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Poliseno L, Lanza M, Pandolfi PP. Coding, or non-coding, that is the question. Cell Res 2024; 34:609-629. [PMID: 39054345 PMCID: PMC11369213 DOI: 10.1038/s41422-024-00975-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Accepted: 04/30/2024] [Indexed: 07/27/2024] Open
Abstract
The advent of high-throughput sequencing uncovered that our genome is pervasively transcribed into RNAs that are seemingly not translated into proteins. It was also found that non-coding RNA transcripts outnumber canonical protein-coding genes. This mindboggling discovery prompted a surge in non-coding RNA research that started unraveling the functional relevance of these new genetic units, shaking the classic definition of "gene". While the non-coding RNA revolution was still taking place, polysome/ribosome profiling and mass spectrometry analyses revealed that peptides can be translated from non-canonical open reading frames. Therefore, it is becoming evident that the coding vs non-coding dichotomy is way blurrier than anticipated. In this review, we focus on several examples in which the binary classification of coding vs non-coding genes is outdated, since the same bifunctional gene expresses both coding and non-coding products. We discuss the implications of this intricate usage of transcripts in terms of molecular mechanisms of gene expression and biological outputs, which are often concordant, but can also surprisingly be discordant. Finally, we discuss the methodological caveats that are associated with the study of bifunctional genes, and we highlight the opportunities and challenges of therapeutic exploitation of this intricacy towards the development of anticancer therapies.
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Affiliation(s)
- Laura Poliseno
- Oncogenomics Unit, Core Research Laboratory, ISPRO, Pisa, Italy.
- Institute of Clinical Physiology, CNR, Pisa, Italy.
| | - Martina Lanza
- Oncogenomics Unit, Core Research Laboratory, ISPRO, Pisa, Italy
- Institute of Clinical Physiology, CNR, Pisa, Italy
- University of Siena, Siena, Italy
| | - Pier Paolo Pandolfi
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Turin, Torino, Italy.
- Renown Institute for Cancer, Nevada System of Higher Education, Reno, NV, USA.
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2
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Li J, Wang Y, Yang Y, Ren X, Qiang Y, Zhang L, Guo L, Liu K. Reactive astrogliosis induced by TNF-α is associated with upregulated AEG-1 together with activated NF-κB pathway in vitro. Neurosci Lett 2024; 837:137899. [PMID: 39019146 DOI: 10.1016/j.neulet.2024.137899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2024] [Revised: 07/09/2024] [Accepted: 07/14/2024] [Indexed: 07/19/2024]
Abstract
Astrocyte-elevated gene-1 (AEG-1/MTDH/LYRIC) has garnered signficant attention in cancer research, yet, its role in inflammation-associated astrogliosis remains underexplored. This study aims to elucidate the effects of AEG-1 on reactive astrogliosis, including proliferation, migration, and glutamate uptake in primary astrocytes derived from rats. We first confirmed the effect of AEG-1 on these parameters. Subsequently, we investigated whether AEG-1 plays a role in the process of pro-inflammation factors such as tumor necrosis factor-alpha (TNF-α) induced astrogliosis. Our findings revealed that AEG-1-lentivirus infection led to hypertrophic cell bodies and enhanced expression of astrogliosis markers, including glial fibrillary acidic protein (GFAP) and vimentin. Additionally, AEG-1 was found to upregulate the mRNA and protein expression levels of EAAT2, a major glutamate transporter in the brain predominantly expressed by astrocytes and responsible for 90% of glutamate clearance. Furthermore, TNF-α was shown to promote astrogliosis, as well as astrocyte proliferation and migration, by upregulating AEG-1 expression through the NF-κB pathway. Collectively, these results suggest a potential role for AEG-1 in inflammation-related astrogliosis.
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Affiliation(s)
- Juanjuan Li
- Ningxia Key Laboratory of Craniocerebral Disease, Ningxia Medical University, Yinchuan 750004, China.
| | - Yahe Wang
- Ningxia Key Laboratory of Craniocerebral Disease, Ningxia Medical University, Yinchuan 750004, China.
| | - Yong Yang
- Ningxia Key Laboratory of Craniocerebral Disease, Ningxia Medical University, Yinchuan 750004, China.
| | - Xiaofan Ren
- Ningxia Key Laboratory of Craniocerebral Disease, Ningxia Medical University, Yinchuan 750004, China.
| | - Yuanyuan Qiang
- Ningxia Key Laboratory of Craniocerebral Disease, Ningxia Medical University, Yinchuan 750004, China.
| | - Lianxiang Zhang
- Ningxia Key Laboratory of Craniocerebral Disease, Ningxia Medical University, Yinchuan 750004, China.
| | - Le Guo
- School of Laboratory Medicine, Ningxia Medical University, Yinchuan 750004, China.
| | - Kunmei Liu
- Ningxia Key Laboratory of Craniocerebral Disease, Ningxia Medical University, Yinchuan 750004, China.
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Jia Q, Zhou Y, Song L, Shi X, Jiang X, Tao R, Wang A, Wu Y, Wei Z, Zhang Y, Li X, Lu Y. Baicalin reduces chronic stress-induced breast cancer metastasis via directly targeting β2-adrenergic receptor. J Pharm Anal 2024; 14:100934. [PMID: 39139999 PMCID: PMC11321295 DOI: 10.1016/j.jpha.2024.01.002] [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: 09/08/2023] [Revised: 12/13/2023] [Accepted: 01/02/2024] [Indexed: 08/15/2024] Open
Abstract
Recent studies have shown that stress can substantially facilitate breast cancer metastasis, which can be reduced by nonselective β1/β2-adrenergic receptor (β1/β2-AR) blocker. However, several side effects were identified. Thus, it is extremely warranted to explore more effective and better-tolerated β2-AR blocker. Currently, we demonstrated that baicalin (BA), a major bioactive component of Scutellaria baicalensis Georgi, could significantly attenuate stress hormones especially epinephrine (Epi)-induced breast cancer cell migration and invasion in vitro. Mechanistically, we identified that β2-AR was a direct target of BA via the drug affinity responsive target stability (DARTS) combined with mass spectrum assay, and BA photoaffinity probe with pull-down assay, which was further confirmed by a couple of biophysical and biochemical assays. Furthermore, we demonstrated that BA could directly bind to the Phe-193 and Phe-289 of β2-AR, subsequently inhibit cyclic adenosine monophosphate-protein kinase A-focal adhesion kinase (cAMP-PKA-FAK) pathway, and thus impede epithelial-mesenchymal transition (EMT), thereby hindering the metastatic progression of the chronic stress coupled with syngeneic and xenograft in vivo orthotopic and tail vein mouse model. These findings firstly identify BA as a potential β2-AR inhibitor in the treatment of stress-induced breast cancer metastasis.
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Affiliation(s)
- Qi Jia
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Yinyin Zhou
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Li Song
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Ximeng Shi
- Jiangsu Key Laboratory for Functional Substances of Chinese Medicine, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Xuan Jiang
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Ruizhi Tao
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Aiyun Wang
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, China
- Jiangsu Joint International Research Laboratory of Chinese Medicine and Regenerative Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
- Jiangsu Collaborative Innovation Center of Traditional Chinese Medicine (TCM) Prevention and Treatment of Tumor, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Yuanyuan Wu
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Zhonghong Wei
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Yinan Zhang
- Jiangsu Key Laboratory for Functional Substances of Chinese Medicine, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Xiaoman Li
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Yin Lu
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, China
- Jiangsu Joint International Research Laboratory of Chinese Medicine and Regenerative Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
- Jiangsu Collaborative Innovation Center of Traditional Chinese Medicine (TCM) Prevention and Treatment of Tumor, Nanjing University of Chinese Medicine, Nanjing, 210023, China
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Huang F, Li Y, Guan L, Hu Y, Zeng M. MiR-30a inhibits silica dust-induced epithelial-mesenchymal transition by targeting Snail. Toxicol In Vitro 2023; 92:105657. [PMID: 37543170 DOI: 10.1016/j.tiv.2023.105657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2023] [Revised: 06/21/2023] [Accepted: 07/30/2023] [Indexed: 08/07/2023]
Abstract
The mechanism of action of MicroRNA-30a(miR-30a) and Snail, a transcription factor, in silica(SiO2) dust-induced pulmonary EMT and secondary pulmonary fibrosis remains elusive. In this study, the cellular EMT model induced by the stimulation of A549 cells with SiO2 was established. A549 cells were transfected with miR-30a mimic and miR-30a inhibitor and the SNAIL gene was silenced to examine the mechanism of miR-30a targeting Snail to regulate silica dust-induced EMT. The results showed that 50 μg/mL SiO2 stained A549 cells for 24 h could induce EMT in A549 cells. Exposure of A549 cells to SiO2 dust decreased miR-30a expression, as well as mRNA and protein expression levels of E-cad. Conversely, SiO2 exposure increased mRNA and protein expression levels of α-SMA, vimentin, and Snail. The miR-30a mimic upregulated mRNA and protein expression levels of E-cadherin in SiO2-induced A549 cells, while downregulating mRNA and protein expression levels of α-SMA, vimentin and Snail. MiR-30a inhibitors have the opposite effect. Silencing the SNAIL gene, followed by SiO2 dust-induced stimulation of A549 cells, could enhance mRNA and protein expression levels of E-cad, whereas those of α-SMA and vimentin were reduced. Altogether, we found that miR-30a directly targeted Snail and inhibited its expression, thereby delaying silica induced pulmonary EMT.
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Affiliation(s)
- Fangcai Huang
- Department of Health Toxicology, Xiangya School of Public Health, Central South University, Changsha, Hunan Province, China
| | - Yupei Li
- The First Affiliated Hospital of Xi'An Jiaotong University, China
| | - Lan Guan
- Department of Health Toxicology, Xiangya School of Public Health, Central South University, Changsha, Hunan Province, China
| | - Yuming Hu
- Hunan Provincial Center For Disease Control And Prevention, China.
| | - Ming Zeng
- Department of Health Toxicology, Xiangya School of Public Health, Central South University, Changsha, Hunan Province, China.
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Abdel Ghafar MT, Soliman NA. Metadherin (AEG-1/MTDH/LYRIC) expression: Significance in malignancy and crucial role in colorectal cancer. Adv Clin Chem 2022; 106:235-280. [PMID: 35152973 DOI: 10.1016/bs.acc.2021.09.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Metadherin (AEG-1/MTDH/LYRIC) is a 582-amino acid transmembrane protein, encoded by a gene located at chromosome 8q22, and distributed throughout the cytoplasm, peri-nuclear region, nucleus, and nucleolus as well as the endoplasmic reticulum (ER). It contains several structural and interacting domains through which it interacts with transcription factors such as nuclear factor-κB (NF-κB), promyelocytic leukemia zinc finger (PLZF), staphylococcal nuclease domain containing 1 (SND1) and lung homing domain (LHD). It is regulated by miRNAs and mediates its oncogenic function via activation of cell proliferation, survival, migration and metastasis, as well as, angiogenesis and chemoresistance via phosphatidylinositol-3-kinase/AKT (PI3K/AKT), NF-κB, mitogen-activated protein kinase (MAPK) and Wnt signaling pathways. In this chapter, metadherin is reviewed highlighting its role in mediating growth, metastasis and chemoresistance in colorectal cancer (CRC). Metadherin, as well as its variants, and antibodies are associated with CRC progression, poorer prognosis, decreased survival and advanced clinico-pathology. The potential of AEG-1/MTDH/LYRIC as a diagnostic and prognostic marker as well as a therapeutic target in CRC is explored.
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Affiliation(s)
| | - Nema A Soliman
- Department of Medical Biochemistry, Faculty of Medicine, Tanta University, Tanta, Egypt
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ceRNAs in Cancer: Mechanism and Functions in a Comprehensive Regulatory Network. JOURNAL OF ONCOLOGY 2021; 2021:4279039. [PMID: 34659409 PMCID: PMC8516523 DOI: 10.1155/2021/4279039] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 09/14/2021] [Accepted: 09/16/2021] [Indexed: 12/15/2022]
Abstract
Noncoding RNAs have been shown with powerful ability in post-transcriptional regulation, enabling intertwined RNA crosstalk and global molecular interaction in a large amount of dysfunctional conditions including cancer. Competing endogenous RNAs (ceRNAs) are those competitively binding with shared microRNAs (miRNAs), freeing their counterparts from miRNA-induced degradation, thus actively influencing and connecting with each other. Constantly updated analytical approaches boost outstanding advancement achieved in this burgeoning hotspot in multilayered intracellular communication, providing new insights into pathogenesis and clinical treatment. Here, we summarize the mechanisms and correlated factors under this RNA interplay and deregulated transcription profile in neoplasm and tumor progression, underscoring the great significance of ceRNAs for diagnostic values, monitoring biomarkers, and prognosis evaluation in cancer.
