1
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Guo J, Xie T, Zhang S. Linc00239 Promotes Colorectal Cancer Development via MicroRNA-182-5p/Metadherin Axis. Biochem Genet 2024; 62:1727-1741. [PMID: 37695492 DOI: 10.1007/s10528-023-10510-w] [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: 06/12/2023] [Accepted: 08/23/2023] [Indexed: 09/12/2023]
Abstract
Long non-coding RNAs (lncRNAs) are associated with colorectal cancer (CRC); however, CRC-related linc00239 functions have not been fully elucidated. Prognostic analysis of patients with CRC with linc00239 overexpression was performed using data from The Cancer Genome Atlas database. Cell Counting Kit-8 and Transwell were used to determine linc00239 functions for CRC cells. The lncRNA-miRNA-mRNA interaction network was used to screen target miRNAs and mRNAs regulated by linc00239. Quantitative real-time polymerase chain reaction and western blotting were used to confirm the miRNA and mRNA expression. Furthermore, a miRNA inhibitor was transfected into CRC cells, and cell function was evaluated. Results indicated a high linc00239 expression in the tumor tissue of patients with CRC. Transfection of linc00239 siRNA into SW480 and LOVO cells decreased cell proliferation, cell migration, and invasion. MiR-182-5p/metadherin (MTDH) axis is a downstream pathway of linc00239. MTDH expression, the activity of cell proliferation, migration, and invasion, which were suppressed by linc00239 siRNA, were partially attenuated when linc00239 siRNA and miR-182-5p inhibitor were co-transfected into the CRC cells. Furthermore, miR-182-5p expression was decreased and MTDH expression was promoted in CRC tissues. Altogether, linc00239 may promote CRC development through the miR-182-5p/MTDH axis.
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Affiliation(s)
- Jianian Guo
- Department of Gastroenterology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510260, China
| | - Tingting Xie
- Department of Gastroenterology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510260, China
| | - Shi Zhang
- Department of Surgical Gastroenterology, The Second Affiliated Hospital of Guangzhou Medical University, No. 250 Changgang East Road, Guangzhou, 510260, China.
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2
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Yang L, Yang L, Kong F, Zhang S, Pu P, Li X, Song Z. Bioinformatic analysis reveals an association between Metadherin with breast cancer prognosis and tumor immune infiltration. Sci Rep 2024; 14:1949. [PMID: 38253625 PMCID: PMC10803374 DOI: 10.1038/s41598-024-52403-x] [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: 08/26/2023] [Accepted: 01/18/2024] [Indexed: 01/24/2024] Open
Abstract
Breast cancer metastasis and invasion are both promoted by the oncoprotein Metadherin (MTDH). However, the the role of Metadherin in breast cancer progression and its role in the immune microenvironment. Are not clear. A bioinformatic analysis was performed to demonstrate the prognostic value of Metadherin in BC. In the present study, we found that Metadherin is overexpressed in BC and is significantly correlated with individual cancer stage, age, subclasses, menopause and nodal metastasis status. Metadherin overexpression was associated with a significant decrease in OS and DSS. Cox multivariate analysis indicated that Metadherin was an independent negative prognostic indicator for OS and DSS. Moreover, Metadherin hypomethylation status was associated with poor prognosis. A negative correlation was also noted between Metadherin overexpression and the number of plasmacytoid dendritic cells, cluster of differentiation 8+ T cells, and natural killer cells. Association patterns varied with different subtypes. Various associations between Metadherin levels and immune cell surface markers were revealed. A total of 40 groups of BC and adjacent normal breast tissue samples were collected. Metadherin mRNA was detected by PCR, and its expression levels in BC tissues were significantly increased compared with those noted in normal tissues. The expression levels of Metadherin were also measured in normal and BC cell lines, respectively, and similar conclusions were obtained. The Metadherin mRNA levels were knocked down in SK-BR3 and MDA-MB-231 cell lines and the cell proliferative and migratory activities were determined using Cell Counting Kit-8 and scratch assays, respectively. The results indicated that the cell proliferative and migratory abilities were reduced following knockdown of Metadherin expression. Therefore, Metadherin may be considered as a novel prognostic biomarker in BC.
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Affiliation(s)
- Lixian Yang
- Department of Breast Surgery, Xingtai People's Hospital, No. 818 Xiangdu district, Xingtai, 054000, Hebei, People's Republic of China
| | - Liu Yang
- Breast Center, The Fourth Hospital of Hebei Medical University, 169 Changjiang Avenue, Shijiazhuang, 050000, Hebei, People's Republic of China
| | - Fanting Kong
- Department of Breast Surgery, Xingtai People's Hospital, No. 818 Xiangdu district, Xingtai, 054000, Hebei, People's Republic of China
| | - Shiyu Zhang
- Department of Breast Surgery, Xingtai People's Hospital, No. 818 Xiangdu district, Xingtai, 054000, Hebei, People's Republic of China
| | - Pengpeng Pu
- Department of Breast Surgery, Xingtai People's Hospital, No. 818 Xiangdu district, Xingtai, 054000, Hebei, People's Republic of China
| | - Xiaowei Li
- Department of Breast Surgery, Xingtai People's Hospital, No. 818 Xiangdu district, Xingtai, 054000, Hebei, People's Republic of China
| | - Zhenchuan Song
- Breast Center, The Fourth Hospital of Hebei Medical University, 169 Changjiang Avenue, Shijiazhuang, 050000, Hebei, People's Republic of China.
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3
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Jothimani G, Ganesan H, Pathak S, Banerjee A. Molecular Characterization of Primary and Metastatic Colon Cancer Cells to Identify Therapeutic Targets with Natural Compounds. Curr Top Med Chem 2022; 22:2598-2615. [PMID: 35366775 DOI: 10.2174/1568026622666220401161511] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 02/01/2022] [Accepted: 02/10/2022] [Indexed: 01/20/2023]
Abstract
BACKGROUND Metastasis is the world's leading cause of colon cancer morbidity. Due to its heterogeneity, it has been challenging to understand primary to metastatic colon cancer progression and find a molecular target for colon cancer treatment. OBJECTIVES The current investigation aimed to characterize the immune and genotypic profiles of primary and metastatic colon cancer cell lines and identify a molecular target for colon cancer treatment. METHODS Colony-forming potential, migration and invasion potential, cytokine profiling, miRNA, and mRNA expression were examined. Molecular docking for the Wnt signaling proteins with various plant compounds was performed. RESULTS Colony formation, migration, and invasion potential were significantly higher in metastatic cells. The primary and metastatic cells' local immune and genetic status revealed TGF β-1, IL-8, MIP-1b, I-TAC, GM-CSF, and MCP-1 were highly expressed in all cancer cells. RANTES, IL-4, IL- 6, IFNγ, and G-CSF were less expressed in cancer cell lines. mRNA expression analysis displayed significant overexpression of proliferation, cell cycle, and oncogenes, whereas apoptosis cascade and tumor suppressor genes were significantly down-regulated in metastatic cells more evidently. Most importantly, the results of molecular docking with dysregulated Wnt signaling proteins shows that peptide AGAP and coronaridine had maximum hydrogen bonds to β-catenin and GSK3β with a better binding affinity. CONCLUSION This study emphasized genotypic differences between the primary and metastatic colon cancer cells, delineating the intricate mechanisms to understand the primary to metastatic advancement. The molecular docking aided in understanding the future molecular targets for bioactive- based colon cancer therapeutic interventions.
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Affiliation(s)
- Ganesan Jothimani
- Department of Medical Biotechnology, Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute (CHRI), Chettinad Academy of Research and Education (CARE), Chennai, India
| | - Harsha Ganesan
- Department of Medical Biotechnology, Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute (CHRI), Chettinad Academy of Research and Education (CARE), Chennai, India
| | - Surajit Pathak
- Department of Medical Biotechnology, Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute (CHRI), Chettinad Academy of Research and Education (CARE), Chennai, India
| | - Antara Banerjee
- Department of Medical Biotechnology, Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute (CHRI), Chettinad Academy of Research and Education (CARE), Chennai, India
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4
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Yang L, Liu S, Yang L, Xu B, Wang M, Kong X, Song Z. miR‑217‑5p suppresses epithelial‑mesenchymal transition and the NF‑κB signaling pathway in breast cancer via targeting of metadherin. Oncol Lett 2022; 23:162. [PMID: 35399330 PMCID: PMC8987938 DOI: 10.3892/ol.2022.13282] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Accepted: 03/11/2022] [Indexed: 11/17/2022] Open
Abstract
MicroRNAs (miRNAs) have been associated with a number of human malignancies, including breast cancer (BC). However, the expression, biological function and fundamental underlying mechanism of miR-217-5p in BC remain unclear. Therefore, in the present study, the expression levels of miR-217-5p and metadherin (MTDH) were examined in BC tissues and BC cell lines using reverse transcription-quantitative PCR. Cell Counting Kit-8 assays, cell proliferation, wound healing assays, Transwell assays and western blotting were used to examine the effects of miR-217-5p on cell proliferation, migration, the epithelial-mesenchymal transition (EMT) and NF-κB signaling pathway expression. The direct relationship between miR-217-5p and MTDH was assessed using a dual-luciferase reporter assay. The results demonstrated that significantly reduced expression levels of miR-217-5p but significantly increased mRNA expression levels of MTDH were observed in BC tissues from 35 patients with BC compared with non-tumor breast tissues. Furthermore, BC cell lines SK-BR3 and BT549 expressed miR-217-5p at markedly lower levels and MTDH at markedly higher levels compared with the breast epithelial MCF10A cell line. miR-217-5p overexpression significantly inhibited cell proliferation, invasion and migration and suppressed the EMT in BC cells. miR-217-5p overexpression also inhibited the NF-κB signaling pathway by markedly decreasing p65 mRNA and protein expression levels but significantly increasing IκBα expression levels. Furthermore, miR-217-5p knockdown markedly increased MTDH mRNA and protein expression levels. The expression levels of miR-217-5p were negatively correlated with those of MTDH in BC tissues. These results suggested that restoration of MTDH expression levels could potentially attenuate the inhibitory effects of miR-217-5p overexpression on BC cell proliferation. Therefore, in conclusion miR-217-5p overexpression may inhibit cell migration, invasion, the EMT and NF-κB signaling pathway in BC via targeting of MTDH. miR-217-5p may serve as an important potential target in BC therapy.
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Affiliation(s)
- Lixian Yang
- Breast Center, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050000, P.R. China
| | - Shuo Liu
- Breast Center, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050000, P.R. China
| | - Liu Yang
- Breast Center, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050000, P.R. China
| | - Bin Xu
- Breast Center, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050000, P.R. China
| | - Meiqi Wang
- Breast Center, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050000, P.R. China
| | - Xiangshun Kong
- Department of Breast Surgery, Xingtai People's Hospital, Xingtai, Hebei 054000, P.R. China
| | - Zhenchuan Song
- Breast Center, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050000, P.R. 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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6
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Lin LW, Lai PS, Chen YY, Chen CY. Expression of astrocyte-elevated gene-1 indicates prognostic value of fluoropyrimidine-based adjuvant chemotherapy in resectable stage III colorectal cancer. Pathol Int 2021; 71:752-764. [PMID: 34528330 DOI: 10.1111/pin.13160] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Accepted: 08/12/2021] [Indexed: 11/30/2022]
Abstract
It is unclear which prognostic factor such as pathological features and gene mutation are majorly relevant for stage III disease and whether they aid in determining patients who will be benefit from postoperative adjuvant chemotherapy. The expression of astrocyte-elevated gene-1 (AEG-1), thymidylate synthase (TS), excision repair cross-complementation group 1 (ERCC1), epidermal growth factor receptor (EGFR), and vascular endothelial growth factor (VEGF) was examined to investigate their role in adjuvant chemotherapy for patients with resectable stage III colorectal cancer (CRC). A significant positive correlation was observed between AEG-1, TS, ERCC1, EGFR, and VEGF gene expression levels in CRC cell lines, and low AEG-1 and TS expression were highly sensitive to 5-fluorouracil treatment. Our results showed that AEG-1 expression was high in T4 and caused CRC recurrence or metastasis. Patients with T4, high AEG-1, TS and VEGF expression had a significantly short disease-free survival and overall survival. In multivariate Cox regression analysis, high AEG-1 expression could be an independent prognostic factor indicating poor survival in patients with resectable stage III CRC treated with adjuvant chemotherapy. In conclusion, AEG-1 expression and tumor grade are potential prognostic factors for recurrence and survival in patients with stage III CRC receiving adjuvant fluoropyrimidine-based chemotherapy.
