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Yang Y, Zhang J, Xia T, Li G, Tian T, Wang M, Wang R, Zhao L, Yang Y, Lan K, Zhou W. MicroRNA-210 promotes cancer angiogenesis by targeting fibroblast growth factor receptor-like 1 in hepatocellular carcinoma. Oncol Rep 2016; 36:2553-2562. [PMID: 27666683 DOI: 10.3892/or.2016.5129] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Accepted: 01/21/2016] [Indexed: 11/05/2022] Open
Abstract
Hypoxia drives cancer to become more aggressive, particularly angiogenesis, and the corresponding mechanisms still need to be further investigated. In hepatocellular carcinoma (HCC), the master hypoxia-induced microRNA (miRNA) miR-210 is upregulated in HCC and participates in HCC progression, but its roles in hypoxia-induced HCC angiogenesis are still unknown. Moreover, the correlation between miR-210 expression and HCC clinical progression also needs elucidation. In the present study, we found that miR-210 expression was progressively increased from normal liver and adjacent non-tumor tissues, to incipient and advanced tumor tissues. In HCC patients, high miR-210 expression was significantly correlated with poor prognosis, both tumor-free survival and overall survival. Moreover, miR-210 expression in HCC was significantly positively correlated with microvascular density. Both in vitro and in vivo studies determined that miR-210 promoted HCC angiogenesis, and the corresponding mechanism was identified to be the direct targeting and inhibition of fibroblast growth factor receptor-like 1 (FGFRL1) expression. Thus, we suggest a new prognosis predictor for HCC patients, and determined the roles of hypoxic miR-210 in HCC angiogenesis.
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Affiliation(s)
- Yun Yang
- The Third Department of Hepatic Surgery, Eastern Hepatobiliary Surgery Hospital, Shanghai 200438, P.R. China
| | - Jin Zhang
- The Third Department of Hepatic Surgery, Eastern Hepatobiliary Surgery Hospital, Shanghai 200438, P.R. China
| | - Tian Xia
- The Third Department of Hepatic Surgery, Eastern Hepatobiliary Surgery Hospital, Shanghai 200438, P.R. China
| | - Gaiyun Li
- The Key Laboratory of Molecular Virology and Immunology, Institute Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai 200031, P.R. China
| | - Tao Tian
- The Third Department of Hepatic Surgery, Eastern Hepatobiliary Surgery Hospital, Shanghai 200438, P.R. China
| | - Mengchao Wang
- The Third Department of Hepatic Surgery, Eastern Hepatobiliary Surgery Hospital, Shanghai 200438, P.R. China
| | - Ruoyu Wang
- The Third Department of Hepatic Surgery, Eastern Hepatobiliary Surgery Hospital, Shanghai 200438, P.R. China
| | - Linghao Zhao
- The Third Department of Hepatic Surgery, Eastern Hepatobiliary Surgery Hospital, Shanghai 200438, P.R. China
| | - Yuan Yang
- The Third Department of Hepatic Surgery, Eastern Hepatobiliary Surgery Hospital, Shanghai 200438, P.R. China
| | - Ke Lan
- The Key Laboratory of Molecular Virology and Immunology, Institute Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai 200031, P.R. China
| | - Weiping Zhou
- The Third Department of Hepatic Surgery, Eastern Hepatobiliary Surgery Hospital, Shanghai 200438, P.R. China
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102
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Aberrant microRNA expression in tumor mycosis fungoides. Tumour Biol 2016; 37:14667-14675. [DOI: 10.1007/s13277-016-5325-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Accepted: 09/06/2016] [Indexed: 01/12/2023] Open
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103
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Chen Y, Zhao J, Luo Y, Wang Y, Jiang Y. Downregulated expression of miRNA-149 promotes apoptosis in side population cells sorted from the TSU prostate cancer cell line. Oncol Rep 2016; 36:2587-2600. [PMID: 27573045 DOI: 10.3892/or.2016.5047] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Accepted: 03/30/2016] [Indexed: 11/06/2022] Open
Abstract
The objective of the present study was to identify prostate cancer stem cells and determine the effects of modulating specific miRNAs on prostate CSC proliferation and apoptosis. We applied flow cytometry sorting of side population cells to cultures of prostate cancer cell lines (TSU, DU145, PC-3 and LNCaP). The proportion of SP cells in the TSU line was 1.60±0.40% (mean ± SD), while that of the DU145, PC-3 and LNCaP lines was 0.60±0.05, 0.80±0.05 and 0.60±0.20%, respectively. Because the proportion of SP cells derived from TSU cells is greater, these cells were selected to sort side population cells and non-side population cells. The stem-like properties of SP cells had been identified by in vivo and in vitro experiments, and the related study was published. RNA was extracted from the SP cells and non-SP cells and analyzed using miRNA microarray technology. Fifty-three miRNAs with significant differences in their expression were detected in total. Furthermore, 20 of these miRNAs were validated by qPCR. We found that hsa-miR‑149 expression in SP cells and non-SP cells was significantly different; hsa-miR-149 was significantly upregulated in SP cells. By constructing a vector for lentiviral infection, we found that the downregulation of hsa-miR-149 leads to a reduction in proliferation, an increase in apoptosis, and a significant reduction in the colony formation potential, thus, inhibiting tumor growth in vivo of SP cells from the TSU cell line. The present study will provide new avenues toward understanding the function of prostate cancer stem cells (PCSCs) in tumorigenicity and metastasis.
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Affiliation(s)
- Yatong Chen
- Department of Urology, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing 100029, P.R. China
| | - Jiahui Zhao
- Department of Urology, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing 100029, P.R. China
| | - Yong Luo
- Department of Urology, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing 100029, P.R. China
| | - Yongxing Wang
- Department of Urology, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing 100029, P.R. China
| | - Yongguang Jiang
- Department of Urology, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing 100029, P.R. China
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104
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Tang D, Huang Y, Liu W, Zhang X. Up-Regulation of microRNA-210 is Associated with Spermatogenesis by Targeting IGF2 in Male Infertility. Med Sci Monit 2016; 22:2905-10. [PMID: 27535712 PMCID: PMC4999018 DOI: 10.12659/msm.897340] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
BACKGROUND MicroRNAs (miRNAs) play pivotal roles in spermatogenesis. MicroRNA-210 (miR-210) expression was up-regulated in the testes of sterile men with non-obstructive azoospermia (NOA). However, the underlying mechanisms of miR-210 involved in the spermatogenesis in patients with NOA are unknown. MATERIAL AND METHODS Expression of miR-210 and insulin-like growth factor II (IGF2) in the testes of NOA cases (only including maturation arrest and hypospermatogenesis) were detected in this study. We carried out in vitro experiments to determine if IGF2 was directly targeted by miR-210 in NT2 cells. RESULTS Compared with obstructive azoospermia (OA) as normal control, our results suggest that miR-210 was significantly up-regulated in testis of patients with NOA (P<0.05), and IGF2 was down-regulated, but without a significant difference. The results also indicated that IGF2 was directly targeted by miR-210 in NT2 cells. CONCLUSIONS The results showed that miR-210 was involved in spermatogenesis by targeting IGF2 in male infertility.
