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Liu J, Jiang M, Guan J, Wang Y, Yu W, Hu Y, Zhang X, Yang J. LncRNA KCNQ1OT1 enhances the radioresistance of lung squamous cell carcinoma by targeting the miR-491-5p/TPX2-RNF2 axis. J Thorac Dis 2022; 14:4081-4095. [PMID: 36389338 PMCID: PMC9641317 DOI: 10.21037/jtd-22-1261] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Accepted: 10/14/2022] [Indexed: 12/01/2022]
Abstract
BACKGROUND Lung cancer, especially lung squamous cell carcinoma (LUSC), is one of the most common malignant tumors worldwide. Currently, radiosensitization research is a vital direction for the improvement of LUSC therapy. Long non-coding RNAs (lncRNAs) can be novel biomarkers due to their multiple functions in cancers. However, the function and mechanism of lncRNA KCNQ1OT1 in the radioresistance of LUSC remain to be elucidated. METHODS The clonogenic assay was employed to determine the radioresistance of SK-MES-1R and NCI-H226R cells. Real-time quantitative polymerase chain reaction (RT-qPCR) and Western blot were conducted for the detection of gene expression. Cell proliferation was determined by the methyl thiazolyl tetrazolium (MTT) assay, colony formation assay, and 5-ethynyl-2'-deoxyuridine (EdU) staining, and cell apoptosis was assessed by flow cytometry. The relationships between genes were also evaluated by applying the luciferase reporter and radioimmunoprecipitation (RIP) assays. RESULTS Radioresistant LUSC cells (SK-MES-1R and NCI-H226R) had strong resistance to X-ray irradiation, and lncRNA KCNQ1OT1 was highly expressed in SK-MES-1R and NCI-H226R cells. Moreover, knockdown of lncRNA KCNQ1OT1 prominently suppressed proliferation, attenuated radioresistance, and accelerated the apoptosis of SK-MES-1R and NCI-H226R cells. More importantly, we verified that miR-491-5p was a regulatory target of lncRNA KCNQ1OT1, and Xenopus kinesin-like protein 2 (TPX2) and RING finger protein 2 (RNF2) were the target genes of miR-491-5p. The rescue experiment results also demonstrated that miR-491-5p was involved in the inhibition of cell proliferation and the downregulation of TPX2 and RNF2 expression mediated by lncRNA KCNQ1OT1 knockdown in SK-MES-1R and NCI-H226R cells. CONCLUSIONS LncRNA KCNQ1OT1 was associated with the radioresistance of radioresistant LUSC cells, and the lncRNA KCNQ1OT1/miR-491-5p/TPX2-RNF2 axis might be used as a therapeutic target to enhance the radiosensitivity of radioresistant LUSC cells.
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Affiliation(s)
- Jiahui Liu
- Department of Cardiothoracic Surgery Nursing Platform, First Hospital of Jilin University, Changchun, China
| | - Mi Jiang
- Department of Cardiothoracic Surgery Nursing Platform, First Hospital of Jilin University, Changchun, China
| | - Jinlei Guan
- Department of Radiotherapy, The Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Yuan Wang
- Department of Radiotherapy, The Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Wenjuan Yu
- Department of Radiotherapy, The Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Yuanping Hu
- Department of Radiotherapy, The Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Xin Zhang
- Department of Radiotherapy, The Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Jie Yang
- Department of Radiotherapy, The Fourth Hospital of Hebei Medical University, Shijiazhuang, China
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Sadri F, Hosseini SF, Aghayei A, Fereidouni M, Rezaei Z. The Tumor Suppressor Roles and Mechanisms of MiR-491 in Human Cancers. DNA Cell Biol 2022; 41:810-823. [PMID: 35914029 DOI: 10.1089/dna.2022.0274] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
MicroRNAs (miRNAs) are short non-coding RNAs that bind to the 3' untranslated region (3'' UTR) of target mRNAs to control gene expression post-transcriptionally. Recent indications have highlighted their important roles in a variety of pathophysiological conditions as well as human malignancies. Dysregulated miRNAs act as tumor suppressor genes or oncogenes in a variety of cancers. MiR-491 has been shown to have a major effect on tumorigenesis in multiple malignancies through binding to specific genes and signaling cascades, thereby preventing cancer progression. This review provides an overview of miR-491 expression in regulatory mechanisms and biological procedures of tumor cells, as well as the prospective possible treatment effects of various types of human cancers.
