorectal cancer is unknown. We aimed to demonstrate the relationship between MIR4435-2HG and colorectal cancer based on The Cancer Genome Atlas (TCGA) database. Materials and Methods Patients with colorectal cancer were collected from TCGA. We compared the expression of MIR4435-2HG in colorectal cancer and normal tissues with Wilcoxon rank sum test, and logistic regression was used to evaluate the relationship between MIR4435-2HG and clinicopathological characters. Moreover, Kaplan–Meier and Cox regression was performed to evaluate the correlation between MIR4435-2HG and survival rate. Gene set enrichment analysis (GSEA) was also conducted to annotate biological function of MIR4435-2HG. Results MIR4435-2HG level was elevated in colorectal cancer tissues. Increased level of MIR4435-2HG was significantly correlated with TNM stage (OR = 1.66 for T1/T2 vs. T3/T4; OR = 1.68 for N0 vs. N1/N2), stage (OR = 1.66 for stage 1/2 vs. stage 3/4), and carcinoembryonic antigen level before treatment (OR = 1.70 for <5 vs. ≥5) (all P-value <0.05). High MIR4435-2HG expression had a poorer progression-free survival (p = 0.048), and overall survival (OS) (P = 0.028), which were validated in the GSE92921 and GSE29621 datasets. MIR4435-2HG expression (P = 0.040, HR = 1.955 (95% CI [1.031–3.710])) was independently correlated with OS. GSEA demonstrated that the P38/MAPK pathway, the VEGF pathway, the cell adhesion molecules cams, the NOD-like receptor signaling pathway, the cell surface interactions at the vascular wall, and integrin cell surface interactions were differentially enriched in MIR4435-2HG high expression phenotype. Conclusions Increased MIR4435-2HG might be a potential biomarker for the diagnosis and prognosis of colorectal cancer. Moreover, MIR4435-2HG might participate in the development of colorectal cancer via the P38/MAPK and VEGF pathway.
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Affiliation(s)
- Wen Ouyang
- The Second Clinical Medical College, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Linlin Ren
- Department of Gastroenterology, Affiliated hospital of Qingdao University, Qingdao, Shandong, China
| | - Guohong Liu
- Department of Gastroenterology, Affiliated hospital of Qingdao University, Qingdao, Shandong, China
| | - Xiaosa Chi
- Department of Gastroenterology, Affiliated hospital of Qingdao University, Qingdao, Shandong, China
| | - Hongyun Wei
- Department of Gastroenterology, Affiliated hospital of Qingdao University, Qingdao, Shandong, China
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26
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Bu JY, Lv WZ, Liao YF, Xiao XY, Lv BJ. Long non-coding RNA LINC00978 promotes cell proliferation and tumorigenesis via regulating microRNA-497/NTRK3 axis in gastric cancer. Int J Biol Macromol 2018; 123:1106-1114. [PMID: 30452981 DOI: 10.1016/j.ijbiomac.2018.11.162] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Revised: 11/15/2018] [Accepted: 11/16/2018] [Indexed: 12/20/2022]
Abstract
Gastric cancer (GC) is the most common gastrointestinal malignancy in the digestive system. Recent studies have proven that long non-coding RNAs (lncRNAs) are closely related to tumor growth and metastasis. The study aimed to explore the effect of LINC00978 on GC cells proliferation and tumorigenesis. LINC00978 was up-regulated in GC tissues and cell lines. Up-regulation of LINC00978 was positively correlated with low survival rate. LINC00978 silence inhibited proliferation, metastasis, and promoted apoptosis in BGC-823 cells. Additionally, LINC00978 functioned as competing endogenous RNA to inhibit miR-497 expression. Further, NTRK3 was confirmed as a target gene of miR-497. Up-regulation of NTRK3 was found in GC tissues, and the positive correlation was presented between LINC00978 and NTRK3. Further, LINC00978 promoted cell proliferation and tumor weight by regulation of NTRK3. These findings demonstrated that LINC00978 promoted cell proliferation and tumorigenesis by regulating miR-497/NTRK3 axis in GC.
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Affiliation(s)
- Ju-Yuan Bu
- Department of Gastrointestinal Surgery, The Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai, Guangdong 519000, China
| | - Wei-Ze Lv
- Department of Interventional Medicine, The Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai, Guangdong 519000, China
| | - Yi-Feng Liao
- Department of Tumor Chemotherapy, The Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai, Guangdong 519000, China
| | - Xiao-Yu Xiao
- Department of Anesthesiology, The Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai, Guangdong 519000, China
| | - Bao-Jun Lv
- Department of Gastrointestinal Surgery, The Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai, Guangdong 519000, China.