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Affiliation(s)
- Dongdong Tang
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China (mainland)
| | - Yuanyuan Huang
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China (mainland)
| | - Weiqun Liu
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China (mainland)
| | - Xiansheng Zhang
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China (mainland)
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105
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Zhao C, He J, Cheng H, Zhu Z, Xu H. Enhanced therapeutic effect of an antiangiogenesis peptide on lung cancer in vivo combined with salmonella VNP20009 carrying a Sox2 shRNA construct. J Exp Clin Cancer Res 2016; 35:107. [PMID: 27371094 PMCID: PMC4930618 DOI: 10.1186/s13046-016-0381-4] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Accepted: 06/21/2016] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND HM-3 is a polypeptide inhibiting angiogenesis. Recent reports suggest that the antitumor effect of angiogenesis inhibitors administered alone might be limited. Cancer stem cells can survive the lack of oxygen and nutrients. To achieve better anti-tumor effect, HM-3 was administered in combination with the attenuated Salmonella typhimurium VNP20009 transformed with a shRNA construct against sex determining region Y-box 2 (Sox2). METHODS Cell invasion assay and soft agar colony formation assay were used to assess the migration and growth capability of A549 cells once Sox2 was knocked down with the shRNA construct. The shRNA construct targeting Sox2 was transformed into VNP20009. After the mouse xenograft model of A549 was established, HM-3 was co-administered with VNP20009 carrying the shRNA construct. The growth of tumor was checked to compare the effectiveness of different therapies. Western blotting assay and immunohistochemistry staining of the tumor tissue were used to measure the levels of proteins associated with the apoptosis pathway. RESULTS Sox2 was necessary for the migration and growth of A549 cells. The expression of Sox2 was down regulated in the tumor tissue of the combined treatment group of HM-3 with VNP20009 carrying the Sox2 shRNA construct. Together with the accumulation of salmonella in tumor and the inhibition of angiogenesis by HM-3, more tumor cells went through cell apoptosis with increased expression of Bax, cleaved Caspase 3 and decreased expression of Bcl2. CONCLUSIONS The results suggest the combination of antiangiogenesis agent HM-3 with gene therapy targeting Sox2 delivered by salmonella as a promising strategy for the treatment of lung cancer.
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Affiliation(s)
- Changhong Zhao
- />The Engineering Research Center of Peptide Drug Discovery and Development, China Pharmaceutical University, 24 Tongjia Xiang, Nanjing, 210009 People’s Republic of China
| | - Junjin He
- />The Engineering Research Center of Peptide Drug Discovery and Development, China Pharmaceutical University, 24 Tongjia Xiang, Nanjing, 210009 People’s Republic of China
| | - Haoran Cheng
- />The Engineering Research Center of Peptide Drug Discovery and Development, China Pharmaceutical University, 24 Tongjia Xiang, Nanjing, 210009 People’s Republic of China
| | - Zhaohao Zhu
- />The Engineering Research Center of Peptide Drug Discovery and Development, China Pharmaceutical University, 24 Tongjia Xiang, Nanjing, 210009 People’s Republic of China
| | - Hanmei Xu
- />The Engineering Research Center of Peptide Drug Discovery and Development, China Pharmaceutical University, 24 Tongjia Xiang, Nanjing, 210009 People’s Republic of China
- />State Key Laboratory of Natural Medicines, Ministry of Education, China Pharmaceutical University, 24 Tongjia Xiang, Nanjing, 210009 People’s Republic of China
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106
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Qin Q, Wei F, Zhang J, Wang X, Li B. miR-134 inhibits non-small cell lung cancer growth by targeting the epidermal growth factor receptor. J Cell Mol Med 2016; 20:1974-83. [PMID: 27241841 PMCID: PMC4891324 DOI: 10.1111/jcmm.12889] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Accepted: 04/28/2016] [Indexed: 12/26/2022] Open
Abstract
The epidermal growth factor receptor (EGFR) is frequently activated in a wide range of solid tumours and represents an important therapeutic target. MicroRNAs (miRNAs) have recently been recognized as a rational and potential modality for anti‐EGFR therapies. However, more EGFR‐targeting miRNAs need to be explored. In this study, we identified a novel EGFR‐targeting miRNA, miRNA‐134 (miR‐134), in non‐small‐cell lung cancer (NSCLC) cell lines. Luciferase assays confirmed that EGFR is a direct target of miR‐134. In addition, the overexpression of miR‐134 inhibited EGFR‐related signaling and suppressed NSCLC cells proliferation by inducing cell cycle arrest and/or apoptosis, suggesting that miR‐134 functions as a tumour suppressor in NSCLC. Further mechanistic investigation including RNAi and rescue experiments suggested that the down‐regulation of EGFR by miR‐134 partially contributes to the antiproliferative role of miR‐134. Last, in vivo experiments demonstrated that miR‐134 suppressed tumour growth of A549 xenograft in nude mice. Taken together, our findings suggest that miR‐134 inhibits non‐small cell lung cancer growth by targeting the EGFR.
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Affiliation(s)
- Qin Qin
- Department of Radiation Oncology (Chest Section), Shandong Cancer Hospital and Institute, Shandong University, Jinan, China.,Department of Radiation Oncology (Chest Section), Shandong Cancer Hospital and Institute, Shandong Academy of Medical Sciences, Jinan, China
| | - Furong Wei
- Institute of Basic Medicine, Shandong Academy of Medical Sciences, School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, Jinan, China
| | - Jianbo Zhang
- Department of Pathology, Shandong Cancer Hospital and Institute, Shandong University, Jinan, China
| | - Xingwu Wang
- Basic Research Center, Shandong Cancer Hospital and Institute, Shandong University, Jinan, China
| | - Baosheng Li
- Department of Radiation Oncology (Chest Section), Shandong Cancer Hospital and Institute, Shandong University, Jinan, China. .,Department of Radiation Oncology (Chest Section), Shandong Cancer Hospital and Institute, Shandong Academy of Medical Sciences, Jinan, China.