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Affiliation(s)
- Farzad Sadri
- Student Research Committee, Department of Molecular Medicine, Birjand University of Medical Sciences, Birjand, Iran
| | - Seyede Fatemeh Hosseini
- Department of Nursing, Tabas School of Nursing, Birjand University of Medical Sciences, Birjand, Iran
| | - Atena Aghayei
- Department of Biology, Faculty of Science, Yazd University, Yazd, Iran
| | - Mohammad Fereidouni
- Department of Medical Immunology, Faculty of Medicine, Birjand University of Medical Sciences, Birjand, Iran.,Cellular and Molecular Research Center, Department of Immunology, Birjand University of Medical Sciences, Birjand, Iran
| | - Zohreh Rezaei
- Cellular and Molecular Research Center, Department of Immunology, Birjand University of Medical Sciences, Birjand, Iran.,Department of Biology, University of Sistan and Baluchestan, Zahedan, Iran
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3
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Wang L, Liang C, Lin X, Liu C, Li J. microRNA-491-5p regulates osteogenic differentiation of bone marrow stem cells in type 2 diabetes. Oral Dis 2021; 29:308-321. [PMID: 34618998 DOI: 10.1111/odi.14005] [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: 04/21/2021] [Revised: 08/04/2021] [Accepted: 08/10/2021] [Indexed: 11/28/2022]
Abstract
OBJECTIVES Osseointegration of oral implants has a low success rate in patients with type 2 diabetes. This is because of the inhibition of osteogenic differentiation in the jawbone marrow mesenchymal stem cells, in which the expression of microRNA(miR)-491-5p is significantly downregulated, as ascertained through gene chip screening. However, the underlying mechanisms are unclear. Here, we aimed to clarify the mechanisms involved in the influence of miR-491-5p on osteogenic differentiation. SUBJECTS AND METHODS Jawbone marrow mesenchymal stem cells were isolated from jawbones of patients with type 2 diabetes and subjected to bioinformatics and functional analyses. Osteogenesis experiments were conducted using the isolated cells and an in vivo model. RESULTS Knockdown and overexpression experiments revealed the positive effects of miR-491-5p expression on osteogenic differentiation in vivo and in vitro. Additionally, a dual-luciferase assay revealed that miR-491-5p targeted the SMAD/RUNX2 pathway by inhibiting the expression of epidermal growth factor receptor. CONCLUSIONS miR-491-5p is vital in osteogenic differentiation of jawbone mesenchymal stem cells; its downregulation in type 2 diabetes could be a major cause of decreased osteogenic differentiation. Regulation of miR-491-5p expression could improve osteogenic differentiation of jawbone mesenchymal stem cells in patients with type 2 diabetes.
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Affiliation(s)
- Lingxiao Wang
- Department of Dental Implant Centre, Beijing Stomatological Hospital, Capital Medical University, Capital Medical University School of Stomatology, Beijing, China
| | - Chao Liang
- Department of Dental Implant Centre, Beijing Stomatological Hospital, Capital Medical University, Capital Medical University School of Stomatology, Beijing, China
| | - Xiao Lin
- Department of Dental Implant Centre, Beijing Stomatological Hospital, Capital Medical University, Capital Medical University School of Stomatology, Beijing, China
| | - Changying Liu
- Department of Dental Implant Centre, Beijing Stomatological Hospital, Capital Medical University, Capital Medical University School of Stomatology, Beijing, China
| | - Jun Li
- Department of Dental Implant Centre, Beijing Stomatological Hospital, Capital Medical University, Capital Medical University School of Stomatology, Beijing, China.,Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing, China
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4
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Shi W, Hu D, Xing Y, Zhuo R, Lao Q, Liu H, Pang W. Deciphering the Oncogenic Role of VPS28 Modulated by miR-491-5p in Breast Cancer Cells Using In Silico and Functional Analysis. Front Mol Biosci 2021; 8:634183. [PMID: 34395516 PMCID: PMC8360854 DOI: 10.3389/fmolb.2021.634183] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Accepted: 06/29/2021] [Indexed: 12/31/2022] Open
Abstract
Vacuolar protein sorting–associated protein 28 (VPS28), one of the four cytosolic proteins comprising the endosomal sorting complex required for the transport I (ESCRT-I) component, has been reported to be linked to various cancers. However, less evidence is available regarding the involvement of VPS28 in breast cancer. To this end, this study focused on exploring the function of VPS28 in breast cancer cells using the in silico analysis. VPS28 expression pattern data in breast cancer tissues were collected using the Cancer Genome Atlas (TCGA) and Clinical Proteomic Tumor Analysis Consortium (CPTAC) databases and analyzed to assess the association of VPS28 with breast cancer prognosis. The elevated VPS28 expression was found in breast cancer tissues and was associated with a poor prognosis (p < 0.001). A higher VPS28 expression indicated a short survival duration (HR = 2.43; 95% CI: 1.44–4.1; p < 0.001). The CCLE database showed that VPS28 was expressed in breast cancer cell lines. The upstream targets of VPS28 were identified using the mirDIP, starBase, and TargetScan online tools. The correlation and binding relationship between miR-491-5p and VPS28 was analyzed. VPS28 or miR-491-5p gain and loss of function experiments were performed to verify their potential effect on the biological functions of breast cancer cells. Knockdown of VPS28 was shown to suppress the biological functions and enhance the apoptosis of breast cancer cell lines. Micro RNA-491-5p, identified as a posttranscriptional regulator of VPS28, was downregulated in breast cancer tissues. In contrast to the miR-491-5p inhibitor, the miR-491-5p mimic could suppress the migration, wound healing ability, and proliferation, while accelerating apoptosis. However, co-transfection of VPS28 and miR-491-5p counteracted the effect of the miR-491-5p mimic on breast cancer cell functions. Thus, our in silico analysis demonstrates that miR-491-5p can suppress breast cancer progression by attenuating the expression of VPS28.