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27
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Li X, Ren Y, Zuo T. Long noncoding RNA LINC00978 promotes cell proliferation and invasion in non‑small cell lung cancer by inhibiting miR‑6754‑5p. Mol Med Rep 2018; 18:4725-4732. [PMID: 30221669 DOI: 10.3892/mmr.2018.9463] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Accepted: 07/26/2018] [Indexed: 11/06/2022] Open
Abstract
Long noncoding RNA LINC00978 has been reported to regulate the progression of several human types of cancer, including gastric and breast cancer. However, knowledge on LINC00978 in non‑small cell lung cancer (NSCLC) is limited. In the present study, it was demonstrated that LINC00978 expression was significantly upregulated in NSCLC tissues compared with the adjacent normal tissues. Furthermore, LINC00978 expression was positively correlated with the tumor, node and metastasis stage, and lymph node metastasis in NSCLC patients. Additionally, LINC00978 knockdown significantly inhibited the proliferation, migration and invasion of NSCLC cells while promoting cell apoptosis. In terms of the underlying mechanism, it was demonstrated that LINC00978 served as a competing endogenous RNA sponge for microRNA (miR)‑6754‑5p, which was downregulated in NSCLC tissues. The present study demonstrated that there was a negative correlation between LINC00978 and miR‑6754‑5p expression levels in NSCLC tissues. Additionally, it was demonstrated that inhibition of miR‑6754‑5p reversed the effects of LINC00978 knockdown on NSCLC cell proliferation, migration, invasion and apoptosis. In conclusion, results of the present study demonstrated that LINC00978 exerts an oncogenic role in NSCLC by inhibiting miR‑6754‑5p expression.
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Affiliation(s)
- Xinlei Li
- Department of Biological Science, Xi'an Jiaotong‑Liverpool University, Suzhou, Jiangsu 215123, P.R. China
| | - Yang Ren
- Department of Biological Science, Xi'an Jiaotong‑Liverpool University, Suzhou, Jiangsu 215123, P.R. China
| | - Tie Zuo
- Department of Thoracic Surgery, Yan'an Hospital Affiliated to Kunming Medical University, Kunming, Yunnan 650051, P.R. China
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28
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Wang D, Li J, Cai F, Xu Z, Li L, Zhu H, Liu W, Xu Q, Cao J, Sun J, Tang J. Overexpression of MAPT-AS1 is associated with better patient survival in breast cancer. Biochem Cell Biol 2018; 97:158-164. [PMID: 30074401 DOI: 10.1139/bcb-2018-0039] [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: 02/06/2023] Open
Abstract
Breast cancer is the most frequent malignant disease in women worldwide. It is a heterogeneous and complex genetic disease with different molecular characteristics. MAPT-AS1, a long non-coding RNA (lncRNA) existing at the anti-sense strand of the MAPT (microtubule associated protein tau) promoter region, was believed to regulate MAPT, which was associated with disease state in Parkinson's disease. But the role of MAPT-AS1 in breast cancer has never been reported. In our study we found that MAPT-AS1 is overexpressed in breast cancer but not in triple negative breast cancer (TNBC), and that high expression of MAPT-AS1 was correlated with better patient survival. In addition, the level of MAPT-AS1 was correlated with the expression of MAPT, and MAPT was associated with survival time in breast cancer. Our study suggests that MAPT-AS1 may play a role and be a potential survival predictive biomarker in breast cancer.
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Affiliation(s)
- Dongfeng Wang
- a Jiangsu Provincial Cancer Hospital, Affiliated to Nanjing Medical University, No. 42 of Baiziting, Nanjing, 210009, China.,b Institute of Jiangsu Provincial Cancer Prevention, No. 42 of Baiziting, Nanjing, 210009, China
| | - Jian Li
- a Jiangsu Provincial Cancer Hospital, Affiliated to Nanjing Medical University, No. 42 of Baiziting, Nanjing, 210009, China.,b Institute of Jiangsu Provincial Cancer Prevention, No. 42 of Baiziting, Nanjing, 210009, China
| | - Fengling Cai
- a Jiangsu Provincial Cancer Hospital, Affiliated to Nanjing Medical University, No. 42 of Baiziting, Nanjing, 210009, China.,b Institute of Jiangsu Provincial Cancer Prevention, No. 42 of Baiziting, Nanjing, 210009, China
| | - Zhi Xu
- a Jiangsu Provincial Cancer Hospital, Affiliated to Nanjing Medical University, No. 42 of Baiziting, Nanjing, 210009, China.,b Institute of Jiangsu Provincial Cancer Prevention, No. 42 of Baiziting, Nanjing, 210009, China
| | - Li Li
- a Jiangsu Provincial Cancer Hospital, Affiliated to Nanjing Medical University, No. 42 of Baiziting, Nanjing, 210009, China.,b Institute of Jiangsu Provincial Cancer Prevention, No. 42 of Baiziting, Nanjing, 210009, China
| | - Huanfeng Zhu
- a Jiangsu Provincial Cancer Hospital, Affiliated to Nanjing Medical University, No. 42 of Baiziting, Nanjing, 210009, China.,b Institute of Jiangsu Provincial Cancer Prevention, No. 42 of Baiziting, Nanjing, 210009, China
| | - Wei Liu
- a Jiangsu Provincial Cancer Hospital, Affiliated to Nanjing Medical University, No. 42 of Baiziting, Nanjing, 210009, China.,b Institute of Jiangsu Provincial Cancer Prevention, No. 42 of Baiziting, Nanjing, 210009, China
| | - Qingyu Xu
- a Jiangsu Provincial Cancer Hospital, Affiliated to Nanjing Medical University, No. 42 of Baiziting, Nanjing, 210009, China.,b Institute of Jiangsu Provincial Cancer Prevention, No. 42 of Baiziting, Nanjing, 210009, China