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Affiliation(s)
- Long-Wei Lin
- Department of Pathology, National Taiwan University Hospital Yunlin Branch, Yunlin, Taiwan
| | - Peng-Sheng Lai
- Department of Surgery, National Taiwan University Hospital Yunlin Branch, Yunlin, Taiwan
| | - Ying-Yin Chen
- Department of Internal Medicine, National Taiwan University Hospital Yunlin Branch, Yunlin, Taiwan
| | - Chung-Yu Chen
- Department of Internal Medicine, National Taiwan University Hospital Yunlin Branch, Yunlin, Taiwan.,Department of Internal Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
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7
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Sriramulu S, Sun XF, Malayaperumal S, Ganesan H, Zhang H, Ramachandran M, Banerjee A, Pathak S. Emerging Role and Clinicopathological Significance of AEG-1 in Different Cancer Types: A Concise Review. Cells 2021; 10:1497. [PMID: 34203598 PMCID: PMC8232086 DOI: 10.3390/cells10061497] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 05/21/2021] [Accepted: 05/28/2021] [Indexed: 12/29/2022] Open
Abstract
Tumor breakthrough is driven by genetic or epigenetic variations which assist in initiation, migration, invasion and metastasis of tumors. Astrocyte elevated gene-1 (AEG-1) protein has risen recently as the crucial factor in malignancies and plays a potential role in diverse complex oncogenic signaling cascades. AEG-1 has multiple roles in tumor growth and development and is found to be involved in various signaling pathways of: (i) Ha-ras and PI3K/AKT; (ii) the NF-κB; (iii) the ERK or mitogen-activated protein kinase and Wnt or β-catenin and (iv) the Aurora-A kinase. Recent studies have confirmed that in all the hallmarks of cancers, AEG-1 plays a key functionality including progression, transformation, sustained angiogenesis, evading apoptosis, and invasion and metastasis. Clinical studies have supported that AEG-1 is actively intricated in tumor growth and progression which includes esophageal squamous cell, gastric, colorectal, hepatocellular, gallbladder, breast, prostate and non-small cell lung cancers, as well as renal cell carcinomas, melanoma, glioma, neuroblastoma and osteosarcoma. Existing studies have reported that AEG-1 expression has been induced by Ha-ras through intrication of PI3K/AKT signaling. Conversely, AEG-1 also activates PI3K/AKT pathway and modulates the defined subset of downstream target proteins via crosstalk between the PI3K/AKT/mTOR and Hedgehog signaling cascade which further plays a crucial role in metastasis. Thus, AEG-1 may be employed as a biomarker to discern the patients of those who are likely to get aid from AEG-1-targeted medication. AEG-1 may play as an effective target to repress tumor development, occlude metastasis, and magnify the effectiveness of treatments. In this review, we focus on the molecular mechanism of AEG-1 in the process of carcinogenesis and its involvement in regulation of crosstalk between the PI3K/AKT/mTOR and Hedgehog signaling. We also highlight the multifaceted functions, expression, clinicopathological significance and molecular inhibitors of AEG-1 in various cancer types.
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Affiliation(s)
- Sushmitha Sriramulu
- Department of Medical Biotechnology, Faculty of Allied Health Sciences, Chettinad Academy of Research and Education (CARE), Chettinad Hospital and Research Institute (CHRI), Kelambakkam, Chennai 603103, India; (S.S.); (S.M.); (H.G.); (M.R.); (A.B.)
| | - Xiao-Feng Sun
- Department of Oncology, Linköping University, SE-581 83 Linköping, Sweden
- Department of Biomedical and Clinical Sciences, Linköping University, SE-581 83 Linköping, Sweden
| | - Sarubala Malayaperumal
- Department of Medical Biotechnology, Faculty of Allied Health Sciences, Chettinad Academy of Research and Education (CARE), Chettinad Hospital and Research Institute (CHRI), Kelambakkam, Chennai 603103, India; (S.S.); (S.M.); (H.G.); (M.R.); (A.B.)
| | - Harsha Ganesan
- Department of Medical Biotechnology, Faculty of Allied Health Sciences, Chettinad Academy of Research and Education (CARE), Chettinad Hospital and Research Institute (CHRI), Kelambakkam, Chennai 603103, India; (S.S.); (S.M.); (H.G.); (M.R.); (A.B.)
| | - Hong Zhang
- Department of Medical Sciences, School of Medicine, Orebro University, SE-701 82 Orebro, Sweden;
| | - Murugesan Ramachandran
- Department of Medical Biotechnology, Faculty of Allied Health Sciences, Chettinad Academy of Research and Education (CARE), Chettinad Hospital and Research Institute (CHRI), Kelambakkam, Chennai 603103, India; (S.S.); (S.M.); (H.G.); (M.R.); (A.B.)
| | - Antara Banerjee
- Department of Medical Biotechnology, Faculty of Allied Health Sciences, Chettinad Academy of Research and Education (CARE), Chettinad Hospital and Research Institute (CHRI), Kelambakkam, Chennai 603103, India; (S.S.); (S.M.); (H.G.); (M.R.); (A.B.)
| | - Surajit Pathak
- Department of Medical Biotechnology, Faculty of Allied Health Sciences, Chettinad Academy of Research and Education (CARE), Chettinad Hospital and Research Institute (CHRI), Kelambakkam, Chennai 603103, India; (S.S.); (S.M.); (H.G.); (M.R.); (A.B.)
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8
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Chang XS, Zhu J, Yang T, Gao Y. MiR-524 suppressed the progression of oral squamous cell carcinoma by suppressing Metadherin and NF-κB signaling pathway in OSCC cell lines. Arch Oral Biol 2021; 125:105090. [PMID: 33676362 DOI: 10.1016/j.archoralbio.2021.105090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 02/07/2021] [Accepted: 02/18/2021] [Indexed: 11/25/2022]
Abstract
OBJECTIVES The aim of the present study was to explore the functional role of miR-524 in oral squamous cell carcinoma (OSCC) and determine its underlying mechanism. MATERIALS AND METHODS Tumor tissues and adjacent tissues were obtained from 55 patients with OSCC (20 females and 35 males) with a mean age of 54 years (range from 24 to 72 years). Additionally, OSCC cell lines culture was used and Reverse transcription‑quantitative PCR (RT-qPCR) was applied to measure the expression of miR-524 in OSCC tissues and cells. The protein density of Metadherin (MTDH) in OSCC tissues was detected by Immunohistochemistry (IHC) assay. MiR-524 mimic was employed to investigate the impact of miR-524 on proliferation, migration, and invasion using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) assay and transwell assays. The dual luciferase reporter assay was utilized to investigate the interaction between MTDH and miR-524 expression. Cells transfected with miR-524 mimic and pcDNA-MTDH were subjected to western blot to investigate the role of NF-κB signaling in miR-524/MTDH axis mediated cell proliferation, migration, and invasion. RESULTS MiR-524 expression was decreased significantly in OSCC tissues compared to adjacent tissues, and closely related to clinical stage, tumor size, and lymph node metastasis. Over-expression of miR-524 suppressed the proliferation, migration, and invasion of OSCC cells. Luciferase reporter assay results demonstrated that MTDH was the target gene of miR-524. Over-expression of miR-524 reduced MTDH expression and inhibited NF-κB signaling pathway. Rescue experiments revealed that over-expression of MTDH partially reversed the efficacy of miR-524 mimic on OSCC cells. CONCLUSIONS These results indicated that miR-524 inhibits the activation of NF-κB signaling pathway via inhibiting MTDH, resulting in the suppression of cell proliferation, migration, and invasion.
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Affiliation(s)
- Xiang-Shuang Chang
- Department of Stomatology, The 964st Hospital, Changchun City, Jilin Province, China
| | - Jing Zhu
- Department of Nursing, The 964st Hospital, Changchun City, Jilin Province, China
| | - Tao Yang
- Department of Health Team, The 93313 Army, Changchun City, Jilin Province, China
| | - Ying Gao
- Department of Stomatology, The 964st Hospital, Changchun City, Jilin Province, China.
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9
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Khan M, Sarkar D. The Scope of Astrocyte Elevated Gene-1/Metadherin (AEG-1/MTDH) in Cancer Clinicopathology: A Review. Genes (Basel) 2021; 12:genes12020308. [PMID: 33671513 PMCID: PMC7927008 DOI: 10.3390/genes12020308] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 01/19/2021] [Accepted: 01/24/2021] [Indexed: 12/24/2022] Open
Abstract
Since its initial cloning in 2002, a plethora of studies in a vast number of cancer indications, has strongly established AEG-1 as a bona fide oncogene. In all types of cancer cells, overexpression and knockdown studies have demonstrated that AEG-1 performs a seminal role in regulating proliferation, invasion, angiogenesis, metastasis and chemoresistance, the defining cancer hallmarks, by a variety of mechanisms, including protein-protein interactions activating diverse oncogenic pathways, RNA-binding promoting translation and regulation of inflammation, lipid metabolism and tumor microenvironment. These findings have been strongly buttressed by demonstration of increased tumorigenesis in tissue-specific AEG-1 transgenic mouse models, and profound resistance of multiple types of cancer development and progression in total and conditional AEG-1 knockout mouse models. Additionally, clinicopathologic correlations of AEG-1 expression in a diverse array of cancers establishing AEG-1 as an independent biomarker for highly aggressive, chemoresistance metastatic disease with poor prognosis have provided a solid foundation to the mechanistic and mouse model studies. In this review a comprehensive analysis of the current and up-to-date literature is provided to delineate the clinical significance of AEG-1 in cancer highlighting the commonality of the findings and the discrepancies and discussing the implications of these observations.
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Affiliation(s)
- Maheen Khan
- Department of Human and Molecular Genetics, Virginia Commonwealth University, Richmond, VA 23298, USA;
| | - Devanand Sarkar
- Department of Human and Molecular Genetics, Massey Cancer Center, VCU Institute of Molecular Medicine (VIMM), Virginia Commonwealth University, Richmond, VA 23298, USA
- Correspondence: ; Tel.: +1-804-827-2339
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10
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Shen M, Xie S, Rowicki M, Michel S, Wei Y, Hang X, Wan L, Lu X, Yuan M, Jin JF, Jaschinski F, Zhou T, Klar R, Kang Y. Therapeutic Targeting of Metadherin Suppresses Colorectal and Lung Cancer Progression and Metastasis. Cancer Res 2021; 81:1014-1025. [PMID: 33239430 PMCID: PMC8026491 DOI: 10.1158/0008-5472.can-20-1876] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 10/14/2020] [Accepted: 11/19/2020] [Indexed: 11/16/2022]
Abstract
Colorectal and lung cancers account for one-third of all cancer-related deaths worldwide. Previous studies suggested that metadherin (MTDH) is involved in the development of colorectal and lung cancers. However, how MTDH regulates the pathogenesis of these cancers remains largely unknown. Using genetically modified mouse models of spontaneous colorectal and lung cancers, we found that MTDH promotes cancer progression by facilitating Wnt activation and by inducing cytotoxic T-cell exhaustion, respectively. Moreover, we developed locked nucleic acid-modified (LNA) MTDH antisense oligonucleotides (ASO) that effectively and specifically suppress MTDH expression in vitro and in vivo. Treatments with MTDH ASOs in mouse models significantly attenuated progression and metastasis of colorectal, lung, and breast cancers. Our study opens a new avenue for developing therapies against colorectal and lung cancers by targeting MTDH using LNA-modified ASO. SIGNIFICANCE: This study provides new insights into the mechanism of MTDH in promoting colorectal and lung cancers, as well as genetic and pharmacologic evidence supporting the development of MTDH-targeting therapeutics.
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Affiliation(s)
- Minhong Shen
- Department of Molecular Biology, Princeton University, Princeton, New Jersey
| | - Shanshan Xie
- Department of Molecular Biology, Princeton University, Princeton, New Jersey
- Department of Cell Biology, Zhejiang University School of Medicine, Hangzhou, China
- The Children's Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Cancer Center, Zhejiang University, Zhejiang, China
| | - Michelle Rowicki
- Department of Molecular Biology, Princeton University, Princeton, New Jersey
| | - Sven Michel
- Secarna Pharmaceuticals GmbH & Co. KG, Planegg/Martinsried, Germany
| | - Yong Wei
- Department of Molecular Biology, Princeton University, Princeton, New Jersey
| | - Xiang Hang
- Department of Molecular Biology, Princeton University, Princeton, New Jersey
| | - Liling Wan
- Department of Molecular Biology, Princeton University, Princeton, New Jersey
| | - Xin Lu
- Department of Molecular Biology, Princeton University, Princeton, New Jersey
| | - Min Yuan
- Department of Molecular Biology, Princeton University, Princeton, New Jersey
| | - John F Jin
- Firebrand Therapeutics, Princeton, New Jersey
| | - Frank Jaschinski
- Secarna Pharmaceuticals GmbH & Co. KG, Planegg/Martinsried, Germany
| | - Tianhua Zhou
- Cancer Center, Zhejiang University, Zhejiang, China
- Department of Cell Biology and Cancer Institute of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada
| | - Richard Klar
- Secarna Pharmaceuticals GmbH & Co. KG, Planegg/Martinsried, Germany
| | - Yibin Kang
- Department of Molecular Biology, Princeton University, Princeton, New Jersey.