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Affiliation(s)
- Wenjie Shi
- School of Public Health, Guilin Medical University, Guilin, China
| | - Daojun Hu
- Department of Clinical Laboratory, Xinhua Hospital Chongming Branch, Shanghai, China
| | - Yu Xing
- School of Public Health, Guilin Medical University, Guilin, China
| | - Rui Zhuo
- Department of Breast Surgery, Guilin TCM Hospital of China, Affiliated to Guang Xi University of Chinese Medicine Guilin, Guilin, China
| | - Qiufeng Lao
- School of Public Health, Guilin Medical University, Guilin, China
| | - Hui Liu
- School of Public Health, Guilin Medical University, Guilin, China
| | - Weiyi Pang
- School of Public Health, Guilin Medical University, Guilin, China
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Xiu M, Wang Y, Li B, Wang X, Xiao F, Chen S, Zhang L, Zhou B, Hua F. The Role of Notch3 Signaling in Cancer Stemness and Chemoresistance: Molecular Mechanisms and Targeting Strategies. Front Mol Biosci 2021; 8:694141. [PMID: 34195229 PMCID: PMC8237348 DOI: 10.3389/fmolb.2021.694141] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Accepted: 05/27/2021] [Indexed: 12/19/2022] Open
Abstract
Aberrant Notch signaling profoundly affects cancer progression. Especially the Notch3 receptor was found to be dysregulated in cancer, where its expression is correlated with worse clinicopathological features and poor prognosis. The activation of Notch3 signaling is closely related to the activation of cancer stem cells (CSCs), a small subpopulation in cancer that is responsible for cancer progression. In addition, Notch3 signaling also contributes to tumor chemoresistance against several drugs, including doxorubicin, platinum, taxane, epidermal growth factor receptor (EGFR)–tyrosine kinase inhibitors (TKIs) and gemcitabine, through complex mechanisms. In this review, we mainly focus on discussing the molecular mechanisms by which Notch3 modulates cancer stemness and chemoresistance, as well as other cancer behaviors including metastasis and angiogenesis. What’s more, we propose potential treatment strategies to block Notch3 signaling, such as non-coding RNAs, antibodies and antibody-drug conjugates, providing a comprehensive reference for research on precise targeted cancer therapy.
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Affiliation(s)
- Mengxi Xiu
- Department of Anesthesiology, The Second Affiliated Hospital of Nanchang University, Nanchang, China.,Key Laboratory of Anesthesiology of Jiangxi Province, Nanchang, China
| | - Yongbo Wang
- Department of Anesthesiology, The Second Affiliated Hospital of Nanchang University, Nanchang, China.,Key Laboratory of Anesthesiology of Jiangxi Province, Nanchang, China
| | - Baoli Li
- Department of Anesthesiology, The Second Affiliated Hospital of Nanchang University, Nanchang, China.,Key Laboratory of Anesthesiology of Jiangxi Province, Nanchang, China
| | - Xifeng Wang
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Fan Xiao
- Department of Anesthesiology, The Second Affiliated Hospital of Nanchang University, Nanchang, China.,Key Laboratory of Anesthesiology of Jiangxi Province, Nanchang, China
| | - Shoulin Chen
- Department of Anesthesiology, The Second Affiliated Hospital of Nanchang University, Nanchang, China.,Key Laboratory of Anesthesiology of Jiangxi Province, Nanchang, China
| | - Lieliang Zhang
- Department of Anesthesiology, The Second Affiliated Hospital of Nanchang University, Nanchang, China.,Key Laboratory of Anesthesiology of Jiangxi Province, Nanchang, China
| | - Bin Zhou
- Department of Anesthesiology, The Second Affiliated Hospital of Nanchang University, Nanchang, China.,Key Laboratory of Anesthesiology of Jiangxi Province, Nanchang, China
| | - Fuzhou Hua
- Department of Anesthesiology, The Second Affiliated Hospital of Nanchang University, Nanchang, China.,Key Laboratory of Anesthesiology of Jiangxi Province, Nanchang, China
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Wu F, Ji A, Zhang Z, Li J, Li P. miR-491-5p inhibits the proliferation and migration of A549 cells by FOXP4. Exp Ther Med 2021; 21:622. [PMID: 33936279 PMCID: PMC8082662 DOI: 10.3892/etm.2021.10054] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2018] [Accepted: 03/11/2021] [Indexed: 12/25/2022] Open
Abstract
Aberrant expression of microRNAs (miRNAs/miRs) plays a key role in the development of non-small cell lung cancer (NSCLC). In the present study, lower miRNA (miR)-491-5p levels and a higher forkhead box P4 (FOXP4) mRNA level were observed in NSCLC tissues and cell lines, compared to adjacent tissues and the normal human lung epithelial cell line BEAS-2B, respectively. A549 cell proliferation and migration were inhibited upon transfection of miR-491-5p mimics compared to miR-negative control (NC) mimics. In addition, compared to miR-NC mimics, overexpression of miR-491-5p decreased FOXP4 expression, while downregulation of miR-491-5p increased FOXP4 expression in A549 cells. The dual luciferase assay confirmed that the 3'untranslated region of FOXP4 was a target for miR-491-5p in A549 cells. Moreover, compared with the control short hairpin (sh)RNA, there was lower expression levels of TGF-β and its downstream targets (MMP-2 and MMP-9) in the FOXP4 shRNA group. Similarly, compared to miR-NC mimics, overexpression of miR-491-5p decreased MMP-2 and MMP-9 expression levels. In FOXP4-knockdown A549 cells, overexpression of miR-491-5p showed little effect on cell proliferation/migration. In A549 cells, overexpression of FOXP4 partially reversed the miR-491-5p mimics-induced inhibition on the cell proliferation and migration. These results may provide new insights into the role of miR-491-5p in NSCLC.
