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Sheng Y, Yin D, Zeng Q. Using the metabolite alterations monitoring the AEG-1 expression level and cell biological behaviour of U251 cell in vitro. PLoS One 2023; 18:e0291092. [PMID: 37656734 PMCID: PMC10473485 DOI: 10.1371/journal.pone.0291092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 08/22/2023] [Indexed: 09/03/2023] Open
Abstract
Astrocyte elevated gene-1 (AEG-1) is an important oncogene that overexpresses in gliomas and plays a vital role in their occurrence and progression. However, few reports have shown which biomarkers could reflect the level of AEG-1 expression in vivo so far. In recent years, intracellular metabolites monitored by proton magnetic resonance spectroscopy (1H MRS) as non-invasive imaging biomarkers have been applied to the precise diagnosis and therapy feedback of gliomas. Therefore, understanding the correlation between 1H MRS metabolites and AEG-1 gene expression in U251 cells may help to identify relevant biomarkers. This study constructed three monoclonal AEG-1-knockout U251 cell lines using the clustered regularly interspaced short palindromic repeat (CRISPR) /Cas9 technique and evaluated the biological behaviors and metabolite ratios of these cell lines. With the decline in AEG-1 expression, the apoptosis rate of the AEG-1-knockout cell lines increased. At the same time, the metastatic capacities decreased, and the relative contents of total choline (tCho) and lactate (Lac) were also reduced. In conclusion, deviations in AEG-1 expression influence the apoptosis rate and metastasis capacity of U251 cells, which the 1H MRS metabolite ratio could monitor. The tCho/creatinine(Cr) and Lac/Cr ratios positively correlated with the AEG-1 expression and malignant cell behavior. This study may provide potential biomarkers for accurate preoperative diagnosis and future AEG-1-targeting treatment evaluation of gliomas in vivo.
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Affiliation(s)
- Yurui Sheng
- Department of Radiology, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Jinan, Shandong, China
| | - Di Yin
- Department of Radiology, The Second Hospital of Tianjin Medical University, Tianjin, China
| | - Qingshi Zeng
- Department of Radiology, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Jinan, Shandong, China
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2
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Aldabbas R, Shaker OG, Ismail MF, Fathy N. miRNA-559 and MTDH as possible diagnostic markers of psoriasis: Role of PTEN/AKT/FOXO pathway in disease pathogenesis. Mol Cell Biochem 2023; 478:1427-1438. [PMID: 36348199 PMCID: PMC10209283 DOI: 10.1007/s11010-022-04599-7] [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: 04/18/2022] [Accepted: 10/24/2022] [Indexed: 11/09/2022]
Abstract
Psoriasis is a persistent, inflammatory, autoimmune skin disorder which can be elicited by genetic and environmental factors. Several microRNAs (miRNAs) that are abnormally expressed in psoriasis have emerged as an interesting candidate in psoriasis pathogenesis. However, the expression profile and function of miRNA-559, and its direct target metadherin (MTDH), in psoriasis need to be further illuminated. This study intended to assess miRNA-559 and MTDH levels in skin and sera of psoriatic patients and to investigate their clinical significance in an attempt for developing novel distinct tools for early diagnosis of psoriasis. Moreover, this study aimed at exploring participation of miRNA-559 in regulating MTDH/PTEN/AKT pathway in psoriasis. Expression levels of miRNA-559, AKT, FOXO1 and PTEN were measured by real-time qRT-PCR, whereas MTDH and p27 levels were assessed by ELISA in lesional, non-lesional tissues and serum of 20 psoriatic patients and 20 matching controls. Correlation study was conducted between different parameters. The diagnostic performance of miRNA-559 and MTDH in psoriasis was estimated by receiver operating characteristic (ROC) curve analysis. Expression of miRNA-559 in psoriatic patients was significantly downregulated in both lesional tissues and serum as compared to controls. Conversely, MTDH protein level showed significant increase in both tissues and serum of psoriatic patients and was inversely correlated with miRNA-559 level. Meanwhile, levels of PTEN, AKT and FOXO1 were dramatically changed in psoriatic patients compared to controls. Furthermore, serum miRNA-559 and MTDH displayed comparable diagnostic accuracy in discriminating psoriatic patients from controls. Yet, miRNA-559 demonstrated superior diagnostic performance than MTDH in psoriasis diagnosis. Together, the current findings provide the first suggestion of a new mechanism by which downregulation of miRNA-559 might induce proliferation in psoriasis through modulating PTEN/AKT/FOXO1 pathway by positive regulation of MTDH. Thus, miRNA-559 and MTDH might be proposed as promising diagnostic biomarkers of psoriasis.
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Affiliation(s)
- Rana Aldabbas
- PHD Student at Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Olfat G. Shaker
- Medical Biochemistry and Molecular Biology Department, Faculty of Medicine, Cairo University, Cairo, 11562 Egypt
| | - Manal F. Ismail
- Department of Biochemistry, Faculty of Pharmacy, Cairo University, Kasr El-Aini Street, Cairo, 11562 Egypt
| | - Nevine Fathy
- Department of Biochemistry, Faculty of Pharmacy, Cairo University, Kasr El-Aini Street, Cairo, 11562 Egypt
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3
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Ortiz-Soto G, Babilonia-Díaz NS, Lacourt-Ventura MY, Rivera-Rodríguez DM, Quiñones-Rodríguez JI, Colón-Vargas M, Almodóvar-Rivera I, Ferrer-Torres LE, Suárez-Arroyo IJ, Martínez-Montemayor MM. Metadherin Regulates Inflammatory Breast Cancer Invasion and Metastasis. Int J Mol Sci 2023; 24:4694. [PMID: 36902125 PMCID: PMC10002532 DOI: 10.3390/ijms24054694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 02/25/2023] [Accepted: 02/26/2023] [Indexed: 03/05/2023] Open
Abstract
Inflammatory breast cancer (IBC) is one of the most lethal subtypes of breast cancer (BC), accounting for approximately 1-5% of all cases of BC. Challenges in IBC include accurate and early diagnosis and the development of effective targeted therapies. Our previous studies identified the overexpression of metadherin (MTDH) in the plasma membrane of IBC cells, further confirmed in patient tissues. MTDH has been found to play a role in signaling pathways related to cancer. However, its mechanism of action in the progression of IBC remains unknown. To evaluate the function of MTDH, SUM-149 and SUM-190 IBC cells were edited with CRISPR/Cas9 vectors for in vitro characterization studies and used in mouse IBC xenografts. Our results demonstrate that the absence of MTDH significantly reduces IBC cell migration, proliferation, tumor spheroid formation, and the expression of NF-κB and STAT3 signaling molecules, which are crucial oncogenic pathways in IBC. Furthermore, IBC xenografts showed significant differences in tumor growth patterns, and lung tissue revealed epithelial-like cells in 43% of wild-type (WT) compared to 29% of CRISPR xenografts. Our study emphasizes the role of MTDH as a potential therapeutic target for the progression of IBC.
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Affiliation(s)
- Gabriela Ortiz-Soto
- Department of Biochemistry, Universidad Central del Caribe-School of Medicine, Bayamón, PR 00960, USA
| | - Natalia S. Babilonia-Díaz
- Department of Biochemistry, Universidad Central del Caribe-School of Medicine, Bayamón, PR 00960, USA
| | | | | | - Jailenne I. Quiñones-Rodríguez
- Department of Clinical Anatomy, College of Osteopathic Medicine, Sam Houston State University, Conroe, TX 77304, USA
- Department of Anatomy and Cell Biology, School of Medicine, Universidad Central del Caribe, Bayamón, PR 00960, USA
| | - Mónica Colón-Vargas
- Department of Mathematical Sciences, University of Puerto Rico at Mayagüez, Mayagüez, PR 00681, USA
| | - Israel Almodóvar-Rivera
- Department of Mathematical Sciences, University of Puerto Rico at Mayagüez, Mayagüez, PR 00681, USA
| | - Luis E. Ferrer-Torres
- Department of Pathology and Laboratory Medicine, Hospital Interamericano de Medicina Avanzada (H.I.M.A.)—San Pablo Caguas, Caguas, PR 00725, USA
- Department of Immunopathology, Hato Rey Pathology Associates Inc. (HRPLABS), San Juan, PR 00936, USA
| | - Ivette J. Suárez-Arroyo
- Department of Biochemistry, Universidad Central del Caribe-School of Medicine, Bayamón, PR 00960, USA
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4
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Jin C, Han-Hua D, Qiu-Meng L, Deng N, Peng-Chen D, Jie M, Lei X, Xue-Wu Z, Hui-Fang L, Yan C, Xiao-Ping C, Bi-Xiang Z. MTDH-stabilized DDX17 promotes tumor initiation and progression through interacting with YB1 to induce EGFR transcription in Hepatocellular Carcinoma. Oncogene 2023; 42:169-183. [PMID: 36385375 DOI: 10.1038/s41388-022-02545-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 11/01/2022] [Accepted: 11/07/2022] [Indexed: 11/18/2022]
Abstract
Metadherin (MTDH) is a well-established oncogene in various cancers including Hepatocellular Carcinoma (HCC). However, the precise mechanism through which MTDH promotes cancer-related signaling pathways in HCC remains unknown. In this study, we identified DDX17 as a novel binding partner of MTDH. Furthermore, MTDH increased the protein level of DDX17 by inhibiting its ubiquitination. We confirmed that DDX17 was a novel oncogene, with dramatically upregulated expression in HCC tissues. The increased expression of DDX17 was closely associated with vascular invasion, TNM stage, BCLC stage, and poor prognosis. In vitro and in vivo tests demonstrated that DDX17, a downstream target of MTDH, played a crucial role in tumor initiation and progression. Mechanistically, DDX17 acted as a transcriptional regulator that interacted with Y-box binding protein 1 (YB1) in the nucleus, which in turn drove the binding of YB1 to its target epidermal growth factor receptor (EGFR) gene promoter to increase its transcription. This in turn increased expression of EGFR and the activation of the downstream MEK/pERK signaling pathway. Our results identify DDX17, stabilized by MTDH, as a powerful oncogene in HCC and suggest that the DDX17/YB1/EGFR axis contributes to tumorigenesis and metastasis of HCC.
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Affiliation(s)
- Chen Jin
- Hepatic Surgery Center, Clinical Medicine Research Center for Hepatic Surgery of Hubei Province, Hubei key laboratory of hepato-pancreato-biliary diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Dong Han-Hua
- Hepatic Surgery Center, Clinical Medicine Research Center for Hepatic Surgery of Hubei Province, Hubei key laboratory of hepato-pancreato-biliary diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Liu Qiu-Meng
- Hepatic Surgery Center, Clinical Medicine Research Center for Hepatic Surgery of Hubei Province, Hubei key laboratory of hepato-pancreato-biliary diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ning Deng
- Hepatic Surgery Center, Clinical Medicine Research Center for Hepatic Surgery of Hubei Province, Hubei key laboratory of hepato-pancreato-biliary diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Du Peng-Chen
- Hepatic Surgery Center, Clinical Medicine Research Center for Hepatic Surgery of Hubei Province, Hubei key laboratory of hepato-pancreato-biliary diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Mo Jie
- Hepatic Surgery Center, Clinical Medicine Research Center for Hepatic Surgery of Hubei Province, Hubei key laboratory of hepato-pancreato-biliary diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xu Lei
- Hepatic Surgery Center, Clinical Medicine Research Center for Hepatic Surgery of Hubei Province, Hubei key laboratory of hepato-pancreato-biliary diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zhang Xue-Wu
- Hepatic Surgery Center, Clinical Medicine Research Center for Hepatic Surgery of Hubei Province, Hubei key laboratory of hepato-pancreato-biliary diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Liang Hui-Fang
- Hepatic Surgery Center, Clinical Medicine Research Center for Hepatic Surgery of Hubei Province, Hubei key laboratory of hepato-pancreato-biliary diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chen Yan
- General Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - Chen Xiao-Ping
- Hepatic Surgery Center, Clinical Medicine Research Center for Hepatic Surgery of Hubei Province, Hubei key laboratory of hepato-pancreato-biliary diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China. .,Key Laboratory of Organ Transplantation, Ministry of Education; Key Laboratory of Organ Transplantation, National Health Commission; Key Laboratory of Organ Transplantation, Chinese Academy of Medical Sciences, Wuhan, China.
| | - Zhang Bi-Xiang
- Hepatic Surgery Center, Clinical Medicine Research Center for Hepatic Surgery of Hubei Province, Hubei key laboratory of hepato-pancreato-biliary diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China. .,Key Laboratory of Organ Transplantation, Ministry of Education; Key Laboratory of Organ Transplantation, National Health Commission; Key Laboratory of Organ Transplantation, Chinese Academy of Medical Sciences, Wuhan, China.
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5
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Chen Y, Huang S, Guo R, Chen D. Metadherin-mediated mechanisms in human malignancies. Biomark Med 2021; 15:1769-1783. [PMID: 34783585 DOI: 10.2217/bmm-2021-0298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Metadherin (MTDH) has been recognized as a novel protein that is critical for the progression of multiple types of human malignancies. Studies have reported that MTDH enhances the metastatic potential of cancer cells by regulating multiple signaling pathways. miRNAs and various tumor-related proteins have been shown to interact with MTDH, making it a potential therapeutic target as well as a biomarker in human malignancies. MTDH plays a critical role in inflammation, angiogenesis, hypoxia, epithelial-mesenchymal transition and autophagy. In this review, we present the function and mechanisms of MTDH for cancer initiation and progression.