- Cancer Metabolism and Growth Program, Rutgers Cancer Institute of New Jersey, New Brunswick, New Jersey
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11
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Malayaperumal S, Sriramulu S, Jothimani G, Banerjee A, Pathak S. A Review of AEG-1 Oncogene Regulating MicroRNA Expression in Colon Cancer Progression. Endocr Metab Immune Disord Drug Targets 2021; 21:27-34. [PMID: 32552658 DOI: 10.2174/1871530320666200618104116] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 12/19/2019] [Accepted: 03/24/2020] [Indexed: 11/22/2022]
Abstract
MicroRNAs are a class of small non-coding RNAs that perform a crucial function in posttranscriptional gene regulation. Dysregulation of these microRNAs is associated with many types of cancer progression. In tumorigenesis, downregulated microRNAs might function as a tumour suppressor by repressing oncogenes, whereas overexpressed miRs might function as oncogenes by suppressing tumour suppressor. Similarly, Metadherin (also known as AEG-1/ LYRIC), is an oncogene, the levels of which are found to be very high in various cancers and play a crucial role in the proliferation of cells and invasion. Our review focuses on the study, which shows the alteration of microRNA expression profile and suppression of carcinogenesis when MTDH/AEG-1 is targeted. It summarises the studies where downregulation and upregulation of AEG-1 and microRNAs, respectively, alter the biological functions of the cell, such as proliferation and apoptosis. Studies have reported that AEG-1 can be direct or indirect target of microRNA, which could provide a new-insight to know the underlying molecular mechanism and might contribute to the progress of new therapeutic strategies for the disease.
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Affiliation(s)
- Sarubala Malayaperumal
- Department of Medical Biotechnology, Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute (CHRI), Chettinad Academy of Research and Education (CARE), Kelambakkam, Chennai 603103, Tamil Nadu, India
| | - Sushmitha Sriramulu
- Department of Medical Biotechnology, Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute (CHRI), Chettinad Academy of Research and Education (CARE), Kelambakkam, Chennai 603103, Tamil Nadu, India
| | - Ganesan Jothimani
- Department of Medical Biotechnology, Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute (CHRI), Chettinad Academy of Research and Education (CARE), Kelambakkam, Chennai 603103, Tamil Nadu, India
| | - Antara Banerjee
- Department of Medical Biotechnology, Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute (CHRI), Chettinad Academy of Research and Education (CARE), Kelambakkam, Chennai 603103, Tamil Nadu, India
| | - Surajit Pathak
- Department of Medical Biotechnology, Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute (CHRI), Chettinad Academy of Research and Education (CARE), Kelambakkam, Chennai 603103, Tamil Nadu, India
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12
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Zare F, Sharifzadeh S, Behzad-Behbahani A, Rafiei Dehbidi G, Yousefi Z, Ranjbaran R, Seyyedi N. Construction and Evaluation of Short Hairpin RNAs for Knockdown of Metadherin mRNA. Avicenna J Med Biotechnol 2021; 13:217-222. [PMID: 34900148 PMCID: PMC8606111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Accepted: 04/04/2021] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Short hairpin RNA (shRNA) has proven to be a powerful tool to study genes' function through RNA interference mechanism. Three different methods have been used in previous studies to produce shRNA expression vectors including oligonucleotide-based cloning, polymerase chain reaction (PCR)-based cloning, and primer extension PCR approaches. The aim of this study was designing a reliable and simple method according to the primer extension strategy for constructing four shRNA vectors in order to target different regions of Metadherin (MTDH) mRNA in human leukemic cell line Jurkat. METHODS Oligonucleotides for construction of four shRNA vectors were designed, synthesized and fused to U6 promoter. Each U6-shRNA cassette was cloned into a pGFP-V-RS vector. MTDH shRNAs were transfected into the Jurkat cell line by using the electroporation method. The ability of shRNAs to knock down MTDH mRNA was analyzed through qRT-PCR. Apoptosis assay was used to evaluate the effect of down regulation of MTDH expression on cell integrity. RESULTS A significant reduction (about 80%) in the expression levels of MTDH mRNA and an increase in the percentages of apoptotic cells (about 20%) were observed in the test group in comparison with control. CONCLUSION MTDH shRNA constructs effectively inhibited gene expression. However, simplicity and inexpensiveness of the method were additional advantages for its application.
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Affiliation(s)
- Farahnaz Zare
- Division of Medical Biotechnology, Department of Medical Laboratory Sciences, School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran,Diagnostic Laboratory Sciences and Technology Research Center, Faculty of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Sedigheh Sharifzadeh
- Division of Medical Biotechnology, Department of Medical Laboratory Sciences, School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran,Diagnostic Laboratory Sciences and Technology Research Center, Faculty of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran,Corresponding author: Sedigheh Sharifzadeh, Ph.D., Division of Medical Biotechnology, Department of Medical Laboratory Sciences, School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran, and Diagnostic Laboratory Sciences and Technology Research Center, Faculty of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran, Tel: +98 71 32270301, Fax: +98 71 32270301, E-mail:
| | - Abbas Behzad-Behbahani
- Division of Medical Biotechnology, Department of Medical Laboratory Sciences, School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran,Diagnostic Laboratory Sciences and Technology Research Center, Faculty of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Gholamreza Rafiei Dehbidi
- Diagnostic Laboratory Sciences and Technology Research Center, Faculty of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Zahra Yousefi
- School of Allied Medical Sciences, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Reza Ranjbaran
- Diagnostic Laboratory Sciences and Technology Research Center, Faculty of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Noorossadat Seyyedi
- Division of Medical Biotechnology, Department of Medical Laboratory Sciences, School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran,Diagnostic Laboratory Sciences and Technology Research Center, Faculty of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
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13
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Meng WJ, Pathak S, Zhang X, Adell G, Jarlsfelt I, Holmlund B, Wang ZQ, Zhang AS, Zhang H, Zhou ZG, Sun XF. Expressions of miR-302a, miR-105, and miR-888 Play Critical Roles in Pathogenesis, Radiotherapy, and Prognosis on Rectal Cancer Patients: A Study From Rectal Cancer Patients in a Swedish Rectal Cancer Trial of Preoperative Radiotherapy to Big Database Analyses. Front Oncol 2020; 10:567042. [PMID: 33123477 PMCID: PMC7573294 DOI: 10.3389/fonc.2020.567042] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Accepted: 08/25/2020] [Indexed: 02/05/2023] Open
Abstract
Differential expressions and functions of various micoRNAs (miRNAs) have been intensively studied in both colon and rectal cancers. However, the importance of miRNAs on radiotherapy (RT) response and clinical outcome in rectal cancer patients remains unclear. In this study, we used real-time polymerase chain reaction to examine the expressions of miR-302a, miR-105, and miR-888 in normal mucosa and cancer tissue from rectal cancer patients with and without preoperative RT. The biological function of miR-302a, miR-105, and miR-888 expression was further analyzed and identified through the public databases: TCGA (The Cancer Genome Atlas) and GEPIA (Gene Expression Profiling Interactive Analysis). The results showed that the expression of miR-105 in rectal cancer was higher than that in normal mucosa in RT (P = 0.042) and non-RT patients (P = 0.003) and was associated with mucinous histological type (P = 0.004), COX-2 (P = 0.042), and p73 expression (P = 0.030). The expression of miR-302a was shown more frequently in cancers with necrosis (P = 0.033) and with WRAP53 expression (P = 0.015), whereas miR-888 expression occurred more frequently in tumors with protein the expression of survivin (P = 0.015), AEG-1 (astrocyte elevated gene-1) (P = 0.003), and SATB1 (special AT-rich sequence binding protein 1) (P = 0.036). Moreover, TargetScan also predicted AEG-1 and SATB1 as putative targets for miR-888. The miRNA-gene network analysis showed that ABI2 was associated with all the three miRNAs, with lower expression and good diagnostic value in rectal cancers. The TCGA database demonstrated the association of miR-105 expression with high carcinoembryonic antigen level (P = 0.048). RT reduced the expressions of miR-302a, miR-105, and miR-888. Prognostic analysis showed that miR-888 expression was independently associated with worse survival of patients without RT [overall survival, P = 0.001; disease-free survival, P = 0.009]. Analysis of biological function revealed that the protein serine/threonine kinase activity and PI3K-AKT signaling pathway were the most significantly enriched functions and pathways, respectively. Our findings suggest that miR-105 is involved in rectal cancer pathogenesis and miR-888 is associated with prognosis. MiR-302a, miR-105, and miR-888 have potential influence on the pathogenesis, RT, and prognosis of rectal cancer.
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Affiliation(s)
- Wen-Jian Meng
- Department of Oncology and Department of Biomedical and Clinical Sciences, University of Linköping, Linköping, Sweden.,Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Surajit Pathak
- Department of Oncology and Department of Biomedical and Clinical Sciences, University of Linköping, Linköping, Sweden.,Chettinad Hospital & Research Institute, Chettinad Academy of Research and Education, Kelambakkam, India
| | - Xueli Zhang
- School of Medicine, Institute of Medical Sciences, Örebro University, Örebro, Sweden
| | - Gunnar Adell
- County Council of Östergötland, University of Linköping, Linköping, Sweden
| | | | - Birgitta Holmlund
- Department of Oncology and Department of Biomedical and Clinical Sciences, University of Linköping, Linköping, Sweden
| | - Zi-Qiang Wang
- Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Alexander S Zhang
- Department of Oncology-Pathology, Karolinska Institute, Stockholm, Sweden
| | - Hong Zhang
- School of Medicine, Institute of Medical Sciences, Örebro University, Örebro, Sweden
| | - Zong-Guang Zhou
- Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, Chengdu, China.,State Key Laboratory of Biotherapy and Cancer Center, Institute of Digestive Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Xiao-Feng Sun
- Department of Oncology and Department of Biomedical and Clinical Sciences, University of Linköping, Linköping, Sweden
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14
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Abdel Ghafar MT, Gharib F, Abdel-Salam S, Elkhouly RA, Elshora A, Shalaby KH, El-Guindy D, El-Rashidy MA, Soliman NA, Abu-Elenin MM, Allam AA. Role of serum Metadherin mRNA expression in the diagnosis and prediction of survival in patients with colorectal cancer. Mol Biol Rep 2020; 47:2509-2519. [PMID: 32088817 DOI: 10.1007/s11033-020-05334-5] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2019] [Accepted: 02/18/2020] [Indexed: 01/05/2023]
Abstract
Early diagnosis and treatment of colorectal cancer (CRC) are important for improving patients' survival. Metadherin is an oncogene that plays a pivotal role in carcinogenesis and can be suggested as a cancer biomarker. This study aimed to elucidate the efficacy of serum Metadherin mRNA expression as a potential non-invasive biomarker for early diagnosis of CRC in relation to other screening markers as carcinoembryonic antigen (CEA), carbohydrate antigen 19.9 (CA19.9) and Fecal occult blood (FOB) and also to assess its relationship with the tumor stage and survival rate. A convenience series of 86 CRC cases (group I) were recruited with 78 subjects as controls (group II). Serum Metadherin mRNA expression level was determined using reverse transcription polymerase chain reaction (RT-PCR). Serum Metadherin mRNA expression level was significantly elevated in CRC cases when compared with controls (P < 0.001). For CRC diagnosis; Receiver operator characteristic (ROC) analyses revealed that the diagnostic accuracy of serum Metadherin mRNA (AUC = 0.976) was significantly higher than other routine CRC screening markers as CEA, CA19.9 and FOB. The combined accuracy of these markers (AUC = 0.741) was increased when used with serum Metadherin mRNA (AUC = 0.820). High serum Metadherin mRNA expression was associated with poorly differentiated histological grade, advanced tumor stage and lower survival rate. AUC of Metadherin was 0.820 for differentiating advanced versus early tumor stages. Serum Metadherin mRNA expression is a useful non-invasive biomarker for CRC. It can be used for screening and early diagnosis of CRC and can increase the efficacy of other routine CRC screening markers when it is estimated in CRC patients with them. It is also associated with advanced tumor stage and a lower survival rate.
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Affiliation(s)
- Muhammad Tarek Abdel Ghafar
- Department of Clinical Pathology, Faculty of Medicine, Tanta University, Aljaysh st, Medical Campus, Tanta, 31511, Egypt.
| | - Fatma Gharib
- Department of Oncology, Faculty of Medicine, Tanta University, Tanta, Egypt
| | - Sherief Abdel-Salam
- Department of Tropical Medicine, Faculty of Medicine, Tanta University, Tanta, Egypt
| | | | - Ahmed Elshora
- Department of General Surgery, Faculty of Medicine, Tanta University, Tanta, Egypt
| | - Khaled H Shalaby
- Department of Internal Medicine, Faculty of Medicine, Tanta University, Tanta, Egypt
| | - Dina El-Guindy
- Department of Pathology, Faculty of Medicine, Tanta University, Tanta, Egypt
| | | | - Nema A Soliman
- Department of Medical Biochemistry, Faculty of Medicine, Tanta University, Tanta, Egypt
| | - Mira Maged Abu-Elenin
- Department of Public Health and Community Medicine, Faculty of Medicine, Tanta University, Tanta, Egypt
| | - Alzahraa A Allam
- Department of Internal Medicine, Faculty of Medicine, Tanta University, Tanta, Egypt
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15
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Li S, Wu T, Zhang D, Sun X, Zhang X. The long non-coding RNA HCG18 promotes the growth and invasion of colorectal cancer cells through sponging miR-1271 and upregulating MTDH/Wnt/β-catenin. Clin Exp Pharmacol Physiol 2020; 47:703-712. [PMID: 31854468 DOI: 10.1111/1440-1681.13230] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 12/06/2019] [Accepted: 12/13/2019] [Indexed: 01/03/2023]
Abstract
Long non-coding RNAs (lncRNAs) have recently emerged as key regulators of the occurrence and progression of various human cancers, including colorectal cancer. However, the regulatory mechanism of lncRNAs in the tumorigenesis of colorectal cancer remains poorly understood. In this study, we aimed to elucidate the potential role of lncRNA HCG18 in colorectal cancer. Herein, we found that HCG18 expression was significantly upregulated in colorectal cancer tissues and cell lines. Knockdown of HCG18 significantly inhibited the growth and invasion of colorectal cancer cells, while its overexpression had the opposite effect. Moreover, HCG18 was identified as a sponge of miR-1271. Our results showed that knockdown of HCG18 markedly upregulated miR-1271 expression in colorectal cancer cells. Notably, HCG18 expression was inversely correlated with miR-1271 expression in colorectal cancer specimens. Further investigation revealed that HCG18 contributed to the enhancement of MTDH/Wnt/β-catenin signalling in colorectal cancer cells. The antitumour effect of HCG18 inhibition was significantly reversed by miR-1271 inhibition or MTDH overexpression. Overall, the results of our study demonstrate that HCG18 exerts a potential oncogenic function in colorectal cancer by enhancing MTDH/Wnt/β-catenin signalling via sponging of miR-1271, highlighting the importance of HCG18/miR-1271/ MTDH/Wnt/β-catenin signalling in the progression of colorectal cancer.