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107
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Identification of key regulators of pancreatic cancer progression through multidimensional systems-level analysis. Genome Med 2016; 8:38. [PMID: 27137215 PMCID: PMC4853852 DOI: 10.1186/s13073-016-0282-3] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Accepted: 02/19/2016] [Indexed: 01/28/2023] Open
Abstract
BACKGROUND Pancreatic cancer is an aggressive cancer with dismal prognosis, urgently necessitating better biomarkers to improve therapeutic options and early diagnosis. Traditional approaches of biomarker detection that consider only one aspect of the biological continuum like gene expression alone are limited in their scope and lack robustness in identifying the key regulators of the disease. We have adopted a multidimensional approach involving the cross-talk between the omics spaces to identify key regulators of disease progression. METHODS Multidimensional domain-specific disease signatures were obtained using rank-based meta-analysis of individual omics profiles (mRNA, miRNA, DNA methylation) related to pancreatic ductal adenocarcinoma (PDAC). These domain-specific PDAC signatures were integrated to identify genes that were affected across multiple dimensions of omics space in PDAC (genes under multiple regulatory controls, GMCs). To further pin down the regulators of PDAC pathophysiology, a systems-level network was generated from knowledge-based interaction information applied to the above identified GMCs. Key regulators were identified from the GMC network based on network statistics and their functional importance was validated using gene set enrichment analysis and survival analysis. RESULTS Rank-based meta-analysis identified 5391 genes, 109 miRNAs and 2081 methylation-sites significantly differentially expressed in PDAC (false discovery rate ≤ 0.05). Bimodal integration of meta-analysis signatures revealed 1150 and 715 genes regulated by miRNAs and methylation, respectively. Further analysis identified 189 altered genes that are commonly regulated by miRNA and methylation, hence considered GMCs. Systems-level analysis of the scale-free GMCs network identified eight potential key regulator hubs, namely E2F3, HMGA2, RASA1, IRS1, NUAK1, ACTN1, SKI and DLL1, associated with important pathways driving cancer progression. Survival analysis on individual key regulators revealed that higher expression of IRS1 and DLL1 and lower expression of HMGA2, ACTN1 and SKI were associated with better survival probabilities. CONCLUSIONS It is evident from the results that our hierarchical systems-level multidimensional analysis approach has been successful in isolating the converging regulatory modules and associated key regulatory molecules that are potential biomarkers for pancreatic cancer progression.
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108
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Liu Z, Zhang J, Yuan X, Liu B, Liu Y, Li A, Zhang Y, Sun X, Tuo S. Detecting pan-cancer conserved microRNA modules from microRNA expression profiles across multiple cancers. MOLECULAR BIOSYSTEMS 2016; 11:2227-37. [PMID: 26052692 DOI: 10.1039/c5mb00257e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
MicroRNAs (miRNAs) play an indispensable role in cancer initiation and progression. Different cancers have some common hallmarks in general. Analyzing miRNAs that consistently contribute to different cancers can help us to discover the relationship between miRNAs and traits shared by cancers. Most previous works focus on analyzing single miRNA. However, dysregulation of a single miRNA is generally not sufficient to contribute to complex cancer processes. In this study, we put emphasis on analyzing cooperation of miRNAs across cancers. We assume that miRNAs can cooperatively regulate oncogenic pathways and contribute to cancer hallmarks. Such a cooperation is modeled by a miRNA module referred to as a pan-cancer conserved miRNA module. The module consists of miRNAs which simultaneously regulate cancers and are significantly intra-correlated. A novel computational workflow for the module discovery is presented. Multiple modules are discovered from miRNA expression profiles using the method. The function of top two ranked modules are analyzed using the mRNAs which correlate to all the miRNAs in a module across cancers, inferring that the two modules function in regulating the cell cycle which relates to cancer hallmarks as self sufficiency in growth signals and insensitivity to antigrowth signals. Additionally, two novel miRNAs mir-590 and mir-629 are found to cooperate with well-known onco-miRNAs in the modules to contribute to cancers. We also found that PTEN, which is a well known tumor suppressor that regulates the cell cycle, is a common target of miRNAs in the top-one module and cooperative control of PTEN can be a reason for the miRNAs' cooperation. We believe that analyzing the cooperative mechanism of the miRNAs in modules rather than focusing on only single miRNAs may help us know more about the complicated relationship between miRNAs and cancers and develop more effective treatment strategies for cancers.
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Affiliation(s)
- Zhaowen Liu
- School of Computer Science and Technology, Xidian University, Xi'an 710071, Shannxi, China.
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109
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Zhang H, Li S, Yang X, Qiao B, Zhang Z, Xu Y. miR-539 inhibits prostate cancer progression by directly targeting SPAG5. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2016; 35:60. [PMID: 27037000 PMCID: PMC4818461 DOI: 10.1186/s13046-016-0337-8] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/23/2016] [Accepted: 03/28/2016] [Indexed: 01/28/2023]
Abstract
Background We conducted multiple microarray datasets analyses from clinical and xenograft tumor tissues to search for disease progression-driving oncogenes in prostate cancer (PCa). Sperm-associated antigen 5 (SPAG5) attracted our attention. SPAG5 was recently identified as an oncogene participating in lung cancer and cervical cancer progression. However, the roles of SPAG5 in PCa progression remain unknown. Methods SPAG5 expression level in clinical primary PCa, metastatic PCa, castration resistant PCa, neuroendocrine PCa, and normal prostate tissues was investigated. We established multiple in vivo xenografts models using patient-derived tissues and investigated SPAG5 expression trend in these models. We also investigated the functions of SPAG5 in vivo and in vitro studies. Luciferase reporter assays were performed to investigate potential miRNAs that can regulate SPAG5. Results We identified that SPAG5 expression was gradually increased in PCa progression and its level was significantly associated with lymph node metastasis, clinical stage, Gleason score, and biochemical recurrence. Our results indicated that SPAG5 knockdown can drastically inhibit PCa cell proliferation, migration, and invasion in vitro and supress tumor growth and metastasis in vivo. We identified that miR-539 can directly target SPAG5. Ectopic overexpression of miR-539 can drastically inhibit SPAG5 expression and the restoration of SPAG5 expression can reverse the inhibitory effects of miR-539 on PCa cell proliferation and metastasis. Conclusion Our results collectively showed a progression-driving role of SPAG5 in PCa which can be regulated by miR-539, suggesting that miR-539/SPAG5 can serve as a potential therapeutic target for PCa. Electronic supplementary material The online version of this article (doi:10.1186/s13046-016-0337-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Hongtuan Zhang
- Department of Urology, National Key Specialty of Urology, Second Hospital of Tianjin Medical University, Tianjin Key Institute of Urology, Tianjin Medical University, Tianjin, China.,Vancouver Prostate Centre & Department of Urologic Sciences, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Shadan Li
- Vancouver Prostate Centre & Department of Urologic Sciences, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada.,Department of Urology, Chengdu military general hospital, Chendu, Sichuan, China
| | - Xiong Yang
- Department of Urology, National Key Specialty of Urology, Second Hospital of Tianjin Medical University, Tianjin Key Institute of Urology, Tianjin Medical University, Tianjin, China
| | - Baomin Qiao
- Department of Urology, National Key Specialty of Urology, Second Hospital of Tianjin Medical University, Tianjin Key Institute of Urology, Tianjin Medical University, Tianjin, China
| | - Zhihong Zhang
- Department of Urology, National Key Specialty of Urology, Second Hospital of Tianjin Medical University, Tianjin Key Institute of Urology, Tianjin Medical University, Tianjin, China
| | - Yong Xu
- Department of Urology, National Key Specialty of Urology, Second Hospital of Tianjin Medical University, Tianjin Key Institute of Urology, Tianjin Medical University, Tianjin, China.