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Affiliation(s)
- Fuyong Wu
- Third Department of Oncology, People's Hospital of Shouguang, Shouguang, Shandong 262700, P.R. China
| | - Aiping Ji
- Second Department of Oncology, People's Hospital of Shouguang, Shouguang, Shandong 262700, P.R. China
| | - Zhenkun Zhang
- Third Department of Oncology, People's Hospital of Shouguang, Shouguang, Shandong 262700, P.R. China
| | - Jinfang Li
- Third Department of Oncology, People's Hospital of Shouguang, Shouguang, Shandong 262700, P.R. China
| | - Penglong Li
- Department of Oncology, Yantai Laiyang Central Hospital, Laiyang, Shandong 265200, P.R. China
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Sun L, Zhang M, Qu H. lncRNA XIST regulates cell proliferation, migration and invasion via regulating miR-30b and RECK in nasopharyngeal carcinoma. Oncol Lett 2021; 21:256. [PMID: 33664820 PMCID: PMC7882881 DOI: 10.3892/ol.2021.12513] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Accepted: 12/10/2020] [Indexed: 12/21/2022] Open
Abstract
Long non-coding RNA (lncRNA) X-inactive specific transcript (XIST) plays an essential role in the development and progress of nasopharyngeal carcinoma (NPC). MicroRNA-30b (miR-30b) has been confirmed to play an inhibitory role in various types of cancer. The molecular mechanisms underlying the lncRNA XIST-mediated regulation of the metastasis of NPC cells by miR-30b is not clear. qPCR and western blot analysis were used to detect the expression of XIST, miR-30b, and reversion inducing cysteine rich protein with kazal motifs (RECK) in NPC tissues and cell lines. The detection of luciferase reporter gene confirmed the relationship between lncRNA XIST, miR-30b and RECK. CCK-8 and Transwell assays were performed in order to detect the proliferation, migration and invasion of the NPC cells. The results of qPCR and western blotting indicated that the expression levels of lncRNA XIST and RECK were higher in the NPC tissues and cell lines than that of the control group, while the expression of miR-30b was lower. Knockdown of lncRNA XIST significantly inhibited cell proliferation, migration and invasion in the NPC cell lines. In addition, lncRNA XIST was found to negatively regulate the expression of miR-30b, resulting in the upregulation of RECK. Overexpression of RECK was found to reverse the inhibitory effect of lncRNA XIST knockdown or miR-30b on NPC cell metastasis. Our results showed that cell migration and invasion were inhibited by knockdown of lncRNA XIST, suggesting that the lncRNA XIST/miR-30b/RECK axis is involved in the development of NPC.
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Affiliation(s)
- Lingling Sun
- Department of Otorhinolaryngology Head and Neck Surgery, Liaocheng People's Hospital, Liaocheng, Shandong 25200, P.R. China
| | - Min Zhang
- Department of Otorhinolaryngology Head and Neck Surgery, Liaocheng People's Hospital, Liaocheng, Shandong 25200, P.R. China
| | - Hongxia Qu
- Department of Radiology, Liaocheng People's Hospital, Liaocheng, Shandong 25200, P.R. China
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Carron J, Torricelli C, Silva JK, Queiroz GSR, Ortega MM, Lima CSP, Lourenço GJ. microRNAs deregulation in head and neck squamous cell carcinoma. Head Neck 2020; 43:645-667. [PMID: 33159410 DOI: 10.1002/hed.26533] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 09/30/2020] [Accepted: 10/23/2020] [Indexed: 12/24/2022] Open
Abstract
Head and neck (HN) squamous cell carcinoma (SCC) is the eighth most common human cancer worldwide. Besides tobacco and alcohol consumption, genetic and epigenetic alterations play an important role in HNSCC occurrence and progression. microRNAs (miRNAs) are small noncoding RNAs that regulate cell cycle, proliferation, development, differentiation, and apoptosis by interfering in gene expression. Expression profiling of miRNAs showed that some miRNAs are upregulated or downregulated in tumor cells when compared with the normal cells. The present review focuses on the role of miRNAs deregulations in HNSCC, enrolled in risk, development, outcome, and therapy sensitivity. Moreover, the influence of single nucleotide variants in miRNAs target sites, miRNAs seed sites, and miRNAs-processing genes in HNSCC was also revised. Due to its potential for cancer diagnosis, progression, and as a therapeutic target, miRNAs may bring new perspectives in HNSCC understanding and therapy, especially for those patients with no or insufficient treatment options.