| | - Jian Cao
- a Jiangsu Provincial Cancer Hospital, Affiliated to Nanjing Medical University, No. 42 of Baiziting, Nanjing, 210009, China.,b Institute of Jiangsu Provincial Cancer Prevention, No. 42 of Baiziting, Nanjing, 210009, China
| | - Jingfeng Sun
- a Jiangsu Provincial Cancer Hospital, Affiliated to Nanjing Medical University, No. 42 of Baiziting, Nanjing, 210009, China.,b Institute of Jiangsu Provincial Cancer Prevention, No. 42 of Baiziting, Nanjing, 210009, China
| | - Jinhai Tang
- c Department of Surgery, The First Affiliated Hospital of Nanjing Medical University, No. 300 of Gangzhou Road, Nanjing 210029, China
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29
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Tian T, Wang M, Lin S, Guo Y, Dai Z, Liu K, Yang P, Dai C, Zhu Y, Zheng Y, Xu P, Zhu W, Dai Z. The Impact of lncRNA Dysregulation on Clinicopathology and Survival of Breast Cancer: A Systematic Review and Meta-analysis. MOLECULAR THERAPY. NUCLEIC ACIDS 2018; 12:359-369. [PMID: 30195774 PMCID: PMC6037885 DOI: 10.1016/j.omtn.2018.05.018] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Revised: 05/20/2018] [Accepted: 05/20/2018] [Indexed: 12/18/2022]
Abstract
Dysregulation of multiple long non-coding RNAs (lncRNAs) was reported to play major roles in breast cancer (BC). Here we aimed to collect most of the relevant literature to assess the prognostic value of lncRNAs in BC. To this end, we systematically searched PubMed, Embase, Web of Science, Chinese National Knowledge Infrastructure (CNKI), and Wanfang to identify published articles on the associations of lncRNAs with clinicopathology and/or survival of BC. Via this searching, we identified 70 articles involving 9,307 BC patients and regarding 48 lncRNAs. The expression of 41 lncRNAs was related to one or more clinicopathological parameters of BC, including tumor size; lymph node metastasis; histological grade; TNM stage; and estrogen receptor (ER), progesterone receptor (PR), and human epidermal growth factor receptor 2 (HER-2) statuses (p < 0.05). Dysregulation of 28 lncRNAs was associated with overall survival, and abnormal expression of 9 lncRNAs was linked to disease-free survival. Furthermore, the expression level of 3 lncRNAs was correlated with metastasis-free survival, 3 lncRNAs with relapse-free survival, and 3 lncRNAs with progression-free survival. Our analysis showed that multiple lncRNAs were significantly associated with BC clinicopathology and survival. A large-scale study is needed to verify the prognostic value of these lncRNAs in BC.
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Affiliation(s)
- Tian Tian
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, Shaanxi Province, China
| | - Meng Wang
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, Shaanxi Province, China
| | - Shuai Lin
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, Shaanxi Province, China
| | - Yan Guo
- School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, Shaanxi Province, China
| | - Zhiming Dai
- Department of Anesthesia, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, Shaanxi Province, China
| | - Kang Liu
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, Shaanxi Province, China
| | - Pengtao Yang
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, Shaanxi Province, China
| | - Cong Dai
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, Shaanxi Province, China
| | - Yuyao Zhu
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, Shaanxi Province, China
| | - Yi Zheng
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, Shaanxi Province, China
| | - Peng Xu
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, Shaanxi Province, China
| | - Wenge Zhu
- Department of Biochemistry and Molecular Medicine, The George Washington University Medical School, Washington, DC 20052, USA.
| | - Zhijun Dai
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, Shaanxi Province, China.
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30
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The lncRNA MIR4435-2HG promotes lung cancer progression by activating β-catenin signalling. J Mol Med (Berl) 2018; 96:753-764. [PMID: 29872866 DOI: 10.1007/s00109-018-1654-5] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Revised: 04/26/2018] [Accepted: 05/14/2018] [Indexed: 12/25/2022]
Abstract
Recently, emerging evidence has suggested that long noncoding RNAs (lncRNAs) have crucial roles in cancer progression. Here, we demonstrated that the lncRNA MIR4435-2HG was highly expressed in lung cancer tissues and correlated with histological grades and lymph node metastasis. Phenotypic analysis indicated that MIR4435-2HG knockdown inhibited lung cancer cell proliferation and invasion in vitro and in vivo. Notably, MIR4435-2HG knockdown suppressed the EMT (epithelial-mesenchymal transition) process and cancer stem cell traits of lung cancer cells. Mechanistically, MIR4435-2HG knockdown decreased the transactivation of β-catenin. MIR4435-2HG interacted with β-catenin and thus prevented its degradation by the proteasome system. Our findings highlight the important roles and mechanisms of MIR4435-2HG in lung cancer progression. High expression of lncRNA MIR4435-2HG correlates with lung cancer progression MIR4435-2HG promotes lung cancer cells proliferation and invasion MIR4435-2HG knockdown suppresses the EMT process and cancer stem cell traits MIR4435-2HG knockdown inhibits the β-catenin signalling.