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Abstract
Recent investigations have highlighted the importance of the non-coding genome in regions of hypoxia in tumours. Such regions are frequently found in solid tumours, and are associated with worse patient survival and therapy resistance. Hypoxia stabilises the transcription factors, hypoxia inducible factors (HIF1α and HIF2α) which coordinate transcriptomic changes that occur in hypoxia. The changes in gene expression induced by HIF1α and HIF2α contribute to many of the hallmarks of cancer phenotypes and enable tumour growth, survival and invasion in the hypoxic tumour microenvironment. Non-coding RNAs, in particular microRNAs (miRNAs), which regulate mRNA stability and translation, and long-non-coding RNAs (lncRNAs), which have diverse functions including chromatin modification and transcriptional regulation, are also important in enabling the key hypoxia regulated processes. They have roles in the regulation of metabolism, angiogenesis, autophagy, invasion and metastasis in the hypoxic microenvironment. Furthermore, HIF1α and HIF2α expression and stabilisation are also regulated by both miRNAs and lncRNAs. Here we review the recent developments in the expression, regulation and functions of miRNAs, lncRNAs and other non-coding RNA classes in tumour hypoxia.
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Affiliation(s)
- Hani Choudhry
- Department of Biochemistry, Faculty of Science, Center of Innovation in Personalized Medicine, King Fahd Center for Medical Research, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Adrian L Harris
- Molecular Oncology Laboratories, Department of Oncology, Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, OX3 9DS, UK.
| | - Alan McIntyre
- Cancer Biology, Division of Cancer and Stem Cells, QMC, University of Nottingham, Nottingham, NG7 2UH, UK.
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Abstract
There is an important and strong, but complex influence of the tumor microenvironment on tumor cells' phenotype, aggressiveness, and treatment sensitivity. One of the most frequent and best-studied aspects of the tumor microenvironment is hypoxia. Low oxygen tension often occurs in tumor cells by several mechanisms, for example, poor angiogenesis and increased oxygen consumption. Hypoxia is a heterogeneous concept with oxygen tensions ranging from <0.01% (anoxia) to 5%, and can be chronic, acute, or cycling, all with differential effects on tumor cells. Quantification of tumor hypoxia can be performed directly or indirectly, and with exogenous or endogenous markers. Tumor cells launch different intracellular signaling pathways to survive hypoxia, such as hypoxia-inducible factor 1-mediated gene expression, the unfolded protein response, and AKT-mammalian target of rapamycin signaling. These pathways induce aggressive, metastatic, and treatment-insensitive tumors and are considered potential targets for (additive) therapy. Hypoxia leads to important, yet currently not well-understood changes in microRNA expression, epigenetics, and metabolism. Further, treatment-insensitive tumors arise through hypoxia-induced Darwinian selection of apoptosis-deficient, p53-mutated tumor cells. In conclusion, hypoxia has profound and largely still poorly understood effects on tumor cells with a major effect on the tumor's biology.
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Affiliation(s)
- Paul N Span
- Department of Radiation Oncology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Johan Bussink
- Department of Radiation Oncology, Radboud University Medical Center, Nijmegen, The Netherlands.
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Wozniak M, Sztiller-Sikorska M, Czyz M. Diminution of miR-340-5p levels is responsible for increased expression of ABCB5 in melanoma cells under oxygen-deprived conditions. Exp Mol Pathol 2015; 99:707-16. [PMID: 26554847 DOI: 10.1016/j.yexmp.2015.11.014] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2015] [Revised: 11/06/2015] [Accepted: 11/06/2015] [Indexed: 12/21/2022]
Abstract
Melanoma is usually highly refractory to chemotherapy. This resistance to treatment is mainly due to high heterogeneity and plasticity of melanoma cells strictly connected to changes in tumor microenvironment. Hypoxia can drastically alter cancer biology. Solid tumor cells under hypoxia gain stem-like features, they are more invasive and drug-resistant than their normoxic counterparts. These effects could be mediated by changes in miRNA expression under hypoxia. MiRNAs are small non-coding RNA molecules that can negatively control gene expression. In the present study using microarray technology we evaluated the expression of miRNAs in melanoma cells derived from nodular melanoma and grown under normoxic and hypoxic conditions. Using R environment for statistical analysis we found that 70 miRNAs were differentially-expressed, and 16 of them were significantly down-regulated in melanoma cells grown in hypoxic conditions compared to cells grown in normoxia. We intended to find transcripts whose expression is increased due to down-regulation of selected miRNAs. Bioinformatics analysis revealed that increased levels of HIF-2α, ABCB5, OCT4, SOX2 and ZEB1 in different melanoma populations under hypoxia could be a result of significant down-regulation of miR-340-5p. Inhibition of miR-340-5p confirmed that this miRNA negatively influences the expression of ABCB5. This is the first study showing the relationship between miR-340-5p and expression of ABCB5, a transmembrane transporter involved in drug resistance considered as a marker of melanoma stem-like cells.
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Affiliation(s)
- Michal Wozniak
- Department of Molecular Biology of Cancer, Medical University of Lodz, 6/8 Mazowiecka Street, 92-215 Lodz, Poland.
| | - Malgorzata Sztiller-Sikorska
- Department of Molecular Biology of Cancer, Medical University of Lodz, 6/8 Mazowiecka Street, 92-215 Lodz, Poland
| | - Malgorzata Czyz
- Department of Molecular Biology of Cancer, Medical University of Lodz, 6/8 Mazowiecka Street, 92-215 Lodz, Poland
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113
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Tang X, Chen L, Yan X, Li Y, Xiong Y, Zhou X. Overexpression of miR-210 is Associated with Poor Prognosis of Acute Myeloid Leukemia. Med Sci Monit 2015; 21:3427-33. [PMID: 26549593 PMCID: PMC4644019 DOI: 10.12659/msm.894812] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Background MicroRNAs play important roles in regulation of the initiation and progression of AML. MiR-210 is closely related with cancer development; however, whether miR-210 expression level correlates with clinical correlation in AML is unknown. Thus, the aim of this study was to investigate the potential relationship between miR-210 expression and AML prognosis. Material/Methods Real-time quantitative PCR was carried out to examine the expression level of miR-210 in bone marrow and serum obtained from AML patients and healthy controls. Then the correlation between miR-210 expression and a variety of important clinical parameters (such as overall survival, relapse-free survival, and prognostic value) were further studied. Results The expression level of miR-210 was significantly higher in the bone marrow and serum of AML patients than that of healthy controls (p<0.001). Moreover, miR-210 expression was associated with various AML clinicopathological parameters, including FAB classification and cytogenetics. The serum miR-210 expression level was reduced significantly when the patients achieved complete remission (p=0.02). The high miR-210 expression group had both poorer relapse-free survival (p=0.015) and worse overall survival (p=0.008). In the multivariate analysis model, miR-210 was identified as an independent prognostic marker. Conclusions MiR-210 up-regulation was associated with poor prognosis in AML and it might be useful as a marker for predicting the clinical outcome of AML patients.