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Affiliation(s)
- Juliana Carron
- Laboratory of Cancer Genetics, School of Medical Sciences, University of Campinas, Campinas, Brazil
| | - Caroline Torricelli
- Laboratory of Cancer Genetics, School of Medical Sciences, University of Campinas, Campinas, Brazil
| | - Janet K Silva
- Laboratory of Cancer Genetics, School of Medical Sciences, University of Campinas, Campinas, Brazil
| | - Gabriela S R Queiroz
- Laboratory of Cancer Genetics, School of Medical Sciences, University of Campinas, Campinas, Brazil
| | - Manoela M Ortega
- Laboratory of Cell and Molecular Tumor Biology and Bioactive Compounds, São Francisco University, Bragança Paulista, Brazil
| | - Carmen S P Lima
- Laboratory of Cancer Genetics, School of Medical Sciences, University of Campinas, Campinas, Brazil
| | - Gustavo J Lourenço
- Laboratory of Cancer Genetics, School of Medical Sciences, University of Campinas, Campinas, Brazil
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Long non-coding RNA LBX2-AS1 enhances glioma proliferation through downregulating microRNA-491-5p. Cancer Cell Int 2020; 20:411. [PMID: 32863770 PMCID: PMC7448496 DOI: 10.1186/s12935-020-01433-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 07/08/2020] [Accepted: 07/18/2020] [Indexed: 12/16/2022] Open
Abstract
Background Dysregulation of lncRNAs is frequent in glioma and has emerged as an important mechanism involved in tumorigenesis. Previous analysis of Chinese Glioma Genome Atlas (CGGA) database indicated that LBX2-AS1 expression is one of differentially expression lncRNA between lower grade glioma (LGG) (grade II and III) and glioblastoma multiforme (GBM). However, the function and mechanism of LBX2-AS1 in glioma has not been evaluated yet. Methods Here, we analyzed the expression of LBX2-AS1 in GTEx data (normal brain), TCGA-LGG and TCGA-GBM. RT-PCR was performed to detect LBX2-AS1 in surgery obtained normal brain and glioma. CCK-8 kit and Annexin V-FITC-PI Apoptosis Detection Kit were used to study the function of LBX2-AS1 on glioma proliferation and apoptosis. Bioinformatic analysis, RNA immunoprecipitation, RT-PCR, western blotting and dual luciferase reporter assay were carried out to investigate the target miRNA of LBX2-AS1. The discovered mechanism was validated by the rescue assay. Results Following study of GTEx and TCGA data, LBX2-AS1 was significantly elevated in glioma compared with normal brain and in GBM compared with LGG. Higher expression of LBX2-AS1 was associated with poor prognosis of patients with glioma. Expression of LBX2-AS1 was positively correlated with pathology classification of glioma. Knockdown of LBX2-AS1 inhibited cell proliferation and induced cell apoptosis in glioma. LBX2-AS1 have complimentary binding site for tumor suppressor miR-491-5p and we showed that LBX2-AS1 sponged miR-491-5p to upregulate TRIM28 expression in glioma cells. TRIM28 overexpression attenuated the effect of LBX2-AS1 knockdown on glioma cells. Conclusions In conclusion, LBX2-AS1 was an increased lncRNA in glioma. Mechanistically, LBX2-AS1 promoted glioma cell proliferation and resistance to cell apoptosis via sponging miR-491-5p.
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Qi G, Li L. LncRNA TTN-AS1 Promotes Progression of Non-Small Cell Lung Cancer via Regulating miR-491-5p/ZNF503 Axis. Onco Targets Ther 2020; 13:6361-6371. [PMID: 32669856 PMCID: PMC7335898 DOI: 10.2147/ott.s238890] [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: 11/16/2019] [Accepted: 03/19/2020] [Indexed: 12/13/2022] Open
Abstract
Background Non-small cell lung cancer (NSCLC) is the most common type of lung cancer with high mortality worldwide. Long non-coding RNA (lncRNA) TTN antisense RNA1 (TTN-AS1) has been demonstrated to play a crucial role in a variety of cancers. This study was designed to investigate the function and molecular mechanism of lncRNA TTN-AS1 in NSCLC. Methods The expression levels of TTN-AS1, miR-491-5p and zinc finger protein 503 (ZNF503) were examined by quantitative real-time polymerase chain reaction (qRT-PCR) or Western blot assay, respectively. Cell viability was detected by 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2-H-tetrazolium bromide (MTT) assay. Cell migration and invasion were assessed by transwell assay. Epithelial-to-mesenchymal transition (EMT)-related proteins were measured using Western blot assay. The relationship between TTN-AS1, miR-491-5p and ZNF503 was predicted by starBase2.0 and confirmed by dual-luciferase reporter assay. Xenograft tumor experiment was conducted to analyze the tumor growth in vivo. Results The levels of TTN-AS1 and ZNF503 were up-regulated, while miR-491-5p expression was reduced in NSCLC tissues and cells. Knockdown of TTN-AS1 or ZNF503 suppressed cell proliferation, migration, invasion and EMT in NSCLC cells. Overexpression of ZNF503 reversed the effect of TTN-AS1 silencing on NSCLC progression. TTN-AS1 could modulate the expression of ZNF503 via sponging miR-491-5p. Furthermore, TTN-AS1 induced tumor growth in vivo. Conclusion Inhibition of TTN-AS1 hindered cell proliferation, migration, invasion and EMT in NSCLC cells by modulating miR-491-5p/ZNF503 axis, providing a promising biomarker for NSCLC treatment.