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Affiliation(s)
- Yuyuan Chen
- The Second Department of Breast Surgery, The Third Affiliated Hospital of Kunming Medical University, Yunnan Cancer Hospital, Kunming, 650000, PR China
| | - Sheng Huang
- The Second Department of Breast Surgery, The Third Affiliated Hospital of Kunming Medical University, Yunnan Cancer Hospital, Kunming, 650000, PR China
| | - Rong Guo
- The Second Department of Breast Surgery, The Third Affiliated Hospital of Kunming Medical University, Yunnan Cancer Hospital, Kunming, 650000, PR China
| | - Dedian Chen
- The Second Department of Breast Surgery, The Third Affiliated Hospital of Kunming Medical University, Yunnan Cancer Hospital, Kunming, 650000, PR China
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6
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Alizadeh-Fanalou S, Khosravi M, Alian F, Rokhsartalb-Azar S, Nazarizadeh A, Karimi-Dehkordi M, Mohammadi F. Dual role of microRNA-1297 in the suppression and progression of human malignancies. Biomed Pharmacother 2021; 141:111863. [PMID: 34243098 DOI: 10.1016/j.biopha.2021.111863] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 06/21/2021] [Accepted: 06/28/2021] [Indexed: 02/07/2023] Open
Abstract
MicroRNAs (miRNAs) are endogenous, non-coding, single-stranded and tiny RNAs that modulate several biological functions, more importantly, the pathophysiology of numerous human cancers. They are bound with target mRNAs and thereby regulate gene expression at post-transcriptional levels. MiRNAs can either trigger cancer progression as an oncogene or alleviate it as a tumor suppressor. Abnormal expression of microRNA-1297 (miR-1297) has been noticed in several human cancers suggesting a distinct role for the miRNA in tumorigenesis. More specifically, it is both up-regulated and down-regulated in various cancers suggesting that it can act as both tumor suppressor and oncogene. This review systematically highlights the different roles of miR-1297 in the pathophysiology of human cancers, explains the mechanisms underlying miR-1297-mediated tumorigenesis, and discusses its potential prognostic, diagnostic, and therapeutic importance.
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Affiliation(s)
- Shahin Alizadeh-Fanalou
- Department of Biochemistry, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Mohsen Khosravi
- Department of Biochemistry, Faculty of Medicine, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Fatemeh Alian
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran
| | - Shirin Rokhsartalb-Azar
- Department of Clinical Biochemistry, Faculty of Medical Sciences, Tarbiat Modares University (TMU), Tehran, Iran
| | - Ali Nazarizadeh
- Department of Biochemistry, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Maryam Karimi-Dehkordi
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Shahrekord Branch, Islamic Azad University, Shahrekord, Iran.
| | - Forogh Mohammadi
- Department of Veterinary, Agriculture Faculty, Kermanshah branch, Islamic Azad University, Kermanshah, Iran.
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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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Manna D, Sarkar D. Multifunctional Role of Astrocyte Elevated Gene-1 (AEG-1) in Cancer: Focus on Drug Resistance. Cancers (Basel) 2021; 13:cancers13081792. [PMID: 33918653 PMCID: PMC8069505 DOI: 10.3390/cancers13081792] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Revised: 03/31/2021] [Accepted: 04/04/2021] [Indexed: 12/15/2022] Open
Abstract
Simple Summary Chemotherapy is a major mode of treatment for cancers. However, cancer cells adapt to survive in stressful conditions and in many cases, they are inherently resistant to chemotherapy. Additionally, after initial response to chemotherapy, the surviving cancer cells acquire new alterations making them chemoresistant. Genes that help adapt the cancer cells to cope with stress often contribute to chemoresistance and one such gene is Astrocyte elevated gene-1 (AEG-1). AEG-1 levels are increased in all cancers studied to date and AEG-1 contributes to the development of highly aggressive, metastatic cancers. In this review, we provide a comprehensive description of the mechanism by which AEG-1 augments tumor development with special focus on its ability to regulate chemoresistance. We also discuss potential ways to inhibit AEG-1 to overcome chemoresistance. Abstract Cancer development results from the acquisition of numerous genetic and epigenetic alterations in cancer cells themselves, as well as continuous changes in their microenvironment. The plasticity of cancer cells allows them to continuously adapt to selective pressures brought forth by exogenous environmental stresses, the internal milieu of the tumor and cancer treatment itself. Resistance to treatment, either inherent or acquired after the commencement of treatment, is a major obstacle an oncologist confronts in an endeavor to efficiently manage the disease. Resistance to chemotherapy, chemoresistance, is an important hallmark of aggressive cancers, and driver oncogene-induced signaling pathways and molecular abnormalities create the platform for chemoresistance. The oncogene Astrocyte elevated gene-1/Metadherin (AEG-1/MTDH) is overexpressed in a diverse array of cancers, and its overexpression promotes all the hallmarks of cancer, such as proliferation, invasion, metastasis, angiogenesis and chemoresistance. The present review provides a comprehensive description of the molecular mechanism by which AEG-1 promotes tumorigenesis, with a special emphasis on its ability to regulate chemoresistance.
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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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Li Y, Xu C, He C, Pu H, Liu J, Wang Y. circMTDH.4/miR‐630/AEG‐1 axis participates in the regulation of proliferation, migration, invasion, chemoresistance, and radioresistance of NSCLC. Mol Carcinog 2019; 59:141-153. [PMID: 31749230 DOI: 10.1002/mc.23135] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 10/31/2019] [Accepted: 11/05/2019] [Indexed: 12/15/2022]
Affiliation(s)
- Ying‐Hong Li
- Department of Internal MedicineThe Affiliated Tumor Hospital of Harbin Medical University Harbin China
| | - Chun‐Lin Xu
- Department of InfectionThe Second Affiliated Hospital Harbin Medical University Harbin China
| | - Chang‐Jun He
- Department of Thoracic SurgeryThe Affiliated Tumor Hospital of Harbin Medical University Harbin China
| | - Hai‐Hong Pu
- Department of Internal MedicineThe Affiliated Tumor Hospital of Harbin Medical University Harbin China
| | - Jing‐Lei Liu
- Department of Internal MedicineThe Affiliated Tumor Hospital of Harbin Medical University Harbin China
| | - Yan Wang
- Department of Internal MedicineThe Affiliated Tumor Hospital of Harbin Medical University Harbin China
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11
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The Oncogene Metadherin Interacts with the Known Splicing Proteins YTHDC1, Sam68 and T-STAR and Plays a Novel Role in Alternative mRNA Splicing. Cancers (Basel) 2019; 11:cancers11091233. [PMID: 31450747 PMCID: PMC6770463 DOI: 10.3390/cancers11091233] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 08/13/2019] [Accepted: 08/21/2019] [Indexed: 11/16/2022] Open
Abstract
Oncogenic metadherin is a key contributor to tumourigenesis with metadherin expression and cytoplasmic localisation previously linked to poor survival. A number of reports have shown metadherin localises specifically to nuclear speckles known to be rich in RNA-binding proteins including the splicing proteins YTHDC1, Sam68 and T-STAR, that have been shown to select alternative splice sites in mRNA of tumour-associated proteins including BRCA, MDM2 and VEGF. Here we investigate the interaction and relationship between metadherin and the splice factors YTHDC1, T-STAR and Sam68. Using a yeast two-hybrid assay and immunoprecipitation we show that metadherin interacts with YTHDC1, Sam68 and T-STAR and demonstrate that T-STAR is significantly overexpressed in prostate cancer tissue compared to benign prostate tissue. We also demonstrate that metadherin influences splice site selection in a dose-dependent manner in CD44v5-luc minigene reporter assays. Finally, we demonstrate that prostate cancer patients with higher metadherin expression have greater expression of the CD44v5 exon. CD44v5 expression could be used to discriminate patients with poor outcomes following radical prostatectomy. In this work we show for the first time that metadherin interacts with, and modulates, the function of key components of splicing associated with cancer development and progression.
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Li T, Li Y, Sun H. MicroRNA-876 is sponged by long noncoding RNA LINC00707 and directly targets metadherin to inhibit breast cancer malignancy. Cancer Manag Res 2019; 11:5255-5269. [PMID: 31239777 PMCID: PMC6559252 DOI: 10.2147/cmar.s210845] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Accepted: 05/06/2019] [Indexed: 12/13/2022] Open
Abstract
Background: MicroRNA-876-5p (miR-876) dysregulation contributes to the aggressiveness of various types of human cancer. This study was aimed at measuring miR-876 expression in breast cancer, determining the specific roles of miR-876 in the progression of breast cancer and understanding the corresponding molecular mechanisms. Materials and methods: miR-876 expression in breast cancer tissues and cell lines was quantified via RT-qPCR. The effect of miR-876 upregulation on the malignant phenotype of breast cancer cells was investigated using CCK-8 assays, flow cytometry, Transwell migration and invasion assays and tumor xenograft experiments. The mechanisms underlying the tumor-suppressive action of miR-876 in breast cancer cells were explored using bioinformatic analysis, luciferase reporter assays, RT-qPCR and Western blot analysis. Results: miR-876 was found to be underexpressed in breast cancer tissues and cell lines. Decreased miR-876 expression notably correlated with lymphatic invasion metastasis, TNM stage and differentiation grade. Overall survival was lower among patients with breast cancer and low miR-876 expression than in patients with high miR-876 expression. Restoration of miR-876 expression decreased breast cancer cell proliferation, migration and invasion in vitro and restricted tumor growth in vivo as well as increased cell apoptosis. Metadherin (MTDH) was identified as a novel target of miR-876 in breast cancer cells. Furthermore, long intergenic nonprotein-coding RNA 707 (LINC00707) acted as a molecular sponge for miR-876, thereby regulating MTDH expression in breast cancer. Finally, silencing miR-876 expression attenuated the influence of a LINC00707 knockdown on the malignancy of breast cancer cells. Conclusion: This study, thus, revealed the vital functions of the LINC00707–miR-876–MTDH pathway in breast cancer and provided attractive targets and markers for its treatment.
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Affiliation(s)
- Tong Li
- Department of General Surgery, The Fourth People's Hospital of Jinan, Jinan, Shandong 250031, People's Republic of China
| | - Yunpeng Li
- Department of General Surgery, Ningjin County People's Hospital, Ningjin, Shandong 253400, People's Republic of China
| | - Hongyan Sun
- Department of General Surgery, The Fourth People's Hospital of Jinan, Jinan, Shandong 250031, People's Republic of China
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Bai H, Chang Y, Li B, Mao Y, Jonas JB. Effects of lentivirus-mediated astrocyte elevated gene-1 overexpression on proliferation and apoptosis of human retinoblastoma cells. Acta Ophthalmol 2019; 97:e397-e402. [PMID: 30694025 DOI: 10.1111/aos.14034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Accepted: 12/16/2018] [Indexed: 12/16/2022]
Abstract
PURPOSE To investigate the effect of astrocyte elevated gene-1 (AEG-1) overexpression on the biological behaviour of human retinoblastoma (RB) cells and its possible mechanism. METHODS Three human RB cell lines (SO-RB50, Y79 and WERI-RB1) were infected with AEG-1-GFP recombinant lentiviral vectors to induce AEG-1 overexpression, while the cells infected with negative lentiviral vectors and cells without any intervention formed control groups. RESULTS All three RB cell lines showed an overexpression of AEG-1 after lentivirus infection (p < 0.001 for all three cell lines). The survival rate of RB cells increased (all p < 0.001) in the AEG-1 overexpressed groups when compared with the control groups. There was a decrease in G0/G1 cell cycle phase arrest and an accumulation in G2/M cell cycle phase in all three RB cell lines (p < 0.001), with an induction in the S phase in WERI-RB1 cells. It was paralleled by a downregulation of p21 and p27 proteins and an upregulation of the Cdc2 protein. The apoptosis rate of RB cells declined (p < 0.001) when AEG-1 was overexpressed, in association with an upregulation of Bcl-2 protein and a downregulation of Bax protein and cleaved caspase-3 proteins. CONCLUSIONS A lentivirus-mediated AEG-1 overexpression in RB cells led in vitro to a growth promotion and an apoptosis inhibition of human RB cells, associated with an upregulation of the Bcl-2 protein, a downregulation of the Bax protein and of cleaved caspase-3 proteins, and with alterations of the cell cycle. AEG-1 may be involved in the development and progression of RB.
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Affiliation(s)
- Haixia Bai
- Beijing Institute of Ophthalmology; Beijing Tongren Eye Center; Beijing Ophthalmology & Visual Sciences Key Laboratory; Beijing Tongren Hospital; Capital Medical University; Beijing China
| | - Ying Chang
- Beijing Institute of Ophthalmology; Beijing Tongren Eye Center; Beijing Ophthalmology & Visual Sciences Key Laboratory; Beijing Tongren Hospital; Capital Medical University; Beijing China
- Department of Ophthalmology; Shanxi Eye Hospital; Taiyuan Shanxi China
| | - Bin Li
- Beijing Institute of Ophthalmology; Beijing Tongren Eye Center; Beijing Ophthalmology & Visual Sciences Key Laboratory; Beijing Tongren Hospital; Capital Medical University; Beijing China
| | - Ying Mao
- Beijing Institute of Ophthalmology; Beijing Tongren Eye Center; Beijing Ophthalmology & Visual Sciences Key Laboratory; Beijing Tongren Hospital; Capital Medical University; Beijing China
| | - Jost B. Jonas
- Department of Ophthalmology; Medical Faculty Mannheim; Heidelberg University; Mannheim Germany
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Wu Z, Qiu M, Mi Z, Meng M, Guo Y, Jiang X, Fang J, Wang H, Zhao J, Liu Z, Qian D, Yuan Z. WT1-interacting protein inhibits cell proliferation and tumorigenicity in non-small-cell lung cancer via the AKT/FOXO1 axis. Mol Oncol 2019; 13:1059-1074. [PMID: 30690883 PMCID: PMC6487700 DOI: 10.1002/1878-0261.12462] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 01/07/2019] [Accepted: 01/10/2019] [Indexed: 01/22/2023] Open
Abstract
Lung cancer is the most common cancer and the leading cause of cancer‐related death worldwide; hence, it is imperative that the mechanisms underlying the malignant properties of lung cancer be uncovered in order to efficiently treat this disease. Increasing evidence has shown that WT1‐interacting protein (WTIP) plays important roles both physiologically and pathologically in humans; however, the role of WTIP in cancer is unknown. Here, we investigated the role and mechanism of WTIP in cell proliferation and tumorigenesis of non‐small‐cell lung cancer (NSCLC). We report that WTIP is a tumor suppressor in human NSCLC. We found that WTIP expression was significantly reduced in both NSCLC cell lines and clinical specimens compared to that in normal controls; this reduction was largely attributed to promoter hypermethylation. Downregulation of WTIP significantly correlates with poor prognosis and predicts a shorter overall survival and progression‐free survival among NSCLC patients. Moreover, ectopic overexpression of WTIP dramatically inhibits cell proliferation and tumorigenesis in vitro and in vivo; conversely, depletion of WTIP expression shows the opposite effects. Mechanistically, WTIP impairs AKT phosphorylation and activation, leading to enhanced expression and transcriptional activity of FOXO1, which further increases p21Cip1 and p27Kip1, and decreases cyclin D1, which consequently results in cell cycle arrest. Collectively, the results of the current study indicate that WTIP is an important proliferation‐related gene and that WTIP expression may represent a novel prognostic biomarker for NSCLC.