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Affiliation(s)
- Xiaoqiong Tang
- Department of Hematology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China (mainland)
| | - Liping Chen
- Department of Hematology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China (mainland)
| | - Xinyu Yan
- Department of Hematology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China (mainland)
| | - Yuanjie Li
- Department of Hematology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China (mainland)
| | - Yuanlin Xiong
- Department of Hematology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China (mainland)
| | - Xiaohui Zhou
- Department of Hematology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China (mainland)
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Caron JM, Caron JM. Methyl Sulfone Blocked Multiple Hypoxia- and Non-Hypoxia-Induced Metastatic Targets in Breast Cancer Cells and Melanoma Cells. PLoS One 2015; 10:e0141565. [PMID: 26536104 PMCID: PMC4633041 DOI: 10.1371/journal.pone.0141565] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2015] [Accepted: 10/10/2015] [Indexed: 12/18/2022] Open
Abstract
Metastatic cancer causes 90% of cancer deaths. Unlike many primary tumors, metastatic tumors cannot be cured by surgery alone. Metastatic cancer requires chemotherapy. However, metastatic cells are not easily killed by chemotherapy. These problems with chemotherapy are caused in part by the metastatic cell niche: hypoxia. Here we show that the molecule, methyl sulfone, normalized metastatic metabolism of hypoxic breast cancer and melanoma cells by altering several metabolic functions of the cells. Under hypoxia, methyl sulfone decreased expression of the master regulator of hypoxia, HIF-1α, and reduced levels of the glycolytic enzymes, PKM2, LDHA, GLUT1, the pro-angiogenic protein, VEGF, and the iron-sulfur metabolism molecules, miR-210 and transferrin, all of which promote metastasis. Conversely, methyl sulfone increased levels of ISCU1/2 and ferroportin, proteins associated with iron-sulfur cluster biogenesis and iron homeostasis in normal cells. These data identify methyl sulfone as a multi-targeting molecule that blocks the survival/proliferative effect of hypoxia on metastatic cells and brings normality back to cellular metabolism.
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Walsh M, Fais S, Spugnini EP, Harguindey S, Abu Izneid T, Scacco L, Williams P, Allegrucci C, Rauch C, Omran Z. Proton pump inhibitors for the treatment of cancer in companion animals. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2015; 34:93. [PMID: 26337905 PMCID: PMC4559889 DOI: 10.1186/s13046-015-0204-z] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Accepted: 08/10/2015] [Indexed: 12/15/2022]
Abstract
The treatment of cancer presents a clinical challenge both in human and veterinary medicine. Chemotherapy protocols require the use of toxic drugs that are not always specific, do not selectively target cancerous cells thus resulting in many side effects. A recent therapeutic approach takes advantage of the altered acidity of the tumour microenvironment by using proton pump inhibitors (PPIs) to block the hydrogen transport out of the cell. The alteration of the extracellular pH kills tumour cells, reverses drug resistance, and reduces cancer metastasis. Human clinical trials have prompted to consider this as a viable and safe option for the treatment of cancer in companion animals. Preliminary animal studies suggest that the same positive outcome could be achievable. The purpose of this review is to support investigations into the use of PPIs for cancer treatment cancer in companion animals by considering the evidence available in both human and veterinary medicine.
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Affiliation(s)
- Megan Walsh
- School of Veterinary Medicine and Science, University of Nottingham, College Road, Sutton Bonington, LE12 5RD, UK.
| | - Stefano Fais
- Department of Therapeutic Research and Medicines Evaluation, National Institute of Health, Viale Regina Elena 299, 00161, Rome, Italy.
| | | | - Salvador Harguindey
- Institute for Clinical Biology and Metabolism, c) Postas 13, 01004, Vitoria, Spain.
| | - Tareq Abu Izneid
- College of Pharmacy, Umm Al-Qura University, Al-Abidiyya, 21955, Makkah, Kingdom of Saudi Arabia.
| | - Licia Scacco
- Equivet Roma Hospital, Equine Veterinary Clinic, Via di Torre di Sant'Anastasia 83, 00134, Rome, Italy
| | - Paula Williams
- School of Veterinary Medicine and Science, University of Nottingham, College Road, Sutton Bonington, LE12 5RD, UK.
| | - Cinzia Allegrucci
- School of Veterinary Medicine and Science, University of Nottingham, College Road, Sutton Bonington, LE12 5RD, UK.
| | - Cyril Rauch
- School of Veterinary Medicine and Science, University of Nottingham, College Road, Sutton Bonington, LE12 5RD, UK.
| | - Ziad Omran
- College of Pharmacy, Umm Al-Qura University, Al-Abidiyya, 21955, Makkah, Kingdom of Saudi Arabia.
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Espinosa-Diez C, Miguel V, Mennerich D, Kietzmann T, Sánchez-Pérez P, Cadenas S, Lamas S. Antioxidant responses and cellular adjustments to oxidative stress. Redox Biol 2015; 6:183-197. [PMID: 26233704 PMCID: PMC4534574 DOI: 10.1016/j.redox.2015.07.008] [Citation(s) in RCA: 718] [Impact Index Per Article: 79.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Accepted: 07/06/2015] [Indexed: 02/08/2023] Open
Abstract
Redox biological reactions are now accepted to bear the Janus faceted feature of promoting both physiological signaling responses and pathophysiological cues. Endogenous antioxidant molecules participate in both scenarios. This review focuses on the role of crucial cellular nucleophiles, such as glutathione, and their capacity to interact with oxidants and to establish networks with other critical enzymes such as peroxiredoxins. We discuss the importance of the Nrf2-Keap1 pathway as an example of a transcriptional antioxidant response and we summarize transcriptional routes related to redox activation. As examples of pathophysiological cellular and tissular settings where antioxidant responses are major players we highlight endoplasmic reticulum stress and ischemia reperfusion. Topologically confined redox-mediated post-translational modifications of thiols are considered important molecular mechanisms mediating many antioxidant responses, whereas redox-sensitive microRNAs have emerged as key players in the posttranscriptional regulation of redox-mediated gene expression. Understanding such mechanisms may provide the basis for antioxidant-based therapeutic interventions in redox-related diseases. Antioxidant responses are crucial for both redox signaling and redox damage. Glutathione-mediated reactions and Nrf2-Keap1 pathway are key antioxidant responses. Redox-related post-translational modifications activate specific signaling pathways. Redox-sensitive microRNAs contribute to redox-mediated gene expression regulation. ER stress and ischemia-reperfusion are antioxidant-related pathophysiological events.
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Affiliation(s)
- Cristina Espinosa-Diez
- Department of Cell Biology and Immunology, Centro de Biología Molecular "Severo Ochoa" (CSIC-UAM), Nicolás Cabrera 1, 28049 Madrid, Spain
| | - Verónica Miguel
- Department of Cell Biology and Immunology, Centro de Biología Molecular "Severo Ochoa" (CSIC-UAM), Nicolás Cabrera 1, 28049 Madrid, Spain
| | - Daniela Mennerich
- Faculty of Biochemistry and Molecular Medicine, Biocenter Oulu, Aapistie 7, University of Oulu, FI-90230 Oulu, Finland
| | - Thomas Kietzmann
- Faculty of Biochemistry and Molecular Medicine, Biocenter Oulu, Aapistie 7, University of Oulu, FI-90230 Oulu, Finland
| | - Patricia Sánchez-Pérez
- Centro de Biología Molecular "Severo Ochoa" (CSIC-UAM) and Departamento de Biología Molecular, Universidad Autónoma de Madrid, Nicolás Cabrera 1, 28049 Madrid, Spain; Instituto de Investigación Sanitaria Princesa (IIS-IP), 28006 Madrid, Spain
| | - Susana Cadenas
- Centro de Biología Molecular "Severo Ochoa" (CSIC-UAM) and Departamento de Biología Molecular, Universidad Autónoma de Madrid, Nicolás Cabrera 1, 28049 Madrid, Spain; Instituto de Investigación Sanitaria Princesa (IIS-IP), 28006 Madrid, Spain
| | - Santiago Lamas
- Department of Cell Biology and Immunology, Centro de Biología Molecular "Severo Ochoa" (CSIC-UAM), Nicolás Cabrera 1, 28049 Madrid, Spain.