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31
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Lv X, Cui Z, Li H, Li J, Yang Z, Bi Y, Gao M, Zhou B, Yin Z. Polymorphism in lncRNA AC008392.1 and its interaction with smoking on the risk of lung cancer in a Chinese population. Cancer Manag Res 2018; 10:1377-1387. [PMID: 29881308 PMCID: PMC5985799 DOI: 10.2147/cmar.s160818] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Purpose To evaluate the association between rs7248320 in lncRNA AC008392.1 and the risk of lung cancer, this case–control study was carried out in a Chinese population. This study also evaluated the gene–environment interaction between rs7248320 and exposure to smoking status on the risk of lung cancer. Patients and methods We conducted a hospital-based case–control study including 512 lung cancer cases and 588 healthy controls. The association between rs7248320 and the risk of lung cancer was analyzed, and the gene–environment interaction was estimated on an additive scale. Results The variant genotype of rs7248320 was significantly related to the risk of non-small-cell lung cancer (NSCLC). Individuals carrying homozygous GG genotype had decreased risk of NSCLC, compared with individuals carrying the homozygous wild AA genotype/heterozygote GA genotype (adjusted odds ratio [OR] =0.653, 95% confidence interval [CI] =0.442–0.966, P=0.033). Moreover, in the subgroup of ages, there were statistically significant associations between rs7248320 and the risk of lung cancer and NSCLC in the population over 60 years of age. Compared with individuals carrying genotypes AA/GA, individuals with genotype GG had the lower risk of lung cancer and NSCLC (adjusted ORs were 0.579 and 0.433, 95% CIs were 0.338–0.994 and 0.231–0.811, P-values were 0.048 and 0.009, respectively). Compared with homozygote AA, the homozygote GG was associated with a decreased risk in NSCLC (OR =0.456, 95% CI =0.235–0.887, P=0.021). There were no statistically significant results in gene–environment interactions on an additive scale. Conclusion These findings suggest that lncRNA AC008392.1 rs7248320 may be involved in genetic susceptibility to NSCLC in a Chinese population.
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Affiliation(s)
- Xiaoting Lv
- Department of Epidemiology, School of Public Health, China Medical University, Shenyang, 110122, People's Republic of China.,Key Laboratory of Cancer Etiology and Intervention, University of Liaoning Province, Shenyang, 110122, People's Republic of China
| | - Zhigang Cui
- School of Nursing, China Medical University, Shenyang, 110122, People's Republic of China
| | - Hang Li
- Department of Epidemiology, School of Public Health, China Medical University, Shenyang, 110122, People's Republic of China.,Key Laboratory of Cancer Etiology and Intervention, University of Liaoning Province, Shenyang, 110122, People's Republic of China
| | - Juan Li
- Department of Epidemiology, School of Public Health, China Medical University, Shenyang, 110122, People's Republic of China.,Key Laboratory of Cancer Etiology and Intervention, University of Liaoning Province, Shenyang, 110122, People's Republic of China
| | - Zitai Yang
- Department of Epidemiology, School of Public Health, China Medical University, Shenyang, 110122, People's Republic of China.,Key Laboratory of Cancer Etiology and Intervention, University of Liaoning Province, Shenyang, 110122, People's Republic of China
| | - Yanhong Bi
- Department of Epidemiology, School of Public Health, China Medical University, Shenyang, 110122, People's Republic of China.,Key Laboratory of Cancer Etiology and Intervention, University of Liaoning Province, Shenyang, 110122, People's Republic of China
| | - Min Gao
- Department of Epidemiology, School of Public Health, China Medical University, Shenyang, 110122, People's Republic of China.,Key Laboratory of Cancer Etiology and Intervention, University of Liaoning Province, Shenyang, 110122, People's Republic of China
| | - Baosen Zhou
- Department of Epidemiology, School of Public Health, China Medical University, Shenyang, 110122, People's Republic of China.,Key Laboratory of Cancer Etiology and Intervention, University of Liaoning Province, Shenyang, 110122, People's Republic of China
| | - Zhihua Yin
- Department of Epidemiology, School of Public Health, China Medical University, Shenyang, 110122, People's Republic of China.,Key Laboratory of Cancer Etiology and Intervention, University of Liaoning Province, Shenyang, 110122, People's Republic of China
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32
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Jiang X, Zhou Y, Sun AJ, Xue JL. NEAT1 contributes to breast cancer progression through modulating miR-448 and ZEB1. J Cell Physiol 2018; 233:8558-8566. [PMID: 29323713 DOI: 10.1002/jcp.26470] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Accepted: 01/05/2018] [Indexed: 12/20/2022]