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Affiliation(s)
- Zhiqiang Wu
- Department of Radiation Oncology, Key Laboratory of Cancer Prevention and Therapy, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute & Hospital, China
| | - Minghan Qiu
- Department of Radiation Oncology, Key Laboratory of Cancer Prevention and Therapy, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute & Hospital, China.,Department of Oncology, Tianjin Union Medical Center, China
| | - Zeyun Mi
- Department of Biochemistry and Molecular Biology, College of Basic Medical Science, Tianjin Medical University, China
| | - Maobin Meng
- Department of Radiation Oncology, Key Laboratory of Cancer Prevention and Therapy, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute & Hospital, China
| | - Yu Guo
- Department of General Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Xiangli Jiang
- Department of Thoracic Medical Oncology, Tianjin Medical University Cancer Institute & Hospital, China
| | | | - Hui Wang
- Department of Radiation Oncology, Key Laboratory of Cancer Prevention and Therapy, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute & Hospital, China
| | - Jinlin Zhao
- Department of Radiation Oncology, Key Laboratory of Cancer Prevention and Therapy, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute & Hospital, China
| | - Zhuang Liu
- Department of Radiation Oncology, Key Laboratory of Cancer Prevention and Therapy, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute & Hospital, China
| | - Dong Qian
- Department of Radiation Oncology, Key Laboratory of Cancer Prevention and Therapy, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute & Hospital, China
| | - Zhiyong Yuan
- Department of Radiation Oncology, Key Laboratory of Cancer Prevention and Therapy, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute & Hospital, China
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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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Ge X, Sui X, Fang X, Jiang Y, Ding M, Liu X, Wang X. A Preliminary Study on Metadherin as a Potential Marker for Progression of Diffuse Large B Cell Lymphoma. Genet Test Mol Biomarkers 2018; 22:481-486. [PMID: 30117777 DOI: 10.1089/gtmb.2018.0071] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
AIMS To determine if Metadherin (MTDH) expression levels are positively correlated with the clinical stage of diffuse large B-cell lymphoma (DLBCL) based on MTDH being highly expressed in other type of tumors including melanoma, malignant glioma, breast cancer, and hepatocellular carcinoma. In this study, we investigated the pathologic significance of MTDH and its potential in predicting DLBCL outcomes. MATERIALS AND METHODS Tissue samples from 50 patients with DLBCL and 22 patients with lymph node reactive hyperplasia were collected and evaluated using immunohistochemical staining, microscopy, and western blotting. The Kaplan-Meier method and Cox regression model were used for survival analysis of patients. RESULTS Our results show that the overexpression of the MTDH protein in tissues was observed in 66% of patients with DLBCL, whereas it was not overexpressed in the patients with reactive hyperplastic lymph nodes. While there was no correlation between MTDH overexpression with age, sex, presence of B symptoms, and lactate dehydrogenase (LDH) levels in patients with DLBCL, this parameter was positively correlated with clinical stages. Moreover, MTDH-negative patients had significantly better prognoses compared with the MTDH-positive patients. CONCLUSION Our preliminary study indicates that MTDH may play an important role in the development of DLBCL, and that MTDH overexpression is potentially associated with the clinical progression of DLBCL. In addition, high expression levels of MTDH in tissues was correlated with a poorer prognosis for patients with DLBCL. As such, MTDH may be a potential therapeutic target for specific therapy. However, research on a larger group of patients is needed to verify these preliminary results.
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Affiliation(s)
- Xueling Ge
- Department of Hematology, Shandong Provincial Hospital Affiliated to Shandong University , Jinan, Shandong, China
| | - Xiaohui Sui
- Department of Hematology, Shandong Provincial Hospital Affiliated to Shandong University , Jinan, Shandong, China
| | - Xiaosheng Fang
- Department of Hematology, Shandong Provincial Hospital Affiliated to Shandong University , Jinan, Shandong, China
| | - Yujie Jiang
- Department of Hematology, Shandong Provincial Hospital Affiliated to Shandong University , Jinan, Shandong, China
| | - Mei Ding
- Department of Hematology, Shandong Provincial Hospital Affiliated to Shandong University , Jinan, Shandong, China
| | - Xin Liu
- Department of Hematology, Shandong Provincial Hospital Affiliated to Shandong University , Jinan, Shandong, China
| | - Xin Wang
- Department of Hematology, Shandong Provincial Hospital Affiliated to Shandong University , Jinan, Shandong, China
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Yang X, Song S. Silencing of Astrocyte elevated gene-1 (AEG-1) inhibits proliferation, migration, and invasiveness, and promotes apoptosis in pancreatic cancer cells. Biochem Cell Biol 2018; 97:165-175. [PMID: 30359541 DOI: 10.1139/bcb-2018-0181] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
To investigate the role of Astrocyte elevated gene-1 (AEG-1) in the development and progress of pancreatic cancer, short hairpin RNA (shRNA) was inserted into the RNA interference vector to knock-down the endogenous AEG-1 in two pancreatic cancer cell lines: AsPC-1 and PANC-1. Our results showed that silencing of AEG-1 suppressed the proliferation, colony formation ability, and cell stemness of AsPC-1 and PANC-1 cells, and inhibited their G1-to-S phase transition. Results from apoptosis assay showed that knock-down of AEG-1 led to cell apoptosis. The expression of anti-apoptotic Bcl-2 was downregulated and that of the pro-apoptotic Bax and cleaved caspase-3 was upregulated in AEG-1-silenced pancreatic cancer cells. Further, the capability of AEG-1-silenced cells to migrate and to invade through the Matrigel-coated membrane was weaker, and the expression of matrix metallopeptidase 2 (MMP-2) and MMP-9 were decreased. Moreover, the AKT-β-catenin signaling pathway was inhibited in the cells with knock-down of AEG-1. In addition, the growth of xenograft tumors formed by AsPC-1 and PANC-1 cells was suppressed by AEG-1 shRNA. In conclusion, our study demonstrates that pancreatic cancer cells require AEG-1 to maintain their survival and metastasis, suggesting AEG-1 as a potential target for the treatment of pancreatic cancers.
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Affiliation(s)
- Xing Yang
- Department of Pancreatobiliary Surgery, The First Affiliated Hospital of China Medical University, Shenyang 110001, People's Republic of China.,Department of Pancreatobiliary Surgery, The First Affiliated Hospital of China Medical University, Shenyang 110001, People's Republic of China
| | - Shaowei Song
- Department of Pancreatobiliary Surgery, The First Affiliated Hospital of China Medical University, Shenyang 110001, People's Republic of China.,Department of Pancreatobiliary Surgery, The First Affiliated Hospital of China Medical University, Shenyang 110001, People's Republic of China
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Yang L, Tian Y, Leong WS, Song H, Yang W, Wang M, Wang X, Kong J, Shan B, Song Z. Efficient and tumor-specific knockdown of MTDH gene attenuates paclitaxel resistance of breast cancer cells both in vivo and in vitro. Breast Cancer Res 2018; 20:113. [PMID: 30227879 PMCID: PMC6145322 DOI: 10.1186/s13058-018-1042-7] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Accepted: 08/20/2018] [Indexed: 01/12/2023] Open
Abstract
Background Drug resistance of paclitaxel (TAX), the first-line chemotherapy drug for breast cancer, was reported to develop in 90% of patients with breast cancer, especially metastatic breast cancer. Investigating the mechanism of TAX resistance of breast cancer cells and developing the strategy improving its therapeutic efficiency are crucial to breast cancer cure. Methods and Results We here report an elegant nanoparticle (NP)-based technique that realizes efficient breast cancer treatment of TAX. Using lentiviral vector-mediated gene knockdown, we first demonstrated that TAX therapeutic efficiency was closely correlated with metadherin (MTDH) gene expression in breast cancer cell lines. This finding was also supported by efficacy of TAX treatment in breast cancer patients from our clinical studies. Specifically, TAX treatment became more effective when MTDH expression was decreased in MCF-7 cancer cells by the blocking nuclear factor-kappa B (NF-κB) pathway. Based on these findings, we subsequently synthesized a polymeric NP that could co-deliver MTDH-small interfering RNA (MTDH–siRNA) and TAX into the breast cancer tumors in tumor-bearing mice. The NPs were composed of a cationic copolymer, which wrapped TAX in the inside and adsorbed the negatively charged siRNA on their surface with high drug-loading efficiency and good stability. Conclusions NP-based co-delivery approach can effectively knock down the MTDH gene both in vitro and in vivo, which dramatically inhibits breast tumor growth, achieving effective TAX chemotherapy treatment without overt side effects. This study provides a potential therapeutic strategy for the treatment of a wide range of solid tumors highly expressing MTDH. Electronic supplementary material The online version of this article (10.1186/s13058-018-1042-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Liu Yang
- Breast Center, Fourth Hospital of Hebei Medical University, Shijiazhuang, 050035, China
| | - Yanhua Tian
- Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, 100871, China
| | - Wei Sun Leong
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Heng Song
- Laboratory of Experimental Pathology, Hebei Medical University, Shijiazhuang, China
| | - Wei Yang
- Breast Center, Fourth Hospital of Hebei Medical University, Shijiazhuang, 050035, China
| | - Meiqi Wang
- Breast Center, Fourth Hospital of Hebei Medical University, Shijiazhuang, 050035, China
| | - Xinle Wang
- Breast Center, Fourth Hospital of Hebei Medical University, Shijiazhuang, 050035, China
| | - Jing Kong
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Baoen Shan
- Breast Center, Fourth Hospital of Hebei Medical University, Shijiazhuang, 050035, China
| | - Zhengchuan Song
- Breast Center, Fourth Hospital of Hebei Medical University, Shijiazhuang, 050035, China.
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HIV-1 Tat inhibits EAAT-2 through AEG-1 upregulation in models of HIV-associated neurocognitive disorder. Oncotarget 2018; 8:39922-39934. [PMID: 28404980 PMCID: PMC5503662 DOI: 10.18632/oncotarget.16485] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Accepted: 01/23/2017] [Indexed: 11/25/2022] Open
Abstract
During HIV-associated neurocognitive disorder (HAND), decreasing in excitatory amino acid transporter 2 (EAAT-2) in astrocyte plasma membranes leads to elevated levels of extracellular glutamate and, in turn, neuronal apoptosis. We used immunohistochemistry, western blot, qRT-PCR, and RNA interference to elucidate the molecular mechanisms underlying the decreased EAAT-2 expression during HAND at the tissue and cellular levels. We used simian immunodeficiency virus-human immunodeficiency virus chimeric virus (SHIV)-infected macaques as an in vivo model of HAND. Our results show that EAAT-2 expression was decreased in the cerebral cortex, while AEG-1 expression was increased, and the expression levels of these proteins were negatively correlated. In vitro analyses showed that HIV-1 Tat inhibited EAAT-2 expression by inducing overexpression of AEG-1. More specifically, HIV-1 Tat increased AEG-1 expression via the PI3-K signaling pathway, while increasing EAAT-2 inhibition by YinYan-1 (YY-1) via the NF-κB signaling pathway. These results warrant testing AEG-1 as a potential therapeutic target for treating HAND.
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Li W, Yi J, Zheng X, Liu S, Fu W, Ren L, Li L, Hoon DSB, Wang J, Du G. miR-29c plays a suppressive role in breast cancer by targeting the TIMP3/STAT1/FOXO1 pathway. Clin Epigenetics 2018; 10:64. [PMID: 29796115 PMCID: PMC5956756 DOI: 10.1186/s13148-018-0495-y] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Accepted: 05/02/2018] [Indexed: 12/14/2022] Open
Abstract
Background miR-29c has been associated with the progression of many cancers. However, the function and mechanism of miR-29c have not been well investigated in breast cancers. Methods Real-time quantitative PCR was used to assess expression of miR-29c and DNMT3B mRNA. Western blot and immunochemistry were used to examine the expression of DNA methyltransferase 3B (DNMT3B) protein in breast cancer cells and tissues. The functional roles of miR-29c in breast cancer cells such as proliferation, migration, invasion, colony formation, and 3D growth were evaluated using MTT, transwell chambers, soft agar, and 3D Matrigel culture, respectively. In addition, the luciferase reporter assay was used to check if miR-29c binds the 3'UTR of DNMT3B. The effects of miR-29c on the DNMT3B/TIMP3/STAT1/FOXO1 pathway were also examined using Western blot and methyl-specific qPCR. The specific inhibitor of STAT1, fludarabine, was used to further check the mechanism of miR-29c function in breast cancer cells. Studies on cell functions were carried out in DNMT3B siRNA cell lines. Results The expression of miR-29c was decreased with the progression of breast cancers and was closely associated with an overall survival rate of patients. Overexpression of miR-29c inhibited the proliferation, migration, invasion, colony formation, and growth in 3D Matrigel while knockdown of miR-29c promoted these processes in breast cancer cells. In addition, miR-29c was found to bind 3'UTR of DNMT3B and inhibits the expression of DNMT3B, which was elevated in breast cancers. Moreover, the protein level of TIMP3 was reduced whereas methylation of TIMP3 was increased in miR-29c knockdown cells compared to control. On the contrary, the protein level of TIMP3 was increased whereas methylation of TIMP3 was reduced in miR-29c-overexpressing cells compared to control. Knockdown of DNMT3B reduced the proliferation, migration, and invasion of breast cancer cell lines. Finally, our results showed that miR-29c exerted its function in breast cancers by regulating the TIMP3/STAT1/FOXO1 pathway. Conclusion The results suggest that miR-29c plays a significant role in suppressing the progression of breast cancers and that miR-29c may be used as a biomarker of breast cancers.