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117
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Eissa S, Matboli M, Essawy NOE, Kotb YM. Integrative functional genetic-epigenetic approach for selecting genes as urine biomarkers for bladder cancer diagnosis. Tumour Biol 2015; 36:9545-52. [PMID: 26138586 DOI: 10.1007/s13277-015-3722-6] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Accepted: 06/25/2015] [Indexed: 01/10/2023] Open
Abstract
Early screening for bladder cancer (BC) holds the key to combat and control the increasing global burden of BC mortality. We presented a simple approach to characterize, analyze, and validate a panel of biomarkers in BC and their relationship to bilharziasis. We investigated voided urine and blood samples from patients with bladder cancer (n = 94), benign bladder lesions (n = 60), and age-matched normal controls (n = 56). This study was divided into the following phases. (1) We analyzed the expression of urinary Hyaluronoglucosaminidase 1 (HYAL1) protein in BC and control samples by zymography. (2) We performed bioinformatics analysis to retrieve a set of epigenetic regulators of HYAL1. (3) This set of three selected genes [long non-coding RNA-urothelial cancer associated 1(lncRNA-UCA1), microRNA-210, and microRNA-96] was then analyzed in the same urine samples used in phase I by quantitative real-time PCR. (4) A high reproducibility of gene selection results was also determined from statistical validation. The urinary expression of HYAL1 protein and its epigenetic regulators were higher in BC patients (P < .001). The receiver-operating characteristic curve analyses demonstrated that each one had good sensitivity and specificity for distinguishing BC patients from non-BC ones (HYAL1, 89.4 and 91.2 %; miR-210, 76.6 and 93 %; miR-96, 76.6 and 89.4 %; and lncRNA-UCA1, 91.5 and 96.5 %). There was a significant positive correlation between HYAL1 and the selected epigenetic biomarkers. The performance of this urine biomarker panel reached 100 % sensitivity and 89.5 % specificity for bladder cancer diagnosis.
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Affiliation(s)
- Sanaa Eissa
- Oncology Diagnostic Unit, Medical Biochemistry and Molecular biology Department, Faculty of Medicine, Ain Shams University, P.O. box 11381, Abbassia, Cairo, Egypt.
| | - Marwa Matboli
- Oncology Diagnostic Unit, Medical Biochemistry and Molecular biology Department, Faculty of Medicine, Ain Shams University, P.O. box 11381, Abbassia, Cairo, Egypt
| | - Nada O E Essawy
- Pharmacogenetics and Stratified Medicine, University College London, London, UK
| | - Youssef M Kotb
- Urology Department, Faculty of Medicine, Ain Shams University, Cairo, Egypt
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118
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MicroRNAs in tumor angiogenesis. Life Sci 2015; 136:28-35. [PMID: 26144623 DOI: 10.1016/j.lfs.2015.06.025] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2015] [Revised: 06/03/2015] [Accepted: 06/30/2015] [Indexed: 01/07/2023]
Abstract
As it is necessary for tumor growth, angiogenesis has been an attractive target for drug therapy. Accumulating evidences indicate that microRNAs (miRNAs), which are short non-coding RNAs, delicately regulate the angiogenic signals through targeting angiogenic factors and protein kinases. They can modulate pro-angiogenic signals induced by vascular endothelial growth factor (VEGF) and anti-angiogenic signals induced by thrombospondin-1 (TSP-1), and therefore promote or inhibit tumor angiogenesis. Receptor tyrosine kinases (RTKs) and hypoxia inducible factor (HIF) are also targeted by miRNAs. Moreover, miRNAs crosstalk with reactive oxygen species (ROS) influencing tumor angiogenesis. It is critical to understand the role of miRNAs in tumor angiogenesis due to their therapeutic potential to improve outcome for cancer patients. The following review discusses the current state of knowledge related to tumor angiogenesis-regulatory miRNAs and their targets.
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119
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Du C, Weng X, Hu W, Lv Z, Xiao H, Ding C, Gyabaah OAK, Xie H, Zhou L, Wu J, Zheng S. Hypoxia-inducible MiR-182 promotes angiogenesis by targeting RASA1 in hepatocellular carcinoma. J Exp Clin Cancer Res 2015; 34:67. [PMID: 26126858 PMCID: PMC4493986 DOI: 10.1186/s13046-015-0182-1] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Accepted: 06/15/2015] [Indexed: 02/07/2023] Open
Abstract
Background Hypoxia is a common feature of solid tumors, including HCC. And hypoxia has been reported to play an important role in HCC progression. However, the potential mechanism of miRNAs in hypoxia mediating HCC progression still remains unclear. Methods The HCC cells were cultured in the atmosphere of 1 % oxygen to induce hypoxia. The microRNA microarray was employed to search for the hypoxia-inducible miRNAs. RT-PCR, western blot and immunohistochemistry were used to detect the RNA and protein levels. HUVEC were applied to explore the angiogenesis level. Results We found that miR-182 was upregulated in the hypoxia-based microarray. We then revealed that miR-182 was also significantly increased in the HCC tissues compared to the corresponding normal tissues. In vitro capilliary tube formation assays showed that the miR-182 promoted angiogenesis. RASA1 was demonstrated as the direct target of miR-182. In addition, the suppression of RASA1 phenocopied the pro-angiogenesis effects of miR-182. Besides, RASA1 was also decreased in the hypoxia HCC cells while the inhibition of miR-182 partially restored the level of RASA1. Conclusions Our data showed that hypoxia regulated the expression of miR-182 and RASA1 to promote HCC angiogenesis. Electronic supplementary material The online version of this article (doi:10.1186/s13046-015-0182-1) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Chengli Du
- Department of Hepatobiliary Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China.,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China
| | - Xiaoyu Weng
- Department of Hepatobiliary Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China
| | - Wendi Hu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China
| | - Zhen Lv
- Department of Hepatobiliary Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China
| | - Heng Xiao
- Department of Hepatobiliary Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China
| | - Chaofeng Ding
- Department of Hepatobiliary Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China
| | - Owusu-Anash K Gyabaah
- Department of Hepatobiliary Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China
| | - Haiyang Xie
- Department of Hepatobiliary Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China
| | - Lin Zhou
- Department of Hepatobiliary Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China
| | - Jian Wu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China. .,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China.
| | - Shusen Zheng
- Department of Hepatobiliary Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China.