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Affiliation(s)
- Shunle Li
- Department of General Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Tao Wu
- Department of General Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Di Zhang
- Department of General Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Xiaoli Sun
- Department of General Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Xinwu Zhang
- Department of General Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
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16
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Han SH, Mo JS, Park WC, Chae SC. Reduced microRNA 375 in colorectal cancer upregulates metadherin-mediated signaling. World J Gastroenterol 2019; 25:6495-6507. [PMID: 31802830 PMCID: PMC6886017 DOI: 10.3748/wjg.v25.i44.6495] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 11/20/2019] [Accepted: 11/22/2019] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND The human microRNA 375 (MIR375) is significantly downregulated in human colorectal cancer (CRC) and we have previously shown that MIR375 is a CRC-associated miRNA. The metadherin (MTDH) is a candidate target gene of MIR375.
AIM To investigate the interaction and function between MIR375 and MTDH in human CRC.
METHODS A luciferase reporter system was used to confirm the effect of MIR375 on MTDH expression. The expression levels of MIR375 and the target genes were evaluated by quantitative RT-PCR (qRT-PCR), western blotting, or immunohistochemistry.
RESULTS MTDH expression was found to be upregulated in human CRC tissues compared to that in healthy controls. We show that MIR375 regulates the expression of many genes involved in the MTDH-mediated signal transduction pathways [BRAF-MAPK and phosphatidylinositol-4,5-biphosphate-3-kinase catalytic subunit alpha (PIK3CA)-AKT] in CRC cells. Upregulated MTDH expression levels were found to inhibit NF-κB inhibitor alpha, which further upregulated NFKB1 and RELA expression in CRC cells.
CONCLUSION Our findings suggest that suppressing MIR375 expression in CRC regulates cell proliferation and angiogenesis by increasing MTDH expression. Thus, MIR375 may be of therapeutic value in treating human CRC.
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Affiliation(s)
- Seol-Hee Han
- Department of Pathology, School of Medicine, Wonkwang University, Iksan, Chonbuk 54538, South Korea
| | - Ji-Su Mo
- Department of Pathology, School of Medicine, Wonkwang University, Iksan, Chonbuk 54538, South Korea
- Digestive Disease Research Institute, Wonkwang University, Iksan, Chonbuk 54538, South Korea
| | - Won-Cheol Park
- Digestive Disease Research Institute, Wonkwang University, Iksan, Chonbuk 54538, South Korea
| | - Soo-Cheon Chae
- Department of Pathology, School of Medicine, Wonkwang University, Iksan, Chonbuk 54538, South Korea
- Digestive Disease Research Institute, Wonkwang University, Iksan, Chonbuk 54538, South Korea
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17
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Lv S, Zhang J, He Y, Liu Q, Wang Z, Liu B, Shi L, Wu Y. MicroRNA‐520e targets AEG‐1 to suppress the proliferation and invasion of colorectal cancer cells through Wnt/GSK‐3β/β‐catenin signalling. Clin Exp Pharmacol Physiol 2019; 47:158-167. [PMID: 31574178 DOI: 10.1111/1440-1681.13185] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Revised: 09/24/2019] [Accepted: 09/27/2019] [Indexed: 12/18/2022]
Affiliation(s)
- Samei Lv
- Digestive Department of the Elderly Shaanxi Provincial People’s Hospital Xi’an China
| | - Jian Zhang
- Digestive Department of the Elderly Shaanxi Provincial People’s Hospital Xi’an China
| | - Yu He
- Digestive Department of the Elderly Shaanxi Provincial People’s Hospital Xi’an China
| | - Qian Liu
- Digestive Department of the Elderly Shaanxi Provincial People’s Hospital Xi’an China
| | - Zongyan Wang
- Digestive Department of the Elderly Shaanxi Provincial People’s Hospital Xi’an China
| | - Bin Liu
- Department of General Surgery Shaanxi Provincial People’s Hospital Xi’an China
| | - Liping Shi
- Digestive Department of the Elderly Shaanxi Provincial People’s Hospital Xi’an China
| | - Youwei Wu
- Digestive Department of the Elderly Shaanxi Provincial People’s Hospital Xi’an China
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18
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Dhiman G, Srivastava N, Goyal M, Rakha E, Lothion-Roy J, Mongan NP, Miftakhova RR, Khaiboullina SF, Rizvanov AA, Baranwal M. Metadherin: A Therapeutic Target in Multiple Cancers. Front Oncol 2019; 9:349. [PMID: 31131259 PMCID: PMC6509227 DOI: 10.3389/fonc.2019.00349] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Accepted: 04/15/2019] [Indexed: 12/24/2022] Open
Abstract
Altered expression of many genes and proteins is essential for cancer development and progression. Recently, the affected expression of metadherin (MTDH), also known as AEG-1 (Astrocyte Elevated Gene 1) and Lyric, has been implicated in various aspects of cancer progression and metastasis. Elevated expression of MTDH/AEG-1 has been reported in many cancers including breast, prostate, liver, and esophageal cancers, whereas its expression is low or absent in non-malignant tissues. These expression studies suggest that MTDH may represent a potential tumor associated antigen. MTDH also regulates multiple signaling pathways including PI3K/Akt, NF-κB, Wnt/β-catenin, and MAPK which cooperate to promote the tumorigenic and metastatic potential of transformed cells. Several microRNA have also been found to be associated with the increased MTDH expression in different cancers. Increased MTDH levels were linked to the tumor chemoresistance making it an attractive novel therapeutic target. In this review, we summarize data on MTDH function in various cancers.
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Affiliation(s)
- Gourav Dhiman
- Department of Biotechnology, Thapar Institute of Engineering and Technology, Patiala, India
| | - Neha Srivastava
- Department of Biotechnology, Thapar Institute of Engineering and Technology, Patiala, India
| | - Mehendi Goyal
- Department of Biotechnology, Thapar Institute of Engineering and Technology, Patiala, India
| | - Emad Rakha
- Faculty of Medicine and Health Sciences, School of Medicine, University of Nottingham, Nottingham, United Kingdom
| | - Jennifer Lothion-Roy
- Faculty of Medicine and Health Sciences, School of Veterinary Medicine and Science, University of Nottingham, Nottingham, United Kingdom
| | - Nigel P Mongan
- Faculty of Medicine and Health Sciences, School of Veterinary Medicine and Science, University of Nottingham, Nottingham, United Kingdom
| | - Regina R Miftakhova
- Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russia
| | - Svetlana F Khaiboullina
- Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russia.,Department of Microbiology and Immunology, University of Nevada, Reno, NV, United States
| | - Albert A Rizvanov
- Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russia
| | - Manoj Baranwal
- Department of Biotechnology, Thapar Institute of Engineering and Technology, Patiala, India
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19
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El-Ashmawy NE, El-Zamarany EA, Khedr EG, Abo-Saif MA. Effect of modification of MTDH gene expression on colorectal cancer aggressiveness. Gene 2019; 698:92-99. [DOI: 10.1016/j.gene.2019.02.069] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Revised: 01/30/2019] [Accepted: 02/14/2019] [Indexed: 01/16/2023]
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20
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Zhang L, Li C, Cao L, Li H, Zou H, Li H, Pei H. microRNA-877 inhibits malignant progression of colorectal cancer by directly targeting MTDH and regulating the PTEN/Akt pathway. Cancer Manag Res 2019; 11:2769-2781. [PMID: 31114332 PMCID: PMC6497869 DOI: 10.2147/cmar.s194073] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Accepted: 02/15/2019] [Indexed: 12/13/2022] Open
Abstract
Background: Recently, microRNA-877-5p (miR-877) was recognized as a cancer-associated miRNA in hepatocellular and renal cell carcinomas. However, little is known regarding its expression pattern and role in colorectal cancer (CRC) tumorigenesis. Material and methods: In the present study, reverse-transcription quantitative polymerase chain reaction was performed to detect miR-877 expression in CRC tissues and cell lines. A series of functional experiments were used to determine the effects of miR-877 upregulation on CRC cell proliferation, colony formation, apoptosis, migration, and invasion. In addition, the regulatory role of miR-877 in tumor growth was examined in vivo using a xenograft experiment. More importantly, the mechanisms underlying the action of miR-877 in CRC were explored. Results: A significant decrease in the expression of miR-877 was observed in CRC tissues and cell lines. Low miR-877 expression correlated with lymph node metastasis and TNM stage of CRC patients. Functional experiments revealed that ectopic expression of miR-877 suppressed CRC cell proliferation and colony formation ability, induced cell apoptosis, inhibited cell migration and invasion in vitro, and reduced tumor growth in vivo. Metadherin (MTDH) was recognized as a direct target of miR-877 in CRC cells. It was notably overexpressed in CRC tissues, and its expression was inversely correlated with that of miR-877 expression. Furthermore, MTDH knockdown simulated the tumor suppressor activity of miR-877 in CRC cells. MTDH restoration impaired the suppressive effects of miR-877 on malignant phenotypes of CRC cells. In addition, miR-877 inhibited the activation of the PTEN/Akt signaling pathway by regulating MTDH expression both in vitro and in vivo. Conclusion: Collectively, these results demonstrate that miR-877 inhibits the progression of CRC, at least partly by the direct targeting of MTDH and regulation of the PTEN/Akt pathway. Thus, miR-877 may serve as a potential therapeutic target for the treatment of patients with CRC.
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Affiliation(s)
- Lunqiang Zhang
- Department of Gastrointestinal Surgery, Xiangya Hospital, Central South University, Hunan 410008, People's Republic of China
| | - Chenglong Li
- Department of Gastrointestinal Surgery, Xiangya Hospital, Central South University, Hunan 410008, People's Republic of China
| | - Lijun Cao
- Department of Anesthesiology, The Second Xiangya Hospital of Central South University, Hunan 410011, People's Republic of China
| | - Hui Li
- Department of Anesthesiology, The Second Xiangya Hospital of Central South University, Hunan 410011, People's Republic of China
| | - Haiding Zou
- Department of Anesthesiology, The Second Xiangya Hospital of Central South University, Hunan 410011, People's Republic of China
| | - Hongqin Li
- Department of Anesthesiology, The Second Xiangya Hospital of Central South University, Hunan 410011, People's Republic of China
| | - Haiping Pei
- Department of Gastrointestinal Surgery, Xiangya Hospital, Central South University, Hunan 410008, People's Republic of China
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21
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Activation of EMT in colorectal cancer by MTDH/NF-κB p65 pathway. Mol Cell Biochem 2019; 457:83-91. [DOI: 10.1007/s11010-019-03514-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Accepted: 02/23/2019] [Indexed: 12/19/2022]
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22
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Wang L, Lyu X, Ma Y, Wu F, Wang L. MicroRNA‑504 targets AEG‑1 and inhibits cell proliferation and invasion in retinoblastoma. Mol Med Rep 2019; 19:2935-2942. [PMID: 30720088 DOI: 10.3892/mmr.2019.9923] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Accepted: 12/14/2018] [Indexed: 11/06/2022] Open
Abstract
The dysregulation of microRNAs (miRNAs/miRs) has become increasingly recognized as a primary feature of retinoblastoma (RB). Furthermore, miRNAs have been demonstrated to be involved in the occurrence and development of RB. Therefore, it is crucial to investigate the expression profile and roles of miRNAs in RB in order to identify potential therapeutic targets to treat patients with RB. The expression profile and biological roles of miRNA‑504 (miR‑504) have been reported in numerous types of human cancer; however, the roles of miR‑504 in RB remain unknown. In the present study, it was demonstrated that miR‑504 expression was significantly decreased in RB tissues and cell lines. Functional analysis identified that resumption of miR‑504 expression suppressed cell proliferation and invasion in RB. Furthermore, astrocyte elevated gene‑1 (AEG‑1) was determined to be a direct target of miR‑504 in RB, and a negative correlation between miR‑504 and AEG‑1 mRNA expression levels was observed in RB tissues. Additionally, the tumor‑suppressing effects of miR‑504 overexpression in RB cells could be rescued by AEG‑1 upregulation. In conclusion, these results indicated a significant role of the miR‑504/AEG‑1 pathway in inhibiting the aggressiveness of RB, suggesting that this miRNA may be employed as a therapeutic target for the treatment of patients with this disease.