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Affiliation(s)
- Wan Li
- The State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Beijing, China
- Key Laboratory of Drug Target Research and Drug Screen, Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, 100050 China
| | - Jie Yi
- Department of Clinical Laboratory, Peking Union Medical College Hospital, Beijing, 100730 China
| | - Xiangjin Zheng
- The State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Beijing, China
- Key Laboratory of Drug Target Research and Drug Screen, Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, 100050 China
| | - Shiwei Liu
- Department of Endocrinology, Shanxi DAYI Hospital, Shanxi Medical University, Taiyuan, 030002 Shanxi China
| | - Weiqi Fu
- The State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Beijing, China
- Key Laboratory of Drug Target Research and Drug Screen, Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, 100050 China
| | - Liwen Ren
- The State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Beijing, China
- Key Laboratory of Drug Target Research and Drug Screen, Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, 100050 China
| | - Li Li
- Key Laboratory of Drug Target Research and Drug Screen, Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, 100050 China
| | - Dave S. B. Hoon
- Department of Translational Molecular Medicine, John Wayne Cancer Institute (JWCI) at Providence Saint John’s Health Center, Santa Monica, CA 90404 USA
| | - Jinhua Wang
- The State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Beijing, China
- Key Laboratory of Drug Target Research and Drug Screen, Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, 100050 China
| | - Guanhua Du
- The State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Beijing, China
- Key Laboratory of Drug Target Research and Drug Screen, Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, 100050 China
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AEG-1 Contributes to Metastasis in Hypoxia-Related Ovarian Cancer by Modulating the HIF-1alpha/NF-kappaB/VEGF Pathway. BIOMED RESEARCH INTERNATIONAL 2018; 2018:3145689. [PMID: 29770329 PMCID: PMC5889902 DOI: 10.1155/2018/3145689] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Accepted: 01/11/2018] [Indexed: 11/22/2022]
Abstract
Objective Ovarian carcinoma represents one of the deadliest malignancies among female cancer patients. Astrocyte-elevated gene-1 (AEG-1) participates in the ontogenesis of multiple human malignant diseases. Here we evaluated AEG-1, hypoxia-inducible factor- (HIF-) 1α, nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB), and vascular endothelial growth factor (VEGF) amounts in hypoxia induced ovarian carcinoma cells. This study aimed to explore the mechanism by which AEG-1 regulates metastasis in hypoxia induced ovarian carcinoma. Patients and Methods AEG-1, HIF-1α, and VEGF protein amounts were evaluated by immunohistochemistry in 40 and 170 normal ovary and ovarian cancer tissue specimens, respectively. In addition, AEG-1, HIF-1α, NF-κB, and VEGF mRNA and protein levels were determined by reverse quantified RT-PCR and WB, respectively, at different time periods (0–24 h) in epithelial ovarian cancer (EOC) SKOV3 cells treated in a hypoxia incubator. Furthermore, NF-κB and VEGF gene and protein expression levels in AEG-1 knockdown EOC cells were quantitated by RT-PCR and WB, respectively. Results AEG-1, HIF-1α, and VEGF amounts were significantly elevated in EOC tissue samples compared with normal ovary specimens (p < 0.001). Positive expression of HIF-1α and AEG-1 was associated with higher metastatic rate (p < 0.01), lower FIGO stage (p < 0.001), and degree of differentiation (p < 0.001). Meanwhile, EOC SKOV3 cells grew upon exposure to hypoxia for 8 h (p < 0.001); at this time point, AEG-1, HIF-1α, NF-κB, and VEGF amounts peaked (p < 0.001), at both the gene and the protein levels. After AEG-1 knockdown, HIF-1α, NF-κB, and VEGF amounts were significantly decreased in EOC SKOV3 cells, also under hypoxic conditions (p < 0.01). Conclusions As an independent prognostic factor, AEG-1 was found to be significantly associated with hypoxia in ovarian cancer by regulating the HIF-1alpha/NF-kappaB/VEGF pathway. Therefore, AEG-1 may be useful in determining disease stage and prognosis in ovarian cancer.
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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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23
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Yu J, Wang JG, Zhang L, Yang HP, Wang L, Ding D, Chen Q, Yang WL, Ren KH, Zhou DM, Zou Q, Jin YT, Liu XP. MicroRNA-320a inhibits breast cancer metastasis by targeting metadherin. Oncotarget 2018; 7:38612-38625. [PMID: 27229534 PMCID: PMC5122415 DOI: 10.18632/oncotarget.9572] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2015] [Accepted: 05/01/2016] [Indexed: 01/08/2023] Open
Abstract
Dysregulated microRNAs play important pathological roles in carcinogenesis that are yet to be fully elucidated. This study was performed to investigate the biological functions of microRNA-320a (miR-320a) in breast cancer and the underlying mechanisms. Function analyses for cell proliferation, cell cycle, and cell invasion/migration, were conducted after miR-320a silencing and overexpression. The specific target genes of miR-320a were predicted by TargetScan algorithm and then determined by dual luciferase reporter assay and rescue experiment. The relationship between miR-320a and its target genes was explored in human breast cancer tissues. We found that miR-320a overexpression could inhibit breast cancer invasion and migration abilities in vitro, while miR-320a silencing could enhance that. In addition, miR-320a could suppress activity of 3′-untranslated region luciferase of metadherin (MTDH), a potent oncogene. The rescue experiment revealed that MTDH was a functional target of miR-320a. Moreover, we found that MTDH was negatively correlated with miR-320a expression, and it was related to clinical outcomes of breast cancer. Further xenograft experiment also showed that miR-320a could inhibit breast cancer metastasis in vivo. Our findings clearly demonstrate that miR-320a suppresses breast cancer metastasis by directly inhibiting MTDH expression. The present study provides a new insight into anti-oncogenic roles of miR-320a and suggests that miR-320a/MTDH pathway is a putative therapeutic target in breast cancer.
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Affiliation(s)
- Juan Yu
- Department of Pathology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Ji-Gang Wang
- Department of Pathology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China.,Department of Pathology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Lei Zhang
- Department of Pathology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Hai-Ping Yang
- Department of Pathology, People's Hospital, Linzi District, Zibo 255400, China
| | - Lei Wang
- Department of Pathology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Di Ding
- Department of Pathology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Qi Chen
- Department of Pathology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Wen-Lin Yang
- Department of Pathology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Ke-Han Ren
- Department of Pathology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Dan-Mei Zhou
- Department of Pathology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Qiang Zou
- Department of Breast Surgery, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Yi-Ting Jin
- Department of Breast Surgery, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Xiu-Ping Liu
- Department of Pathology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China.,Department of Pathology, The Fifth People's Hospital, Fudan University, Shanghai 200240, China
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24
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Liang Y, Fu D, Hu G. Metadherin: An emerging key regulator of the malignant progression of multiple cancers. Thorac Cancer 2018; 2:143-148. [PMID: 27755853 DOI: 10.1111/j.1759-7714.2011.00064.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
We and others recently identified the gene metadherin (MTDH) as a functional driver in multiple aspects of cancer progression. It is overexpressed in cancer cells originating from a variety of tissues, partially due to DNA amplification of the chromosomal 8q22 region where this gene resides. The rapidly accumulated data from MTDH studies of the past several years have documented its role in tumorigenesis, angiogenesis, cell proliferation, survival, anchorage-independent growth, metastasis and chemoresistance. In particular, it simultaneously helps the primary tumor cells to survive conventional chemotherapy and spread to distant organs, both of which are major contributors to cancer therapy failure and ultimately patient death. The efforts to elucidate the molecular mechanism of MTDH functions led to observations indicating its involvement in several prominent cancer-related signaling pathways including Ras, c-Myc, PI3K/AKT, NF-κB, Wnt/β-catenin, and more recently, microRNA machinery. Herein we will briefly summarize the studies that establish MTDH as a promising target for cancer therapeutics.
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Affiliation(s)
- Yajun Liang
- The Key Laboratory of Stem Cell Biology, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Da Fu
- The Key Laboratory of Stem Cell Biology, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Guohong Hu
- The Key Laboratory of Stem Cell Biology, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai JiaoTong University School of Medicine, Shanghai, China
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25
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Hou T, Li Z, Zhao Y, Zhu WG. Mechanisms controlling the anti-neoplastic functions of FoxO proteins. Semin Cancer Biol 2017; 50:101-114. [PMID: 29155239 DOI: 10.1016/j.semcancer.2017.11.007] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Revised: 10/18/2017] [Accepted: 11/14/2017] [Indexed: 02/06/2023]
Abstract
The Forkhead box O (FoxO) proteins comprise a family of evolutionarily conserved transcription factors that predominantly function as tumor suppressors. These proteins assume diverse roles in the cellular anti-neoplastic response, including regulation of apoptosis and autophagy, cancer metabolism, cell-cycle arrest, oxidative stress and the DNA damage response. More recently, FoxO proteins have been implicated in cancer immunity and cancer stem-cell (CSC) homeostasis. Interestingly, in some sporadic sub-populations, FoxO protein function may also be manipulated by factors such as β-catenin whereby they instead can facilitate cancer progression via maintenance of CSC properties or promoting drug resistance or metastasis and invasion. This review highlights the essential biological functions of FoxOs and explores the areas that may be exploited in FoxO protein signaling pathways in the development of novel cancer therapeutic agents.
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Affiliation(s)
- Tianyun Hou
- Guangdong Key Laboratory of Genome Stability and Human Disease Prevention, Department of Biochemistry and Molecular Biology, School of Medicine, Shenzhen University, Shenzhen 518060, China; Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Beijing Key Laboratory of Protein Posttranslational Modifications and Cell Function, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - Zhiming Li
- Guangdong Key Laboratory of Genome Stability and Human Disease Prevention, Department of Biochemistry and Molecular Biology, School of Medicine, Shenzhen University, Shenzhen 518060, China; Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Beijing Key Laboratory of Protein Posttranslational Modifications and Cell Function, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - Ying Zhao
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Beijing Key Laboratory of Protein Posttranslational Modifications and Cell Function, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - Wei-Guo Zhu
- Guangdong Key Laboratory of Genome Stability and Human Disease Prevention, Department of Biochemistry and Molecular Biology, School of Medicine, Shenzhen University, Shenzhen 518060, China; Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Beijing Key Laboratory of Protein Posttranslational Modifications and Cell Function, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China.
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26
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Astrocyte elevated gene-1 promotes tumour growth and invasion by inducing EMT in oral squamous cell carcinoma. Sci Rep 2017; 7:15447. [PMID: 29133850 PMCID: PMC5684276 DOI: 10.1038/s41598-017-15805-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Accepted: 11/02/2017] [Indexed: 12/19/2022] Open
Abstract
Oral squamous cell carcinoma (OSCC) is a common human malignancy with a high incidence rate and poor prognosis. Although astrocyte elevated gene 1 (AEG-1) expression is up-regulated in various human cancers and plays an important role in carcinogenesis and tumour progression, the impact of AEG-1 on the development and progression of OSCC remains unclear. Accordingly, this study aims to clarify the biological significance of AEG-1 in OSCC. We found AEG-1 to be overexpressed in OSCC tissues compared to normal oral mucosa. Knockdown or overexpression of AEG-1 in OSCC cell lines showed that AEG-1 is important for tumour growth, apoptosis, drug tolerance, and maintaining epithelial-mesenchymal transition (EMT)-mediated cell migration and invasion in vitro. Moreover, in a xenograft-mouse model generated by AEG-1-overexpressing SCC15 cells, we found that higher expression of AEG-1 promoted tumour growth, angiogenesis, and EMT in vivo. These findings provide mechanistic insight into the role of AEG-1 in regulating OSCC tumour growth, apoptosis, drug tolerance, and invasion, as well as AEG-1-induced activation of p38 and NF-κB signalling, suggesting that AEG-1 is an important prognostic factor and therapeutic target for OSCC.
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27
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Pei YY, Li GC, Ran J, Wei FX. Kinesin family member 11 contributes to the progression and prognosis of human breast cancer. Oncol Lett 2017; 14:6618-6626. [PMID: 29181100 PMCID: PMC5696720 DOI: 10.3892/ol.2017.7053] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2015] [Accepted: 06/02/2017] [Indexed: 01/24/2023] Open
Abstract
The present study aimed to clarify the association between kinesin family member 11 (KIF11) and human breast cancer, and the effect of KIF11 on breast cancer cell progression. Western blot analysis, reverse transcription-quantitative polymerase chain reaction (RT-qPCR) analysis, retroviral infection, immunohistochemistry staining, MTT assay, anchorage-independent growth ability assay and tumorigenicity assay were all used in the present study. Western blot and RT-qPCR analysis revealed that the expression of KIF11 was markedly increased in malignant cells compared with that in non-tumorous cells at the mRNA and protein level. Immunohistochemical analysis revealed that KIF11 expression was upregulated in 256/268 (95.8%) paraffin-embedded archival breast cancer biopsies. Statistical analysis demonstrated a significant association between the upregulation of KIF11 expression and the progression of breast cancer. Multivariate analysis revealed that KIF11 upregulation represents an independent prognostic indicator for the survival of patients with breast cancer. Tumorigenicity experiments were further used to evaluate the effect of KIF11 in non-obese diabetic/severe combined immunodeficient mice. Silencing endogenous KIF11 by short hairpin RNAs inhibited the proliferation of breast cancer cells in vitro and in vivo. The present results suggest that KIF11 may serve an important function in the proliferation of breast cancer and may represent a novel and useful prognostic marker for breast cancer.