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Abstract
Competing endogenous RNAs (ceRNAs) containing microRNA response elements can competitively interact with microRNA via miRNA response elements, which can combine non-coding RNAs with protein-coding RNAs through complex ceRNA networks. CeRNAs include non-coding RNAs (long non-coding RNAs, circular RNAs, and transcribed pseudogenes) and protein-coding RNAs (mRNAs). Molecular interactions in ceRNA networks can coordinate many biological processes; however, they may also lead to ceRNA network imbalance and thus contribute to cancer occurrence when disturbed. Recent studies indicate that many dysregulated RNAs derived from lung cancer may function as ceRNAs to regulate multitudinous biological functions for lung cancer, including tumor cell proliferation, apoptosis, growth, invasion, migration, and metastasis. This study therefore reviewed the research progress in the field of non-coding and protein-coding RNAs as ceRNAs in lung cancer, and highlighted validated ceRNAs involved in biological lung cancer functions. Furthermore, the roles of ceRNAs as novel prognostic and diagnostic biomarkers were also discussed. Interpreting the involvement of ceRNAs networks in lung cancer will provide new insight into cancer pathogenesis and treatment strategies.
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Affiliation(s)
- Meilian Zhao
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, China
| | - Jianguo Feng
- Department of Anesthesiology, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, China
| | - Liling Tang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, China
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Wang C, Mao C, Lai Y, Cai Z, Chen W. MMP1 3'UTR facilitates the proliferation and migration of human oral squamous cell carcinoma by sponging miR-188-5p to up-regulate SOX4 and CDK4. Mol Cell Biochem 2020; 476:785-796. [PMID: 33090337 DOI: 10.1007/s11010-020-03944-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Accepted: 10/10/2020] [Indexed: 12/24/2022]
Abstract
Growing evidence indicates that the non-coding 3'-untranslated region (3'UTR) of genes acts as competing endogenous RNAs (ceRNAs) to exert their roles in a number of diseases, including cancer. In the present study, MMP1 messenger RNA was identified to be significantly up-regulated in oral squamous cell carcinoma (OSCC) tissues, and both MMP1 and its 3'UTR promoted tumor growth and cell motility. Further mechanism investigations indicated that MMP1 3'UTR was able to antagonize miR-188-5p; in addition, overexpression of MMP1 3'UTR up-regulated the expression level of SOX4 and CDK4, target genes of miR-188-5p, which have also been identified as oncogenic driver genes in OSCC. Therefore, a ceRNA regulatory network among MMP1, SOX4, and CDK4 mediated via competing for binding to miR-188-5p was proved. Taken together, the present study demonstrates for the first time that MMP1 mRNA participates in the development of OSCC via ceRNA regulatory mechanism and genes involved in the ceRNA network may provide a novel avenue for target therapy.
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Affiliation(s)
- Chengyong Wang
- Department of Oral and Maxillofacial Surgery, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
| | - Chuanqing Mao
- Department of Oral and Maxillofacial Surgery, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
| | - Yongzhen Lai
- Department of Oral and Maxillofacial Surgery, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
| | - Zhiyu Cai
- Department of Oral and Maxillofacial Surgery, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
| | - Weihui Chen
- Department of Oral and Maxillofacial Surgery, Fujian Medical University Union Hospital, Fuzhou, Fujian, China.
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Luo L, Wang M, Li X, Tian J, Zhang K, Tan S, Luo C. Long non-coding RNA LOC285194 in cancer. Clin Chim Acta 2019; 502:1-8. [PMID: 31837299 DOI: 10.1016/j.cca.2019.12.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 11/27/2019] [Accepted: 12/03/2019] [Indexed: 02/07/2023]
Abstract
Long non-coding RNAs (lncRNAs) are non-protein-encoding RNAs that are usually over 200 nucleotides-long. The development of whole-genome sequencing has enabled the identification of several lncRNAs, and the determination of their critical roles in the human tumor process. LOC285194, also known as LSAMP antisense RNA 3 and tumor suppressor candidate 7 (TUSC7), is a >2-kb-long lncRNA comprised of four exons (gene ID: 285194), and located in chr3q13.31. LOC285194 expression is reported to be consistently low in tumor cells and often associated with poor clinical outcomes. Functionally, LOC285194 overexpression has been shown to inhibit cell proliferation, invasion, and migration in vitro and in vivo. Further, LOC285194 mainly suppressed or promoted the expression of related genes through direct or indirect pathways, suggesting that LOC285194 might be a feasible biomarker or therapeutic target in human cancers. Here, we reviewed and summarized existing literature on the functions and mechanisms of LOC285194 in human cancers.
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Affiliation(s)
- Lingli Luo
- Department of Laboratory Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China.
| | - Min Wang
- Department of Laboratory Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China.
| | - Xianping Li
- Department of Laboratory Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China.
| | - Jingjing Tian
- Department of Laboratory Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China.
| | - Kan Zhang
- Department of Laboratory Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China.
| | - Shan Tan
- Department of Laboratory Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China.
| | - Can Luo
- Department of Laboratory Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China.
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Boufraqech M, Nilubol N. Multi-omics Signatures and Translational Potential to Improve Thyroid Cancer Patient Outcome. Cancers (Basel) 2019; 11:E1988. [PMID: 31835496 PMCID: PMC6966476 DOI: 10.3390/cancers11121988] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 12/03/2019] [Indexed: 02/07/2023] Open
Abstract
Recent advances in high-throughput molecular and multi-omics technologies have improved our understanding of the molecular changes associated with thyroid cancer initiation and progression. The translation into clinical use based on molecular profiling of thyroid tumors has allowed a significant improvement in patient risk stratification and in the identification of targeted therapies, and thereby better personalized disease management and outcome. This review compiles the following: (1) the major molecular alterations of the genome, epigenome, transcriptome, proteome, and metabolome found in all subtypes of thyroid cancer, thus demonstrating the complexity of these tumors and (2) the great translational potential of multi-omics studies to improve patient outcome.
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Affiliation(s)
| | - Naris Nilubol
- Surgical Oncology Program, National Cancer Institute, National Institutes of Health, Bethesda, MD 20817, USA;
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Shu X, Dong Z, Zhang M, Shu S. Integrated analysis identifying long non-coding RNAs (lncRNAs) for competing endogenous RNAs (ceRNAs) network-regulated palatal shelf fusion in the development of mouse cleft palate. ANNALS OF TRANSLATIONAL MEDICINE 2019; 7:762. [PMID: 32042778 PMCID: PMC6990043 DOI: 10.21037/atm.2019.11.93] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2019] [Accepted: 11/05/2019] [Indexed: 02/05/2023]
Abstract
BACKGROUND Cleft palate results from the defective palatal fusion of the medial-edge epithelium after cells undergo epithelial-mesenchymal transition, a process that involves regulation by microRNAs (miRNAs). However, in palatal shelf fusion, miRNA regulation by long non-coding RNAs (lncRNAs) when acting as competing endogenous RNAs (ceRNAs) or miRNA sponges, remains unclear. METHODS We systematically analyzed the correlation between lncRNAs, miRNAs, and mRNAs from RNA sequencing profiling in embryonic gestation day 14.5 (E14.5) mouse embryos from control (n=3) and all-trans retinoic acid (ATRA)-treated (n=3) mice. We then constructed a lncRNA-associated ceRNA network. The expression profiles of mRNA, lncRNA, and miRNA were verified by quantitative polymerase chain reaction (qPCR). RESULTS In total, 18 aberrantly expressed miRNAs, 861 mRNAs, and 583 lncRNAs were identified from palate samples of control and ATRA-treated samples. Bioinformatics data and integrative analysis identified 69 lncRNAs, 18 miRNAs, and 78 mRNAs that were aberrantly expressed, and a ceRNA network was then constructed. Finally, we identified a NONMMUT004850.2/NONMMUT024276.2-miR-741-3p/miR-465b-5p-Prkar1α ceRNA network associated with palatal shelf fusion at E14.5. The qPCR results showed that NONMMUT004850.2 (P=5E-05), NONMMUT024276.2 (P=0.0012), and Prkar1α (P=3E-05) were up-regulated, whereas miR-741-3p (P=0.006) and miR-465b-5p (P=1E-04) were down-regulated in ATRA-treated mice compared to the control samples. The qPCR results were in concordance with the RNA sequencing profiling. CONCLUSIONS Our study demonstrated that NONMMUT004850.2/NONMMUT024276.2-miR-741-3p/miR-465b-5p-Prkar1α could potentially serve as an important regulatory mechanism of palatal fusion in the development of the cleft palate.
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Affiliation(s)
- Xuan Shu
- The Cleft Lip and Palate Treatment Center, Second Affiliated Hospital of Shantou University Medical College, Shantou 515041, China
| | - Zejun Dong
- The Cleft Lip and Palate Treatment Center, Second Affiliated Hospital of Shantou University Medical College, Shantou 515041, China
| | - Mingjun Zhang
- The Cleft Lip and Palate Treatment Center, Second Affiliated Hospital of Shantou University Medical College, Shantou 515041, China
| | - Shenyou Shu
- The Cleft Lip and Palate Treatment Center, Second Affiliated Hospital of Shantou University Medical College, Shantou 515041, China
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12
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Long S, Li G. Comprehensive analysis of a long non-coding RNA-mediated competitive endogenous RNA network in glioblastoma multiforme. Exp Ther Med 2019; 18:1081-1090. [PMID: 31316603 PMCID: PMC6601370 DOI: 10.3892/etm.2019.7647] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Accepted: 05/02/2019] [Indexed: 12/29/2022] Open
Abstract
The present bioinformatics study focused on glioblastoma multiforme (GBM; grade IV glioma), a common and aggressive type of primary malignant brain tumor in adults. Long non-coding RNAs (lncRNAs) function as competing endogenous RNAs (ceRNA) to regulate gene expression by interacting with microRNAs (miRNAs) in cancer. These mechanisms and phenomenon are always present but they may be deregulated or activated in cancer. In the present study, a computational method was applied to construct lncRNA-mediated ceRNA networks by integrating lncRNA and mRNA expression profiles and miRNA-mediated interactions, and functional Gene Ontology (GO) and pathway analyses were performed. From the ceRNA network, a total of 7 miRNAs, 159 lncRNAs and 31 mRNAs were obtained that were differentially expressed between GBM and adjacent tissue groups. Through survival analysis based on these RNAs from the ceRNA network, 2 mRNAs and 14 lncRNAs that had a significant impact on the survival of GBM patients were identified. Subsequently, GO and pathway analyses revealed that certain functions of the differentially expressed mRNAs were associated with processes important for the pathogenesis of GBM. The biological functions of several miRNA-mediated ceRNAs in GBM were predicted. The present study provides novel insight that may enhance the understanding of the functions of ceRNAs in GBM, as well as biomarkers for the development of therapies for GBM.
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Affiliation(s)
- Shengrong Long
- Department of Neurosurgery, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Guangyu Li
- Department of Neurosurgery, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
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13
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Yu W, Li D, Ding X, Sun Y, Liu Y, Cong J, Yang J, Sun J, Ning X, Wang H, Xu T. LINC00702 suppresses proliferation and invasion in non-small cell lung cancer through regulating miR-510/PTEN axis. Aging (Albany NY) 2019; 11:1471-1485. [PMID: 30840927 PMCID: PMC6428098 DOI: 10.18632/aging.101846] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Accepted: 02/22/2019] [Indexed: 05/15/2023]
Abstract
BACKGROUND Long non-coding RNAs (lncRNAs) have been consistently reported to be involved in the progression of non-small cell lung cancer (NSCLC). In this study, we aimed to identify aberrantly expressed lncRNAs in NSCLC, in order to explore new therapeutic targets for NSCLC. METHODS Two pairs of NSCLC and adjacent normal tissues were first analyzed by RNA sequencing. The expressions of LINC00702 in 40 pairs patient samples and in 4 NSCLC cell lines was measured by quantitative real-time PCR. Putative target miRNAs of LINC00702 were predicted by the bioinformatics tools. The effect of LINC00702 on tumor growth in vivo was evaluated. RESULTS LINC00702 was significantly down-regulated in patients with NSCLC, which was correlated with tumor size and metastasis. In addition, overexpression of LINC00702 markedly suppressed proliferation and metastasis in NSCLC cells via inducing apoptosis in vitro and in vivo. Moreover, bioinformatics and luciferase reporter assays demonstrated that LINC00702 functioned as a competing endogenous RNA (ceRNA) for miR-510 in NSCLC, and upregulated its target gene PTEN. CONCLUSION Our results indicated that LINC00702 modulated the expression of PTEN gene by acting as a ceRNA for miR-510 in NSCLC. Therefore, LINC00702 may serve as a potential target for the diagnosis and treatment of patients with NSCLC.