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Affiliation(s)
- Lina Wang
- Department of Ophthalmology, China‑Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
| | - Xueman Lyu
- Department of Ophthalmology, China‑Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
| | - Yunqing Ma
- Department of Intensive Care Unit, The Second Hospital of Jilin University, Changchun, Jilin 130041, P.R. China
| | - Fei Wu
- Department of Gynecology and Obstetrics, The Second Hospital of Jilin University, Changchun, Jilin 130041, P.R. China
| | - Ling Wang
- Department of Ophthalmology, China‑Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
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Interaction of CD200 Overexpression on Tumor Cells with CD200R1 Overexpression on Stromal Cells: An Escape from the Host Immune Response in Rectal Cancer Patients. JOURNAL OF ONCOLOGY 2019; 2019:5689464. [PMID: 30800162 PMCID: PMC6360612 DOI: 10.1155/2019/5689464] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2018] [Accepted: 11/29/2018] [Indexed: 11/17/2022]
Abstract
CD200 imparts an immunoregulatory signal through its receptor, CD200R1, leading to the suppression of tumor specific immunity. The mechanism of CD200:CD200R1 signaling pathway is still uncertain. Our aim was to investigate the expression and localization of CD200 and its receptor CD200R1 and their clinical significance in rectal cancer patients. We examined the immunohistochemical expressions and localizations of CD200 and CD200R1 in 140 rectal cancer patients. Among the patients, 79 underwent the preoperative radiotherapy and the others were untreated prior to the surgery. In addition, 121 matched normal rectal mucosa samples were evaluated. The results of immunohistochemical analysis showed a strikingly high level of CD200 in tumor cells (p=0.001) and CD200R1 expression in normal mucosal epithelium and stromal cells. Importantly, CD200R1 was overexpressed in stromal cells of the metastatic cancer patients compared to patients without metastases (p=0.002). More than that, 87% of metastatic patients had a phenotype of upregulated CD200 in tumor cells accompanied by overexpressed CD200R1 in stromal cells. In addition, low levels of CD200 were correlated with improved overall survival in untreated patients. We showed that tumor-stroma communication through CD200 and its receptor interaction is selected in patients with high risk of relapse. High levels of these molecules support instigation of the far and local metastatic nest that provides solid ground for metastasis. Our current data also disclose a mechanism by which CD200:CD200R1 affects tumor progression and may strengthen the feasibility of targeting CD200 or CD200R1 as anticancer strategy.
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Peng Y, Li H, Chen D. Silencing astrocyte elevated gene-1 attenuates lipopolysaccharide-induced inflammation and mucosal barrier injury in NCM460 cells by suppressing the activation of NLRP3 inflammasome. Cell Biol Int 2018; 43:56-64. [PMID: 30489008 DOI: 10.1002/cbin.11078] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Accepted: 11/24/2018] [Indexed: 12/11/2022]
Affiliation(s)
- Yang Peng
- Emergency Department; Jingmen No. 1 People's Hospital; No. 168 Xiangshan Road Jingmen Hubei Province 448000 China
| | - Hongyan Li
- Department of Thyroid and Breast Surgery; Jingmen No. 1 People's Hospital; No. 168 Xiangshan Road Jingmen Hubei Province 448000 China
| | - Dandan Chen
- Department of General Surgery; Jingmen No. 1 People's Hospital; No. 168 Xiangshan Road Jingmen Hubei Province 448000 China
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25
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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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26
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Mirza-Aghazadeh-Attari M, Darband SG, Kaviani M, Mihanfar A, Aghazadeh Attari J, Yousefi B, Majidinia M. DNA damage response and repair in colorectal cancer: Defects, regulation and therapeutic implications. DNA Repair (Amst) 2018; 69:34-52. [PMID: 30055507 DOI: 10.1016/j.dnarep.2018.07.005] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Revised: 07/15/2018] [Accepted: 07/15/2018] [Indexed: 12/11/2022]
Abstract
DNA damage response, a key factor involved in maintaining genome integrity and stability, consists of several kinase-dependent signaling pathways, which sense and transduce DNA damage signal. The severity of damage appears to determine DNA damage responses, which can include cell cycle arrest, damage repair and apoptosis. A number of recent studies have demonstrated that defection in signaling through this network is thought to be an underlying mechanism behind the development and progression of various types of human malignancies, including colorectal cancer. In this review, colorectal cancer and its molecular pathology as well as DNA damage response is briefly introduced. Finally, the involvement of key components of this network in the initiation/progression, prognosis, response to treatment and development of drug resistance is comprehensively discussed.
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Affiliation(s)
- Mohammad Mirza-Aghazadeh-Attari
- Aging Research Institute, Tabriz University of Medical Sciences, Tabriz, Iran; Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Saber Ghazizadeh Darband
- Danesh Pey Hadi Co., Health Technology Development Center, Urmia University of Medical Sciences, Urmia, Iran
| | - Mojtaba Kaviani
- School of Nutrition and Dietetics, Acadia University, Wolfville, Nova Scotia, Canada
| | - Ainaz Mihanfar
- Stem Cell and Regenerative Medicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Bahman Yousefi
- Molecular Medicine Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Maryam Majidinia
- Solid Tumor Research Center, Urmia University of Medical Sciences, Urmia, Iran.
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27
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Zhang Y, Wang X, Zhao Y. MicroRNA‑874 prohibits the proliferation and invasion of retinoblastoma cells by directly targeting metadherin. Mol Med Rep 2018; 18:3099-3105. [PMID: 30015932 DOI: 10.3892/mmr.2018.9295] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Accepted: 06/21/2018] [Indexed: 11/06/2022] Open
Abstract
MicroRNAs (miRNAs/miRs) serve important roles in regulating gene expression by directly binding to the 3'‑untranslated regions of target genes. Multiple miRNAs are dysregulated in retinoblastoma (RB) and their dysregulation is closely related to RB malignancy. Therefore, exploring the detailed roles of miRNAs in RB is valuable to facilitate the development of effective therapeutic targets for patients with this disease. miRNA‑874‑3p (miR‑874) has been recently reported to be downregulated in several types of human cancer and serves an essential role in cancer progression. However, the expression pattern and detailed roles of miR‑874 in RB, as well as the underlying molecular mechanisms in RB, have not been clearly elucidated. Therefore, this study detected miR‑874 expression in RB tissues and cell lines. The biological roles of miR‑874 in RB were determined and the underlying mechanisms of its actions in RB cells were also examined. This study revealed that miR‑874 expression was aberrantly underexpressed in RB tissues and cell lines. However, returning miR‑874 expression restricted the proliferative and invasive abilities of RB cells. In terms of the underlying mechanism, metadherin (MTDH) was validated as a direct target gene of miR‑874 in RB cells. MTDH inhibition could imitate the inhibitory roles of miR‑874 overexpression in RB cells. Furthermore, forced MTDH expression partially reversed the suppressive effects of miR‑874 on RB cells. In conclusion, this study revealed that miR‑874 may inhibit RB progression by directly targeting MTDH. Restoration of miR‑874 expression may be a novel strategy for preventing the rapid growth and metastasis of RB cells.
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Affiliation(s)
- Yongfeng Zhang
- Department of Pediatrics, Affiliated Hospital of Weifang Medical University, Weifang, Shandong 261031, P.R. China
| | - Xueqin Wang
- Medical Imaging Center, Affiliated Hospital of Weifang Medical University, Weifang, Shandong 261031, P.R. China
| | - Yuehua Zhao
- Department of Pediatrics, Affiliated Hospital of Weifang Medical University, Weifang, Shandong 261031, P.R. China
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28
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Li Q, Wang M, Wang N, Wang J, Qi L, Mao P. Downregulation of microRNA-216b contributes to glioma cell growth and migration by promoting AEG-1-mediated signaling. Biomed Pharmacother 2018; 104:420-426. [PMID: 29787989 DOI: 10.1016/j.biopha.2018.05.048] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Revised: 05/09/2018] [Accepted: 05/09/2018] [Indexed: 12/28/2022] Open
Abstract
Accumulating evidence indicates microRNA-216b (miR-216b) plays an important role in the development and progression of various cancers. However, little is known about the function of miR-216b in gliomas. In this study, we aimed to investigate the expression level and functional significance of miR-216b in gliomas. We found that miR-216b was significantly downregulated in glioma specimens and cell lines. Overexpression of miR-216b suppressed the growth and migration of glioma cells, while miR-216b inhibition showed the opposite effects. Astrocyte elevated gene-1 (AEG-1) was predicted as a potential target gene of miR-216b by bioinformatics analysis. A dual-luciferase reporter assay showed that miR-216b could directly target the 3'-untranslated region of AEG-1. RT-qPCR and western blot analysis showed that miR-216 negatively regulated AEG-1 expression in glioma cells. Correlation analysis revealed an inverse correlation between miR-216b and AEG-1 in clinical glioma specimens. miR-216b also regulated the activation of nuclear factor-κB and Wnt signaling in glioma cells. Moreover, restoration of AEG-1 expression partially reversed the inhibitory effect of miR-216b overexpression on glioma cell growth and migration. Overall, these results revealed a tumor suppressive role of miR-216b in glioma tumorigenesis, and identified AEG-1 as a target gene of miR-216b action. Our study suggests that miR-216b can be potentially targeted for the development of novel therapies for gliomas.
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Affiliation(s)
- Qi Li
- Department of Neurosurgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, China
| | - Maode Wang
- Department of Neurosurgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, China.
| | - Ning Wang
- Department of Neurosurgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, China
| | - Jia Wang
- Department of Neurosurgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, China
| | - Lei Qi
- Department of Neurosurgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, China
| | - Ping Mao
- Department of Neurosurgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, China
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29
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Zhang Y, Peng G, Wang Y, Cui L, Wu W, Wang L, Liu C, Han X. Silencing of astrocyte elevated gene-1 inhibits proliferation and migration of melanoma cells and induces apoptosis. Clin Exp Pharmacol Physiol 2018; 44:815-826. [PMID: 28429540 DOI: 10.1111/1440-1681.12767] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Revised: 03/24/2017] [Accepted: 04/06/2017] [Indexed: 12/19/2022]
Abstract
Melanoma is an aggressive skin malignancy with a high mortality. Astrocyte elevated gene-1 (AEG-1), a downstream target of Ras and c-Myc, has been implicated in the development of multiple tumours, but its role in melanoma remains unclear. In the present study, the role of AEG-1 in melanoma was explored through AEG-1 silencing. Our results showed that silencing AEG-1 inhibited the proliferation of melanoma cells, induced cell cycle arrest, and reduced levels of cyclin A, cyclin B, cyclin D1, cyclin E, and cyclin-dependent kinase 2. AEG-1silencing also induced apoptosis in melanoma cells and altered the levels of cleaved caspase-3, B-cell lymphoma-2 (Bcl-2) and Bcl-2 associated X protein. Moreover, silencing AEG-1 suppressed the migration and invasion of melanoma cells, reduced the expressions and activities of matrix metallopeptidase (MMP)-2 and MMP-9, and inhibited the activation of the Wnt/β-catenin signalling pathway in melanoma cells. Furthermore, in vivo experiments revealed that AEG-1 silencing inhibited the growth of melanoma xenografts in nude mice. In summary, our study demonstrates an oncogenic role of AEG-1 in melanoma and suggests that AEG-1 may serve as a potential therapeutic target in the treatment of melanoma.
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Affiliation(s)
- Yue Zhang
- Department of Dermatology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Ge Peng
- Department of Dermatology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Ying Wang
- Department of Dermatology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Lixia Cui
- Department of Dermatology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Wenqing Wu
- Department of Dermatology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Luan Wang
- Department of Dermatology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Chengyu Liu
- Department of Dermatology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Xiuping Han
- Department of Dermatology, Shengjing Hospital of China Medical University, Shenyang, China
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30
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AEG-1 knockdown in colon cancer cell lines inhibits radiation-enhanced migration and invasion in vitro and in a novel in vivo zebrafish model. Oncotarget 2018; 7:81634-81644. [PMID: 27835571 PMCID: PMC5348418 DOI: 10.18632/oncotarget.13155] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Accepted: 10/13/2016] [Indexed: 12/17/2022] Open
Abstract
Background Radiotherapy is a well-established anti-cancer treatment. Although radiotherapy has been shown to significantly decrease the local relapse in rectal cancer patients, the rate of distant metastasis is still very high. The aim of this study was to evaluate whether AEG-1 is involved in radiation-enhanced migration and invasion in vitro and in a novel in vivo zebrafish model. Results Migration and invasion were decreased in all the AEG-1 knockdown cell lines. Furthermore, we observed that radiation enhanced migration and invasion, while AEG-1 knockdown abolished this effect. The results from the zebrafish embryo model confirmed the results obtained in vitro. MMP-9 secretion and expression were decreased in AEG-1 knockdown cells. Materials and Methods We evaluated the involvement of AEG-1 in migration and invasion and, radiation-enhanced migration and invasion by Boyden chamber assay in three colon cancer cell lines and respective stable AEG-1 knockdown cell lines. Furthermore, we injected those cells into zebrafish embryos and evaluated the amount of disseminated cells into the tail. Conclusion AEG-1 knockdown inhibits migration and invasion, as well as radiation-enhanced invasion both in vitro and in vivo. We speculate that this is done via the downregulation of the intrinsic or radiation-enhanced MMP-9 expression by AEG-1 in the cancer cells. This study also shows, for the first time, that the zebrafish is a great model to study the early events in radiation-enhanced invasion.