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120
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Liu C, Tang X. Downregulation of microRNA-210 inhibits osteosarcoma growth in vitro and in vivo. Mol Med Rep 2015; 12:3674-3680. [PMID: 26044868 DOI: 10.3892/mmr.2015.3880] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2014] [Accepted: 04/16/2015] [Indexed: 11/06/2022] Open
Abstract
MicroRNA‑210 (miR‑210), the master hypoxamir, has various roles in the development of certain cancer types. It has been reported that miR‑210 expression was upregulated in patients with osteosarcoma (OS). However, little is known regarding its role in the development of human OS. In the present study, to explore the feasibility of miR‑210 as an effective therapeutic target, miR‑210 inhibitor was transfected into the osteosarcoma cell line MG‑63 cells, and cell proliferation, colony formation, cycle, apoptosis, migration and invasion were assessed. It was found that miR‑210 downregulation significantly suppressed clonogenicity, migration and invasion, as well as induced cell apoptosis, increased the percentage of cells in G1 phrase and decreased the percentage of cells in S phase in vitro. In addition, the effect of miR‑210 on tumor growth was evaluated in vivo. The results indicated that miR‑210 downregulation significantly suppressed tumor growth in nude mouse models. In conclusion, the findings of the present study suggested that miR‑210 is a potential therapeutic agent for the treatment of OS.
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Affiliation(s)
- Changjian Liu
- Department of Orthopaedics, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China
| | - Xin Tang
- Department of Orthopaedics, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China
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121
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Legendre C, Garcion E. Iron metabolism: a double-edged sword in the resistance of glioblastoma to therapies. Trends Endocrinol Metab 2015; 26:322-31. [PMID: 25936466 DOI: 10.1016/j.tem.2015.03.008] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Revised: 03/27/2015] [Accepted: 03/30/2015] [Indexed: 12/12/2022]
Abstract
Glioblastoma (GBM), the deadliest primary tumor of the central nervous system (CNS), is a clear illustration of the resistance of cancer cells to conventional therapies. Application of combinatorial strategies able to overcome pivotal factors of GBM resistance, particularly within the resection margins, represents an essential issue. This review focuses on the role of iron metabolism in GBM progression and resistance to therapy, and the impact of its pharmaceutical modulation on the disease. Iron, through its involvement in many biological processes, is a key factor in the control of cell behavior and cancer biology. Therefore, targeting cellular iron signaling or taking advantage of its dysregulation in cancer cells may lead to new opportunities for improving treatments and drug delivery in GBM.
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Affiliation(s)
- Claire Legendre
- Institut National de la Santé et de la Recherche Médicale (INSERM) U1066, Bio-Inspired Micro and Nanomedicines (MINT), Angers, France; L'Université Nantes Angers Le Mans (LUNAM), Université d'Angers, Angers, France
| | - Emmanuel Garcion
- Institut National de la Santé et de la Recherche Médicale (INSERM) U1066, Bio-Inspired Micro and Nanomedicines (MINT), Angers, France; L'Université Nantes Angers Le Mans (LUNAM), Université d'Angers, Angers, France.
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122
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Rethinking pheochromocytomas and paragangliomas from a genomic perspective. Oncogene 2015; 35:1080-9. [DOI: 10.1038/onc.2015.172] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2015] [Revised: 03/23/2015] [Accepted: 03/24/2015] [Indexed: 12/12/2022]
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123
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Wei F, Cao C, Xu X, Wang J. Diverse functions of miR-373 in cancer. J Transl Med 2015; 13:162. [PMID: 25990556 PMCID: PMC4490662 DOI: 10.1186/s12967-015-0523-z] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Accepted: 05/06/2015] [Indexed: 12/19/2022] Open
Abstract
MicroRNAs (miRNAs) are small noncoding RNAs that regulate gene expression post-transcriptionally. They are involved in almost all cellular processes, and many have been described as potential oncogenes or tumor suppressors. MicroRNA-373 (miR-373), which was first identified as a human embryonic stem cell (ESC)-specific miRNA, is suggested to be implicated in the regulation of cell proliferation, apoptosis, senescence, migration and invasion, as well as DNA damage repair following hypoxia stress. Deregulation of miR-373 has been demonstrated in a number of cancers, whether it acts as an oncogene or a tumor suppressor, however, seems to be context dependent. In this review, we focus on the diverse functions of miR-373 and its implication in cancers.
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Affiliation(s)
- Furong Wei
- Institute of Basic Medicine, Shandong Academy of Medical Sciences, School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, 18877 Jingshi Road, 250062, Jinan, Shandong, People's Republic of China.
| | - Chuanhua Cao
- Department of Oncology, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, Xiangyang, China.
| | - Xiaoqun Xu
- Institute of Basic Medicine, Shandong Academy of Medical Sciences, School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, 18877 Jingshi Road, 250062, Jinan, Shandong, People's Republic of China.
| | - Junfu Wang
- Institute of Basic Medicine, Shandong Academy of Medical Sciences, School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, 18877 Jingshi Road, 250062, Jinan, Shandong, People's Republic of China.
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Ge YZ, Xin H, Lu TZ, Xu Z, Yu P, Zhao YC, Li MH, Zhao Y, Zhong B, Xu X, Zhou LH, Wu R, Xu LW, Wu JP, Li WC, Zhu JG, Jia RP. MicroRNA expression profiles predict clinical phenotypes and prognosis in chromophobe renal cell carcinoma. Sci Rep 2015; 5:10328. [PMID: 25981392 PMCID: PMC4434887 DOI: 10.1038/srep10328] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2014] [Accepted: 04/08/2015] [Indexed: 12/15/2022] Open
Abstract
Chromophobe renal cell carcinoma (chRCC) is the third most common subtype of kidney cancers. In the present study, we identified 58 treatment-naïve primary chRCC patients from The Cancer Genome Atlas dataset and analyzed the genome-wide microRNA (miRNA) expression profiles, with the aim to assess the relationship of miRNA expression with the progression and prognosis of chRCC. Overall, a total of 105 miRNAs were found to be differentially expressed between tumor and the adjacent normal tissues from 22 chRCC patients. In the unpaired condition (58 chRCC vs. 22 normal tissues), 77 (96.3%) samples were distinguished correctly by the signatures. In the progression-related profiles, 27 miRNAs were selected for pathologic T and 9 for lymph node involvement. In the survival analyses, the expression levels of mir-191, mir-19a, mir-210, and mir-425 were significantly associated with both recurrence-free survival (RFS) and overall survival, while mir-210 was proven as an independent prognostic factor in terms of RFS. In summary, miRNAs are expressed differentially in chRCC, and unique expression of miRNAs is associated with the progression and prognosis of chRCC.