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Affiliation(s)
- Wencheng Yu
- Department of Respiratory, the Affiliated Hospital of Qingdao University, Qingdao, Shandong 266003, China
- Equal contribution
| | - Daowei Li
- Department of Respiratory, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250021, China
- Equal contribution
| | - Xiaoyan Ding
- Department of Pathology, the Affiliated Hospital of Qingdao University, Qingdao, Shandong 266003, China
| | - Yong Sun
- Department of Respiratory, the Affiliated Hospital of Qingdao University, Qingdao, Shandong 266003, China
| | - Yanli Liu
- Department of Respiratory, the Affiliated Hospital of Qingdao University, Qingdao, Shandong 266003, China
| | - Jinpeng Cong
- Department of Respiratory, the Affiliated Hospital of Qingdao University, Qingdao, Shandong 266003, China
| | - Jiong Yang
- Department of Geriatrics, the Affiliated Hospital of Qingdao University, Qingdao, Shandong 266003, China
| | - Jian Sun
- Department of Respiratory, the Affiliated Hospital of Qingdao University, Qingdao, Shandong 266003, China
| | - Xuchao Ning
- Department of Respiratory, the Affiliated Hospital of Qingdao University, Qingdao, Shandong 266003, China
| | - Hongmei Wang
- Department of Respiratory, the Affiliated Hospital of Qingdao University, Qingdao, Shandong 266003, China
| | - Tao Xu
- Department of Respiratory, the Affiliated Hospital of Qingdao University, Qingdao, Shandong 266003, China
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14
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Jin H, Shi X, Zhao Y, Peng M, Kong Y, Qin D, Lv X. MicroRNA-30a Mediates Cell Migration and Invasion by Targeting Metadherin in Colorectal Cancer. Technol Cancer Res Treat 2018; 17:1533033818758108. [PMID: 29478367 PMCID: PMC5833214 DOI: 10.1177/1533033818758108] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
MicroRNAs play critical roles in the occurrence and progression in various cancers including colorectal cancer. Here, we found that microRNA-30a expression was significantly downregulated in colorectal cancer tissues compared to adjacent noncancerous tissues, and the suppression levels of microRNA-30a were significantly associated with tumor differentiation and lymph node metastasis. We also discovered that the expression level of microRNA-30a was inversely proportional to the invasive potential of several colorectal cancer cell lines. Moreover, overexpression of microRNA-30a in colorectal cancer cells inhibited activity of cell migration and invasion. Luciferase reporter assay confirmed metadherin could be a direct target of microRNA-30a, as the overexpression of microRNA-30a decreased metadherin expression at both the protein and messenger RNA levels. Furthermore, the knockdown of metadherin expression in SW620 significantly decreased cell metastasis and invasion. The upregulation of metadherin at the protein level negatively correlated with the expression of microRNA-30a in colorectal cancer tissues, and this upregulation could partially attenuate the effect induced by microRNA-30a. These findings indicate that microRNA-30a may act as a tumor suppressor in colorectal cancer and that microRNA-30a represses cell migration and invasion by decreasing metadherin, highlighting the therapeutic potential of microRNA-30a and metadherin in colorectal cancer treatment.
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Affiliation(s)
- Huifang Jin
- 1 Department of Blood Transfusion, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Xiaoqing Shi
- 2 Department of Clinical Laboratory, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Yanteng Zhao
- 1 Department of Blood Transfusion, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Mengle Peng
- 3 Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Yongkui Kong
- 1 Department of Blood Transfusion, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Dongchun Qin
- 2 Department of Clinical Laboratory, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Xianping Lv
- 1 Department of Blood Transfusion, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
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15
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Iqbal MA, Arora S, Prakasam G, Calin GA, Syed MA. MicroRNA in lung cancer: role, mechanisms, pathways and therapeutic relevance. Mol Aspects Med 2018; 70:3-20. [PMID: 30102929 DOI: 10.1016/j.mam.2018.07.003] [Citation(s) in RCA: 276] [Impact Index Per Article: 46.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 07/28/2018] [Accepted: 07/30/2018] [Indexed: 12/29/2022]
Abstract
Lung cancer is the cardinal cause of cancer-related deaths with restricted recourse of therapy throughout the world. Clinical success of therapies is not very promising due to - late diagnosis, limited therapeutic tools, relapse and the development of drug resistance. Recently, small ∼20-24 nucleotides molecules called microRNAs (miRNAs) have come into the limelight as they play outstanding role in the process of tumorigenesis by regulating cell cycle, metastasis, angiogenesis, metabolism and apoptosis. miRNAs essentially regulate gene expression via post-transcriptional regulation of mRNA. Nevertheless, few studies have conceded the role of miRNAs in activation of gene expression. A large body of data generated by numerous studies is suggestive of their tumor-suppressing, oncogenic, diagnostic and prognostic biomarker roles in lung cancer. They have also been implicated in regulating cancer cell metabolism and resistance or sensitivity towards chemotherapy and radiotherapy. Further, miRNAs have also been convoluted in regulation of immune checkpoints - Programmed death 1 (PD-1) and its ligand (PD-L1). These molecules play a significant role in tumor immune escape leading to the generation of a microenvironment favouring tumor growth and progression. Therefore, it is imperative to explore the expression of miRNA and understand its relevance in lung cancer and development of anti-cancer strategies (anti - miRs, miR mimics and micro RNA sponges). In view of the above, the role of miRNA in lung cancer has been dissected and the associated mechanisms and pathways are discussed in this review.
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Affiliation(s)
- Mohammad Askandar Iqbal
- Department of Biotechnology, Faculty of Natural Sciences, Jamia Millia Islamia (A Central University), New Delhi-110025, India.
| | - Shweta Arora
- Department of Biotechnology, Faculty of Natural Sciences, Jamia Millia Islamia (A Central University), New Delhi-110025, India.
| | - Gopinath Prakasam
- School of Life Sciences, Jawaharlal Nehru University, New Delhi-110067, India.
| | - George A Calin
- Department of Experimental Therapeutics, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX-77030, USA.
| | - Mansoor Ali Syed
- Department of Biotechnology, Faculty of Natural Sciences, Jamia Millia Islamia (A Central University), New Delhi-110025, India.
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16
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MiR-30a: A Novel Biomarker and Potential Therapeutic Target for Cancer. JOURNAL OF ONCOLOGY 2018; 2018:5167829. [PMID: 30158978 PMCID: PMC6106977 DOI: 10.1155/2018/5167829] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Accepted: 07/10/2018] [Indexed: 12/26/2022]
Abstract
MicroRNAs (miRNAs) are small, highly conserved noncoding RNAs molecules, consisting of 18–25 nucleotides that regulate gene expression by binding to complementary binding sites within the 3′untranslated region (3′UTR) of target mRNAs. MiRNAs have been involved in regulating gene expression and diverse physiological and pathological processes. Several studies have reported that miR-30a, situated on chromosome 6q.13, is produced by an intronic transcriptional unit. Moreover, miR-30a has demonstrated its role in biological processes, including inhibiting proliferation and metastasis in many tumors, autophagy in chronic myelogenous leukemia, and regulating TGF-b1-induced epithelial-mesenchymal transition. However, based on the pathogenetic relationship between miR-30a and cancer in tumorigenesis, we believe that miR-30a may serve as tumor promising biomarker. Moreover, it would offer a therapeutic target for the treatment of cancer.
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17
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Qu X, Zhao B, Hu M, Ji Z, Xu J, Xia W, Qu Y. Downregulation of TBC1 Domain Family Member 24 (BC1D24) Inhibits Breast Carcinoma Growth via IGF1R/PI3K/AKT Pathway. Med Sci Monit 2018; 24:3987-3996. [PMID: 29893377 PMCID: PMC6029514 DOI: 10.12659/msm.906736] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND TBC1 domain family member 24 (TBC1D24) pathogenic mutations affect its binding to ARF6 and then result in severe impairment of neuronal development. However, there are no reports about the expression and function of TBC1D24 in cancer. The aim of the present study was to evaluate the effect of proliferation, migration, and invasion after silencing TBC1D24 expression in breast cancer MCF-7 cells, and to elucidate the potential mechanism of TBC1D24 in breast cancer. MATERIAL AND METHODS The expression of TBC1D24 in breast cancer tissues and the adjacent non-tumor tissues was determined by S-P immunohistochemistry. The malignant behavior, including proliferation, migration, and invasion ability, was determined after silencing TBC1D24 in breast cancer MCF-7 cells. The expression of IGF1R was determined after silencing TBC1D24. The expression of TBC1D24 and IGF1R was detected after transfecting miR-30a mimics or inhibitors. The effect of TBC1D24 on MCF-7 cells growth in vivo was evaluated by a tumor xenograft study. RESULTS TBC1D24 expression was elevated and was associated with poor outcome in breast carcinoma. TBC1D24 high expression was significantly correlated with unfavorable OS and RFS for breast cancer patients (p<0.05). Silencing TBC1D24 inhibited the proliferation, migration, and invasion ability of MCF-7 cells. TBC1D24 and IGF1R expression were decreased when transfected with miR-30a mimics. However, TBC1D24 and IGF1R expression were increased when transfected with miR-30a inhibitors (p<0.05). Knockdown of TBC1D24 inhibited the expression of IGF1R, PI3K, and p-AKT (p<0.05). Knockdown of TBC1D24 abolished tumorigenicity of MCF-7 cells. The average volume and weight of tumors was lower after silencing TBC1D24 expression (P<0.05). CONCLUSIONS Silencing TBC1D24 inhibited MCF-7 cells growth in vitro and in vivo. TBC1D24 promoted breast carcinoma growth through the IGF1R/PI3K/AKT pathway. TBC1D24 is a potential therapeutic target for breast cancer.
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Affiliation(s)
- Xiusheng Qu
- Department of Radiotherapy and Chemotherapy, First Affiliated Hospital of Jiamusi University, Jiamusi, Heilongjiang, China (mainland)
| | - Bin Zhao
- Department of Anus and Intestine Surgery, First Affiliated Hospital of Jiamusi University, Jiamusi, Heilongjiang, China (mainland)
| | - Min Hu
- Department of General Surgery, First Affiliated Hospital of Jiamusi University, Jiamusi, Heilongjiang, China (mainland)
| | - Zhiwu Ji
- Department of Anus and Intestine Surgery, Affiliated Hospital of Jiamusi University, Jiamusi, Heilongjiang, China (mainland)
| | - Jian Xu
- Department of General Surgery, First Affiliated Hospital of Jiamusi University, Jiamusi, Heilongjiang, China (mainland)
| | - Weibin Xia
- Department of General Surgery, First Affiliated Hospital of Jiamusi University, Jiamusi, Heilongjiang, China (mainland)
| | - Yikun Qu
- Department of General Surgery, First Affiliated Hospital of Jiamusi University, Jiamusi, Heilongjiang, China (mainland)
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18
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Luan N, Wang Y, Liu X. Absent expression of miR-30a promotes the growth of lung cancer cells by targeting MEF2D. Oncol Lett 2018; 16:1173-1179. [PMID: 29963192 DOI: 10.3892/ol.2018.8719] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2017] [Accepted: 11/16/2017] [Indexed: 12/21/2022] Open
Abstract
The microRNA (miR)-30 family has been reported to be aberrantly expressed in several types of cancer. However, its contributions to lung cancer remain to be fully elucidated. Myocyte enhancer factor 2D (MEF2D), an oncogene in liver cancer, has been shown to be aberrantly expressed in lung cancer. In the present study, it was found that MEF2D and miR-30a were inversely correlated in lung cancer samples. Using an online database, it was predicted that miR-30a targeted the 3' untranslated region (UTR) of MEF2D mRNA. The activity of luciferase with MEF2D 3'UTR was suppressed by transfecting cells with miR-30a mimics. The results of western blot analysis showed that the miR-30a mimics also suppressed the MEF2D protein. The miR-30a mimics were able to reduce the growth and colonies of lung cancer cells by suppressing MEF2D. The results of FACS and western blot assays showed that the apoptotic rate was reduced by transfection with the miR-30a mimics. Collectively, the aberrant expression of miR-30a in lung cancer promoted the expression of MEF2D protein. miR-30a inhibited the growth and colony formation of the lung cancer cells by promoting apoptosis.
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Affiliation(s)
- Nianxu Luan
- Department of Pneumology, Qingdao Municipal Hospital, Qingdao, Shandong 266011, P.R. China
| | - Yi Wang
- Department of Pneumology, Qingdao Municipal Hospital, Qingdao, Shandong 266011, P.R. China
| | - Xuedong Liu
- Department of Pneumology, Qingdao Municipal Hospital, Qingdao, Shandong 266011, P.R. China
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19
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Li X, Zheng L, Zhang F, Hu J, Chou J, Liu Y, Xing Y, Xi T. STARD13-correlated ceRNA network inhibits EMT and metastasis of breast cancer. Oncotarget 2018; 7:23197-211. [PMID: 26985770 PMCID: PMC5029620 DOI: 10.18632/oncotarget.8099] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Accepted: 02/28/2016] [Indexed: 12/14/2022] Open
Abstract
Competing endogenous RNAs (ceRNAs) network has been correlated with the initiation and development of cancer. Here, we identify CDH5, HOXD1, and HOXD10 as putative STARD13 ceRNAs and they display concordant patterns with STARD13 in different metastatic potential breast cancer cell lines and tissues. Notably, 3’UTRs of these genes suppress breast cancer metastasis via inhibiting epithelial-mesenchymal transition (EMT) in vitro and in vivo, which are activated through the crosstalk between STARD13 and its ceRNAs in 3’UTR- and miRNA-dependent manners. In addition, Kaplan-Meier survival analysis reveals that mRNA level of STARD13 and its ceRNAs is remarkably associated with survival of breast cancer patients. These results suggest that 3’UTRs of CDH5, HOXD1, and HOXD10 inhibit breast cancer metastasis via serving as STARD13 ceRNAs.