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31
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Sun X, Zhai H, Chen X, Kong R, Zhang X. MicroRNA-1271 suppresses the proliferation and invasion of colorectal cancer cells by regulating metadherin/Wnt signaling. J Biochem Mol Toxicol 2018; 32. [PMID: 29315995 DOI: 10.1002/jbt.22028] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Accepted: 12/16/2017] [Indexed: 12/19/2022]
Affiliation(s)
- Xiaoli Sun
- Department of General Surgery, The Second Affiliated Hospital of Medical School; Xi'an Jiaotong University; Xi'an Shaanxi 710004 People's Republic of China
| | - Hongjun Zhai
- Department of General Surgery, The Second Affiliated Hospital of Medical School; Xi'an Jiaotong University; Xi'an Shaanxi 710004 People's Republic of China
| | - Xi Chen
- Department of General Surgery, The Second Affiliated Hospital of Medical School; Xi'an Jiaotong University; Xi'an Shaanxi 710004 People's Republic of China
| | - Ranran Kong
- Department of Thoracic Surgery, The Second Affiliated Hospital of Medical School; Xi'an Jiaotong University; Xi'an Shaanxi 710004 People's Republic of China
| | - Xinwu Zhang
- Department of General Surgery, The Second Affiliated Hospital of Medical School; Xi'an Jiaotong University; Xi'an Shaanxi 710004 People's Republic of China
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32
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Liu K, Jin J, Rong K, Zhuo L, Li P. MicroRNA‑675 inhibits cell proliferation and invasion in melanoma by directly targeting metadherin. Mol Med Rep 2017; 17:3372-3379. [PMID: 29257296 DOI: 10.3892/mmr.2017.8264] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Accepted: 11/21/2017] [Indexed: 11/06/2022] Open
Abstract
Melanoma is derived from melanocytes and accounts for ~80% of skin cancer-associated fatalities worldwide. The dysregulation of microRNAs (miRNAs/miRs) is involved in the development and progression of melanoma. Therefore, miRNAs may be novel diagnostic or prognostic biomarkers and promising therapeutic targets in the treatment of patients with melanoma. miR‑675 is differentially expressed in several types of human cancer and has important roles in the pathogenesis of several diseases. However, the expression levels and the biological roles of miR‑675 in melanoma remain unclear. Therefore, the present study aimed to assess the expression of miR‑675 in melanoma, explore the effects of miR‑675 on melanoma cells and investigate the underlying molecular mechanisms that may be involved in the actions of miR‑675. The present study indicated that miR‑675 expression was downregulated in melanoma tissues and cell lines. Functional assays demonstrated that the upregulation of miR‑675 impaired cell proliferation and invasion in melanoma. Bioinformatics analysis, luciferase reporter assay, reverse transcription‑quantitative polymerase chain reaction and western blot analysis demonstrated that metadherin (MTDH) was a direct target of miR‑675 in melanoma. The MTDH levels were upregulated in melanoma tissues and inversely correlated with the miR‑675 expression. Furthermore, restored MTDH expression rescued the inhibition effects in melanoma cells caused by miR‑675 overexpression. Thus, miR‑675 may be a potential therapeutic target for melanoma.
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Affiliation(s)
- Ke Liu
- Department of Plastic Surgery, Subei People's Hospital of Jiangsu Province, Yangzhou, Jiangsu 225001, P.R. China
| | - Junjun Jin
- Department of Plastic Surgery, Subei People's Hospital of Jiangsu Province, Yangzhou, Jiangsu 225001, P.R. China
| | - Kunjie Rong
- Department of Plastic Surgery, Subei People's Hospital of Jiangsu Province, Yangzhou, Jiangsu 225001, P.R. China
| | - Lukai Zhuo
- Department of Plastic Surgery, Subei People's Hospital of Jiangsu Province, Yangzhou, Jiangsu 225001, P.R. China
| | - Pingsong Li
- Department of Plastic Surgery, Subei People's Hospital of Jiangsu Province, Yangzhou, Jiangsu 225001, P.R. China
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33
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Zhang Y, Wang Y, Wang J. MicroRNA-584 inhibits cell proliferation and invasion in non-small cell lung cancer by directly targeting MTDH. Exp Ther Med 2017; 15:2203-2211. [PMID: 29434826 DOI: 10.3892/etm.2017.5624] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Accepted: 11/21/2017] [Indexed: 12/14/2022] Open
Abstract
Lung cancer is the third most frequent human malignant tumour and the leading cause of cancer-associated mortality worldwide. Emerging lines of evidence have demonstrated that microRNAs (miRNAs) are upregulated or downregulated in non-small cell lung cancer (NSCLC), and this phenomenon is involved in the regulation of various processes during tumorigenesis and progression, including tumour groWTh, apoptosis, cell invasion, and tumour metastasis. Therefore, understanding the molecular mechanism that associates abnormally expressed miRNAs with NSCLC formation and development may lead to the identification of novel diagnostic, and therapeutic targets for patients with NSCLC. miRNA-584 (miR-584) functions as a tumour suppressor in several types of cancer. However, the expression pattern, detailed biological function and underlying molecular mechanism of miR-584 in NSCLC remain unclear. Therefore, the present study detected the expression of miR-584 in NSCLC, investigated its role in NSCLC cells and determined its underlying molecular mechanism. In the current study, it was demonstrated that miR-584 was downregulated in NSCLC tissues and cell lines. Low miR-584 expression was correlated with tumour size, tumour node metastasis stage and distant metastasis. Overexpression of miR-584 inhibited cell proliferation and invasion in NSCLC. Additionally, metadherin was identified as a direct target gene of miR-584 in NSCLC as confirmed by a series of experiments. Moreover, upregulation of miR-584 was involved in the regulation of the phosphatase and tensin homolog/Akt serine/threonine kinase signalling pathway in NSCLC. Thus, miR-584 may serve as a tumor-suppressor, and the results of the present study provide a reference for future research into the potential mechanisms underlying NSCLC progression.
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Affiliation(s)
- Yixiang Zhang
- Department of Thoracic Surgery, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China
| | - Yanjun Wang
- Department of Thoracic Surgery, Dalian University Affiliated Xinhua Hospital, Dalian, Liaoning 116011, P.R. China
| | - Jinguang Wang
- Department of Thoracic Surgery, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China
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34
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Liao Z, Li Y, Zhou Y, Huang Q, Dong J. MicroRNA-197 inhibits gastric cancer progression by directly targeting metadherin. Mol Med Rep 2017; 17:602-611. [PMID: 29115517 DOI: 10.3892/mmr.2017.7908] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Accepted: 08/17/2017] [Indexed: 11/05/2022] Open
Abstract
Gastric cancer is the fifth most frequent malignancy and the fourth most common cause of cancer‑associated mortality worldwide. MicroRNAs (miRNAs) are a group of small RNAs that regulate several cellular processes. In particular, a large number of miRNAs are involved in gastric cancer formation and progression. Thus, miRNAs may be considered as effective diagnostic biomarkers and therapeutic methods for gastric cancer. The aim of the current study was to detect miRNA (miR)‑197 expression in gastric cancer and to investigate its biological role and associated mechanism in gastric cancer. In the present study, miR‑197 expression was demonstrated to be considerably downregulated in gastric cancer tissues and cell lines. Its low expression level was associated with tumour size, invasive depth, tumour‑node‑metastasis staging and lymph node metastasis. High expression of miR‑197 inhibited tumour cell proliferation and invasion in vitro. Subsequently, metadherin (MTDH) was identified as a direct target gene of miR‑197 in gastric cancer, and this was confirmed by bioinformatics analysis, Dual‑luciferase reporter assay, reverse transcription quantitative polymerase chain reaction and western blot analysis. MTDH expression was upregulated in gastric cancer and was inversely correlated with miR‑197 expression levels. In addition, MTDH overexpression prevented the proliferation and inhibited invasion induced by miR‑197 overexpression. In addition, miR‑197 was demonstrated to regulate the phosphatase and tensin homolog (PTEN)/AKT signalling pathway in gastric cancer. The results of the present study suggested that miR‑197 serves a tumour‑suppressing role in human gastric carcinogenesis and progression by regulating the MTDH/PTEN/AKT signalling pathway. The miR‑197/MTDH axis may provide a novel effective therapeutic target for patients with gastric cancer.
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Affiliation(s)
- Zhiwei Liao
- Department of General Surgery, Renhe Hospital, Shanghai 200431, P.R. China
| | - Yue Li
- Department of General Surgery, Renhe Hospital, Shanghai 200431, P.R. China
| | - Yuanhang Zhou
- Department of General Surgery, Renhe Hospital, Shanghai 200431, P.R. China
| | - Qi Huang
- Department of General Surgery, Renhe Hospital, Shanghai 200431, P.R. China
| | - Jian Dong
- Department of General Surgery, Renhe Hospital, Shanghai 200431, P.R. China
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35
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Ding Q, Chen Y, Dong S, Xu X, Liu J, Song P, Yu C, Ma Z. Astrocyte elevated gene-1 is overexpressed in non-small-cell lung cancer and associated with increased tumour angiogenesis. Interact Cardiovasc Thorac Surg 2017; 26:395-401. [PMID: 29049797 DOI: 10.1093/icvts/ivx340] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Accepted: 09/17/2017] [Indexed: 12/17/2022] Open
Affiliation(s)
- Qiuping Ding
- Department of Surgery, Huzhou Central Hospital, Huzhou, Zhejiang, China
| | - Yingrong Chen
- Huzhou Key Laboratory of Molecular Medicine, Huzhou Central Hospital, Huzhou, Zhejiang, China
| | - Shunli Dong
- Huzhou Key Laboratory of Molecular Medicine, Huzhou Central Hospital, Huzhou, Zhejiang, China
| | - Xuting Xu
- Huzhou Key Laboratory of Molecular Medicine, Huzhou Central Hospital, Huzhou, Zhejiang, China
| | - Jin Liu
- Department of Pathology, Huzhou Central Hospital, Huzhou, Zhejiang, China
| | - Pengtao Song
- Department of Pathology, Huzhou Central Hospital, Huzhou, Zhejiang, China
| | - Caihua Yu
- Department of Surgery, Huzhou Central Hospital, Huzhou, Zhejiang, China
| | - Zhihong Ma
- Huzhou Key Laboratory of Molecular Medicine, Huzhou Central Hospital, Huzhou, Zhejiang, China
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Ma Z, Chen Y, Dong S, Xu X, Liu J, Song P, Yu C, Dai L. AEG-1 mRNA expression in non-small cell lung cancer is associated with increased tumor angiogenesis. Pathol Res Pract 2017; 213:1257-1263. [PMID: 28941723 DOI: 10.1016/j.prp.2017.09.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Revised: 08/05/2017] [Accepted: 09/05/2017] [Indexed: 12/27/2022]
Abstract
Astrocyte-elevated gene-1 (AEG-1) is implicated in the oncogenesis and angiogenesis of various types of human malignant disease. However, the angiogenesis roles of AEG-1 in non-small cell lung cancer (NSCLC) remain to be further elucidated. In the present study, the expression level of AEG-1 mRNA in seven human lung cell lines and 89 paired tissue samples (tumor tissues (TTs) and pair-matched normal adjacent tissues (PMNATs)) from NSCLC patients was detected by real-time PCR. Staining of vascular endothelial growth factor (VEGF) and intratumoral microvessel density (iMVD, labeled by CD105) were assessed by immunohistochemistry. Furthermore, cell migration and invasion were evaluated by wound healing assay and transwell assays. AEG-1 mRNA level was significantly higher in human lung cancer cells and TTs than that in human normal bronchial epithelial cell line 16HBE and PMNATs, respectively (P<0.001). Higher AEG-1 mRNA level in patients with NSCLC was correlated with clinical stages (P=0.028), differentiation (P=0.042), and lymph node metastasis (P=0.004). Moreover, Upregulated AEG-1 mRNA expression level was associated with higher tumor angiogenesis, reflected by the increase of VEGF expression and iMVD counting (P=0.021, P<0.001). However, 95D cell line transfected with AEG-1 siRNA oligos (siAEG-1) exhibited no significant decrease of cell invasion or migration capacities when compared with the control cells (P>0.05).These results suggested that AEG-1 may play important roles at the transcription level in malignant transformation and tumor angiogenesis in NSCLC, and anti-AEG-1 mRNA expression may be a novel potential strategy for anti-angiogenic therapy of NSCLC.
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Affiliation(s)
- Zhihong Ma
- Huzhou Key Laboratory of Molecular Medicine, Huzhou Central Hospital, Huzhou, Zhejiang, China
| | - Yingrong Chen
- Huzhou Key Laboratory of Molecular Medicine, Huzhou Central Hospital, Huzhou, Zhejiang, China
| | - Shunli Dong
- Huzhou Key Laboratory of Molecular Medicine, Huzhou Central Hospital, Huzhou, Zhejiang, China
| | - Xuting Xu
- Huzhou Key Laboratory of Molecular Medicine, Huzhou Central Hospital, Huzhou, Zhejiang, China
| | - Jin Liu
- Department of Pathology, Huzhou Central Hospital, Huzhou, Zhejiang, China
| | - Pengtao Song
- Department of Pathology, Huzhou Central Hospital, Huzhou, Zhejiang, China
| | - Caihua Yu
- Department of Surgery, Huzhou Central Hospital, Huzhou, Zhejiang, China
| | - Licheng Dai
- Huzhou Key Laboratory of Molecular Medicine, Huzhou Central Hospital, Huzhou, Zhejiang, China.