Abstract
Breast cancer is a kind of common female cancers. Increasing evidence has exhibited that lncRNAs exert a crucial role in breast cancer. So far, the mechanism of lncRNAs in breast cancer is still not well established. In our current study, we focused on the biological role of lncRNA Nuclear Enriched Abundant Transcript 1 (NEAT1) in breast cancer. We observed that NEAT1 levels were significantly increased in human breast cancer cells including MCF-7, MDA-MB-453, MDA-MB-231, and SKBR3 cells compared to normal mammary epithelial cells MCF-10A while miR-448 was decreased. We found that downregulation of NEAT1 was able to inhibit the growth of breast cancer cells and miR-448 mimic exerted the similar function. Bioinformatics analysis and dual luciferase reporter assays confirmed the negative correlation between NEAT1 and miR-448 in vitro. In addition, ZEB1 was predicted as a novel mRNA target of miR-448. Overexpression of NEAT1 can induce breast cancer cell growth, migration, and invasion by inhibiting miR-448 and upregulating ZEB1. It was demonstrated that NEAT1 can increase ZEB1 levels while miR-448 mimic can repress ZEB1. It was speculated in our study that NEAT1 can serve as a competing endogenous lncRNA (ceRNA) to modulate ZEB1 by sponging miR-448 in breast cancer. To conclude, we uncovered that NEAT1 participated in breast cancer progression by regulating miR-448 and ZEB1. NEAT1 can be provided as a vital biomarker in breast cancer diagnosis and treatment therapy.
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Affiliation(s)
- Xing Jiang
- Center of Reproductive Medicine, Renmin Hospital, Hubei University of Medicine, Shiyan, China
| | - Yong Zhou
- Department of Breast Surgery, The Central Hospital of Enshi Autonomous Prefecture, Enshi Clinical College of Wuhan University, Enshi, Hubei, China
| | - Ai-Jun Sun
- Department of General Surgery, Huai'an Second People's Hospital, The Affiliated Huai'an Hospital of Xuzhou Medical University, Huai'an, China
| | - Jun-Li Xue
- Department of Oncology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
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33
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Li Y, Lv M, Song Z, Lou Z, Wang R, Zhuang M. Long non-coding RNA NNT-AS1 affects progression of breast cancer through miR-142-3p/ZEB1 axis. Biomed Pharmacother 2018; 103:939-946. [PMID: 29710510 DOI: 10.1016/j.biopha.2018.04.087] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2017] [Revised: 04/09/2018] [Accepted: 04/10/2018] [Indexed: 12/20/2022] Open
Abstract
Some evidences have been provided to verify the effects of lncRNA NNT-AS1 on cancer progression. However, the crucial impacts of NNT-AS1 on the malignancy of breast cancer have not been elaborated. This study aims to detect the expression pattern and functional effects of NNT-AS1 in breast cancer. qRT-PCR analysis was applied to detect the expression of NNT-AS1 in both BC tissues and matched normal tissues. Loss of function assay was carried out to detect the effects of silenced NNT-AS1 on proliferation, metastasis and EMT process of BC cells. To understand the functional mechanism of NNT-AS1, mechanism assays were designed and performed in BC cells. Subcellular fractionation assay demonstrated that NNT-AS1 was located in the cytoplasm of BC cells. Therefore, NNT-AS1 might exert ceRNA functions in BC cells. To validate this hypothesis, we found the combination between NNT-AS1 and miR-142-3p through conducting bioinformatics analysis, RIP and luciferase reporter assays. Similarly, the combination between miR-142-3p and ZEB1 was verified. Finally, the recue assays were carried out to demonstrate the effects of NNT-AS1/miR-142-3p/ZEB1 axis on the biological behaviors of BC cells. All the above findings revealed a fact that NNT-AS1 affects breast cancer progression through modulating miR-142-3p/ZEB1 axis.
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Affiliation(s)
- Yan Li
- Department of Oncology, Lianyungang First People's Hospital, Lianyungang, Jiangsu, 222002, China.
| | - Min Lv
- Department of Scientific Research, Nanjing Medical University Affiliated Cancer Hospital, Cancer Institute of Jiangsu Province, Nanjing, Jiangsu, 210009, China
| | - Ziyan Song
- Department of Oncology, Lianyungang First People's Hospital, Lianyungang, Jiangsu, 222002, China
| | - Zhi Lou
- Department of Oncology, Lianyungang First People's Hospital, Lianyungang, Jiangsu, 222002, China
| | - Ran Wang
- Department of Oncology, Lianyungang First People's Hospital, Lianyungang, Jiangsu, 222002, China
| | - Min Zhuang
- Department of Oncology, Lianyungang First People's Hospital, Lianyungang, Jiangsu, 222002, China.