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Affiliation(s)
- Xiaoman Li
- School of Life Science and Technology, China Pharmaceutical University, Nanjing, People's Republic of China.,Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, Nanjing, People's Republic of China
| | - Lufeng Zheng
- School of Life Science and Technology, China Pharmaceutical University, Nanjing, People's Republic of China.,Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, Nanjing, People's Republic of China
| | - Feng Zhang
- School of Life Science and Technology, China Pharmaceutical University, Nanjing, People's Republic of China.,Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, Nanjing, People's Republic of China
| | - Jinhang Hu
- School of Life Science and Technology, China Pharmaceutical University, Nanjing, People's Republic of China.,Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, Nanjing, People's Republic of China
| | - Jinjiang Chou
- School of Life Science and Technology, China Pharmaceutical University, Nanjing, People's Republic of China.,Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, Nanjing, People's Republic of China
| | - Yu Liu
- Department of Biochemistry, School of Life Science and Technology, China Pharmaceutical University, Nanjing, People's Republic of China
| | - Yingying Xing
- School of Life Science and Technology, China Pharmaceutical University, Nanjing, People's Republic of China.,Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, Nanjing, People's Republic of China
| | - Tao Xi
- School of Life Science and Technology, China Pharmaceutical University, Nanjing, People's Republic of China.,Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, Nanjing, People's Republic of China
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20
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Low expression of miR-30a-5p induced the proliferation and invasion of oral cancer via promoting the expression of FAP. Biosci Rep 2018; 38:BSR20171027. [PMID: 29026005 PMCID: PMC5968186 DOI: 10.1042/bsr20171027] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Revised: 09/29/2017] [Accepted: 10/02/2017] [Indexed: 12/30/2022] Open
Abstract
The study aimed at investigating the effects of miR-30a-5p on the biological functions of oral cancer cells and figuring out the potential mechanism. We first verified the low expression of miR-30a-5p and high expression of FAP (Homo sapiens fibroblast activation protein α) in oral cancerous tissues and their negative correlation. Then, the target relationship between miR-30a-5p and FAP was validated by dual luciferase reporter assay and biotin-coupled miRNA pulldown assay. After transfection in Tca-8113 cells and SCC-15 cells, MTT, colony formation, Transwell, and wound healing assays were performed to investigate how miR-30a-5p and FAP adjusted propagation, invasiveness, and migration, respectively. Mounting evidence supported that miR-30a-5p directly targetted FAP and suppressed its expression in oral cavity cancer cells (OSCCs). By suppressing FAP expression, miR-30a-5p significantly inhibited cell propagation, migration, and invasion. Therefore, miR-30a-5p might be a new therapeutic target for oral cancer treatment.
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21
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Yang C, Wu D, Gao L, Liu X, Jin Y, Wang D, Wang T, Li X. Competing endogenous RNA networks in human cancer: hypothesis, validation, and perspectives. Oncotarget 2017; 7:13479-90. [PMID: 26872371 PMCID: PMC4924655 DOI: 10.18632/oncotarget.7266] [Citation(s) in RCA: 160] [Impact Index Per Article: 22.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2015] [Accepted: 01/31/2016] [Indexed: 12/14/2022] Open
Abstract
Non-coding RNAs represent a majority of the human transcriptome. However, less is known about the functions and regulatory mechanisms of most non-coding species. Moreover, little is known about the potential non-coding functions of coding RNAs. The competing endogenous RNAs (ceRNAs) hypothesis is proposed recently. This hypothesis describes potential communication networks among all transcript RNA species mediated by miRNAs and miRNA-recognizing elements (MREs) within RNA transcripts. Here we review the evolution of the ceRNA hypothesis, summarize the validation experiments and discusses the significance and perspectives of this hypothesis in human cancer.
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Affiliation(s)
- Chao Yang
- Department of Pathology, Harbin Medical University, Harbin, China
| | - Di Wu
- Department of Obstetrics and Gynecology, First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Lin Gao
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, China
| | - Xi Liu
- Department of Cardiovascular Disease, Inner Mongolia People's Hospital, Hohhot, China
| | - Yinji Jin
- Department of Pathology, Harbin Medical University, Harbin, China
| | - Dong Wang
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, China
| | - Tianzhen Wang
- Department of Pathology, Harbin Medical University, Harbin, China
| | - Xiaobo Li
- Department of Pathology, Harbin Medical University, Harbin, China
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22
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Song C, Zhang J, Qi H, Feng C, Chen Y, Cao Y, Ba L, Ai B, Wang Q, Huang W, Li C, Sun H. The global view of mRNA-related ceRNA cross-talks across cardiovascular diseases. Sci Rep 2017; 7:10185. [PMID: 28860540 PMCID: PMC5579186 DOI: 10.1038/s41598-017-10547-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Accepted: 08/10/2017] [Indexed: 12/14/2022] Open
Abstract
Competing endogenous RNA (ceRNA) have received wide attention because they are a novel way to regulate genes through sharing microRNAs (miRNAs) that are crucial for complex processes in many diseases. However, no systematic analysis of ceRNA mechanism in cardiovascular disease (CVD) is known. To gain insights into the global properties of ceRNAs in multi-CVDs, we constructed the global view of mRNA-related ceRNA cross-talk in eight major CVDs from ~2,800 samples. We found common features that could be used to uncover similarities among different CVDs and highlighted a common core ceRNA network across CVDs. Comparative analysis of hub ceRNAs in each network revealed three types of hubs, which might play key roles in diverse biological processes. Importantly, by combining CVD-related pathway genes with ceRNA-ceRNA interactions, common modules that might exert functions in specific mechanisms were identified. In addition, our study investigated a potential mechanistic linkage between pathway cross-talk and ceRNA cross-talk. In summary, this study uncovered and systematically characterized global properties of mRNA-related ceRNA cross-talks across CVDs, which may provide a new layer for exploring biological mechanisms and shed new light on cardiology.
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Affiliation(s)
- Chao Song
- Department of Pharmacology, Harbin Medical University-Daqing, Daqing, 163319, China
| | - Jian Zhang
- Department of Medical Informatics, Harbin Medical University-Daqing, Daqing, 163319, China
| | - Hanping Qi
- Department of Pharmacology, Harbin Medical University-Daqing, Daqing, 163319, China
| | - Chenchen Feng
- Department of Medical Informatics, Harbin Medical University-Daqing, Daqing, 163319, China
| | - Yunping Chen
- Department of Pharmacology, Harbin Medical University-Daqing, Daqing, 163319, China
| | - Yonggang Cao
- Department of Pharmacology, Harbin Medical University-Daqing, Daqing, 163319, China
| | - Lina Ba
- Department of Pharmacology, Harbin Medical University-Daqing, Daqing, 163319, China
| | - Bo Ai
- Department of Medical Informatics, Harbin Medical University-Daqing, Daqing, 163319, China
| | - Qiuyu Wang
- Department of Medical Informatics, Harbin Medical University-Daqing, Daqing, 163319, China
| | - Wei Huang
- Department of Pharmacology, Harbin Medical University-Daqing, Daqing, 163319, China
| | - Chunquan Li
- Department of Medical Informatics, Harbin Medical University-Daqing, Daqing, 163319, China.
| | - Hongli Sun
- Department of Pharmacology, Harbin Medical University-Daqing, Daqing, 163319, China.
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23
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Epithelial-to-Mesenchymal Transition and MicroRNAs in Lung Cancer. Cancers (Basel) 2017; 9:cancers9080101. [PMID: 28771186 PMCID: PMC5575604 DOI: 10.3390/cancers9080101] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2017] [Revised: 07/17/2017] [Accepted: 07/26/2017] [Indexed: 12/13/2022] Open
Abstract
Despite major advances, non-small cell lung cancer (NSCLC) remains the major cause of cancer-related death in developed countries. Metastasis and drug resistance are the main factors contributing to relapse and death. Epithelial-to-mesenchymal transition (EMT) is a complex molecular and cellular process involved in tissue remodelling that was extensively studied as an actor of tumour progression, metastasis and drug resistance in many cancer types and in lung cancers. Here we described with an emphasis on NSCLC how the changes in signalling pathways, transcription factors expression or microRNAs that occur in cancer promote EMT. Understanding the biology of EMT will help to define reversing process and treatment strategies. We will see that this complex mechanism is related to inflammation, cell mobility and stem cell features and that it is a dynamic process. The existence of intermediate phenotypes and tumour heterogeneity may be debated in the literature concerning EMT markers, EMT signatures and clinical consequences in NSCLC. However, given the role of EMT in metastasis and in drug resistance the development of EMT inhibitors is an interesting approach to counteract tumour progression and drug resistance. This review describes EMT involvement in cancer with an emphasis on NSCLC and microRNA regulation.
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24
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miR-30a acts as a tumor suppressor by double-targeting COX-2 and BCL9 in H. pylori gastric cancer models. Sci Rep 2017; 7:7113. [PMID: 28769030 PMCID: PMC5540978 DOI: 10.1038/s41598-017-07193-w] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Accepted: 06/23/2017] [Indexed: 02/07/2023] Open
Abstract
Helicobacter pylori (H. pylori) is one of the most important factors that affect the development of gastric cancer, and its mechanism remains un-elucidated. Our present study found that, miR-30a is crucial for regulating the growth and migration of H. pylori infected gastric cancer in vitro by targeting COX-2 and BCL9. In details, double-stranded miR-30a precursor produced two single-stranded and matured miRNAs including miR-30a-3p and miR-30a-5p, which played significant biological functions in two different manners. First, miR-30a-3p inhibited COX-2 expression and regulated nuclear translocation of β-catenin, and second, miR-30a-5p targeted BCL9 to regulate TCF/LEF promoter activity followed by affecting β-catenin downstream target gene expression. In vivo, miR-30a knockout mice were successfully achieved using CRISPR/Cas9 gene editing technology. Compared with H. pylori-infected wild-type mice, H. pylori-infected miR-30a knockout mice showed increased incidence of chronic gastritis, chronic atrophic gastritis, atypical hyperplasia, and other precancerous lesions or adenocarcinoma manifestations in the antral or gastric mucosa of mice, as well as regulation of genes closely associated with tumor development. Taken together, miR-30a acts as a tumor suppressor by double-targeting COX-2 and BCL9, and significantly affects the development of H. pylori-induced gastric cancer, shedding new light on the mechanisms underlying H. pylori-associated gastric cancer.
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25
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Wu S, Yang L, Wu D, Gao Z, Li P, Huang W, Wang X. AEG-1 induces gastric cancer metastasis by upregulation of eIF4E expression. J Cell Mol Med 2017; 21:3481-3493. [PMID: 28661037 PMCID: PMC5706588 DOI: 10.1111/jcmm.13258] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Accepted: 04/26/2017] [Indexed: 12/19/2022] Open
Abstract
Gastric cancer is the third leading cause of cancer-related deaths worldwide, and patients with lymph node, peritoneal and distant metastasis have a poor prognosis. Overexpression of Astrocyte-elevated gene-1 (AEG-1) has been reported to be correlated with the progression and metastasis of gastric cancer. However, its mechanisms are quite unclear. In this study, we found that elevated expression of AEG-1 was correlated with metastasis in human gastric cancer tissues. Moreover, gain- or loss-of-function of AEG-1, respectively, promoted or suppressed epithelial-mesenchymal transition (EMT), migration and invasion of gastric cancer cells. AEG-1 positively regulated eIF4E, MMP-9 and Twist expression. Manipulating eIF4E expression by transfection of overexpression constructs or siRNAs partially eliminated AEG-1-regulated EMT, cell migration and invasion. In addition, overexpression or knockdown of eIF4E promoted or suppressed EMT, cell migration and invasion in parallel with upregulation of MMP-9 and Twist expression, while manipulating eIF4E expression partially abrogated AEG-1-induced MMP-9 and Twist. Finally, silencing of AEG-1 expression not only inhibited tumour growth in parallel with downregulation of eIF4E, MMP-9 and Twist expression in a xenograft nude mouse model, but also suppressed lymph node and peritoneal metastasis of gastric cancer in an orthotopic nude mouse model. These findings suggest that AEG-1 promotes gastric cancer metastasis through upregulation of eIF4E-mediated MMP-9 and Twist, which provides new diagnostic markers and therapeutic targets for cancer metastasis.