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Affiliation(s)
- Guanbin Qi
- Department of Respiratory and Critical Care Medicine, Huaihe Hospital, Henan University, Kaifeng, Henan 475000, People's Republic of China
| | - Lei Li
- Department of Respiratory and Critical Care Medicine, Huaihe Hospital, Henan University, Kaifeng, Henan 475000, People's Republic of China
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Zhang Y, Chen B, Wang Y, Zhao Q, Wu W, Zhang P, Miao L, Sun S. NOTCH3 Overexpression and Posttranscriptional Regulation by miR-150 Were Associated With EGFR-TKI Resistance in Lung Adenocarcinoma. Oncol Res 2019; 27:751-761. [PMID: 30732676 PMCID: PMC7848279 DOI: 10.3727/096504018x15372657298381] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Acquired resistance remains a key challenge in epidermal growth factor receptor (EGFR)-tyrosine kinase inhibitors (TKIs) therapy in lung adenocarcinoma (LUAD). Recent studies have shown that Notch signaling is associated with drug resistance. However, its role and possible mechanisms in EGFR-TKI resistance are not yet clear. In our study, we found that among four members of NOTCH1-4, only NOTCH3 was upregulated in LUAD tissues and TKI-resistant cell line (HCC827GR6). Knockdown of NOTCH3 by siRNA significantly inhibited proliferative ability, and decreased colony and sphere formation in HCC827GR6 cells. Then miR-150 was identified as a posttranscriptional regulator of NOTCH3. Its expression was downregulated in LUAD tissues and negatively correlated with NOTCH3 mRNA. The cell proliferation and IC50 of gefitinib were decreased in HCC827GR6 cells transfected with miR-150 mimic, but was reversed when cotransfected with NOTCH3 overexpressed vector. Moreover, we also enrolled 20 patients with advanced LUAD who have taken TKIs as first-line therapy in this study. We found that collagen 1A1 (COL1A1) expression was increased significantly in LUAD tissues both at mRNA and protein levels, and positively correlated with NOTCH3 expression verified in our data and TCGA data. Univariate survival analysis showed that patients with high protein expression of NOTCH3 or COL1A1 were associated with shorter overall survival (OS). Taken together, these results suggest that miR-150/NOTCH3/COL1A1 axis contributed to EGFR-TKI resistance in LUAD, which provide a potential therapeutic target for LUAD treatment.
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Affiliation(s)
- Youwei Zhang
- Department of Medical Oncology, Xuzhou Central Hospital, Xuzhou Medical University, Xuzhou, P.R. China
| | - Bi Chen
- Department of Respiratory Medicine, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, P.R. China
| | - Yongsheng Wang
- Department of Respiratory Medicine, Drum Tower Hospital Affiliated to Medical School of Nanjing University, Nanjing, P.R. China
| | - Qi Zhao
- Department of Respiratory Medicine, Drum Tower Hospital Affiliated to Medical School of Nanjing University, Nanjing, P.R. China
| | - Weijun Wu
- Department of Clinical Pharmacy, Drum Tower Hospital Affiliated to Medical School of Nanjing University, Nanjing, P.R. China
| | - Peiying Zhang
- Department of Medical Oncology, Xuzhou Central Hospital, Xuzhou Medical University, Xuzhou, P.R. China
| | - Liyun Miao
- Department of Respiratory Medicine, Drum Tower Hospital Affiliated to Medical School of Nanjing University, Nanjing, P.R. China
| | - Sanyuan Sun
- Department of Medical Oncology, Xuzhou Central Hospital, Xuzhou Medical University, Xuzhou, P.R. China
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LINC00210 as a miR-328-5p sponge promotes nasopharyngeal carcinoma tumorigenesis by activating NOTCH3 pathway. Biosci Rep 2018; 38:BSR20181168. [PMID: 30341249 PMCID: PMC6240715 DOI: 10.1042/bsr20181168] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2018] [Revised: 08/26/2018] [Accepted: 10/10/2018] [Indexed: 12/19/2022] Open
Abstract
As a kind of essential regulators, long noncoding RNAs (lncRNAs) have attracted a lot of attention in recent years. Nevertheless, the function of lncRNA in nasopharyngeal carcinoma (NPC) remains poorly understood. In the present study, we explained the role and mechanism of LINC00210 in NPC progression. We found that LINC00210 expression was up-regulated in NPC samples. Besides, its overexpression was positively correlated with NPC metastasis while predicting poor prognosis. Based on functional experiments, we revealed that LINC00210 contributed to NPC cell proliferation and invasion in vitro, and promotes tumor growth in vivo. Mechanistically, we identified that LINC00210 was located in the cytoplasm of NPC cells and served as the miR-328-5p sponge. Furthermore, we showed that miR-328-5p targets the 3′ untranslated region (3′-UTR) of NOTCH3. Through inhibiting miR-328-5p activity, LINC00210 promoted NOTCH3 expression in NPC, leading to activation of NOTCH3 signaling pathway. In conclusion, our study indicates LINC00210 promotes NPC progression through modulating proliferation and invasion.