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34
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Jiang J, Shi SH, Li XJ, Sun L, Ge QD, Li C, Zhang W. Long non-coding RNA BRAF-regulated lncRNA 1 promotes lymph node invasion, metastasis and proliferation, and predicts poor prognosis in breast cancer. Oncol Lett 2018; 15:9543-9552. [PMID: 29805676 DOI: 10.3892/ol.2018.8513] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2017] [Accepted: 02/02/2018] [Indexed: 02/07/2023] Open
Abstract
Long non-coding RNAs (lncRNAs) are primary regulators of cancer development via their involvement in almost every aspect of cell biology. Recent studies have indicated that lncRNAs serve pivotal roles in breast cancer (BC) progression; however, to the best of our knowledge, the role of the lncRNA BRAF-regulated lncRNA 1 (BANCR) in BC has not yet been elucidated. The present study revealed that BANCR was overexpressed in BC cell lines and tissues, and could promote the clinical progression of disease, including increases in tumor size, lymph node metastasis and Tumor-Node-Metastasis stage. Furthermore, high BANCR expression was demonstrated to be associated with poor overall survival rates and early recurrence of BC in patients. Additionally, univariate and multivariate COX regression analyses identified high BANCR expression as an independent risk factor of poor prognosis of patients with BC. In addition, to verify the function of BANCR in BC cell lines, BANCR expression was silenced using short hairpin RNAs in MDA-MB-231 cells and overexpressed in MDA-MB-468 cells. An MTT assay and colony formation assay indicated that BANCR knockdown could suppress the proliferation of BC cells, whereas BANCR upregulation induced the proliferation of BC cells. Furthermore, BANCR silencing also reduced the migration and invasion of BC cells, as demonstrated via transwell migration and invasion assays. Consistently, the migration and invasion of BC cells increased upon BANCR ectopic overexpression in MDA-MB-468 cells. Mechanistically, matrix metallopeptidase 2/9 and epithelial-mesenchymal transition markers may be the potential targets of BANCR in regulating BC metastasis. In conclusion, BANCR overexpression could promote the clinical progression, metastasis and proliferation of BC and indicate poor prognosis of patients with BC. BANCR may therefore be a potential prognostic marker and therapeutic target of patients with BC.
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Affiliation(s)
- Jing Jiang
- Department of Breast Surgery, Ningbo No. 2 Hospital, Ningbo, Zhejiang 315000, P.R. China
| | - Sheng-Hong Shi
- Department of Breast Surgery, Ningbo No. 2 Hospital, Ningbo, Zhejiang 315000, P.R. China
| | - Xu-Jun Li
- Department of Breast Surgery, Ningbo No. 2 Hospital, Ningbo, Zhejiang 315000, P.R. China
| | - Long Sun
- Department of Breast Surgery, Ningbo No. 2 Hospital, Ningbo, Zhejiang 315000, P.R. China
| | - Qi-Dong Ge
- Department of Breast Surgery, Ningbo No. 2 Hospital, Ningbo, Zhejiang 315000, P.R. China
| | - Chao Li
- Department of Breast Surgery, Ningbo No. 2 Hospital, Ningbo, Zhejiang 315000, P.R. China
| | - Wei Zhang
- Department of Breast Surgery, Ningbo No. 2 Hospital, Ningbo, Zhejiang 315000, P.R. China
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35
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Yang H, Chen T, Xu S, Zhang S, Zhang M. Long Noncoding RNA FOXC2-AS1 Predicts Poor Survival in Breast Cancer Patients and Promotes Cell Proliferation. Oncol Res 2018; 27:219-226. [PMID: 29562954 PMCID: PMC7848274 DOI: 10.3727/096504018x15213126075068] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Breast cancer (BC) is the most common malignant tumor in women. Recently, long noncoding RNAs (lncRNAs) have been proposed as critical regulators in biological processes, including tumorigenesis. FOXC2-AS1, a single antisense oligonucleotide RNA transcribed from the negative strand of forkhead box protein C2 (FOXC2), has been identified as an oncogene in osteosarcoma. In the present study, we investigated the prognosis value and biological role of FOXC2-AS1 in BC. Our findings revealed that FOXC2-AS1 was significantly increased in BC tissues and cell lines, and Kaplan–Meier survival analysis indicated that a high level of FOXC2-AS1 was associated with poor prognosis of BC patients. Loss of function revealed that silenced FOXC2-AS1 significantly suppressed the proliferation ability, and flow cytometric analysis illustrated the influence of FOXC2-AS1 on cell cycle and apoptosis rate. Finally, we found that cyclin D1, cyclin D2, and cyclin D3 were all partly positively modulated by FOXC2-AS1 in BC. Collectively, FOXC2-AS1 may serve as a promising prognostic biomarker and therapeutic target for BC patients.