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Affiliation(s)
- Shengjie Wu
- Department of Pharmacology, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Li Yang
- Department of General Surgery, Medical Oncology and Pathology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Dandan Wu
- Department of Pharmacology, Nanjing Medical University, Nanjing, Jiangsu, China.,Department of Basic Medicine, Kangda College of Nanjing Medical University, Lianyungang, Jiangsu, China
| | - Zhongyuan Gao
- Department of Pharmacology, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Ping Li
- Department of Pharmacology, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Wenbin Huang
- Department of Pathology, Nanjing Medical University Affiliated Nanjing Hospital (Nanjing First Hospital), Nanjing, Jiangsu, China
| | - Xuerong Wang
- Department of Pharmacology, Nanjing Medical University, Nanjing, Jiangsu, China
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Yang SJ, Yang SY, Wang DD, Chen X, Shen HY, Zhang XH, Zhong SL, Tang JH, Zhao JH. The miR-30 family: Versatile players in breast cancer. Tumour Biol 2017; 39:1010428317692204. [PMID: 28347244 DOI: 10.1177/1010428317692204] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The microRNA family, miR-30, plays diverse roles in regulating key aspects of neoplastic transformation, metastasis, and clinical outcomes in different types of tumors. Accumulating evidence proves that miR-30 family is pivotal in the breast cancer development by controlling critical signaling pathways and relevant oncogenes. Here, we review the roles of miR-30 family members in the tumorigenesis, metastasis, and drug resistance of breast cancer, and their application to predict the prognosis of breast cancer patients. We think miR-30 family members would be promising biomarkers for breast cancer and may bring a novel insight in molecular targeted therapy of breast cancer.
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Affiliation(s)
- Su-Jin Yang
- The Fourth Clinical School of Nanjing Medical University, Nanjing, China
- Department of General Surgery, Nanjing Medical University Affiliated Cancer Hospital Cancer Institute of Jiangsu Province, Nanjing, China
| | - Su-Yu Yang
- Nanjing University of Chinese Medicine, Nanjing, China
| | - Dan-Dan Wang
- The Fourth Clinical School of Nanjing Medical University, Nanjing, China
- Department of General Surgery, Nanjing Medical University Affiliated Cancer Hospital Cancer Institute of Jiangsu Province, Nanjing, China
| | - Xiu Chen
- The Fourth Clinical School of Nanjing Medical University, Nanjing, China
- Department of General Surgery, Nanjing Medical University Affiliated Cancer Hospital Cancer Institute of Jiangsu Province, Nanjing, China
| | - Hong-Yu Shen
- The Fourth Clinical School of Nanjing Medical University, Nanjing, China
- Department of General Surgery, Nanjing Medical University Affiliated Cancer Hospital Cancer Institute of Jiangsu Province, Nanjing, China
| | - Xiao-Hui Zhang
- The Fourth Clinical School of Nanjing Medical University, Nanjing, China
- Center of Clinical Laboratory, Nanjing Medical University Affiliated Cancer Hospital Cancer Institute of Jiangsu Province, Nanjing, China
| | - Shan-Liang Zhong
- Center of Clinical Laboratory, Nanjing Medical University Affiliated Cancer Hospital Cancer Institute of Jiangsu Province, Nanjing, China
| | - Jin-Hai Tang
- Department of General Surgery, Nanjing Medical University Affiliated Cancer Hospital Cancer Institute of Jiangsu Province, Nanjing, China
| | - Jian-Hua Zhao
- Center of Clinical Laboratory, Nanjing Medical University Affiliated Cancer Hospital Cancer Institute of Jiangsu Province, Nanjing, China
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Han X, Zhen S, Ye Z, Lu J, Wang L, Li P, Li J, Zheng X, Li H, Chen W, Li X, Zhao L. A Feedback Loop Between miR-30a/c-5p and DNMT1 Mediates Cisplatin Resistance in Ovarian Cancer Cells. Cell Physiol Biochem 2017; 41:973-986. [PMID: 28222434 DOI: 10.1159/000460618] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Accepted: 01/18/2017] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Many microRNAs (miRs) are dysregulated in cancers, and aberrant miR expression patterns have been suggested to correlate with chemo-resistance of cancer cells. We aim to study the role of miR-30 family members in cisplatin-resistance of ovarian cancer cells. METHODS qRT-PCR was used to compare differential expression levels of miR-30 family members in ovarian cancer cell line A2780 and its cisplatin-resistant derivative CP70. Changes of cisplatin-sensitivity in miR-30a-5p- and miR-30c-5p-overexpressed-CP70 cells and miR-30a-5p- and miR-30c-5p-inhibited-A2780 cells were examined by CCK8 assay and apoptosis analysis using flow cytometry; targets of miR-30a/c-5p were analyzed by western blotting and luciferase reporter assay; methylation regulation of pre-miR-30a/c-5p was examined by methylation specific PCR. RESULTS miR-30a-5p and miR-30c-5p, in contrast to other miR-30 family members, dramatically decreased in cisplatin-resistant CP70 cells due to overexpressed-DNMT1 induced aberrant methylation. miR-30a/c-5p in turn directly inhibited DNMT1 as well as Snail. Forced expression of miR-30a/c-5p or knocking down of DNMT1 and Snail promoted cisplatin susceptibility and partially reversed epithelial-mesenchymal transition (EMT) in CP70 cells, while inhibition of miR-30a/c-5p or ectopic expression of DNMT1 and Snail induced cisplatin resistance and partial EMT in cisplatin-sensitive A2780 cells. CONCLUSIONS A feedback loop between miR-30a/c-5p and DNMT1 is a potent signature for cisplatin-resistance and EMT in ovarian cancer, promising a potential target for improved anti-cancer treatment.
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Guo Y, Sun W, Gong T, Chai Y, Wang J, Hui B, Li Y, Song L, Gao Y. miR-30a radiosensitizes non-small cell lung cancer by targeting ATF1 that is involved in the phosphorylation of ATM. Oncol Rep 2017; 37:1980-1988. [PMID: 28259977 PMCID: PMC5367375 DOI: 10.3892/or.2017.5448] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Accepted: 01/24/2017] [Indexed: 02/07/2023] Open
Abstract
Increasing number of studies report that microRNAs play important roles in radiosensitization. miR-30a has been proved to perform many functions in the development and treatment of cancer, and it is downregulated in non-small cell lung cancer (NSCLC) tissues and cells. This study was conducted to understand if miR-30a plays a role in the radiosensitivity of NSCLC cells. Radiosensitivity was examed by colony survival assay and tumor volume changing in vitro and in vivo, respectively. Bioinformatic analysis and luciferase reporter assays were used to distinguish the candidate target of miR-30a. qRT-PCR and western blotting were carried out to detect the relative expression of mRNAs and proteins. Cell cycle and cell apoptosis were determined by flow cytometry. Our results illustrated miR-30a could increase the radiosensitivity of NSCLC, especially in A549 cell line. In vivo experiment also showed the potential radiosensitizing possibility of miR-30a. Further exploration validated that miR-30a was directly targeting activating transcription factor 1 (ATF1). In studying the ataxia-telangiectasia mutated (ATM) associated effects on cell radiosensitivity, we found that miR-30a could reduce radiation induced G2/M cell cycle arrest and may also affect radiation induced apoptosis. Together, our results demonstrated that miR-30a may modulate the radiosensitivity of NSCLC through reducing the function of ATF1 in phosphorylation of ATM and have potential therapeutic value.
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Affiliation(s)
- Yuyan Guo
- Department of Radiation Oncology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Wenze Sun
- Department of Radiation Oncology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Tuotuo Gong
- Department of Radiation Oncology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Yanlan Chai
- Department of Radiation Oncology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Juan Wang
- Department of Radiation Oncology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Beina Hui
- Department of Radiation Oncology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Yi Li
- Department of Radiation Oncology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Liping Song
- Department of Radiation Oncology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Ying Gao
- Department of Radiation Oncology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
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Zhang M, Sui C, Dai B, Shen W, Lu J, Yang J. PEG10 is imperative for TGF-β1-induced epithelial‑mesenchymal transition in hepatocellular carcinoma. Oncol Rep 2016; 37:510-518. [PMID: 28004118 DOI: 10.3892/or.2016.5282] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Accepted: 11/07/2016] [Indexed: 11/06/2022] Open
Abstract
Substantial evidence indicates that transforming growth factor-beta 1 (TGF-β1) plays a vital role in epithelial-mesenchymal transition (EMT). PEG10 has been shown involved in invasion and metastasis of tumors. The present study investigated the role of PEG10 in TGF-β1-triggered EMT in hepatocellular carcinoma (HCC) progression. Immunohistochemistry and real-time PCR were used to measure the expression level of PEG10 in clinical HCC tissues with or without lymph node metastasis, and normal tissues. The results showed that PEG10 expression is higher in HCC tissues and associated with overall survival (OS) and lymph node metastasis. Moreover, PEG10 expression level was remarkably higher in hepatic cancer cells than the normal hepatic cell line L02. In the present study, we constructed an adenovirus vector containing the coding area of PEG10 (Ad-PEG10) and infected HepG2 cells and found that overexpression of PEG10 promoted the cell migration, invasion ability and EMT of HepG2 cells. TGF-β1 acted on HepG2 cells by enhancing cell migration, invasion, EMT and upregulating PEG10 expression level. However, cells pretreated with adenovirus vector of PEG10 shRNAs (Ad-shRNA1 and Ad-shRNA2) did not occur EMT prior to TGF-β1 stimulation. Moreover, TGF-β1 did not increase the migration and invasion of cells with PEG10 knockdown and overexpression of PEG10 confers chemoresistance to HepG2 cells. Accordingly, sufficient PEG10 expression level is essential for TGF-β1 induced EMT and associated with the chemoresistance in HepG2 cells.
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Affiliation(s)
- Minfeng Zhang
- Department of Special Medical Care Ⅰ and Liver Transplantation, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai 200438, P.R. China
| | - Chengjun Sui
- Department of Special Medical Care Ⅰ and Liver Transplantation, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai 200438, P.R. China
| | - Binghua Dai
- Department of Special Medical Care Ⅰ and Liver Transplantation, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai 200438, P.R. China
| | - Weifeng Shen
- Department of Special Medical Care Ⅰ and Liver Transplantation, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai 200438, P.R. China
| | - Jiongjiong Lu
- Department of Special Medical Care Ⅰ and Liver Transplantation, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai 200438, P.R. China
| | - Jiamei Yang
- Department of Special Medical Care Ⅰ and Liver Transplantation, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai 200438, P.R. China
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30
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Metadherin facilitates podocyte apoptosis in diabetic nephropathy. Cell Death Dis 2016; 7:e2477. [PMID: 27882943 PMCID: PMC5260885 DOI: 10.1038/cddis.2016.335] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Revised: 09/23/2016] [Accepted: 09/23/2016] [Indexed: 02/01/2023]
Abstract
Apoptosis, one of the major causes of podocyte loss, has been reported to have a vital role in diabetic nephropathy (DN) pathogenesis, and understanding the mechanisms underlying the regulation of podocyte apoptosis is crucial. Metadherin (MTDH) is an important oncogene, which is overexpressed in most cancers and responsible for apoptosis, metastasis, and poor patient survival. Here we show that the expression levels of Mtdh and phosphorylated p38 mitogen-activated protein kinase (MAPK) are significantly increased, whereas those of the microRNA-30 family members (miR-30s) are considerably reduced in the glomeruli of DN rat model and in high glucose (HG)-induced conditionally immortalized mouse podocytes (MPC5). These levels are positively correlated with podocyte apoptosis rate. The inhibition of Mtdh expression, using small interfering RNA, but not Mtdh overexpression, was shown to inhibit HG-induced MPC5 apoptosis and p38 MAPK pathway, and Bax and cleaved caspase 3 expression. This was shown to be similar to the effects of p38 MAPK inhibitor (SB203580). Furthermore, luciferase assay results demonstrated that Mtdh represents the target of miR-30s. Transient transfection experiments, using miR-30 microRNA (miRNA) inhibitors, led to the increase in Mtdh expression and induced the apoptosis of MPC5, whereas the treatment with miR-30 miRNA mimics led to the reduction in Mtdh expression and apoptosis of HG-induced MPC5 cells in comparison with their respective controls. Our results demonstrate that Mtdh is a potent modulator of podocyte apoptosis, and that it represents the target of miR-30 miRNAs, facilitating podocyte apoptosis through the activation of HG-induced p38 MAPK-dependent pathway.