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Affiliation(s)
- Yuan-Yuan Pei
- Shenzhen Longgang Maternal and Child Health Hospital Centralab, Shenzhen, Guangdong 518172, P.R. China
| | - Gao-Chi Li
- Shenzhen Longgang Maternal and Child Health Hospital Centralab, Shenzhen, Guangdong 518172, P.R. China
| | - Jian Ran
- Shenzhen Longgang Maternal and Child Health Hospital Centralab, Shenzhen, Guangdong 518172, P.R. China
| | - Feng-Xiang Wei
- Shenzhen Longgang Maternal and Child Health Hospital Centralab, Shenzhen, Guangdong 518172, P.R. China
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28
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Wang Z, He S, Guo P, Guo X, Zheng J. MicroRNA-1297 inhibits metastasis and epithelial-mesenchymal transition by targeting AEG-1 in cervical cancer. Oncol Rep 2017; 38:3121-3129. [DOI: 10.3892/or.2017.5979] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Accepted: 08/17/2017] [Indexed: 11/05/2022] Open
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29
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Liu DZ, Chang B, Li XD, Zhang QH, Zou YH. MicroRNA-9 promotes the proliferation, migration, and invasion of breast cancer cells via down-regulating FOXO1. Clin Transl Oncol 2017; 19:1133-1140. [PMID: 28397066 DOI: 10.1007/s12094-017-1650-1] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2016] [Accepted: 03/13/2017] [Indexed: 02/05/2023]
Abstract
PURPOSE The objective of the study was to investigate the role of microRNA-9 (miR-9) targeting forkhead box O1 (FOXO1) in the proliferation, migration, and invasion of breast cancer cells. METHODS Quantitative real-time polymerase chain reaction (qRT-PCR) was employed to determine the expressions of miR-9 and FOXO1 mRNA in breast cancer tissues, normal breast tissues, breast cancer cell lines, and normal breast epithelial cells. After the up-regulation of miR-9 expression, qRT-PCR and Western blotting were used to determine the expression of FOXO1. The luciferase reporter gene assay was used to validate the target gene. The CCK-8 assay, scratch-wound healing assay, and Transwell invasion assay were used to investigate the changes in the proliferation, migration, and invasion of breast cancer cells, respectively. RESULTS MicroRNA-9 expression was significantly up-regulated in breast cancer tissues and breast cancer cell lines when compared with normal breast tissues and normal breast epithelial cells (both P < 0.05). FOXO1 mRNA and protein expressions were substantially down-regulated in breast cancer tissues and breast cancer cell lines when compared with normal breast tissues and normal breast epithelial cells (both P < 0.05). There can be a negative correlation between miR-9 and FOXO1 mRNA in breast cancer. Luciferase reporter gene assay indicated that miR-9 can down-regulate FOXO1 expression at a post-transcriptional level through binding specifically to FOXO1 3'UTR. The results of CCK-8 assay, scratch-wound healing assay, and Transwell invasion assay revealed that the inhibition of miR-9 can suppress MCF7 cell proliferation, migration, and invasion. Additionally, the expression of miR-9 increased significantly whilst that of FOXO1 decreased substantially as the disease progressed (P < 0.05). CONCLUSIONS Our study provides evidence that miR-9 can promote the proliferation, migration, and invasion of breast cancer cells via down-regulating FOXO1.
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Affiliation(s)
- D-Z Liu
- Department of Emmengey, The First Affiliated Hospital of Shantou University Medical College, Shantou, 515041, People's Republic of China
| | - B Chang
- Department of Emmengey, The First Affiliated Hospital of Shantou University Medical College, Shantou, 515041, People's Republic of China
| | - X-D Li
- Department of Orthopedics, The First Affiliated Hospital of Shantou University Medical College, Shantou, 515041, People's Republic of China
| | - Q-H Zhang
- Department of Orthopedics, The First Affiliated Hospital of Shantou University Medical College, Shantou, 515041, People's Republic of China
| | - Y-H Zou
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Shantou University Medical College, No. 57, Changping Road, Shantou, 515041, Guangdong, People's Republic of China.
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30
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Suzuki K, Takano S, Yoshitomi H, Nishino H, Kagawa S, Shimizu H, Furukawa K, Miyazaki M, Ohtsuka M. Metadherin promotes metastasis by supporting putative cancer stem cell properties and epithelial plasticity in pancreatic cancer. Oncotarget 2017; 8:66098-66111. [PMID: 29029495 PMCID: PMC5630395 DOI: 10.18632/oncotarget.19802] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Accepted: 07/12/2017] [Indexed: 12/31/2022] Open
Abstract
Pancreatic ductal adenocarcinoma (PDAC) has a high metastatic potential. However, the mechanism of metastatic colonization in PDAC remains poorly understood. Metadherin (MTDH) has emerged in recent years as a crucial mediator of metastasis in several cancer types, although the biological role of MTDH in PDAC has not been investigated. Here, we demonstrated the functional roles of MTDH in PDAC progression, especially focusing on the metastatic cascade. In vitro studies showed that MTDH provides cancer stem cell (CSC) properties in metastatic PDAC cells and contributes to anoikis resistance with epithelial characteristics in PDAC cells. We also performed in vivo studies using both orthotopic transplantation and intra-portal vein injection as experimental models of liver metastasis to examine the function of MTDH at the metastatic site. MTDH knockdown dramatically reduced the incidence of liver metastases along with epithelial features in both experimental mouse models. Collectively, MTDH facilitates metastatic colonization with putative CSC and epithelial properties in PDAC cells. PDAC cells were transiently treated with TGF-β1 to investigate the roles of MTDH on epithelial plasticity. Intriguingly, MTDH expression was negatively correlated with Twist1 expression during the Mesenchymal-Epithelial transition (MET) induction in metastatic PDAC cells. These results suggest that MTDH may contribute to MET induction via downregulation of Twsit1. Lastly, immunohistochemistry indicated that MTDH overexpression is closely associated with hematogenous metastasis and predicts poor prognosis in patients with PDAC. This is the first demonstration of MTDH function in PDAC metastatic colonization. Our data suggest that MTDH targeting therapy could be applied to control PDAC metastasis.
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Affiliation(s)
- Kensuke Suzuki
- Department of General Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Shigetsugu Takano
- Department of General Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Hideyuki Yoshitomi
- Department of General Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Hitoe Nishino
- Department of General Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Shingo Kagawa
- Department of General Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Hiroaki Shimizu
- Department of General Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Katsunori Furukawa
- Department of General Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Masaru Miyazaki
- Department of General Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Masayuki Ohtsuka
- Department of General Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
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31
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Wu S, Yang L, Wu D, Gao Z, Li P, Huang W, Wang X. AEG-1 induces gastric cancer metastasis by upregulation of eIF4E expression. J Cell Mol Med 2017; 21:3481-3493. [PMID: 28661037 PMCID: PMC5706588 DOI: 10.1111/jcmm.13258] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Accepted: 04/26/2017] [Indexed: 12/19/2022] Open
Abstract
Gastric cancer is the third leading cause of cancer-related deaths worldwide, and patients with lymph node, peritoneal and distant metastasis have a poor prognosis. Overexpression of Astrocyte-elevated gene-1 (AEG-1) has been reported to be correlated with the progression and metastasis of gastric cancer. However, its mechanisms are quite unclear. In this study, we found that elevated expression of AEG-1 was correlated with metastasis in human gastric cancer tissues. Moreover, gain- or loss-of-function of AEG-1, respectively, promoted or suppressed epithelial-mesenchymal transition (EMT), migration and invasion of gastric cancer cells. AEG-1 positively regulated eIF4E, MMP-9 and Twist expression. Manipulating eIF4E expression by transfection of overexpression constructs or siRNAs partially eliminated AEG-1-regulated EMT, cell migration and invasion. In addition, overexpression or knockdown of eIF4E promoted or suppressed EMT, cell migration and invasion in parallel with upregulation of MMP-9 and Twist expression, while manipulating eIF4E expression partially abrogated AEG-1-induced MMP-9 and Twist. Finally, silencing of AEG-1 expression not only inhibited tumour growth in parallel with downregulation of eIF4E, MMP-9 and Twist expression in a xenograft nude mouse model, but also suppressed lymph node and peritoneal metastasis of gastric cancer in an orthotopic nude mouse model. These findings suggest that AEG-1 promotes gastric cancer metastasis through upregulation of eIF4E-mediated MMP-9 and Twist, which provides new diagnostic markers and therapeutic targets for cancer metastasis.
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Affiliation(s)
- Shengjie Wu
- Department of Pharmacology, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Li Yang
- Department of General Surgery, Medical Oncology and Pathology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Dandan Wu
- Department of Pharmacology, Nanjing Medical University, Nanjing, Jiangsu, China.,Department of Basic Medicine, Kangda College of Nanjing Medical University, Lianyungang, Jiangsu, China
| | - Zhongyuan Gao
- Department of Pharmacology, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Ping Li
- Department of Pharmacology, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Wenbin Huang
- Department of Pathology, Nanjing Medical University Affiliated Nanjing Hospital (Nanjing First Hospital), Nanjing, Jiangsu, China
| | - Xuerong Wang
- Department of Pharmacology, Nanjing Medical University, Nanjing, Jiangsu, China
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32
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Thivyah Prabha A, Sekar D. Deciphering the molecular signaling pathways in breast cancer pathogenesis and their role in diagnostic and treatment modalities. GENE REPORTS 2017. [DOI: 10.1016/j.genrep.2017.01.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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33
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Burton LJ, Rivera M, Hawsawi O, Zou J, Hudson T, Wang G, Zhang Q, Cubano L, Boukli N, Odero-Marah V. Muscadine Grape Skin Extract Induces an Unfolded Protein Response-Mediated Autophagy in Prostate Cancer Cells: A TMT-Based Quantitative Proteomic Analysis. PLoS One 2016; 11:e0164115. [PMID: 27755556 PMCID: PMC5068743 DOI: 10.1371/journal.pone.0164115] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Accepted: 09/19/2016] [Indexed: 01/06/2023] Open
Abstract
Muscadine grape skin extract (MSKE) is derived from muscadine grape (Vitis rotundifolia), a common red grape used to produce red wine. Endoplasmic reticulum (ER) stress activates the unfolded protein response (UPR) that serves as a survival mechanism to relieve ER stress and restore ER homeostasis. However, when persistent, ER stress can alter the cytoprotective functions of the UPR to promote autophagy and cell death. Although MSKE has been documented to induce apoptosis, it has not been linked to ER stress/UPR/autophagy. We hypothesized that MSKE may induce a severe ER stress response-mediated autophagy leading to apoptosis. As a model, we treated C4-2 prostate cancer cells with MSKE and performed a quantitative Tandem Mass Tag Isobaric Labeling proteomic analysis. ER stress response, autophagy and apoptosis were analyzed by western blot, acridine orange and TUNEL/Annexin V staining, respectively. Quantitative proteomics analysis indicated that ER stress response proteins, such as GRP78 were greatly elevated following treatment with MSKE. The up-regulation of pro-apoptotic markers PARP, caspase-12, cleaved caspase-3, -7, BAX and down-regulation of anti-apoptotic marker BCL2 was confirmed by Western blot analysis and apoptosis was visualized by increased TUNEL/Annexin V staining upon MSKE treatment. Moreover, increased acridine orange, and LC3B staining was detected in MSKE-treated cells, suggesting an ER stress/autophagy response. Finally, MSKE-mediated autophagy and apoptosis was antagonized by co-treatment with chloroquine, an autophagy inhibitor. Our results indicate that MSKE can elicit an UPR that can eventually lead to apoptosis in prostate cancer cells.
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Affiliation(s)
- Liza J. Burton
- Center for Cancer Research and Therapeutic Development, Department of Biological Sciences, Clark Atlanta University, Atlanta, GA, 30314, United States of America
| | - Mariela Rivera
- Department of Microbiology and Immunology, School of Medicine, Universidad Central del Caribe, Bayamon, PR, 00956, United States of America
| | - Ohuod Hawsawi
- Center for Cancer Research and Therapeutic Development, Department of Biological Sciences, Clark Atlanta University, Atlanta, GA, 30314, United States of America
| | - Jin Zou
- Center for Cancer Research and Therapeutic Development, Department of Biological Sciences, Clark Atlanta University, Atlanta, GA, 30314, United States of America
| | - Tamaro Hudson
- Department of Medicine, Howard University, Washington, DC, 20060, United States of America
| | - Guangdi Wang
- Department of Chemistry, Xavier University, New Orleans, LA, 70125, United States of America
| | - Qiang Zhang
- Department of Chemistry, Xavier University, New Orleans, LA, 70125, United States of America
| | - Luis Cubano
- Department of Microbiology and Immunology, School of Medicine, Universidad Central del Caribe, Bayamon, PR, 00956, United States of America
| | - Nawal Boukli
- Department of Microbiology and Immunology, School of Medicine, Universidad Central del Caribe, Bayamon, PR, 00956, United States of America
| | - Valerie Odero-Marah
- Center for Cancer Research and Therapeutic Development, Department of Biological Sciences, Clark Atlanta University, Atlanta, GA, 30314, United States of America
- * E-mail:
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34
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CUEDC2 down-regulation is associated with tumor growth and poor prognosis in lung adenocarcinoma. Oncotarget 2016; 6:20685-96. [PMID: 26023733 PMCID: PMC4653035 DOI: 10.18632/oncotarget.3930] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2014] [Accepted: 04/30/2015] [Indexed: 12/24/2022] Open
Abstract
CUE domain-containing 2 (CUEDC2) is a multi-functional protein, which regulates cell cycle, growth factor signaling and inflammation. We found that CUEDC2 was low in lung adenocarcinoma cell lines and lung adenocarcinoma tissues at both mRNA and protein levels. Low levels of CUEDC2 were correlated with a shorter survival time in patients with lung adenocarcinoma (p = 0.004). CUEDC2 expression was correlated with tumor T classification (P = 0.001) at clinical stage (P = 0.001) and tumor size (P = 0.033). Multivariate analysis suggested that CUEDC2 expression is an independent prognostic indicator for patients with lung adenocarcinoma. Ectopic expression of CUEDC2 decreased cell proliferation in vitro and inhibited tumor growth in nude mice in vivo. Knockdown of endogenous CUEDC2 by short hairpin RNAs (shRNAs) increased tumor growth. Inhibition of proliferation by CUEDC2 was associated with inactivation of the PI3K/Akt pathway, induction of p21 and down-regulation of cyclin D1. Our results suggest that decreased expression of CUEDC2 contributes to tumor growth in lung adenocarcinoma, leading to a poor clinical outcome.