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Affiliation(s)
- Haisong Yang
- Department of Breast Surgery, the Affiliated Hospital of Guizhou Medical University, Guizhou, P.R. China
| | - Tengxiang Chen
- Department of Physiology, Guizhou Medical University, Guizhou, P.R. China
| | - Shu Xu
- Department of Pathology, the Affiliated Hospital of Guizhou Medical University, Guizhou, P.R. China
| | - Shiyong Zhang
- Department of Breast Surgery, the Affiliated Hospital of Guizhou Medical University, Guizhou, P.R. China
| | - Mengmeng Zhang
- Department of Breast Surgery, the Affiliated Hospital of Guizhou Medical University, Guizhou, P.R. China
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Pasculli B, Barbano R, Parrella P. Epigenetics of breast cancer: Biology and clinical implication in the era of precision medicine. Semin Cancer Biol 2018; 51:22-35. [PMID: 29339244 DOI: 10.1016/j.semcancer.2018.01.007] [Citation(s) in RCA: 94] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Revised: 12/15/2017] [Accepted: 01/11/2018] [Indexed: 02/09/2023]
Abstract
In the last years, mortality from breast cancer has declined in western countries as a consequence of a more widespread screening resulting in earlier detection, as well as an improved molecular classification and advances in adjuvant treatment. Nevertheless, approximately one third of breast cancer patients will develop distant metastases and eventually die for the disease. There is now a compelling body of evidence suggesting that epigenetic modifications comprising DNA methylation and chromatin remodeling play a pivotal role since the early stages of breast cancerogenesis. In addition, recently, increasing emphasis is being placed on the property of ncRNAs to finely control gene expression at multiple levels by interacting with a wide array of molecules such that they might be designated as epigenetic modifiers. In this review, we summarize the current knowledge about the involvement of epigenetic modifications in breast cancer, and provide an overview of the significant association of epigenetic traits with the breast cancer clinicopathological features, emphasizing the potentiality of epigenetic marks to become biomarkers in the context of precision medicine.
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Affiliation(s)
- Barbara Pasculli
- Laboratory of Oncology, IRCCS "Casa Sollievo della Sofferenza", 71013, San Giovanni Rotondo, FG, Italy.
| | - Raffaela Barbano
- Laboratory of Oncology, IRCCS "Casa Sollievo della Sofferenza", 71013, San Giovanni Rotondo, FG, Italy.
| | - Paola Parrella
- Laboratory of Oncology, IRCCS "Casa Sollievo della Sofferenza", 71013, San Giovanni Rotondo, FG, Italy.
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37
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Fu M, Huang Z, Zang X, Pan L, Liang W, Chen J, Qian H, Xu W, Jiang P, Zhang X. Long noncoding RNA LINC00978 promotes cancer growth and acts as a diagnostic biomarker in gastric cancer. Cell Prolif 2017; 51. [PMID: 29271006 DOI: 10.1111/cpr.12425] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Accepted: 11/20/2017] [Indexed: 12/19/2022] Open
Abstract
OBJECTIVES Long noncoding RNAs (lncRNAs) play important roles in cancer development and progression. The deregulated expression of LINC00978 has been reported in human cancers. However, the expression pattern and biological roles of LINC00978 in gastric cancer (GC) remain unclear. In this study, we investigated the potential roles and clinical value of LINC00978 in gastric cancer. MATERIALS AND METHODS QRT-PCR was performed to investigate the expression of LINC00978 in gastric cancer cell lines, tissues and serum samples. Cell counting, colony formation, transwell migration and matrigel invasion assays were performed to determine the effects of shRNA-mediated knockdown of LINC00978 on gastric cancer cell functions. In vivo tumour growth assay was also conducted. Flow cytometry, immunohistochemistry, western blot and qRT-PCR were used for potential mechanism study. RESULTS LINC00978 expression level was elevated in GC tumour tissues, serum samples and cell lines. The expression level of LINC00978 was significantly correlated with tumour size (P = 0.02), lymphatic metastasis (P = 0.009) and TNM stage (P = 0.009). LINC00978 knockdown inhibited the proliferation of GC cells by suppressing cell cycle progression and inducing apoptosis. LINC00978 knockdown also inhibited the migration and invasion of GC cells. In addition, LINC00978 knockdown inhibited the activation of TGF-β/SMAD signalling pathway and the process of epithelial-mesenchymal transition (EMT) in GC cells. Moreover, the in vivo tumorigenicity of LINC00978 knockdown GC cells in mice was significantly decreased. CONCLUSIONS LINC00978 promotes gastric cancer progression and may serve as a potential biomarker for GC.