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Cheng Q, Xu X, Jiang H, Xu L, Li Q. Knockdown of long non-coding RNA XIST suppresses nasopharyngeal carcinoma progression by activating miR-491-5p. J Cell Biochem 2018; 119:3936-3944. [PMID: 29219216 DOI: 10.1002/jcb.26535] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Accepted: 10/10/2017] [Indexed: 01/17/2023]
Abstract
Dysregulated long non-coding RNAs (lncRNAs) and microRNAs (miRNAs) play key roles in the development and progression of human cancers. X-inactive specific transcript (XIST), an lncRNA, is known as an oncogene in multiple tumors. However, the roles of XIST and its related miRNAs in nasopharyngeal carcinoma (NPC) are poorly understood. In this study, we found that XIST expression was significantly upregulated in NPC tissues and cell lines. Knockdown of XIST inhibited NPC cell proliferation and invasion and induced apoptosis in vitro, as well as suppressed NPC tumor growth in vivo. Further analysis revealed that XIST and miR-491-5p interact with and repress each other. XIST may function as an endogenous miR-491-5p sponge to regulate the target gene of miR-491-5p. Taken together, these results provide a comprehensive view of the XIST/miR-491-5p axis in human NPC cells and may provide a new therapeutic target for treating NPC.
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Affiliation(s)
- Qiang Cheng
- Department of ENT, Jinshan Hospital Affiliated to Fudan University, Shanghai, China
| | - Xiuyin Xu
- Department of ENT, Jinshan Hospital Affiliated to Fudan University, Shanghai, China
| | - Hui Jiang
- Department of ENT, Jinshan Hospital Affiliated to Fudan University, Shanghai, China
| | - Lingen Xu
- Department of ENT, Jinshan Hospital Affiliated to Fudan University, Shanghai, China
| | - Qiang Li
- Department of ENT, Jinshan Hospital Affiliated to Fudan University, Shanghai, China
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14
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Sun R, Liu Z, Tong D, Yang Y, Guo B, Wang X, Zhao L, Huang C. miR-491-5p, mediated by Foxi1, functions as a tumor suppressor by targeting Wnt3a/β-catenin signaling in the development of gastric cancer. Cell Death Dis 2017; 8:e2714. [PMID: 28358374 PMCID: PMC5386537 DOI: 10.1038/cddis.2017.134] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Revised: 02/23/2017] [Accepted: 02/28/2017] [Indexed: 02/07/2023]
Abstract
Accumulated evidence has suggested that microRNAs (miRNAs) have an important role in tumor development and progression by regulating diverse signaling pathways. However, the precise role of miRNAs in gastric cancer (GC) has not been elucidated. In this study, we describe the function and regulation network of miR-491-5p in GC. miR-491-5p is frequently downregulated in GC tissues compared with adjacent non-cancerous tissues. Forced expression of miR-491-5p significantly inhibits proliferation and colony formation, and promotes apoptosis in GC cells. Through bioinformatic analysis and luciferase assays, we confirm that miR-491-5p targets Wnt3a. Silencing Wnt3a inhibits cell proliferation and induces apoptosis. Similarly, restoration of Wnt3a counteracts the effects of miR-491-5p expression. Moreover, bioinformatic and luciferase assays indicate that the expression of miR-491-5p is regulated by Foxi1, which binds to its promoter and activates miR-491-5p expression. In conclusion, to the best of our knowledge, our findings are the first to demonstrate that Foxi1 is a key player in the transcriptional control of miR-491-5p and that miR-491-5p acts as an anti-oncogene by targeting Wnt3a/β-catenin signaling in GC. Our study reveals that Foxi1/miR-491-5p/Wnt3a/β-catenin signaling is critical in the progression of GC. Targeting the pathway described in this study may open up new prospects to restrict the progression of GC.