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31
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Tsikitis VL, Potter A, Mori M, Buckmeier JA, Preece CR, Harrington CA, Bartley AN, Bhattacharyya AK, Hamilton SR, Lance MP, Thompson PA. MicroRNA Signatures of Colonic Polyps on Screening and Histology. Cancer Prev Res (Phila) 2016; 9:942-949. [PMID: 27658891 DOI: 10.1158/1940-6207.capr-16-0086] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Revised: 08/10/2016] [Accepted: 08/31/2016] [Indexed: 12/13/2022]
Abstract
Colorectal cancer and adenoma adjacent to cancer exhibit distinct microRNA (miRNA) alterations in an apparent mucosa-to-adenocarcinoma sequence. The pattern of microRNAs in screen-detected polyps in relation to histologic features and cancer risk has not been investigated. miRNA expression analysis was performed on normal mucosa (NM), hyperplastic polyps (HP), tubular adenomas (TA), tubulovillous adenomas or high-grade dysplasia (TVHG), and serrated polyps [sessile serrated adenoma/polyps (SSA/P) and traditional serrated adenomas (TSA)] in biopsy specimens from 109 patients undergoing screening/surveillance colonoscopy. Generalized linear models were used to identify differentially expressed miRNAs by histologic type and logistic regression to identify miRNA predictors of histopathology. False discovery rate (FDR) was used to control for multiple comparisons. We identified 99 miRNAs differing in at least one of five histopathologic groups (FDR ≤0.05). In a comparison of HPNM versus TVHG, the top most upregulated and downregulated miRNAs in HPNM included miR-145, -143, -107, -194, and -26a (upregulated), and miR-663, -1268, -320b, -1275, and -320b (downregulated; FDR P < 0.05). miR-145 and -619 showed high accuracy to discriminate low- from high-risk polyps without serrated histology (TVHG vs. HPNM + TA; CI, 95.6%), whereas miR-124, -143, and -30a showed high accuracy of separating high-risk polyps (TVHG + TSA) from low-risk polyps (HPNM + TA + SSA/P; CI, 96.0%). For TSAs, miR-125b and -199a were uniquely downregulated relative to HPNMs, and miR-335, -222, and -214 discriminated between non-serrated and serrated histology. Our data support the presence of colorectal cancer-associated miRNA alterations in screen-detected adenomas that may be useful for risk stratification for surveillance interval planning. Cancer Prev Res; 9(12); 942-9. ©2016 AACR.
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Affiliation(s)
| | - Amiee Potter
- Oregon Health and Science University, Integrated Genomics Laboratory, Portland, Oregon
| | - Motomi Mori
- Oregon Health and Science University, Integrated Genomics Laboratory, Portland, Oregon.,Oregon Health and Science University, Knight Cancer Institute, Portland, Oregon
| | | | | | | | - Angela N Bartley
- Integrated Healthcare Associates, Dept of Anatomic and Clinical Pathology, Ann Arbor, Michigan
| | | | - Stanley R Hamilton
- Integrated Healthcare Associates, Dept of Anatomic and Clinical Pathology, Ann Arbor, Michigan
| | - M Peter Lance
- Department of Molecular and Cell Biology, University of Arizona Cancer Center, Tucson, Arizona
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32
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Park SY, Choi M, Park D, Jeong M, Ahn KS, Lee J, Fisher PB, Yun M, Lee SG. AEG-1 promotes mesenchymal transition through the activation of Rho GTPases in human glioblastoma cells. Oncol Rep 2016; 36:2641-2646. [DOI: 10.3892/or.2016.5106] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Accepted: 05/31/2016] [Indexed: 11/06/2022] Open
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Zou M, Duan Y, Wang P, Gao R, Chen X, Ou Y, Liang M, Wang Z, Yuan Y, Wang L, Zhu H. DYT-40, a novel synthetic 2-styryl-5-nitroimidazole derivative, blocks malignant glioblastoma growth and invasion by inhibiting AEG-1 and NF-κB signaling pathways. Sci Rep 2016; 6:27331. [PMID: 27251589 PMCID: PMC4890319 DOI: 10.1038/srep27331] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Accepted: 05/16/2016] [Indexed: 12/13/2022] Open
Abstract
Astrocyte elevated gene-1 (AEG-1) has been explored as a novel target for human glioma therapy, thus reflecting its potential contribution to gliomagenesis. In the present study, we investigated the effect of DYT-40, a novel synthetic 2-styryl-5-nitroimidazole derivative, on cell growth and invasion in glioblastoma (GBM) and uncovered the underlying mechanisms of this molecule. DYT-40 induces the intrinsic mitochondrial pathway of apoptosis and inhibits the epithelial-mesenchymal transition (EMT) and invasion of GBM cell lines. Furthermore, DYT-40 deactivates PI3K/Akt and MAPK pathways, suppresses AEG-1 expression, and inhibits NF-κB nuclear translocation. DYT-40 reduced the tumor volumes in a rat C6 glioma model by apoptotic induction. Moreover, HE staining demonstrated that the glioma rat model treated with DYT-40 exhibited better defined tumor margins and fewer invasive cells to the contralateral striatum compared with the vehicle control and temozolomide-treated rats. Microscopic examination showed a decrease in AEG-1-positive cells in DYT-40-treated rats compared with the untreated controls. DYT-40-treatment increases the in vivo apoptotic response of glioma cells to DYT-40 treatment by TUNEL staining. In conclusion, the inhibitory effects of DYT-40 on growth and invasion in GBM suggest that DYT-40 might be a potential AEG-1 inhibitor to prevent the growth and motility of malignant glioma.
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Affiliation(s)
- Meijuan Zou
- Department of Pharmacology, School of Basic Medical Sciences, Nanjing Medical University, Nanjing 210029, China.,State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing 210093, China
| | - Yongtao Duan
- State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing 210093, China
| | - Pengfei Wang
- State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing 210093, China
| | - Rui Gao
- Department of Pharmacology, School of Basic Medical Sciences, Nanjing Medical University, Nanjing 210029, China
| | - Xuguan Chen
- Department of Pharmacology, School of Basic Medical Sciences, Nanjing Medical University, Nanjing 210029, China
| | - Yingwei Ou
- Department of Pharmacology, School of Basic Medical Sciences, Nanjing Medical University, Nanjing 210029, China
| | - Mingxing Liang
- Department of Pharmacology, School of Basic Medical Sciences, Nanjing Medical University, Nanjing 210029, China
| | - Zhongchang Wang
- State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing 210093, China
| | - Yi Yuan
- Jiangsu Key Laboratory of Oral Diseases; Department of oral and maxillofacial surgery, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing 210029, China
| | - Li Wang
- Department of Breast Surgery, First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Hailiang Zhu
- Department of Pharmacology, School of Basic Medical Sciences, Nanjing Medical University, Nanjing 210029, China.,State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing 210093, China
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Zheng L, Li X, Meng X, Chou J, Hu J, Zhang F, Zhang Z, Xing Y, Liu Y, Xi T. Competing endogenous RNA networks of CYP4Z1 and pseudogene CYP4Z2P confer tamoxifen resistance in breast cancer. Mol Cell Endocrinol 2016; 427:133-42. [PMID: 26980484 DOI: 10.1016/j.mce.2016.03.012] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2016] [Revised: 02/27/2016] [Accepted: 03/09/2016] [Indexed: 12/14/2022]
Abstract
Patients with estrogen receptor α (ERα)-positive breast cancer can be treated with endocrine therapy using anti-estrogens such as tamoxifen; nonetheless, patients often develop resistance limiting the success of breast cancer treatment. The potential mechanisms remain elusive. In detail, many miRNAs have been associated with breast cancer tamoxifen resistance, but no studies have addressed the role of miRNA-mediated competitive endogenous RNAs network (ceRNET) in tamoxifen resistance. The ceRNET between CYP4Z1 and pseudogene CYP4Z2P has been revealed to promote breast cancer angiogenesis. However, its function in tamoxifen resistance remains unclear. Here we report CYP4Z1 and CYP4Z2P were downregulated in MCF-7 cells compared with tamoxifen-resistant MCF-7-TamR cells. Enforced upregulation of CYP4Z1- or CYP4Z2P-3'UTR level renders MCF-7 Cells resistant to tamoxifen. We find that overexpression of CYP4Z1- or CYP4Z2P-3'UTR enhances the transcriptional activity of ERα through the activation of ERα phosphorylation. Furthermore, we find that CYP4Z1- and CYP4Z2P-3'UTRs increase ERα activity dependent on cyclin-dependent kinase 3 (CDK3). Reporter gene and western blot assays revealed that CYP4Z1- and CYP4Z2P-3'UTRs act as CDK3 ceRNAs. More importantly, the blocking of CYP4Z1- and CYP4Z2P-3'UTRs reversed tamoxifen resistance in MCF-7-TamR cells. Our data demonstrates that the ceRNET between CYP4Z1 and pseudogene CYP4Z2P acts as a sub-ceRNET to promote CDK3 expression in ER-positive breast cancer and is a potential therapeutic target for treatment of tamoxifen-resistant breast cancer.
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Affiliation(s)
- Lufeng Zheng
- School of Life Science and Technology, China Pharmaceutical University, Nanjing 210009, PR China; Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, Nanjing 210009, PR China
| | - Xiaoman Li
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, PR China
| | - Xia Meng
- School of Life Science and Technology, China Pharmaceutical University, Nanjing 210009, PR China; Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, Nanjing 210009, PR China
| | - Jinjiang Chou
- School of Life Science and Technology, China Pharmaceutical University, Nanjing 210009, PR China; Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, Nanjing 210009, PR China
| | - Jinhang Hu
- School of Life Science and Technology, China Pharmaceutical University, Nanjing 210009, PR China; Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, Nanjing 210009, PR China
| | - Feng Zhang
- School of Life Science and Technology, China Pharmaceutical University, Nanjing 210009, PR China; Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, Nanjing 210009, PR China
| | - Zhiting Zhang
- School of Life Science and Technology, China Pharmaceutical University, Nanjing 210009, PR China; Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, Nanjing 210009, PR China
| | - Yingying Xing
- School of Life Science and Technology, China Pharmaceutical University, Nanjing 210009, PR China; Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, Nanjing 210009, PR China
| | - Yu Liu
- Department of Biochemistry, School of Life Science and Technology, China Pharmaceutical University, Nanjing 210009, PR China
| | - Tao Xi
- School of Life Science and Technology, China Pharmaceutical University, Nanjing 210009, PR China; Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, Nanjing 210009, PR China.
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35
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Wang Z, Tang ZY, Yin Z, Wei YB, Liu LF, Yan B, Zhou KQ, Nian YQ, Gao YL, Yang JR. Metadherin regulates epithelial-mesenchymal transition in carcinoma. Onco Targets Ther 2016; 9:2429-36. [PMID: 27143938 PMCID: PMC4844438 DOI: 10.2147/ott.s104556] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Metadherin (MTDH) was first identified in primary human fetal astrocytes exposed to HIV-1 in 2002 and then recognized as an important oncogene mediating tumorigenesis, progression, invasiveness, and metastasis of carcinomas. Epithelial–mesenchymal transition (EMT) is a vital process in embryonic development, organ repair, and cancer progression. MTDH and EMT have also been proved to be related to the prognosis of patients with cancers. Recent studies reveal a relationship between MTDH overexpression and EMT in some malignancies. This review highlights the overexpression of MTDH and EMT in cancers and their correlations in clinical studies. Positive correlations have been established between MTDH and mesenchymal biomarkers, and negative correlations between MTDH and epithelial biomarkers have also been established. Furthermore, experiments reveal EMT regulated by MTDH, and some signal pathways have been established. Some anticancer drugs targeting MTDH and EMT are introduced in this review. Some perspectives concerning EMT regulation by MTDH are also presented in this review.
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Affiliation(s)
- Zhao Wang
- Department of Urology, The Second Xiangya Hospital, Central South University, Fu Rong District, Changsha, People's Republic of China; Department of Urology, Xiangya Hospital, Central South University, Kai Fu District, People's Republic of China
| | - Zheng-Yan Tang
- Department of Urology, Xiangya Hospital, Central South University, Kai Fu District, People's Republic of China
| | - Zhuo Yin
- Department of Urology, The Second Xiangya Hospital, Central South University, Fu Rong District, Changsha, People's Republic of China
| | - Yong-Bao Wei
- Department of Urology, The Second Xiangya Hospital, Central South University, Fu Rong District, Changsha, People's Republic of China; Department of Urology, Fujian Provincial Hospital, The Teaching Hospital of Fujian Medical University, Fuzhou, People's Republic of China
| | - Long-Fei Liu
- Department of Urology, Xiangya Hospital, Central South University, Kai Fu District, People's Republic of China
| | - Bin Yan
- Department of Urology, The Second Xiangya Hospital, Central South University, Fu Rong District, Changsha, People's Republic of China
| | - Ke-Qin Zhou
- Department of Urology, The Second Xiangya Hospital, Central South University, Fu Rong District, Changsha, People's Republic of China
| | - Ye-Qi Nian
- Department of Urology, The Second Xiangya Hospital, Central South University, Fu Rong District, Changsha, People's Republic of China
| | - Yun-Liang Gao
- Department of Urology, The Second Xiangya Hospital, Central South University, Fu Rong District, Changsha, People's Republic of China
| | - Jin-Rui Yang
- Department of Urology, The Second Xiangya Hospital, Central South University, Fu Rong District, Changsha, People's Republic of China
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36
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Vartak-Sharma N, Nooka S, Ghorpade A. Astrocyte elevated gene-1 (AEG-1) and the A(E)Ging HIV/AIDS-HAND. Prog Neurobiol 2016; 157:133-157. [PMID: 27090750 DOI: 10.1016/j.pneurobio.2016.03.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2015] [Revised: 03/11/2016] [Accepted: 03/19/2016] [Indexed: 12/23/2022]
Abstract
Recent attempts to analyze human immunodeficiency virus (HIV)-1-induced gene expression changes in astrocytes uncovered a multifunctional oncogene, astrocyte elevated gene-1 (AEG-1). Our previous studies revealed that AEG-1 regulates reactive astrocytes proliferation, migration and inflammation, hallmarks of aging and CNS injury. Moreover, the involvement of AEG-1 in neurodegenerative disorders, such as Huntington's disease and migraine, and its induction in the aged brain suggest a plausible role in regulating overall CNS homeostasis and aging. Therefore, it is important to investigate AEG-1 specifically in aging-associated cognitive decline. In this study, we decipher the common mechanistic links in cancer, aging and HIV-1-associated neurocognitive disorders that likely contribute to AEG-1-based regulation of astrocyte responses and function. Despite AEG-1 incorporation into HIV-1 virions and its induction by HIV-1, tumor necrosis factor-α and interleukin-1β, the specific role(s) of AEG-1 in astrocyte-driven HIV-1 neuropathogenesis are incompletely defined. We propose that AEG-1 plays a central role in a multitude of cellular stress responses involving mitochondria, endoplasmic reticulum and the nucleolus. It is thus important to further investigate AEG-1-based cellular and molecular regulation in order to successfully develop better therapeutic approaches that target AEG-1 to combat cancer, HIV-1 and aging.