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Affiliation(s)
- Min Fu
- Department of General Surgery, The Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu, China.,Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China.,Institute of Digestive Diseases, The Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
| | - Zhenhua Huang
- Department of General Surgery, The Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu, China.,Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Xueyan Zang
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Lei Pan
- Department of General Surgery, The Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu, China.,Institute of Digestive Diseases, The Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
| | - Wei Liang
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Jingyan Chen
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Hui Qian
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Wenrong Xu
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Pengcheng Jiang
- Department of General Surgery, The Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu, China.,Institute of Digestive Diseases, The Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
| | - Xu Zhang
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China.,Institute of Digestive Diseases, The Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
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38
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Long non-coding RNA HOXA11-AS promotes the proliferation HCC cells by epigenetically silencing DUSP5. Oncotarget 2017; 8:109509-109521. [PMID: 29312625 PMCID: PMC5752538 DOI: 10.18632/oncotarget.22723] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Accepted: 07/26/2017] [Indexed: 01/11/2023] Open
Abstract
Hepatocellular carcinoma has been identified as the fifth most common cancer in men and the ninth in women worldwide. Despite many efforts have been made in recent years, the overall survival rate of patients with hepatocellular carcinoma still remain unsatisfied. Therefore, exploring the mechanisms underlying the progression of hepatocellular carcinoma is essential for developing novel treatments to improve patient prognosis. HOXA11-AS, transcribed from the opposite strand of the protein-coding gene HOXA11, has been identified to be associated with the malignant characteristics of several cancers. However, the biological role and molecular mechanism of HOXA11-AS in hepatocellular carcinoma still need to be further investigated. In the current study, the expression of HOXA11-AS in the hepatocellular carcinoma cell lines and tissues was measured by quantitative real-time PCR. Loss-of-function and gain-of-function approaches were applied to investigate the proliferative function of HOXA11-AS in hepatocellular carcinoma cells. Results from flow cytometric analysis of apoptosis and cell cycle distribution revealed that HOXA11-AS promoted hepatocellular carcinoma cells proliferation through regulating cell cycle and apoptosis. Gene chip technology and quantitative real-time PCR confirmed that DUSP5 was a downstream target of HOXA11-AS. RNA immune co-precipitation assays, RNA pull-down and Chromatin immunoprecipitation assays confirmed that HOXA11-AS could recruit EZH2 to the promoter region of DUSP5, which therefore suppressed the transcription of DUSP5. Collectively, these findings revealed that HOXA11-AS functions as an oncogene in hepatocellular carcinoma through interacting with polycomb-repressive complex2.
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Zhang Y, Huang JC, Cai KT, Yu XB, Chen YR, Pan WY, He ZL, Lv J, Feng ZB, Chen G. Long non‑coding RNA HOTTIP promotes hepatocellular carcinoma tumorigenesis and development: A comprehensive investigation based on bioinformatics, qRT‑PCR and meta‑analysis of 393 cases. Int J Oncol 2017; 51:1705-1721. [PMID: 29039502 PMCID: PMC5673011 DOI: 10.3892/ijo.2017.4164] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Accepted: 10/06/2017] [Indexed: 12/20/2022] Open
Abstract
HOTTIP functions as an independent biomarker in multiple cancers. However, the role of HOTTIP in hepatocellular carcinoma (HCC) remains unclear. In this study, we sought to investigate the HOTTIP expression in HCC and normal liver. We combined quantitative reverse transcription-polymerase chain reactions (qRT-PCR), Gene Expression Omnibus (GEO) and The Cancer Genome Atlas (TCGA), Multi Experiment Matrix (MEM) and Oncomine database to assess the clinical role and the potential molecular mechanism of HOTTIP in HCC. Furthermore, a meta-analysis was performed to evaluate the relationship between HOTTIP and HCC tumorigenesis and development. Additionally, bioinformatics analysis, which contained Gene Ontology (GO), Kyoto Encyclopedia of Genes and Genomes (KEGG) and network analysis, were applied to investigate the underlying functions, pathways and networks of the potential genes. HOTTIP was obviously upregulated in HCC. A statistically significant higher expression of HOTTIP was found in TNM (III +IV), age (≥60), sex (male), race (white) and cirrhosis (no) compared to the control groups (P<0.05). Furthermore, the meta-analysis of 393 cases from multiple centers indicated that HOTTIP had high diagnostic value in HCC. Additionally, according to GO and KEGG analyses, we found that the most strongly enriched functional terms were gland development, transcription factor activity and extrinsic to membrane. Also, the HOTTIP co-expressed genes were significantly related to PPAR signaling pathway. We speculate that HOTTIP might play a vital part in HCC via regulating various pathways, especially PPAR signaling pathway. However, the detailed mechanism should be confirmed by functional experiments.
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Affiliation(s)
- Yu Zhang
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region 530021, P.R. China
| | - Jia-Cheng Huang
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region 530021, P.R. China
| | - Kai-Teng Cai
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region 530021, P.R. China
| | - Xi-Bing Yu
- Department of Hepatobiliary Surgery, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region 530021, P.R. China
| | - You-Rong Chen
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region 530021, P.R. China
| | - Wen-Ya Pan
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region 530021, P.R. China
| | - Ze-Liang He
- Department of Hepatobiliary Surgery, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region 530021, P.R. China
| | - Jun Lv
- Department of Hepatobiliary Surgery, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region 530021, P.R. China
| | - Zhen-Bo Feng
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region 530021, P.R. China
| | - Gang Chen
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region 530021, P.R. China
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