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Qiao W, Cao N, Yang L. MicroRNA-154 inhibits the growth and metastasis of gastric cancer cells by directly targeting MTDH. Oncol Lett 2017; 14:3268-3274. [PMID: 28927076 PMCID: PMC5588056 DOI: 10.3892/ol.2017.6558] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Accepted: 02/03/2017] [Indexed: 11/06/2022] Open
Abstract
MicroRNAs (miRNAs) are a group of non-protein-coding, highly conserved single-stranded RNA molecules. The abnormal expression of miRNAs has been demonstrated to have an important function in the carcinogenesis and progression of gastric cancer. microRNA-154 (miR-154) has been reported to be downregulated in non-small cell lung, colorectal and prostate cancer. However, the expression and roles of miR-154 in gastric cancer remain to be established. The present study measured the expression levels of miR-154 in gastric cancer tissues and cell lines. miR-154 was found to be significantly downregulated in gastric cancer tissues and cell lines. In addition, functional studies indicated that the overexpression of miR-154 inhibited the proliferation, migration and invasion of gastric cancer cells. Using TargetScan, a dual luciferase reporter assay, reverse transcription-quantitative polymerase chain reaction and western blot analysis, metadherin (MTDH) was revealed as a novel miR-154 target. In addition, knocking down MTDH lead to a similar effect as overexpressing-154 in gastric cells. The present findings indicate that miR-154 was downregulated in gastric cancer, and inhibited tumor behaviors of gastric cancer cells partially through the downregulation of MTDH. Therefore, the miR-154/MTDH axis may be a novel therapeutic to treat patients with gastric cancer.
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Affiliation(s)
- Wenhui Qiao
- Department of General Surgery, The First Hospital of Lanzhou University, Chengguan, Lanzhou, Gansu 730000, P.R. China,Correspondence to: Professor Wenhui Qiao, Department of General Surgery, The First Hospital of Lanzhou University. 1 Donggang Dong Road, Chengguan, Lanzhou, Gansu 730000, P.R. China, E-mail:
| | - Nong Cao
- Department of General Surgery, The First Hospital of Lanzhou University, Chengguan, Lanzhou, Gansu 730000, P.R. China
| | - Lei Yang
- Department of General Surgery, The First Hospital of Lanzhou University, Chengguan, Lanzhou, Gansu 730000, P.R. China
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Song H, Rao Y, Zhang G, Kong X. MicroRNA-384 Inhibits the Growth and Invasion of Renal Cell Carcinoma Cells by Targeting Astrocyte Elevated Gene 1. Oncol Res 2017; 26:457-466. [PMID: 28877780 PMCID: PMC7844631 DOI: 10.3727/096504017x15035025554553] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
MicroRNAs (miRNAs) are emerging as pivotal regulators in the development and progression of various cancers, including renal cell carcinoma (RCC). MicroRNA-384 (miR-384) has been found to be an important cancer-related miRNA in several types of cancers. However, the role of miR-384 in RCC remains unclear. In this study, we aimed to investigate the potential function of miR-384 in regulating tumorigenesis in RCC. Here we found that miR-384 was significantly downregulated in RCC tissues and cell lines. Overexpression of miR-384 significantly inhibited the growth and invasion of RCC cells, whereas inhibition of miR-384 had the opposite effects. Bioinformatic analysis and luciferase reporter assay showed that miR-384 directly targeted the 3′-untranslated region of astrocyte elevated gene 1 (AEG-1). Further data showed that miR-384 could negatively regulate the expression of AEG-1 in RCC cells. Importantly, miR-384 expression was inversely correlated with AEG-1 expression in clinical RCC specimens. Moreover, miR-384 regulates the activation of Wnt signaling. Overexpression of AEG-1 significantly reversed the antitumor effects of miR-384. Overall, these findings suggest that miR-384 suppresses the growth and invasion of RCC cells via downregulation of AEG-1, providing a potential therapeutic target for the treatment of RCC.
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Affiliation(s)
- Haitao Song
- Department of Urinary Surgery, ChinaJapan Union Hospital, Jilin UniversityChangchunP.R. China
| | - Yanwei Rao
- Department of Critical Care Medicine, Jilin Province Peoples HospitalChangchunP.R. China
| | - Gang Zhang
- Department of Urinary Surgery, ChinaJapan Union Hospital, Jilin UniversityChangchunP.R. China
| | - Xiangbo Kong
- Department of Urinary Surgery, ChinaJapan Union Hospital, Jilin UniversityChangchunP.R. China
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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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Emdad L, Das SK, Hu B, Kegelman T, Kang DC, Lee SG, Sarkar D, Fisher PB. AEG-1/MTDH/LYRIC: A Promiscuous Protein Partner Critical in Cancer, Obesity, and CNS Diseases. Adv Cancer Res 2016; 131:97-132. [PMID: 27451125 DOI: 10.1016/bs.acr.2016.05.002] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Since its original discovery in 2002, AEG-1/MTDH/LYRIC has emerged as a primary regulator of several diseases including cancer, inflammatory diseases, and neurodegenerative diseases. AEG-1/MTDH/LYRIC has emerged as a key contributory molecule in almost every aspect of cancer progression, including uncontrolled cell growth, evasion of apoptosis, increased cell migration and invasion, angiogenesis, chemoresistance, and metastasis. Additionally, recent studies highlight a seminal role of AEG-1/MTDH/LYRIC in neurodegenerative diseases and obesity. By interacting with multiple protein partners, AEG-1/MTDH/LYRIC plays multifaceted roles in the pathogenesis of a wide variety of diseases. This review discusses the current state of understanding of AEG-1/MTDH/LYRIC regulation and function in cancer and other diseases with a focus on its association/interaction with several pivotal protein partners.
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Affiliation(s)
- L Emdad
- Virginia Commonwealth University, School of Medicine, Richmond, VA, United States; VCU Massey Cancer Center, Virginia Commonwealth University, School of Medicine, Richmond, VA, United States; VCU Institute of Molecular Medicine, Virginia Commonwealth University, School of Medicine, Richmond, VA, United States.
| | - S K Das
- Virginia Commonwealth University, School of Medicine, Richmond, VA, United States; VCU Massey Cancer Center, Virginia Commonwealth University, School of Medicine, Richmond, VA, United States; VCU Institute of Molecular Medicine, Virginia Commonwealth University, School of Medicine, Richmond, VA, United States
| | - B Hu
- Virginia Commonwealth University, School of Medicine, Richmond, VA, United States
| | - T Kegelman
- Virginia Commonwealth University, School of Medicine, Richmond, VA, United States
| | - D-C Kang
- Ilsong Institute of Life Science, Hallym University, Anyang, Republic of Korea
| | - S-G Lee
- Cancer Preventive Material Development Research Center, Institute of Korean Medicine, College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - D Sarkar
- Virginia Commonwealth University, School of Medicine, Richmond, VA, United States; VCU Massey Cancer Center, Virginia Commonwealth University, School of Medicine, Richmond, VA, United States; VCU Institute of Molecular Medicine, Virginia Commonwealth University, School of Medicine, Richmond, VA, United States
| | - P B Fisher
- Virginia Commonwealth University, School of Medicine, Richmond, VA, United States; VCU Massey Cancer Center, Virginia Commonwealth University, School of Medicine, Richmond, VA, United States; VCU Institute of Molecular Medicine, Virginia Commonwealth University, School of Medicine, Richmond, VA, United States.
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Moore RF, Sholl AB, Kidd L, Al-Qurayshi Z, Tsumagari K, Emejulu OM, Kholmatov R, Friedlander P, Abd Elmageed ZY, Kandil E. Metadherin Expression is Associated with Extrathyroidal Extension in Papillary Thyroid Cancer Patients. Ann Surg Oncol 2016; 23:2883-8. [DOI: 10.1245/s10434-016-5245-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Indexed: 12/13/2022]
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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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43
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MTDH genetic variants in colorectal cancer patients. Sci Rep 2016; 6:23163. [PMID: 26983693 PMCID: PMC4794727 DOI: 10.1038/srep23163] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Accepted: 02/23/2016] [Indexed: 12/17/2022] Open
Abstract
The colorectal carcinogenesis is a complex process encompassing genetic alterations. The oncoprotein AEG-1, encoded by the MTDH gene, was shown previously to be involved in colorectal cancer (CRC). The aim of this study was to determine the frequency and the spectrum of MTDH variants in tumor tissue, and their relationship to clinicopathological variables in CRC patients. The study included tumors from 356 unselected CRC patients. Mutation analysis of the MTDH gene, including coding region and adjacent intronic sequences, was performed by direct DNA sequencing. The corresponding normal colorectal tissue was analyzed in the carriers of exonic variant to confirm germline or somatic origin. We detected 42 intronic variants, where 25 were novel. Furthermore, we found 8 exonic variants of which four, one missense (c.977C > G-germline) and three frameshift mutations (c.533delA-somatic, c.1340dupA-unknown origin, c.1731delA-unknown origin), were novel. In silico prediction analyses suggested four deleterious variants (c.232G > T, c.533delA, c.1340dupA, and c.1731delA). There were no correlations between the MTDH variants and tumor stage, differentiation or patient survival. We described several novel exonic and intronic variants of the MTDH gene. The detection of likely pathogenic truncating mutations and alterations in functional protein domains indicate their clinical significance, although none of the variants had prognostic potential.
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Li WN, Wei JL, Wu M, Wu W, Huang Y, Xie MW, Han H. AEG-1 participates in high glucose-induced activation of Rho kinase and epithelial-mesenchymal transition in proximal tubular epithelial cells. ASIAN PAC J TROP MED 2015; 8:1076-1078. [PMID: 26706683 DOI: 10.1016/j.apjtm.2015.11.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Revised: 10/20/2015] [Accepted: 11/03/2015] [Indexed: 10/22/2022] Open
Abstract
OBJECTIVE To prove whether astrocyte elevated gene-1 (AEG-1) plays a role in high glucose-stimulated Rho kinase activation and epithelial-mesenchymal transition (EMT) in human renal tubular epithelial (HK-2) cells. METHODS The protein levels of AEG-1, alpha-smooth muscle actin, E-cadherin and MYPT1 were determined by Western blot. RESULTS AEG-1 protein level was upregulated in HK-2 cells stimulated with high glucose. AEG-1 siRNA downregulated Rho kinase protein expression and blocked high glucose-induced EMT. CONCLUSIONS Our results show that AEG-1 acts a key role in high glucose-induced activation of Rho kinase and EMT in HK-2 cells.
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Affiliation(s)
- Wen-Ning Li
- Department of Nephrology, Hebei Medical University, Shijiazhuang, Hebei 050011, China; Department of Nephrology, Hainan General Hospital, Haikou, Hainan 570311, China
| | - Jia-Li Wei
- Department of Nephrology, Hainan General Hospital, Haikou, Hainan 570311, China.
| | - Ming Wu
- Hainan Health Department, Haikou, Hainan 570311, China
| | - Wei Wu
- Department of Nephrology, Hainan General Hospital, Haikou, Hainan 570311, China
| | - Yun Huang
- Department of Nephrology, Hainan General Hospital, Haikou, Hainan 570311, China
| | - Mao-Wei Xie
- Department of Nephrology, Hainan General Hospital, Haikou, Hainan 570311, China
| | - Hui Han
- Department of Nephrology, Hainan General Hospital, Haikou, Hainan 570311, China
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Wang B, Shen ZL, Jiang KW, Zhao G, Wang CY, Yan YC, Yang Y, Zhang JZ, Shen C, Gao ZD, Ye YJ, Wang S. MicroRNA-217 functions as a prognosis predictor and inhibits colorectal cancer cell proliferation and invasion via an AEG-1 dependent mechanism. BMC Cancer 2015; 15:437. [PMID: 26016795 PMCID: PMC4446846 DOI: 10.1186/s12885-015-1438-z] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Accepted: 05/14/2015] [Indexed: 12/21/2022] Open
Abstract
Background Recent studies have indicated the possible function of miR-217 in tumorigenesis. However, the roles of miR-217 in colorectal cancer (CRC) are still largely unknown. Methods We examined the expression of miR-217 and AEG-1 in 50 CRC tissues and the corresponding noncancerous tissues by qRT-PCR. The clinical significance of miR-217 was analyzed. CRC cell lines with miR-217 upregulation and AEG-1 silencing were established and the effects on tumor growth in vitro and in vivo were assessed. Dual-luciferase reporter gene assays were also performed to investigate the interaction between miR-217 and AEG-1. Results Our data demonstrated that miR-217 was significantly downregulated in 50 pairs of colorectal cancer tissues. MiR-217 expression levels were closely correlated with tumor differentiation. Moreover, decreased miR-217 expression was also associated with shorter overall survival of CRC patients. MiR-217 overexpression significantly inhibited proliferation, colony formation and invasiveness of CRC cells by promoting apoptosis and G0/G1 phase arrest. Interestingly, ectopic miR-217 expression decreased AEG-1 expression and repressed luciferase reporter activity associated with the AEG-1 3′-untranslated region (UTR). AEG-1 silencing resulted in similar biological behavior changes to those associated with miR-217 overexpression. Finally, in a nude mouse xenografted tumor model, miR-217 overexpression significantly suppressed CRC cell growth. Conclusions Our findings suggest that miR-217 has considerable value as a prognostic marker and potential therapeutic target in CRC. Electronic supplementary material The online version of this article (doi:10.1186/s12885-015-1438-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Bo Wang
- Department of Gastroenterological Surgery, Peking University People's Hospital, No.11 Xizhimen South Street, Xicheng District, Beijing, 100044, P.R. China.