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Affiliation(s)
- Ruifang Sun
- Department of Pathology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, 76 Yanta West Road, Xi'an, Shaanxi 710061, P.R. China
- Key Laboratory of Environment and Genes Related to Diseases, Xi'an Jiaotong University, Ministry of Education of China, 76 Yanta West Road, Xi'an, Shaanxi 710061, P.R. China
| | - Zhigang Liu
- Department of Surgical Oncology, The First Affiliated Hospital of Xi'an Jiaotong University, 277 Yanta West Road, Xi'an, Shaanxi 710061, P.R. China
- Department of Thoracic Surgery, Shaanxi Provincial Tumor Hospital, Xi'an Jiaotong University, 309 Yanta West Road, Xi'an, Shaanxi 710061, P.R. China
| | - Dongdong Tong
- Key Laboratory of Environment and Genes Related to Diseases, Xi'an Jiaotong University, Ministry of Education of China, 76 Yanta West Road, Xi'an, Shaanxi 710061, P.R. China
- Department of Cell Biology and Genetics, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, 76 Yanta West Road, Xi'an, Shaanxi 710061, P.R. China
| | - Yang Yang
- Key Laboratory of Environment and Genes Related to Diseases, Xi'an Jiaotong University, Ministry of Education of China, 76 Yanta West Road, Xi'an, Shaanxi 710061, P.R. China
- School of Public Health, Xi'an Jiaotong University Health Science Center, 76 Yanta West Road, Xi'an, Shaanxi 710061, P.R. China
| | - Bo Guo
- Key Laboratory of Environment and Genes Related to Diseases, Xi'an Jiaotong University, Ministry of Education of China, 76 Yanta West Road, Xi'an, Shaanxi 710061, P.R. China
- Department of Cell Biology and Genetics, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, 76 Yanta West Road, Xi'an, Shaanxi 710061, P.R. China
| | - Xiaofei Wang
- Key Laboratory of Environment and Genes Related to Diseases, Xi'an Jiaotong University, Ministry of Education of China, 76 Yanta West Road, Xi'an, Shaanxi 710061, P.R. China
- Department of Cell Biology and Genetics, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, 76 Yanta West Road, Xi'an, Shaanxi 710061, P.R. China
| | - Lingyu Zhao
- Key Laboratory of Environment and Genes Related to Diseases, Xi'an Jiaotong University, Ministry of Education of China, 76 Yanta West Road, Xi'an, Shaanxi 710061, P.R. China
- Department of Cell Biology and Genetics, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, 76 Yanta West Road, Xi'an, Shaanxi 710061, P.R. China
| | - Chen Huang
- Key Laboratory of Environment and Genes Related to Diseases, Xi'an Jiaotong University, Ministry of Education of China, 76 Yanta West Road, Xi'an, Shaanxi 710061, P.R. China
- Department of Cell Biology and Genetics, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, 76 Yanta West Road, Xi'an, Shaanxi 710061, P.R. China
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, 76 Yanta West Road, Xi'an, Shaanxi 710061, P.R. China
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15
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Yin Z, Ding H, He E, Chen J, Li M. Up-regulation of microRNA-491-5p suppresses cell proliferation and promotes apoptosis by targeting FOXP4 in human osteosarcoma. Cell Prolif 2016; 50. [PMID: 27704627 DOI: 10.1111/cpr.12308] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Accepted: 09/03/2016] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND AND OBJECTIVES MicroRNAs are small non-coding RNAs involved in pathogenesis and progression of human malignancies. MicroRNA-491-5p (miR-491-5p) is down-regulated in many human cancers where it would serve as a tumour suppressor. However, the role played by miR-491-5p in pathogenesis of human osteosarcoma has remained largely unknown. This study has been conducted to examine effects of miR-491-5p on migration and proliferation of cells of the SAOS-2 and MG63 osteosarcoma lines, and mechanisms of those effects. MATERIALS AND METHODS Levels of miR-491-5p expression in osteosarcoma tissues and in human osteosarcoma cell lines were studied using qualitative real-time polymerase chain reaction (qRT-PCR) methods. Cell viability was detected using the CCK-8 and EdU assays, while the transwell assay was used to evaluate migration and invasion. Apoptosis was analysed uing flow cytometry and the Hoechst 33342 nuclear staining method. A dual-luciferase reporter system was used to confirm the target gene of miR-491-5p. The electrophoretic mobility shift assay (EMSA) with DIG-labelled double-stranded FOXP4 oligonucleotides was used to confirm whether or not miR-491-5p suppressed FOXP4 activation. RESULTS Cells of osteosarcoma tissues and cell lines had low levels of miR-491-5p expression, but high levels of forkhead-box P4 (FOXP4) expression. Transfection of SAOS-2 and MG63 cells with miR-491-5p mimics inhibited expression of FOXP4 protein, which suppressed cell growth and migration, but induced apoptosis. Dual-luciferase reporter assays confirmed FOXP4 as the target gene for miR-491-5p. Overexpression of miR-491-5p suppressed FOXP4 activity in SAOS-2 and MG63 cells. Knockdown of FOXP4 in SAOS-2 and MG63 cells using an RNAi strategy resulted in reduced levels of cell proliferation and migration, but increased levels of apoptosis. CONCLUSION Our in vitro studies showed that up-regulation of miR-491-5p suppressed proliferation of the human osteosarcoma cells and induced apoptosis by targeting FOXP4. These findings suggest that miR-491-5p could be further studied as a potential clinical diagnostic or predictive biomarker for human osteosarcoma.
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Affiliation(s)
- Zhixun Yin
- Department of Orthopaedic Surgery, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Hongmei Ding
- Department of Anatomy, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Erxing He
- Department of Orthopaedic Surgery, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Jingchen Chen
- Department of Orthopaedic Surgery, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Ming Li
- Department of Orthopaedic Surgery, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
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