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Affiliation(s)
- Neha Vartak-Sharma
- Department of Cell Biology and Immunology, University of North Texas Health Science Center, Fort Worth, TX, 76107-2699, USA; Institute for Integrated Cell-Material Sciences, Kyoto University, Japan; Institute for Stem Cell Research and Regenerative Medicine, National Center for Biological Sciences, Tata Institute of Fundamental Research, Bangalore, India
| | - Shruthi Nooka
- Department of Cell Biology and Immunology, University of North Texas Health Science Center, Fort Worth, TX, 76107-2699, USA
| | - Anuja Ghorpade
- Department of Cell Biology and Immunology, University of North Texas Health Science Center, Fort Worth, TX, 76107-2699, USA.
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Abstract
The competitive endogenous RNA (ceRNA) hypothesis proposes that transcripts with shared microRNA (miRNA) binding sites compete for post-transcriptional control. This hypothesis has gained substantial attention as a unifying function for long non-coding RNAs, pseudogene transcripts and circular RNAs, as well as an alternative function for messenger RNAs. Empirical evidence supporting the hypothesis is accumulating but not without attracting scepticism. Recent studies that model transcriptome-wide binding-site abundance suggest that physiological changes in expression of most individual transcripts will not compromise miRNA activity. In this Review, we critically evaluate the evidence for and against the ceRNA hypothesis to assess the impact of endogenous miRNA-sponge interactions.
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Affiliation(s)
- Daniel W Thomson
- Garvan Institute of Medical Research, 384 Victoria Street, Darlinghurst NSW 2010, Australia.,St Vincent's Clinical School, UNSW Australia, Kensington NSW 2052, Australia
| | - Marcel E Dinger
- Garvan Institute of Medical Research, 384 Victoria Street, Darlinghurst NSW 2010, Australia.,St Vincent's Clinical School, UNSW Australia, Kensington NSW 2052, Australia
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Wang Y, Hou J, He D, Sun M, Zhang P, Yu Y, Chen Y. The Emerging Function and Mechanism of ceRNAs in Cancer. Trends Genet 2016; 32:211-224. [PMID: 26922301 PMCID: PMC4805481 DOI: 10.1016/j.tig.2016.02.001] [Citation(s) in RCA: 137] [Impact Index Per Article: 17.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2015] [Revised: 01/19/2016] [Accepted: 02/02/2016] [Indexed: 01/17/2023]
Abstract
Complex diseases, such as cancer, are often associated with aberrant gene expression at both the transcriptional and post-transcriptional level. Over the past several years, competing endogenous RNAs (ceRNAs) have emerged as an important class of post-transcriptional regulators that alter gene expression through a miRNA-mediated mechanism. Recent studies in both solid tumors and hematopoietic malignancies showed that ceRNAs have significant roles in cancer pathogenesis by altering the expression of key tumorigenic or tumor-suppressive genes. Characterizing the identity, function, and mechanism of the ceRNAs will not only further our fundamental understanding of RNA-mediated cancer pathogenesis, but may also shed light on the development of new RNA-based therapeutic strategies for treating cancer.
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Affiliation(s)
- Yunfei Wang
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Jiakai Hou
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Dandan He
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Ming Sun
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Peng Zhang
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Yonghao Yu
- Department of Biochemistry, The University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Yiwen Chen
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA.
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Yuan Y, Zheng S, Li Q, Xiang X, Gao T, Ran P, Sun L, Huang Q, Xie F, Du J, Xiao C. Overexpression of miR-30a in lung adenocarcinoma A549 cell line inhibits migration and invasion via targeting EYA2. Acta Biochim Biophys Sin (Shanghai) 2016; 48:220-8. [PMID: 26837415 DOI: 10.1093/abbs/gmv139] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Accepted: 11/23/2015] [Indexed: 12/17/2022] Open
Abstract
MicroRNAs (miRNAs) are a class of small non-coding RNAs and closely related to the pathogenesis of cancers. Increasing evidence indicates that miR-30a plays a profound role during the development of cancers. However, the functions of miR-30a in non-small-cell lung cancer (NSCLC) are still ambiguous. Here we found that miR-30a was decreased in lung adenocarcinoma A549 cells and in tissue samples from 14 patients by qRT-PCR, and also found that overexpression of miR-30a in A549 cells inhibited migration and invasion but not cell proliferation and cell cycle progression by wound-healing assay, matrigel invasion assay, MTS-based cell proliferation assay, and flow cytometry-based cell cycle analysis, respectively. We further explored the potential mechanism of miR-30a-mediated gene regulation in lung adenocarcinoma cell lines. EYA2 is a predicted target of miR-30a, and it has been found that EYA2 expression is inhibited by miR-30a in breast cancer cells. We demonstrated that EYA2 is a direct target of miR-30a by using the dual-luciferase reporter assay in A549 cells and showed that EYA2 protein levels are inversely correlated with miR-30a expression in A549 and BEAS-2B cells. In addition, we also confirmed the rescue effects of EYA2 overexpression in A549 cells by cotransfection with EYA2 expression vector and miR-30a mimics. Taken together, our results demonstrate that overexpression of miR-30a in lung adenocarcinoma A549 cells can inhibit cell migration and invasion, which is partially attributed to the decrease of EYA2 expression. Our findings suggest that miR-30a may be used as a new potential target for the treatment of lung adenocarcinoma in the future.
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Affiliation(s)
- Yuncang Yuan
- School of Medicine, Yunnan University, Kunming 650091, China
| | - Shangyong Zheng
- School of Medicine, Yunnan University, Kunming 650091, China
| | - Qian Li
- School of Medicine, Yunnan University, Kunming 650091, China
| | - Xudong Xiang
- Department of Thoracic Surgery, Third Affiliated Hospital of Kunming Medical University, Kunming 650118, China
| | - Tangxin Gao
- School of Medicine, Yunnan University, Kunming 650091, China
| | - Pengzhan Ran
- School of Medicine, Yunnan University, Kunming 650091, China
| | - Lijuan Sun
- School of Medicine, Yunnan University, Kunming 650091, China
| | - Qionglin Huang
- School of Medicine, Yunnan University, Kunming 650091, China
| | - Fei Xie
- School of Medicine, Yunnan University, Kunming 650091, China
| | - Jing Du
- School of Medicine, Yunnan University, Kunming 650091, China
| | - Chunjie Xiao
- School of Medicine, Yunnan University, Kunming 650091, China
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MiR-30a Inhibits the Epithelial--Mesenchymal Transition of Podocytes through Downregulation of NFATc3. Int J Mol Sci 2015; 16:24032-47. [PMID: 26473838 PMCID: PMC4632736 DOI: 10.3390/ijms161024032] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2015] [Revised: 08/31/2015] [Accepted: 09/29/2015] [Indexed: 11/20/2022] Open
Abstract
MicroRNAs (miRNAs) possess an important regulating effect among numerous renal diseases, while their functions in the process of epithelial-to-mesenchymal transition (EMT) after podocyte injury remain unclear. The purpose of our study is to identify the potential functions of miR-30a in EMT of podocytes and explore the underlying mechanisms of miR-30a in the impaired podocytes. The results revealed that downregulation of miR-30a in podocyte injury animal models and patients, highly induced the mesenchymal markers of EMT including Collagen I, Fibronectin and Snail. Furthermore, overexpression of miR-30a enhances epithelial markers (E-cadherin) but diminished mesenchymal markers (Collagen I, Fibronectin and Snail) in podocytes. In addition, we established miR-30a target NFATc3, an important transcription factor of Non-canonical Wnt signaling pathway. More importantly, our findings demonstrated that the augmentation of miR-30a level in podocytes inhibits the nuclear translocation of NFATc3 to protect cytoskeleton disorder or rearrangement. In summary, we uncovered the protective function of miR30a targeting NFATc3 in the regulation of podocyte injury response to EMT.
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Qi X, Zhang DH, Wu N, Xiao JH, Wang X, Ma W. ceRNA in cancer: possible functions and clinical implications. J Med Genet 2015; 52:710-8. [PMID: 26358722 DOI: 10.1136/jmedgenet-2015-103334] [Citation(s) in RCA: 937] [Impact Index Per Article: 104.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2015] [Accepted: 08/21/2015] [Indexed: 01/01/2023]
Abstract
Competing endogenous RNAs (ceRNAs) are transcripts that can regulate each other at post-transcription level by competing for shared miRNAs. CeRNA networks link the function of protein-coding mRNAs with that of non-coding RNAs such as microRNA, long non-coding RNA, pseudogenic RNA and circular RNA. Given that any transcripts harbouring miRNA response element can theoretically function as ceRNAs, they may represent a widespread form of post-transcriptional regulation of gene expression in both physiology and pathology. CeRNA activity is influenced by multiple factors such as the abundance and subcellular localisation of ceRNA components, binding affinity of miRNAs to their sponges, RNA editing, RNA secondary structures and RNA-binding proteins. Aberrations in these factors may deregulate ceRNA networks and thus lead to human diseases including cancer. In this review, we introduce the mechanisms and molecular bases of ceRNA networks, discuss their roles in the pathogenesis of cancer as well as methods of predicting and validating ceRNA interplay. At last, we discuss the limitations of current ceRNA theory, propose possible directions and envision the possibilities of ceRNAs as diagnostic biomarkers or therapeutic targets.
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Affiliation(s)
- Xiaolong Qi
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Da-Hong Zhang
- Department of Clinical Oncology, Huai'an First People's Hospital, Nanjing Medical University, Huai'an, China
| | - Nan Wu
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Jun-Hua Xiao
- Department of Gastroenterology, Shanghai East Hospital, Tongji University, School of Medicine, Shanghai, China
| | - Xiang Wang
- Department of Neurology, The Affiliated Huai'an Hospital of Xuzhou Medical College and The Second People's Hospital of Huai'an, Huai'an, China
| | - Wang Ma
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
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Tang R, Liang L, Luo D, Feng Z, Huang Q, He R, Gan T, Yang L, Chen G. Downregulation of MiR-30a is Associated with Poor Prognosis in Lung Cancer. Med Sci Monit 2015; 21:2514-20. [PMID: 26305739 PMCID: PMC4554363 DOI: 10.12659/msm.894372] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Recent reports have suggested that miR-30a plays a tumor-suppressive role in various cancers. However, miR-30a has not been completely studied in non-small lung cancer (NSCLC). Thus, the aim of the present study was to clarify the association between the expression of miR-30a and the clinicopathological features in NSCLC patients. MATERIAL AND METHODS Total RNA of miR-30a was extracted from 125 pairs of NSCLC patients (male 75, female 50) and their matching normal tissues. The miR-30a level was detected by using quantitative real-time polymerase chain reaction (qRT-PCR). Simultaneously, the 2-ΔCq method was used to calculate the correlation between miR-30a expression and the clinicopathological parameters and prognosis of NSCLC patients. RESULTS MiR-30a expression was significantly down-regulated in NSCLC tissues (4.0696±2.4178) compared to their non-tumor lung tissues (7.4530±3.0561, P<0.001). Level of miR-30a was negatively correlated to tumor size (r=-0.197, P=0.028), lymphatic metastasis (r=-0.312, P<0.001), clinical TNM stage (r=-0.299, P=0.001), pathological grading (I/II vs. III, r=-0.224, P=0.001), and histological classification (r=-0.299, P=0.001). Survival time was 3.23±2.18 months in the low miR-30a expression group, remarkably shorter than that of the high expression group (20.72±11.63 months, P<0.001). CONCLUSIONS MiR-30a may be regarded as a tumor suppressor in NSCLC, and it could become a prognostic marker and potential therapeutic target for NSCLC.