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Chen L, Guo YZ, Li AD, Ma JJ, Hao HY, Zhang D, Wang Y, Ji CG, Qi W, Wang J, Jiang HQ. Knockdown of Astrocyte Elevated Gene-1 Inhibits Activation of Hepatic Stellate Cells. Dig Dis Sci 2016; 61:1961-71. [PMID: 26879903 DOI: 10.1007/s10620-016-4075-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2014] [Accepted: 02/02/2016] [Indexed: 12/13/2022]
Abstract
BACKGROUND Astrocyte elevated gene-1 (AEG-1) is a positive regulator of tumorigenesis and a valuable prognostic marker of a diverse array of cancers, including liver cancer; however, the relationship between AEG-1 and hepatic fibrogenesis is not known. OBJECTIVE The objective of this study was to explore the expression of AEG-1 during hepatic fibrogenesis and determine how AEG-1 regulates the profibrogenic phenotype of hepatic stellate cells (HSCs). METHODS The levels of AEG-1 were monitored in the fibrotic livers and transforming growth factor-β (TGF-β)- or lipopolysaccharide (LPS)-stimulated HSCs. The expression of AEG-1 was knocked down by lentivirus-mediated short hairpin RNA in HSCs, and collagen expression, proliferation assays, apoptosis induction studies, and migration assays were simultaneously conducted in vitro. RESULTS AEG-1 expression was increased in the fibrotic livers. At the cellular level, TGF-β or LPS stimulation, which caused HSC activation, induced AEG-1 expression in HSC-T6 and primary rat HSCs (P < 0.05). Knockdown of AEG-1 inhibited collagen I and α-smooth muscle actin expression (P < 0.05), reduced cell proliferation (P < 0.05) and motility (P < 0.05), and induced cell apoptosis (P < 0.05) in HSCs. This antifibrotic effect caused by lack of AEG-1 was associated with the inactivation of PI3K/Akt and the mitogen-activated protein kinase pathway. CONCLUSIONS Knockdown of AEG-1 suppressed the activation of HSCs by modulating the phenotype and inducing apoptosis. AEG-1 might be a potential target in treatment of hepatic fibrosis.
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Affiliation(s)
- Lei Chen
- Department of Gastroenterology, The Second Hospital of Hebei Medical University, Hebei Key Laboratory of Gastroenterology, Hebei Institute of Gastroenterology, No. 215, Heping West Road, Shijiazhuang, 050000, Hebei Province, China
| | - Yong-Ze Guo
- Department of Gastroenterology, The Second Hospital of Hebei Medical University, Hebei Key Laboratory of Gastroenterology, Hebei Institute of Gastroenterology, No. 215, Heping West Road, Shijiazhuang, 050000, Hebei Province, China
| | - Ai-di Li
- Department of Gastroenterology, The Second Hospital of Hebei Medical University, Hebei Key Laboratory of Gastroenterology, Hebei Institute of Gastroenterology, No. 215, Heping West Road, Shijiazhuang, 050000, Hebei Province, China
| | - Jun-Ji Ma
- Department of Gastroenterology, The Second Hospital of Hebei Medical University, Hebei Key Laboratory of Gastroenterology, Hebei Institute of Gastroenterology, No. 215, Heping West Road, Shijiazhuang, 050000, Hebei Province, China
| | - Hui-Yao Hao
- Department of Endocrinology and Metabolism, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei Province, China
| | - Di Zhang
- Department of Gastroenterology, The Second Hospital of Hebei Medical University, Hebei Key Laboratory of Gastroenterology, Hebei Institute of Gastroenterology, No. 215, Heping West Road, Shijiazhuang, 050000, Hebei Province, China
| | - Yan Wang
- Department of Gastroenterology, The Second Hospital of Hebei Medical University, Hebei Key Laboratory of Gastroenterology, Hebei Institute of Gastroenterology, No. 215, Heping West Road, Shijiazhuang, 050000, Hebei Province, China
| | - Chen-Guang Ji
- Department of Gastroenterology, The Second Hospital of Hebei Medical University, Hebei Key Laboratory of Gastroenterology, Hebei Institute of Gastroenterology, No. 215, Heping West Road, Shijiazhuang, 050000, Hebei Province, China
| | - Wei Qi
- Department of Gastroenterology, The Second Hospital of Hebei Medical University, Hebei Key Laboratory of Gastroenterology, Hebei Institute of Gastroenterology, No. 215, Heping West Road, Shijiazhuang, 050000, Hebei Province, China
| | - Jia Wang
- Department of Gastroenterology, The Second Hospital of Hebei Medical University, Hebei Key Laboratory of Gastroenterology, Hebei Institute of Gastroenterology, No. 215, Heping West Road, Shijiazhuang, 050000, Hebei Province, China
| | - Hui-Qing Jiang
- Department of Gastroenterology, The Second Hospital of Hebei Medical University, Hebei Key Laboratory of Gastroenterology, Hebei Institute of Gastroenterology, No. 215, Heping West Road, Shijiazhuang, 050000, Hebei Province, China.
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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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Sajadimajd S, Yazdanparast R, Akram S. Involvement of Numb-mediated HIF-1α inhibition in anti-proliferative effect of PNA-antimiR-182 in trastuzumab-sensitive and -resistant SKBR3 cells. Tumour Biol 2016; 37:5413-26. [PMID: 26563369 DOI: 10.1007/s13277-015-4297-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2015] [Accepted: 10/20/2015] [Indexed: 12/21/2022] Open
Abstract
Trastuzumab is a humanized monoclonal antibody against the human epidermal growth factor receptor 2 (HER2) that is overexpressed in about 25 % of breast cancer patients. However, primary and/or acquired resistance to trastuzumab develops in most affected persons. In this study, we explored the functional role of miR-182 inhibition with aiming the sensitization of SKBR3 cells to trastuzumab. Cell viability, apoptosis, colony formation, and migration capacities of SKBR3(S) (sensitive) and SKBR3(R) (resistant) cells were assessed to determine the anti-proliferative effects of PNA-antimiR-182. In addition, the expression levels of miR-182, mRNA of FOXO1, and Bim as well as the protein levels of HER2 and Notch1 signaling factors were evaluated by stem-loop RT-qPCR, RT-qPCR, and Western blot, respectively. The results indicated that miR-182 might play a causal role in the mechanism of trastuzumab. In line with that, PNA-antimiR-182 inhibited synergistically the viability of both the sensitive and resistant cell groups. Furthermore, the inhibitory effect of PNA-anitmiR-182 on migration in SKBR3 cells was more than the induction of apoptosis. In addition, PNA-antimiR-182 reduced the levels of NICD, Hes1, HIF-1α, and p-Akt in both cell groups, while it augmented the intracellular content of FOXO1 and Numb suppressor proteins. In other words, PNA-antimiR-182-mediated upregulation of Numb was associated with downregulation of HIF-1α and Hes1. Consequently, downregulation of miR-182 might find therapeutical value for overcoming trastuzumab resistance. Graphical Abstract The crosstalk between HER2 and Notch1 signaling pathway is mediated by miR-182.
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Affiliation(s)
- Soraya Sajadimajd
- Institute of Biochemistry and Biophysics, University of Tehran, P. O. Box 13145-1384, Tehran, Iran
| | - Razieh Yazdanparast
- Institute of Biochemistry and Biophysics, University of Tehran, P. O. Box 13145-1384, Tehran, Iran.
| | - Sadeghirizi Akram
- Institute of Biochemistry and Biophysics, University of Tehran, P. O. Box 13145-1384, Tehran, Iran
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Midline2 is overexpressed and a prognostic indicator in human breast cancer and promotes breast cancer cell proliferation in vitro and in vivo. Front Med 2016; 10:41-51. [PMID: 26791755 DOI: 10.1007/s11684-016-0429-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Accepted: 10/27/2015] [Indexed: 12/21/2022]
Abstract
Midline2 (MID2) is an ubiquitin-conjugating E2 enzyme linked to tumor progression and a novel interacting partner of breast cancer 1, early-onset (BRCA1). However, the role of MID2 in breast cancer remains unknown. This study investigated the expression, prognostic value, and role of MID2 in breast cancer. The expression of MID2 mRNA and protein was significantly upregulated in breast cancer tissue and established cell lines compared with that in normal breast epithelial cells and paired adjacent non-tumor tissue (P < 0.001). Immunohistochemical analysis demonstrated that MID2 was overexpressed in 272 of 284 (95.8%) paraffinembedded, archived breast cancer tissue. Moreover, MID2 expression increased with advanced clinical stage (P < 0.001). High MID2 expression was significantly associated with advanced clinical stages and T, N, and M staging (all P < 0.05). Univariate and multivariate analyses indicated that high MID2 expression was an independent prognostic factor for poor overall survival in the entire cohort (93.73 vs. 172.1 months; P < 0.001, logrank test) and in subgroups with stages Tis + I + II and III + IV. Furthermore, 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazolium bromide colony formation, and anchorage-independent growth ability assays were conducted. Results showed that siRNA silencing of MID2 expression significantly reduced MCF-7 and MDA-MB-231 cell proliferation in vitro and blocked the growth of MDA-MB-231 cell xenograft tumors in vivo (P < 0.05). This study indicated that MID2 may be a novel prognostic marker and interventional target in breast cancer.
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Li WF, Wang G, Zhao ZB, Liu CA. High expression of metadherin correlates with malignant pathological features and poor prognostic significance in papillary thyroid carcinoma. Clin Endocrinol (Oxf) 2015; 83:572-80. [PMID: 25418110 DOI: 10.1111/cen.12683] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Revised: 10/27/2014] [Accepted: 11/19/2014] [Indexed: 01/02/2023]
Abstract
BACKGROUND Metadherin (MTDH) protein, also called astrocyte elevated gene-1 (AEG-1) is over expressed in a variety of malignant tumours, and is closely related to tumour invasion and the poor prognosis. OBJECTIVE This study tries to explore the clinical pathological significance of MTDH expression in a large cohort of patients with PTC. DESIGN AND PATIENTS Immunohistochemistry was used to detect MTDH expression in 156 cases of PTC, 6 cases of anaplastic thyroid carcinoma (ATC), 10 cases of multinodular goitre (MNG) and 10 cases of thyroid adenoma tissues who received a thyroid operation between June 2003 and July 2008. MEASUREMENTS Clinical pathological data of 156 cases of PTC were analysed according to MTDH expression. The Kaplan-Meier method was used to plot survival curves and log-rank test to compare the postoperative survival results. The prognostic meaning of MTDH expression in PTC was evaluated by Cox regression analysis. RESULTS The positive expression rates of MTDH in PTC and ATC tissues were 37·2% (58/156) and 50% (3/6), respectively, and MTDH positive expression rates were both 10% (1/10) in MNG and thyroid adenoma tissues. High MTDH expression in PTC was associated with larger tumour size (P = 0·030), high rates of lymph node (P = 0·041) and distant metastasis (P = 0·028), but no relation with the patient age, gender, tumour multicenter, extrathyroid invasion and tumour grade. High MTDH expression was associated with recurrence-free survival (RFS) and disease-specific survival rate (DSS) (P = 0·014, P = 0·001, respectively). Cox regression analysis showed that high MTDH expression was independent prognostic indicators for RFS and DSS in patients with PTC (P = 0·023 and P = 0·035, respectively). CONCLUSION High MTDH expression in PTC might play an important role in tumour growth and metastasis, and targeting MTDH treatment might have potential therapeutic value for patients with PTC.
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Affiliation(s)
- Wen-Fang Li
- Department of General Surgery, the Second Hospital Affiliated to Chongqing Medical University, Chongqing, China
| | - Gen Wang
- Department of General Surgery, Taihe Hospital Affiliated to Hubei Medical University, Shiyan City, China
| | - Zong-Bin Zhao
- Department of General Surgery, Taihe Hospital Affiliated to Hubei Medical University, Shiyan City, China
| | - Chang-An Liu
- Department of General Surgery, the Second Hospital Affiliated to Chongqing Medical University, Chongqing, China
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Downregulated AEG-1 together with inhibited PI3K/Akt pathway is associated with reduced viability of motor neurons in an ALS model. Mol Cell Neurosci 2015; 68:303-13. [PMID: 26320681 DOI: 10.1016/j.mcn.2015.08.009] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2014] [Revised: 06/16/2015] [Accepted: 08/18/2015] [Indexed: 11/24/2022] Open
Abstract
Astrocyte elevated gene-1 (AEG-1) has been reported to regulate the phosphatidylinositol 3-kinase (PI3K)/Akt pathway and is also regulated by it. This study investigated how AEG-1 participates in the survival pathway of motor neurons in amyotrophic lateral sclerosis (ALS). We found reduced levels of AEG-1 in ALS motor neurons, both in vivo and in vitro, compared to wild type controls. Moreover, AEG-1 silencing demonstrated inhibition of the PI3K/Akt pathway and increased cell apoptosis. Additionally, the PI3K/Akt pathway in mSOD1 cells was unresponsive under serum deprivation conditions compared to wtSOD1 cells. These results suggest that AEG-1 deficiency, together with the inhibited PI3K/Akt pathway was associated with decreased viability of ALS motor neurons. However, the mRNA levels of AEG-1 were still lower in mSOD1 cells compared to the control groups, though the signaling pathway was activated by application of a PI3-K activator. This suggests that in ALS motor neurons, some unknown interruption exists in the PI3K/Akt/CREB/AEG-1 feedback loop, thus attenuating the protection by this signaling pathway. Together, these findings support that AEG-1 is a critical factor for cell survival, and the disrupted PI3K/Akt/CREB/AEG-1cycle is involved in the death of injured motor neurons and pathogenesis of ALS.