| | - Zhan-Long Shen
- Department of Gastroenterological Surgery, Peking University People's Hospital, No.11 Xizhimen South Street, Xicheng District, Beijing, 100044, P.R. China.
| | - Ke-Wei Jiang
- Department of Gastroenterological Surgery, Peking University People's Hospital, No.11 Xizhimen South Street, Xicheng District, Beijing, 100044, P.R. China.
| | - Gang Zhao
- Pancreatic Disease Institute, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China.
| | - Chun-You Wang
- Pancreatic Disease Institute, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China.
| | - Yi-Chao Yan
- Department of Gastroenterological Surgery, Peking University People's Hospital, No.11 Xizhimen South Street, Xicheng District, Beijing, 100044, P.R. China.
| | - Yang Yang
- Department of Gastroenterological Surgery, Peking University People's Hospital, No.11 Xizhimen South Street, Xicheng District, Beijing, 100044, P.R. China.
| | - Ji-Zhun Zhang
- Department of Gastroenterological Surgery, Peking University People's Hospital, No.11 Xizhimen South Street, Xicheng District, Beijing, 100044, P.R. China.
| | - Chao Shen
- Department of Gastroenterological Surgery, Peking University People's Hospital, No.11 Xizhimen South Street, Xicheng District, Beijing, 100044, P.R. China.
| | - Zhi-Dong Gao
- Department of Gastroenterological Surgery, Peking University People's Hospital, No.11 Xizhimen South Street, Xicheng District, Beijing, 100044, P.R. China.
| | - Ying-Jiang Ye
- Department of Gastroenterological Surgery, Peking University People's Hospital, No.11 Xizhimen South Street, Xicheng District, Beijing, 100044, P.R. China.
| | - Shan Wang
- Department of Gastroenterological Surgery, Peking University People's Hospital, No.11 Xizhimen South Street, Xicheng District, Beijing, 100044, P.R. China.
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Shi X, Wang X. The role of MTDH/AEG-1 in the progression of cancer. Int J Clin Exp Med 2015; 8:4795-4807. [PMID: 26131054 PMCID: PMC4484038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Accepted: 03/14/2015] [Indexed: 06/04/2023]
Abstract
Cancer progression is driven by an accumulation of numerous genetic and epigenetic alterations in cancer cells themselves as well as constructional changes in their microenvironment. Metadherin (MTDH)/Astrocyte elevated gene-1 (AEG-1) has emerged in recent years as a key contributor to the carcinogenic process in diverse organs and tissues. As a multifunctional mediator of carcinogenesis, MTDH/AEG-1 has been found to be involved in multiple signaling pathways, such as: PI3K/Akt, NF-κB, Wnt/β-catenin and MAPK. Overexpression of MTDH/AEG-1 is observed in a variety of cancers belonging to all biological systems, and has crucial relevance with cancer progression, including initiation, proliferation, invasion, metastasis and chemoresistance. In addition, a plethora of studies have convincingly demonstrated that MTDH/AEG-1 overexpression markedly correlates with poor clinical prognosis. These findings suggest that MTDH/AEG-1 may be used as a potential biomarker for the diagnosis of cancer, monitoring of cancer progression, and target therapies which may simultaneously inhibit tumor growth, block metastasis, and intensify the efficacy of chemotherapeutic treatments.
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Affiliation(s)
- Xue Shi
- Department of Hematology, Shandong Provincial Hospital Affiliated to Shandong UniversityJinan 250012, Shandong, China
- Department of Hematology, The Affiliated Hospital of Qingdao UniversityQingdao 266003, Shandong, China
| | - Xin Wang
- Department of Hematology, Shandong Provincial Hospital Affiliated to Shandong UniversityJinan 250012, Shandong, China
- Institute of Diagnostics, Shandong UniversityJinan 250012, Shandong, China
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Wang P, Yin B, Shan L, Zhang H, Cui J, Zhang M, Song Y. RNA interference-mediated knockdown of astrocyte elevated gene-1 inhibits growth, induces apoptosis, and increases the chemosensitivity to 5-fluorouracil in renal cancer Caki-1 cells. Mol Cells 2014; 37:857-64. [PMID: 25431427 PMCID: PMC4275702 DOI: 10.14348/molcells.2014.0081] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2014] [Revised: 08/18/2014] [Accepted: 09/18/2014] [Indexed: 12/14/2022] Open
Abstract
Astrocyte elevated gene-1 (AEG-1) is a recently discovered oncogene that has been reported to be highly expressed in various types of malignant tumors, including renal cell carcinoma. However, the precise role of AEG-1 in renal cancer cell proliferation and apoptosis has not been clarified. In this study, we transfected the renal cancer cell line Caki-1 with a plasmid expressing AEG-1 short hairpin RNA (shRNA) and obtained cell colonies with stable knockdown of AEG-1. We found that AEG-1 down-regulation inhibited cell proliferation and colony formation and arrested cell cycle progression at the sub-G1 and G0/G1 phase. Western blot analysis indicated that the expression of proliferating cell nuclear antigen (PCNA), cyclin D1 and cyclin E were significantly reduced following AEG-1 down-regulation. In addition, AEG-1 knockdown led to the appearance of apoptotic bodies in renal cancer cells, and the ratio of apoptotic cells significantly increased. Expression of the anti-apoptotic factor Bcl-2 was dramatically reduced, whereas the pro-apoptotic factors Bax, caspase-3 and poly (ADP-ribose) polymerase (PARP) were significantly activated. Finally, AEG-1 knockdown in Caki-1 cells remarkably suppressed cell proliferation and enhanced cell apoptosis in response to 5-fluorouracil (5-FU) treatment, suggesting that AEG-1 inhibition sensitizes Caki-1 cells to 5-FU. Taken together, our data suggest that AEG-1 plays an important role in renal cancer formation and development and may be a potential target for future gene therapy for renal cell carcinoma.
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Affiliation(s)
- Peng Wang
- The Second Department of Urology, Shengjing Hospital of China Medical University, Shenyang 110004,
People’s Republic of China
| | - Bo Yin
- The Second Department of Urology, Shengjing Hospital of China Medical University, Shenyang 110004,
People’s Republic of China
| | - Liping Shan
- The Second Department of Urology, Shengjing Hospital of China Medical University, Shenyang 110004,
People’s Republic of China
| | - Hui Zhang
- The Second Department of Urology, Shengjing Hospital of China Medical University, Shenyang 110004,
People’s Republic of China
| | - Jun Cui
- The Second Department of Urology, Shengjing Hospital of China Medical University, Shenyang 110004,
People’s Republic of China
| | - Mo Zhang
- The Second Department of Urology, Shengjing Hospital of China Medical University, Shenyang 110004,
People’s Republic of China
| | - Yongsheng Song
- The Second Department of Urology, Shengjing Hospital of China Medical University, Shenyang 110004,
People’s Republic of China
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Shen X, Si Y, Yang Z, Wang Q, Yuan J, Zhang X. MicroRNA-542-3p suppresses cell growth of gastric cancer cells via targeting oncogene astrocyte-elevated gene-1. Med Oncol 2014; 32:361. [PMID: 25432696 DOI: 10.1007/s12032-014-0361-5] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2014] [Accepted: 11/13/2014] [Indexed: 12/21/2022]
Abstract
MicroRNAs (miRNAs) have been suggested to play critical roles in tumorigenesis as well as in the development of therapies for the treatment of cancers. However, the tumor-associated miRNAs in gastric cancers remain poorly understood. Here, we report on miR-542-3p in gastric cancers, which has been widely studied in other cancers as a tumor suppressor. Real-time quantitative PCR analysis demonstrated that miR-542-3p was significantly down-regulated in gastric cancer tissues (p < 0.0001) and cell lines (p < 0.001). Overexpression of miR-542-3p significantly inhibited cell growth of gastric cancer cells both in vitro (p < 0.01) and in vivo (p < 0.01). Notably, overexpression of miR-542-3p apparently reduced the protein expression of astrocyte-elevated gene-1 (AEG-1) (p < 0.01). The dual-luciferase reporter assay validated that miR-542-3p directly bound the 3'-untranslated region (UTR) of AEG-1, which could be abolished by mutation of the predicted miR-542-3p binding site. Furthermore, overexpression of miR-542-3p markedly inhibited the activation of oncogenic signaling pathways including the Akt, β-catenin and nuclear factor-κB pathways. Additionally, overexpression of AEG-1 without the 3'-UTR partially reversed the cell growth arrest induced by miR-542-3p overexpression in gastric cancer cells (p < 0.05). Taken together, these data suggest that miR-542-3p might function as a tumor suppressor in gastric cancer, potentially by targeting the oncogene AEG-1, implying a potential role for miR-542-3p in the development of therapeutic methods for gastric cancer.
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Affiliation(s)
- Xinsheng Shen
- Department of Minimally Invasive Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
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49
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Dong L, Qin S, Li Y, Zhao L, Dong S, Wang Y, Zhang C, Han S. High expression of astrocyte elevated gene-1 is associated with clinical staging, metastasis, and unfavorable prognosis in gastric carcinoma. Tumour Biol 2014; 36:2169-78. [PMID: 25407490 DOI: 10.1007/s13277-014-2827-7] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Accepted: 11/06/2014] [Indexed: 01/01/2023] Open
Abstract
More and more evidence has demonstrated that astrocyte elevated gene-1 (AEG-1) is tightly associated with progression, metastasis, and unfavorable prognosis in many malignancies. However, the potential biological role of AEG-1 in gastric carcinoma (GC) has not been thoroughly delineated. In the current study, we found that AEG-1 mRNA and protein levels in GC tissues were significantly higher than those in normal gastric mucosa (P < 0.05). Simultaneously, statistical analysis displayed a significant correlation of high AEG-1 mRNA and protein expressions with differentiation status, TNM staging, invasive depth, and lymph node metastasis (P < 0.05). Most importantly, expressions of AEG-1 mRNA and protein in high clinical staging and metastatic GC tissues were dramatically higher than those in low clinical staging and non-metastatic GC tissues (P < 0.05). Stepwise investigation confirmed that the survival time of the patients with high AEG-1 level was shorter than those with low AEG-1 level or negative AEG-1 staining. Taken altogether, our data presented herein suggest that AEG-1 may be a novel predictor for metastasis and prognosis of the patients with GC.
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Affiliation(s)
- Liangpeng Dong
- Department of General Surgery, the First Affiliated Hospital of Xinxiang Medical University, Weihui, Henan, 453100, China
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Haug S, Schnerch D, Halbach S, Mastroianni J, Dumit VI, Follo M, Hasenburg A, Köhler M, Dierbach H, Herzog S, Proske A, Werner M, Dengjel J, Brummer T, Laßmann S, Wäsch R, Zeiser R. Metadherin exon 11 skipping variant enhances metastatic spread of ovarian cancer. Int J Cancer 2014; 136:2328-40. [PMID: 25346496 DOI: 10.1002/ijc.29289] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2014] [Accepted: 10/17/2014] [Indexed: 11/12/2022]
Abstract
Metastatic ovarian cancer has a dismal prognosis and current chemotherapeutic approaches have very limited success. Metadherin (MTDH) is expressed in human ovarian cancer tissue and its expression inversely correlates with patients overall survival. Consistent with these studies, we observed MTDH expression in tissue specimens of FIGO Stage III ovarian carcinomas (72/83 cases). However, we also observed this in normal human ovarian epithelial (OE) cells, which raised the question of whether MTDH-variants with functional differences exist. We identified a novel MTDH exon 11 skipping variant (MTDHdel) which was seen at higher levels in ovarian cancer compared to benign OE cells. We analyzed MTDH-binding partner interactions and found that 12 members of the small ribosomal subunit and several mRNA binding proteins bound stronger to MTDHdel than to wildtype MTDH which indicates differential effects on gene translation. Knockdown of MTDH in ovarian cancer cells reduced the amount of distant metastases and improved the survival of ovarian cancer-bearing mice. Selective overexpression of the MTDHdel enhanced murine and human ovarian cancer progression and caused a malignant phenotype in originally benign human OE cells. MTDHdel was detectable in microdissected ovarian cancer cells of some human tissue specimens of ovarian carcinomas. In summary, we have identified a novel MTDH exon 11 skipping variant that shows enhanced binding to small ribosomal subunit members and that caused reduced overall survival of ovarian cancer bearing mice. Based on the findings in the murine system and in human tissues, MTDHdel must be considered a major promalignant factor for ovarian cancer.
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Affiliation(s)
- Stefan Haug
- Department of Hematology and Oncology, Freiburg University Medical Center, University of Freiburg, Germany; Department of Psychiatry and Psychotherapy, Freiburg University Medical Center, University of Freiburg, Germany
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