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Affiliation(s)
- Ruixue Tang
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang, China (mainland)
| | - Lu Liang
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang, China (mainland)
| | - Dianzhong Luo
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang, China (mainland)
| | - Zhenbo Feng
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang, China (mainland)
| | - Qiuxia Huang
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang, China (mainland)
| | - Rongquan He
- Department of Medical Oncology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang, China (mainland)
| | - Tingqing Gan
- Department of Medical Oncology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang, China (mainland)
| | - Lihua Yang
- Department of Medical Oncology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang, China (mainland)
| | - Gang Chen
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, Nanning, Nanning, Guangxi Zhuang, China (mainland)
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Ren F, Ding H, Huang S, Wang H, Wu M, Luo D, Dang Y, Yang L, Chen G. Expression and clinicopathological significance of miR-193a-3p and its potential target astrocyte elevated gene-1 in non-small lung cancer tissues. Cancer Cell Int 2015; 15:80. [PMID: 26257582 PMCID: PMC4528689 DOI: 10.1186/s12935-015-0227-8] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2015] [Accepted: 07/14/2015] [Indexed: 12/31/2022] Open
Abstract
Background Aberrant expression of miR-193a-3p and astrocyte elevated gene-1 (AEG-1) have been revealed to be related to the tumorigenesis of various cancers, including non-small cell lung cancer (NSCLC). However, the significance of miR-193a-3p and its correlation with AEG-1 in NSCLC has not been explored. The purpose of this study was to evaluate the association between miR-193a-3p and AEG-1 and their relationship with the clinicopathological features in NSCLC patients. Methods Via online in silico prediction, complementary sequences were found between miR-193a-3p and the 3′-untranslated region of AEG-1. Three independent cohorts were applied in the current study. Firstly, miR-193a-3p level was detected in 125 cases of NSCLC with quantitative real-time PCR (qRT-PCR). Secondly, AEG-1 protein level was evaluated in 339 cases of lung cancers with immunohistochemistry. Finally, the relationship between miR-193a-3p and AEG-1 protein expression was verified in another group with 65 cases of NSCLC. Results The results showed that miR-193a-3p level was decreased in NSCLC tissues and significantly negatively related to tumor size (r = −0.277, P = 0.002), clinical TNM stage (r = −0.226, P = 0.011), lymph node metastasis (r = −0.186, P = 0.038), epidermal growth factor receptor (EGFR) protein level (r = −0.272, P = 0.041). On the contrary, AEG-1 protein expression was up-regulated in NSCLC and positively relative to tumor size (r = 0.240, P < 0.001), TNM stages (r = 0.164, P = 0.002) and lymph node metastasis (r = 0.232, P < 0.001) in NSCLC patients. In addition, miR-193a-3p was found to be inversely associated with AEG-1 protein expression in the third cohort (r = −0.564, P < 0.001). Conclusion In conclusion, miR-193a-3p and AEG-1 might be responsible for the carcinogenesis and aggressiveness of NSCLC. AEG-1 has the potential to be one of the targeted genes of miR-193a-3p. However, future in vitro and in vivo experiments are needed to verify this hypothesis.
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Affiliation(s)
- Fanghui Ren
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, 6 Shuangyong Road, Nanning, 530021 Guangxi Zhuang Autonomous Region People's Republic of China
| | - Hua Ding
- Department of Radiotherapy, First Affiliated Hospital of Guangxi Medical University, 6 Shuangyong Road, Nanning, 530021 Guangxi Zhuang Autonomous Region People's Republic of China
| | - Suning Huang
- Department of Radiotherapy, First Affiliated Hospital of Guangxi Medical University, 6 Shuangyong Road, Nanning, 530021 Guangxi Zhuang Autonomous Region People's Republic of China
| | - Hanlin Wang
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, 6 Shuangyong Road, Nanning, 530021 Guangxi Zhuang Autonomous Region People's Republic of China
| | - Mei Wu
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, 6 Shuangyong Road, Nanning, 530021 Guangxi Zhuang Autonomous Region People's Republic of China
| | - Dianzhong Luo
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, 6 Shuangyong Road, Nanning, 530021 Guangxi Zhuang Autonomous Region People's Republic of China
| | - Yiwu Dang
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, 6 Shuangyong Road, Nanning, 530021 Guangxi Zhuang Autonomous Region People's Republic of China
| | - Lihua Yang
- Department of Medical Oncology, First Affiliated Hospital of Guangxi Medical University, 6 Shuangyong Road, Nanning, 530021 Guangxi Zhuang Autonomous Region People's Republic of China
| | - Gang Chen
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, 6 Shuangyong Road, Nanning, 530021 Guangxi Zhuang Autonomous Region People's Republic of China
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Zheng T, Chou J, Zhang F, Liu Y, Ni H, Li X, Zheng L, Tang T, Jin L, Xi T. CXCR4 3'UTR functions as a ceRNA in promoting metastasis, proliferation and survival of MCF-7 cells by regulating miR-146a activity. Eur J Cell Biol 2015; 94:458-69. [PMID: 26095299 DOI: 10.1016/j.ejcb.2015.05.010] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2015] [Revised: 05/27/2015] [Accepted: 05/28/2015] [Indexed: 12/14/2022] Open
Abstract
CXCR4 is the most common chemokine receptor expressed on tumor cells, and it is closely correlated with cancer cell stemness. This study was carried out to explore whether CXCR4 could function as a competitive endogenous RNA to promote metastasis, proliferation and survival in MCF-7 breast cancer cells. We validated that CXCR4, together with TRAF6 and EGFR, was directly targeted by miR-146a in MCF-7 cells. Overexpression of CXCR4 3'UTR inhibited the activity of miR-146a, thus elevating the expression of CXCR4, TRAF6 and EGFR. These oncoproteins further activated NF-κB pathway and promoted the proliferation, migration, invasion and anti-apoptotic activity of MCF-7 cells. Collectively, our study provided new insights into the function of CXCR4 in breast cancer: it promotes tumor progression as both a protein-coding gene and a non-coding RNA, complicating the mechanism by which oncogenes promote tumor progression.
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Affiliation(s)
- Tianjing Zheng
- School of Life Science and Technology, China Pharmaceutical University, #24 Tongjiaxiang, Nanjing 210009, China; Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, #24 Tongjiaxiang, Nanjing 210009, China
| | - Jinjiang Chou
- School of Life Science and Technology, China Pharmaceutical University, #24 Tongjiaxiang, Nanjing 210009, China; Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, #24 Tongjiaxiang, Nanjing 210009, China
| | - Feng Zhang
- School of Life Science and Technology, China Pharmaceutical University, #24 Tongjiaxiang, Nanjing 210009, China; Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, #24 Tongjiaxiang, Nanjing 210009, China
| | - Yu Liu
- School of Life Science and Technology, China Pharmaceutical University, #24 Tongjiaxiang, Nanjing 210009, China; State Key Laboratory of Natural Medicines, School of Life Science and Technology, China Pharmaceutical University, #24 Tongjiaxiang, Nanjing 210009, China
| | - Haiwei Ni
- Medical college of Yangzhou University, #11, Huaihailu Road, Yangzhou, China
| | - Xiaoman Li
- School of Life Science and Technology, China Pharmaceutical University, #24 Tongjiaxiang, Nanjing 210009, China; Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, #24 Tongjiaxiang, Nanjing 210009, China
| | - Lufeng Zheng
- School of Life Science and Technology, China Pharmaceutical University, #24 Tongjiaxiang, Nanjing 210009, China; Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, #24 Tongjiaxiang, Nanjing 210009, China
| | - Tingting Tang
- School of Life Science and Technology, China Pharmaceutical University, #24 Tongjiaxiang, Nanjing 210009, China; Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, #24 Tongjiaxiang, Nanjing 210009, China
| | - Liang Jin
- School of Life Science and Technology, China Pharmaceutical University, #24 Tongjiaxiang, Nanjing 210009, China; State Key Laboratory of Natural Medicines, School of Life Science and Technology, China Pharmaceutical University, #24 Tongjiaxiang, Nanjing 210009, China
| | - Tao Xi
- School of Life Science and Technology, China Pharmaceutical University, #24 Tongjiaxiang, Nanjing 210009, China; Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, #24 Tongjiaxiang, Nanjing 210009, China.
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Gurzu S, Turdean S, Kovecsi A, Contac AO, Jung I. Epithelial-mesenchymal, mesenchymal-epithelial, and endothelial-mesenchymal transitions in malignant tumors: An update. World J Clin Cases 2015; 3:393-404. [PMID: 25984514 PMCID: PMC4419103 DOI: 10.12998/wjcc.v3.i5.393] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Revised: 02/12/2015] [Accepted: 04/02/2015] [Indexed: 02/05/2023] Open
Abstract
Epithelial-to-mesenchymal transition (EMT) represents conversion of an epithelial cell in an elongated cell with mesenchymal phenotype, which can occur in physiologic and pathologic processes such as embryogenesis (type 1 EMT), wound healing and/or fibrosis (type 2 EMT) and malignant tumors (type 3 EMT). The proliferation rate, metastasizing and recurrence capacity, as also the individualized response at chemotherapics, in both epithelial and mesenchymal malignant tumors is known to be influenced by reversible switch between EMT and mesenchymal-to-epithelial transition (MET). Although much research work has already been done in these fields, the specific molecular pathways of EMT, relating to the tumor type and tumor localization, are yet to be elucidated. In this paper, based on the literature and personal experience of the authors, an update in the field of EMT vs MET in epithelial and mesenchymal tumors is presented. The authors tried to present the latest data about the particularities of these processes, and also of the so-called endothelial-to-mesenchymal transition, based on tumor location. The EMT-angiogenesis link is discussed as a possible valuable parameter for clinical follow-up and targeted therapeutic oncologic management. The paper begins with presentation of the basic aspects of EMT, its classification and assessment possibilities, and concludes with prognostic and therapeutic perspectives. The particularities of EMT and MET in gastric and colorectal carcinomas, pancreatic cancer, hepatocellular and cholangiocarcinomas, and lung, breast and prostate cancers, respectively in sarcomas and gastrointestinal stromal tumors are presented in detail.
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Poliseno L, Pandolfi PP. PTEN ceRNA networks in human cancer. Methods 2015; 77-78:41-50. [PMID: 25644446 DOI: 10.1016/j.ymeth.2015.01.013] [Citation(s) in RCA: 95] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2014] [Revised: 01/19/2015] [Accepted: 01/21/2015] [Indexed: 12/14/2022] Open
Abstract
In multiple human cancer types, a close link exists between the expression levels of Phosphatase and Tensin Homolog deleted on chromosome 10 (PTEN) and its oncosuppressive activities. Therefore, an in depth understanding of the molecular mechanisms by which PTEN expression is modulated is crucial in order to achieve a comprehensive knowledge of its biological roles. In recent years, the competition between PTEN mRNA and other RNAs for shared microRNA molecules has emerged as one such mechanism and has brought into focus the coding-independent activities of PTEN and other mRNAs. In this review article, we examine the competing endogenous RNA (ceRNA) partners of PTEN that have been identified so far. We also discuss how PTEN-centered ceRNA networks can contribute to a deeper understanding of PTEN function and tumorigenesis.
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Affiliation(s)
- Laura Poliseno
- Oncogenomics Unit, Core Research Laboratory, Istituto Toscano Tumori, Pisa, Italy; Institute of Clinical Physiology, CNR, Pisa, Italy.
| | - Pier Paolo Pandolfi
- Cancer Research Institute, Beth Israel Deaconess Cancer Center, Department of Medicine and Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.
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Cheng DL, Xiang YY, Ji LJ, Lu XJ. Competing endogenous RNA interplay in cancer: mechanism, methodology, and perspectives. Tumour Biol 2015; 36:479-88. [PMID: 25604144 DOI: 10.1007/s13277-015-3093-z] [Citation(s) in RCA: 110] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2014] [Accepted: 01/08/2015] [Indexed: 02/07/2023] Open
Abstract
Competing endogenous RNAs (ceRNAs) refer to RNA transcripts, such as mRNAs, non-coding RNAs, pseudogene transcripts, and circular RNAs, that can regulate each other by competing for the same pool of miRNAs. ceRNAs involve in the pathogenesis of several common cancers such as prostate cancer, liver cancer, breast cancer, lung cancer, gastric cancer, endometrial cancer, and so on. ceRNA activity is determined by factors such as miRNA/ceRNA abundance, ceRNAs binding affinity to miRNAs, RNA editing, and RNA-binding proteins. The alteration of any of these factors may lead to ceRNA network imbalance and thus contribute to cancer initiation and progression. There are generally three steps in ceRNA research conductions: ceRNA prediction, ceRNA validation, and ceRNA functional investigation. Deciphering ceRNA interplay in cancer provides new insight into cancer pathogenesis and opportunities for therapy exploration. In this review, we try to give readers a concise and reliable illustration on the mechanism, functions, research approaches, and perspective of ceRNA in cancer.
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Affiliation(s)
- Dong-Liang Cheng
- Department of Cardiothoracic Surgery, Shiyan Taihe Hospital, Hubei University of Medicine, Shiyan City, Hubei Province, China
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