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Li WF, Ou Q, Dai H, Liu CA. Lentiviral-Mediated Short Hairpin RNA Knockdown of MTDH Inhibits Cell Growth and Induces Apoptosis by Regulating the PTEN/AKT Pathway in Hepatocellular Carcinoma. Int J Mol Sci 2015; 16:19419-32. [PMID: 26287185 PMCID: PMC4581304 DOI: 10.3390/ijms160819419] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2015] [Accepted: 08/10/2015] [Indexed: 12/19/2022] Open
Abstract
The activation of oncogenes and the loss of tumor suppressor genes are believed to play critical roles in the pathogenesis of human hepatocellular carcinoma (HCC). Metaherin (MTDH), also called astrocyte elevated gene-1 (AEG-1), is frequently amplified in a variety of cancers, but the roles of MTDH with regard to growth and apoptosis in HCC have not yet been studied. In the present study, we first analyzed the expression of MTDH in HCC samples. We found that MTDH protein levels are higher in most HCC cancerous tissues compared with their matched adjacent non-tumor tissues. Additionally, the MTDH mRNA was also higher in HCC tissues compared to their matched adjacent non-tumor tissues. Knockdown of the endogenous MTDH using small interfering RNA further showed that deficiency of MTDH suppressed cell growth and caused apoptosis in HCC cells. Knockdown MTDH promoted PTEN and p53 expression in HCC cells and inhibited AKT phosphorylation. Knockdown MTDH also inhibited tumor growth in vivo. All these results indicated that MTDH protein levels in most HCC tissues are higher than non-tumor tissues, and knockdown of MTDH inhibited growth and induced apoptosis in HCC cells through the activation of PTEN. Therefore, MTDH might be an effective targeted therapy gene for HCC.
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Affiliation(s)
- Wen-Fang Li
- Department of Hepatibiliary Surgery, the Second Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China.
| | - Qin Ou
- Department of Cancer Research Center, Hubei Medical University, Shiyan 442000, China.
| | - Hang Dai
- Department of Hepatibiliary Surgery, the Second Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China.
| | - Chang-An Liu
- Department of Hepatibiliary Surgery, the Second Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China.
- State Key Laboratory of Ultrasound Engineering in Medicine Co-Founded by Chongqing and the Ministry of Science and Technology, Shiyan 442000, China.
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Hu J, Boeri M, Sozzi G, Liu D, Marchianò A, Roz L, Pelosi G, Gatter K, Pastorino U, Pezzella F. Gene Signatures Stratify Computed Tomography Screening Detected Lung Cancer in High-Risk Populations. EBioMedicine 2015; 2:831-40. [PMID: 26425689 PMCID: PMC4563137 DOI: 10.1016/j.ebiom.2015.07.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Revised: 06/29/2015] [Accepted: 07/01/2015] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Although screening programmes of smokers have detected resectable early lung cancers more frequently than expected, their efficacy in reducing mortality remains debatable. To elucidate the biological features of computed tomography (CT) screening detected lung cancer, we examined the mRNA signatures on tumours according to the year of detection, stage and survival. METHODS Gene expression profiles were analysed on 28 patients (INT-IEO training cohort) and 24 patients of Multicentre Italian Lung Detection (MILD validation cohort). The gene signatures generated from the training set were validated on the MILD set and a public deposited DNA microarray data set (GSE11969). Expression of selected genes and proteins was validated by real-time RT-PCR and immunohistochemistry. Enriched core pathway and pathway networks were explored by GeneSpring GX10. FINDINGS A 239-gene signature was identified according to the year of tumour detection in the training INT-IEO set and correlated with the patients' outcomes. These signatures divided the MILD patients into two distinct survival groups independently of tumour stage, size, histopathological type and screening year. The signatures can also predict survival in the clinically detected cancers (GSE11969). Pathway analyses revealed tumours detected in later years enrichment of the PI3K/PTEN/AKT pathway, with up-regulation of PDPK1, ITGB1 and down-regulation of FOXO1A. Analysis of normal lung tissue from INT-IEO cohort produced signatures distinguishing patients with early from late detected tumours. INTERPRETATION The distinct pattern of "indolent" and "aggressive" tumour exists in CT-screening detected lung cancer according to the gene expression profiles. The early development of an aggressive phenotype may account for the lack of mortality reduction by screening observed in some cohorts.
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Affiliation(s)
- Jiangting Hu
- Nuffield Division of Clinical Laboratory Sciences, Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, United Kingdom
| | | | | | - Dongxia Liu
- Nuffield Division of Clinical Laboratory Sciences, Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, United Kingdom
| | - Alfonso Marchianò
- Division of Radiology, Milan, Italy ; Medical Statistics and Bioinformatics Unit, Milan, Italy
| | - Luca Roz
- Tumor Genomics Unit, Milan, Italy
| | - Giuseppe Pelosi
- Pathology Unit, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - Kevin Gatter
- Nuffield Division of Clinical Laboratory Sciences, Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, United Kingdom
| | | | - Francesco Pezzella
- Nuffield Division of Clinical Laboratory Sciences, Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, United Kingdom
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Robertson CL, Srivastava J, Rajasekaran D, Gredler R, Akiel MA, Jariwala N, Siddiq A, Emdad L, Fisher PB, Sarkar D. The role of AEG-1 in the development of liver cancer. Hepat Oncol 2015; 2:303-312. [PMID: 26798451 DOI: 10.2217/hep.15.10] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
AEG-1 is an oncogene that is overexpressed in all cancers, including hepatocellular carcinoma. AEG-1 plays a seminal role in promoting cancer development and progression by augmenting proliferation, invasion, metastasis, angiogenesis and chemoresistance, all hallmarks of aggressive cancer. AEG-1 mediates its oncogenic function predominantly by interacting with various protein complexes. AEG-1 acts as a scaffold protein, activating multiple protumorigenic signal transduction pathways, such as MEK/ERK, PI3K/Akt, NF-κB and Wnt/β-catenin while regulating gene expression at transcriptional, post-transcriptional and translational levels. Our recent studies document that AEG-1 is fundamentally required for activation of inflammation. A comprehensive and convincing body of data currently points to AEG-1 as an essential component critical to the onset and progression of cancer. The present review describes the current knowledge gleaned from patient and experimental studies as well as transgenic and knockout mouse models, on the impact of AEG-1 on hepatocarcinogenesis.
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Affiliation(s)
- Chadia L Robertson
- Department of Human & Molecular Genetics, Virginia Commonwealth University, Sanger Hall, Room 11-0051101 East Marshall Street, PO Box 980033, Richmond, VA 23298-0033, USA
| | - Jyoti Srivastava
- Department of Human & Molecular Genetics, Virginia Commonwealth University, Sanger Hall, Room 11-0051101 East Marshall Street, PO Box 980033, Richmond, VA 23298-0033, USA
| | - Devaraja Rajasekaran
- Department of Human & Molecular Genetics, Virginia Commonwealth University, Sanger Hall, Room 11-0051101 East Marshall Street, PO Box 980033, Richmond, VA 23298-0033, USA
| | - Rachel Gredler
- Department of Human & Molecular Genetics, Virginia Commonwealth University, Sanger Hall, Room 11-0051101 East Marshall Street, PO Box 980033, Richmond, VA 23298-0033, USA
| | - Maaged A Akiel
- Department of Human & Molecular Genetics, Virginia Commonwealth University, Sanger Hall, Room 11-0051101 East Marshall Street, PO Box 980033, Richmond, VA 23298-0033, USA
| | - Nidhi Jariwala
- Department of Human & Molecular Genetics, Virginia Commonwealth University, Sanger Hall, Room 11-0051101 East Marshall Street, PO Box 980033, Richmond, VA 23298-0033, USA
| | - Ayesha Siddiq
- Department of Human & Molecular Genetics, Virginia Commonwealth University, Sanger Hall, Room 11-0051101 East Marshall Street, PO Box 980033, Richmond, VA 23298-0033, USA
| | - Luni Emdad
- Department of Human & Molecular Genetics, Virginia Commonwealth University, Sanger Hall, Room 11-0051101 East Marshall Street, PO Box 980033, Richmond, VA 23298-0033, USA; VCU Massey Cancer Center, Virginia Commonwealth University, 401 College Street, Richmond, VA 23298, USA
| | - Paul B Fisher
- Department of Human & Molecular Genetics, Virginia Commonwealth University, Sanger Hall, Room 11-0051101 East Marshall Street, PO Box 980033, Richmond, VA 23298-0033, USA; VCU Massey Cancer Center, Virginia Commonwealth University, 401 College Street, Richmond, VA 23298, USA; VCU Institute of Molecular Medicine, Virginia Commonwealth University, Molecular Medicine Research Building 1220 East Broad Street, 7th Floor PO Box 980033, Richmond, VA 23298-0033, USA
| | - Devanand Sarkar
- Department of Human & Molecular Genetics, Virginia Commonwealth University, Sanger Hall, Room 11-0051101 East Marshall Street, PO Box 980033, Richmond, VA 23298-0033, USA; VCU Massey Cancer Center, Virginia Commonwealth University, 401 College Street, Richmond, VA 23298, USA; VCU Institute of Molecular Medicine, Virginia Commonwealth University, Molecular Medicine Research Building 1220 East Broad Street, 7th Floor PO Box 980033, Richmond, VA 23298-0033, USA
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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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Song Z, Wang Y, Li C, Zhang D, Wang X. Molecular Modification of Metadherin/MTDH Impacts the Sensitivity of Breast Cancer to Doxorubicin. PLoS One 2015; 10:e0127599. [PMID: 25993398 PMCID: PMC4437901 DOI: 10.1371/journal.pone.0127599] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2014] [Accepted: 04/16/2015] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND Breast cancer is a leading cause of death in women and with an increasing worldwide incidence. Doxorubicin, as a first-line anthracycline-based drug is conventional used on breast cancer clinical chemotherapy. However, the drug resistances limited the curative effect of the doxorubicin therapy in breast cancer patients, but the molecular mechanism determinants of breast cancer resistance to doxorubicin chemotherapy are not fully understood. In order to explore the association between metadherin (MTDH) and doxorubicin sensitivity, the differential expressions of MTDH in breast cancer cell lines and the sensitivity to doxorubicin of breast cancer cell lines were investigated. METHODS The mRNA and protein expression of MTDH were determined by real-time PCR and Western blot in breast cancer cells such as MDA-MB-231, MCF-7, MDA-MB-435S, MCF-7/ADR cells. Once MTDH gene was knocked down by siRNA in MCF-7/ADR cells and overexpressed by MTDH plasmid transfection in MDA-MB-231 cells, the cell growth and therapeutic sensitivity of doxorubicin were evaluated using MTT and the Cell cycle assay and apoptosis rate was determined by flow cytometry. RESULTS MCF-7/ADR cells revealed highly expressed MTDH and MDA-MB-231 cells had the lowest expression of MTDH. After MTDH gene was knocked down, the cell proliferation was inhibited, and the inhibitory rate of cell growth and apoptosis rate were enhanced, and the cell cycle arrest during the G0/G1 phase in the presence of doxorubicin treatment. On the other hand, the opposite results were observed in MDA-MB-231 cells with overexpressed MTDH gene. CONCLUSION MTDH gene plays a promoting role in the proliferation of breast cancer cells and its high expression may be associated with doxorubicin sensitivity of breast cancer.
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Affiliation(s)
- Zhenchuan Song
- Department of Breast Center, Fourth Hospital of Hebei Medical University No. 169 Tian Shan Street, Shijiazhuang, 050035, China
| | - Yong Wang
- Department of Breast Center, Fourth Hospital of Hebei Medical University No. 169 Tian Shan Street, Shijiazhuang, 050035, China
| | - Chao Li
- Department of Breast Center, Fourth Hospital of Hebei Medical University No. 169 Tian Shan Street, Shijiazhuang, 050035, China
| | - Donghong Zhang
- Department of Breast Center, Fourth Hospital of Hebei Medical University No. 169 Tian Shan Street, Shijiazhuang, 050035, China
| | - Xinle Wang
- Department of Breast Center, Fourth Hospital of Hebei Medical University No. 169 Tian Shan Street, Shijiazhuang, 050035, China
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Sun B, Li J, Shao D, Pan Y, Chen Y, Li S, Yao X, Li H, Liu W, Zhang M, Zhang X, Chen L. Adipose tissue-secreted miR-27a promotes liver cancer by targeting FOXO1 in obese individuals. Onco Targets Ther 2015; 8:735-44. [PMID: 25897249 PMCID: PMC4396586 DOI: 10.2147/ott.s80945] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
The current notion that obesity is a major risk factor for the development of and the mortality associated with a subset of liver cancer is well appreciated. However, detailed mechanistic insights underlying this relationship are lacking. Better understanding of the adipose tissue-secreted miRNAs that play a potential role in defining primary liver cancer development and mediating the obesity-cancer communication offers the potential for new insights into tumor growth and interventions to modulate tumor formation and progression. In this study, we clearly demonstrated that miR-27a is more highly upregulated in cancer, plasma, and adipose samples from obese liver cancer cases, and therefore reasoned that miR-27a excreted from adipose tissue leads to liver cancer development. To address this idea, we prepared miR-27a-overexpressing 3T3-L1 adipocytes and cocultured them with HepG2 liver cancer cells. Our results demonstrated that secretory miR-27a promoted liver cancer cell proliferation through the downregulation of the transcription factor FOXO1 and promoted the G1/S cell cycle transition by decreasing the cell cycle inhibitors p21 and p27 and increasing the cell cycle regulator cyclin D1. These findings improve our understanding of the involvement of miR-27a in obesity-liver cancer communication and might provide a novel putative target for obesity-driven primary liver cancer diagnosis and therapy.
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Affiliation(s)
- Baozhen Sun
- Department of Hepatobiliary and Pancreas Surgery, China-Japan Union Hospital of Jilin University, Changchun, People's Republic of China
| | - Jing Li
- Department of Pharmacology, Nanomedicine Engineering Laboratory of Jilin Province, College of Basic Medical Sciences, Jilin University, Changchun, People's Republic of China
| | - Dan Shao
- Department of Pharmacology, Nanomedicine Engineering Laboratory of Jilin Province, College of Basic Medical Sciences, Jilin University, Changchun, People's Republic of China
| | - Yue Pan
- Department of Pharmacology, Nanomedicine Engineering Laboratory of Jilin Province, College of Basic Medical Sciences, Jilin University, Changchun, People's Republic of China
| | - Yujing Chen
- Department of Pharmacology, Nanomedicine Engineering Laboratory of Jilin Province, College of Basic Medical Sciences, Jilin University, Changchun, People's Republic of China
| | - Suo Li
- Department of Hepatobiliary and Pancreas Surgery, China-Japan Union Hospital of Jilin University, Changchun, People's Republic of China
| | - Xiaoxiao Yao
- Department of Hepatobiliary and Pancreas Surgery, China-Japan Union Hospital of Jilin University, Changchun, People's Republic of China
| | - Hang Li
- Department of Hepatobiliary and Pancreas Surgery, China-Japan Union Hospital of Jilin University, Changchun, People's Republic of China
| | - Weiwei Liu
- School of Stomatology, Jilin University, Changchun, People's Republic of China
| | - Ming Zhang
- Department of Pharmacology, Nanomedicine Engineering Laboratory of Jilin Province, College of Basic Medical Sciences, Jilin University, Changchun, People's Republic of China
| | - Xuewen Zhang
- Department of Hepatobiliary and Pancreas Surgery, China-Japan Union Hospital of Jilin University, Changchun, People's Republic of China
| | - Li Chen
- Department of Pharmacology, Nanomedicine Engineering Laboratory of Jilin Province, College of Basic Medical Sciences, Jilin University, Changchun, People's Republic of China
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He W, He S, Wang Z, Shen H, Fang W, Zhang Y, Qian W, Lin M, Yuan J, Wang J, Huang W, Wang L, Ke Z. Astrocyte elevated gene-1(AEG-1) induces epithelial-mesenchymal transition in lung cancer through activating Wnt/β-catenin signaling. BMC Cancer 2015; 15:107. [PMID: 25880337 PMCID: PMC4358870 DOI: 10.1186/s12885-015-1124-1] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2014] [Accepted: 02/24/2015] [Indexed: 12/19/2022] Open
Abstract
Background Non-small cell lung cancer (NSCLC) is a highly metastatic cancer with limited therapeutic options, so development of novel therapies that target NSCLC is needed. During the early stage of metastasis, the cancer cells undergo an epithelial-mesenchymal transition (EMT), a phase in which Wnt/β-catenin signaling is known to be involved. Simultaneously, AEG-1 has been demonstrated to activate Wnt-mediated signaling in some malignant tumors. Methods Human NSCLC cell lines and xenograft of NSCLC cells in nude mice were used to investigate the effects of AEG-1 on EMT. EMT or Wnt/β-catenin pathway-related proteins were characterized by western blot, immunofluorescence and immunohistochemistry. Results In the present study, we demonstrated that astrocyte elevated gene-1(AEG-1) ectopic overexpression promoted EMT, which resulted from the down-regulation of E-cadherin and up-regulation of Vimentin in lung cancer cell lines and clinical lung cancer specimens. Using an orthotopic xenograft-mouse model, we also observed that AEG-1 overexpression in human carcinoma cells led to the development of multiple lymph node metastases and elevated mesenchymal markers such as Vimentin, which is a characteristic of cells in EMT. Furthermore, AEG-1 functioned as a critical protein in the regulation of EMT by directly targeting multiple positive regulators of the Wnt/β-catenin signaling cascade, including GSK-3β and CKIδ. Notably, overexpression of AEG-1 in metastatic cancer tissues was closely associated with poor survival of NSCLC patients. Conclusions These results reveal the critical role of AEG-1 in EMT and suggest that AEG-1 may be a prognostic biomarker and its targeted inhibition may be utilized as a novel therapy for NSCLC.
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Affiliation(s)
- Weiling He
- Department of Gastrointestinal Surgery, Guangzhou, 510080, Province Guangdong, Peoples' Republic of China.
| | - Shanyang He
- Gynecology, and the First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, Province Guangdong, Peoples' Republic of China.
| | - Zuo Wang
- Department of Pathology, the First Affiliated Hospital, Sun Yat-Sen University, 58 Zhongshan Road II, Guangzhou, Guangdong, 510080, Peoples' Republic of China.
| | - Hongwei Shen
- Gynecology, and the First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, Province Guangdong, Peoples' Republic of China.
| | - Wenfeng Fang
- Department of Oncology, Sun Yat-sen University CancerCenter, Guangzhou, 510060, Province Guangdong, Peoples' Republic of China.
| | - Yang Zhang
- College of Engineering, University of Texas, El Paso 500 West University Avenue, El Paso, TX, 79968, USA.
| | - Wei Qian
- College of Engineering, University of Texas, El Paso 500 West University Avenue, El Paso, TX, 79968, USA.
| | - Millicent Lin
- Department of Molecular and Medical Pharmacology, University of California, Los Angeles, 570 Westwood Plaza, Los Angeles, CA, 90095-1770, USA.
| | - Jinglun Yuan
- Department of Molecular and Medical Pharmacology, University of California, Los Angeles, 570 Westwood Plaza, Los Angeles, CA, 90095-1770, USA.
| | - Jinyang Wang
- Department of Anatomy, School of Basic Medical Science, Southern Medical University, Guangzhou, Guangdong, 510515, Peoples' Republic of China.
| | - Wenhua Huang
- Department of Anatomy, School of Basic Medical Science, Southern Medical University, Guangzhou, Guangdong, 510515, Peoples' Republic of China.
| | - Liantang Wang
- Department of Pathology, the First Affiliated Hospital, Sun Yat-Sen University, 58 Zhongshan Road II, Guangzhou, Guangdong, 510080, Peoples' Republic of China.
| | - Zunfu Ke
- Department of Pathology, the First Affiliated Hospital, Sun Yat-Sen University, 58 Zhongshan Road II, Guangzhou, Guangdong, 510080, Peoples' Republic of China.
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Zhu GC, Yu CY, She L, Tan HL, Li G, Ren SL, Su ZW, Wei M, Huang DH, Tian YQ, Su RN, Liu Y, Zhang X. Metadherin regulation of vascular endothelial growth factor expression is dependent upon the PI3K/Akt pathway in squamous cell carcinoma of the head and neck. Medicine (Baltimore) 2015; 94:e502. [PMID: 25674742 PMCID: PMC4602746 DOI: 10.1097/md.0000000000000502] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Our previous study indicated overexpression of metadherin (MTDH) is an adverse prognostic factor in squamous cell carcinoma of the head and neck (SCCHN) and promotes SCCHN cell proliferation and invasion. However, its mechanism remains unclear. Recent studies have indicated that MTDH is a cancer-metastasis-associated molecule that participates in the process of angiogenesis. Therefore, the study is aimed to investigate that whether vascular endothelial growth factor (VEGF), as one of the most potent proangiogenic cytokines, is regulated by MTDH and the role of the phosphatidylinositide 3-kinases/Protein Kinase B (PI3K/Akt) pathway in this process of regulation and the clinical significance of both MTDH and VEGF in SCCHN.Immunohistochemistry was used to assay the expression of MTDH and VEGF in a cohort of 189 SCCHN patients with intact follow-up information. The expression of MTDH was then upregulated or inhibited by lentivirus-mediated MTDH Complementary deoxyribonucleic acid or MTDH short hairpin ribonucleic acid (shRNA) to observe the resulting alterations in VEGF expression and the PI3K/Akt signaling pathway in SCCHN cell lines. In addition, the PI3K/Akt pathway was modulated to observe the resulting changes in the MTDH-mediated expression of VEGF.The immunohistochemistry data showed that MTDH expression is positively correlated with VEGF expression in SCCHN tissues. Moreover, the overexpression of MTDH in SCCHN Tu686 and 5-8F cells led to increases in the expression of VEGF, and this effect was accompanied by activation of the PI3K/Akt pathway. Conversely, shRNA-mediated knockdown of MTDH led to decreased VEGF expression. In addition, inhibition of the Akt signaling pathway reversed the upregulation of VEGF resulting from MTDH overexpression. Moreover, the survival analysis revealed that VEGF is an independent prognostic factor, and a combined survival analysis based on both MTDH and VEGF showed synergistic effects in the prognosis evaluation of SCCHN patients.The findings of the present study demonstrate that MTDH regulates the expression of VEGF via the PI3K/Akt signaling pathway, indicating the potential role of the MTDH-mediated activation of VEGF signaling pathway in SCCHN angiogenesis and metastasis.
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Affiliation(s)
- Gang-Cai Zhu
- From the Department of Otolaryngology Head and Neck Surgery (G-cZ, C-yY, LS, H-lT, GL, S-lR, Z-wS, MW, D-hH, Y-qT, YL, XZ), Xiangya Hospital, Central South University; Otolaryngology Major Disease Research Key Laboratory of Hunan Province (G-cZ, C-yY, LS, H-lT, GL, S-lR, Z-wS, MW, D-hH, Y-qT, YL, XZ); and Department of Dermatology (R-nS), Xiangya Hospital, Central South University, Changsha, Hunan, 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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Zhou B, Yang J, Shu B, Liu K, Xue L, Su N, Liu J, Xi T. Overexpression of astrocyte-elevated gene-1 is associated with ovarian cancer development and progression. Mol Med Rep 2014; 11:2981-90. [PMID: 25483832 DOI: 10.3892/mmr.2014.3056] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2014] [Accepted: 11/07/2014] [Indexed: 11/06/2022] Open
Abstract
It has previously been reported that astrocyte‑elevated gene‑1 (AEG‑1) has a critical role in the regulation of tumor development, and/or progression. However, the functional significance of AEG‑1 in human ovarian cancer remains unclear. The present study conducted an immunohistochemical analysis of ovarian tissues, and the association between AEG‑1 protein expression, clinicopathological features and outcomes were investigated. The gain or loss of AEG‑1 function was also examined, through exogenous overexpression or knockdown of expression by small interfering RNA, in ovarian cancer cells. Normal ovarian tissue exhibited very little or no AEG‑1 immunoreactivity, whereas high expression levels of AEG‑1 were detected in 12.7% of cystadenomas, 30.0% of borderline tumors, and 71.2% of ovarian carcinomas, respectively, as determined by immunohistochemistry. Statistical analyses demonstrated a significant correlation of AEG‑1 expression with differentiation (P=0.001), lymph node metastasis (P=0.008) and clinical staging (P=0.002). In addition, the overall survival time of patients with higher AEG‑1 expression levels was markedly shorter, as compared with patients with lower expression levels of AEG‑1 (P=0.001). Multivariate analysis indicated that AEG‑1 expression was an independent prognostic indicator of the survival of patients with ovarian cancer. Furthermore, exogenous overexpression of AEG‑1 in ovarian cancer cells was shown to significantly enhance cell proliferation, adhesion and invasion. Conversely, silencing AEG‑1 expression caused an inhibition of cell growth, adhesion and invasion. The results of the present study indicate that AEG‑1 is a valuable biomarker for the prediction of ovarian cancer prognosis, and AEG‑1 inhibition may be a potential therapeutic strategy for ovarian cancer treatment.
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Affiliation(s)
- Bo Zhou
- State Key Laboratory of Natural Medicines, School of Life Science and Technology, China Pharmaceutical University, Nanjing, Jiangsu 210009, P.R. China
| | - Jue Yang
- State Key Laboratory of Natural Medicines, School of Life Science and Technology, China Pharmaceutical University, Nanjing, Jiangsu 210009, P.R. China
| | - Bin Shu
- Department of Toxicology, Jiangsu Center of Safety Evaluation for Drugs, School of Pharmaceutical Sciences, Nanjing University of Technology, Nanjing, Jiangsu 210009, P.R. China
| | - Kunmei Liu
- Ningxia Key Laboratory of Cerebrocranial Diseases, School of Laboratory Medicine, Ningxia Medical University, Yinchuan, Ningxia 750004, P.R. China
| | - Lezhen Xue
- Department of Toxicology, Jiangsu Center of Safety Evaluation for Drugs, School of Pharmaceutical Sciences, Nanjing University of Technology, Nanjing, Jiangsu 210009, P.R. China
| | - Ning Su
- Department of Toxicology, Jiangsu Center of Safety Evaluation for Drugs, School of Pharmaceutical Sciences, Nanjing University of Technology, Nanjing, Jiangsu 210009, P.R. China
| | - Jing Liu
- Department of Toxicology, Jiangsu Center of Safety Evaluation for Drugs, School of Pharmaceutical Sciences, Nanjing University of Technology, Nanjing, Jiangsu 210009, P.R. China
| | - Tao Xi
- State Key Laboratory of Natural Medicines, School of Life Science and Technology, China Pharmaceutical University, Nanjing, Jiangsu 210009, P.R. China
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