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Affiliation(s)
- Yu-Zheng Ge
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, 68 Changle Road, Nanjing 210006, China
| | - Hui Xin
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, 68 Changle Road, Nanjing 210006, China
| | - Tian-Ze Lu
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, 68 Changle Road, Nanjing 210006, China
| | - Zheng Xu
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, 68 Changle Road, Nanjing 210006, China
| | - Peng Yu
- Department of Urology, The First Hospital of Nanchang, Nanchang University, 128 Xiangshan North Road, Nanchang 330008, China
| | - You-Cai Zhao
- Department of Pathology, Nanjing First Hospital, Nanjing Medical University, 68 Changle Road, Nanjing 210006, China
| | - Ming-Hao Li
- 1] Department of Urology, Nanjing First Hospital, Nanjing Medical University, 68 Changle Road, Nanjing 210006, China [2] Department of Pathology, Nanjing First Hospital, Nanjing Medical University, 68 Changle Road, Nanjing 210006, China
| | - Yan Zhao
- Department of Urology, Xuzhou Third People's Hospital, Jiangsu University, 131 Huancheng Road, Xuzhou 221005, China
| | - Bing Zhong
- Department of Urology, Huaian First People's Hospital, Nanjing Medical University, 6 Beijing West Road, Huaian 223300, China
| | - Xiao Xu
- Department of Radiation Oncology, JiangSu Armed Police General Hospital, 8 Jiangdu South Road, Yangzhou 225003, China
| | - Liu-Hua Zhou
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, 68 Changle Road, Nanjing 210006, China
| | - Ran Wu
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, 68 Changle Road, Nanjing 210006, China
| | - Lu-Wei Xu
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, 68 Changle Road, Nanjing 210006, China
| | - Jian-Ping Wu
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, 68 Changle Road, Nanjing 210006, China
| | - Wen-Cheng Li
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, 68 Changle Road, Nanjing 210006, China
| | - Jia-Geng Zhu
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, 68 Changle Road, Nanjing 210006, China
| | - Rui-Peng Jia
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, 68 Changle Road, Nanjing 210006, China
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Rebucci M, Sermeus A, Leonard E, Delaive E, Dieu M, Fransolet M, Arnould T, Michiels C. miRNA-196b inhibits cell proliferation and induces apoptosis in HepG2 cells by targeting IGF2BP1. Mol Cancer 2015; 14:79. [PMID: 25889892 PMCID: PMC4403945 DOI: 10.1186/s12943-015-0349-6] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2014] [Accepted: 03/19/2015] [Indexed: 12/19/2022] Open
Abstract
Background Tumor hypoxia is one of the features of tumor microenvironment that contributes to chemoresistance. miRNAs have recently been shown to play important roles in tumorigenesis and drug resistance. Moreover, hypoxia also regulates the expression of a series of miRNAs. However, the interaction between chemoresistance, hypoxia and miRNAs has not been explored yet. The aim of this study is to understand the mechanisms activated/inhibited by miRNAs under hypoxia that induce resistance to chemotherapy-induced apoptosis. Methods TaqMan low-density array was used to identify changes in miRNA expression when cells were exposed to etoposide under hypoxia or normoxia. The effects of miR-196b overexpression on apoptosis and cell proliferation were studied in HepG2 cells. miR-196b target mRNAs were identified by proteomic analysis, luciferase activity assay, RT-qPCR and western blot analysis. Results Results showed that hypoxia down-regulated miR-196b expression that was induced by etoposide. miR-196b overexpression increased the etoposide-induced apoptosis and reversed the protection of cell death observed under hypoxia. By a proteomic approach combined with bioinformatics analyses, we identified IGF2BP1 as a potential target of miR-196b. Indeed, miR-196b overexpression decreased IGF2BP1 RNA expression and protein level. The IGF2BP1 down-regulation by either miR-196b or IGF2BP1 siRNA led to an increase in apoptosis and a decrease in cell viability and proliferation in normal culture conditions. However, IGF2BP1 silencing did not modify the chemoresistance induced by hypoxia, probably because it is not the only target of miR-196b involved in the regulation of apoptosis. Conclusions In conclusion, for the first time, we identified IGF2BP1 as a direct and functional target of miR-196b and showed that miR-196b overexpression reverses the chemoresistance induced by hypoxia. These results emphasize that the chemoresistance induced by hypoxia is a complex mechanism. Electronic supplementary material The online version of this article (doi:10.1186/s12943-015-0349-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Magali Rebucci
- Laboratory of Biochemistry and Cellular Biology (URBC), NARILIS, University of Namur, 61 rue de Bruxelles, 5000, Namur, Belgium.
| | - Audrey Sermeus
- Laboratory of Biochemistry and Cellular Biology (URBC), NARILIS, University of Namur, 61 rue de Bruxelles, 5000, Namur, Belgium.
| | - Elodie Leonard
- Laboratory of Biochemistry and Cellular Biology (URBC), NARILIS, University of Namur, 61 rue de Bruxelles, 5000, Namur, Belgium.
| | - Edouard Delaive
- Laboratory of Biochemistry and Cellular Biology (URBC), NARILIS, University of Namur, 61 rue de Bruxelles, 5000, Namur, Belgium.
| | - Marc Dieu
- Laboratory of Biochemistry and Cellular Biology (URBC), NARILIS, University of Namur, 61 rue de Bruxelles, 5000, Namur, Belgium.
| | - Maude Fransolet
- Laboratory of Biochemistry and Cellular Biology (URBC), NARILIS, University of Namur, 61 rue de Bruxelles, 5000, Namur, Belgium.
| | - Thierry Arnould
- Laboratory of Biochemistry and Cellular Biology (URBC), NARILIS, University of Namur, 61 rue de Bruxelles, 5000, Namur, Belgium.
| | - Carine Michiels
- Laboratory of Biochemistry and Cellular Biology (URBC), NARILIS, University of Namur, 61 rue de Bruxelles, 5000, Namur, Belgium.
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Xu X, Ge S, Jia R, Zhou Y, Song X, Zhang H, Fan X. Hypoxia-induced miR-181b enhances angiogenesis of retinoblastoma cells by targeting PDCD10 and GATA6. Oncol Rep 2015; 33:2789-96. [PMID: 25872572 DOI: 10.3892/or.2015.3900] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Accepted: 02/19/2015] [Indexed: 11/06/2022] Open
Abstract
Previous findings showed that miR-181b is upregulated under hypoxic conditions in retinoblastoma cells. Since hypoxia is a common feature of retinoblastoma that affects tumor progression as well as tumor therapy, in the present study, we investigated the regulatory mechanism of miR-181b under hypoxic conditions, and examined the role of miR-181b in retinoblastoma responses to hypoxia (chemoresistance and angiogenesis) and possible downstream genes. The level of hypoxia-inducible factor-1α (HIF-1α) and miR-181b was detected to examine the link between them. Tube formation and cell cytotoxicity assays were used to clarify the effects of miR-181b on hypoxic responses of retinoblastoma cells. Bioinformatics analysis was performed to predict potential targets of miR-181b and western blotting was used to verify these targets. The results showed a significantly increased expression of HIF-1α in hypoxia-treated retinoblastoma cells. Downregulation of HIF-1α using a small-interfering RNA (siRNA) knockdown technology did not decrease the expression of miR-181b. Through gain- and loss-of-function studies, miR-181b was demonstrated to significantly stimulate the ability of capillary tube formation of endothelial cells. Programmed cell death-10 (PDCD10) and GATA binding protein 6 (GATA6) were identified as the target genes of miR‑181b. To the best of our knowledge, results of the present study provide the first evidence that miR-181b was upregulated by hypoxia in retinoblastoma in an HIF-1α-independent manner. miR-181b increased tumor angiogenesis of retinoblastoma cells. Additionally, miR-181b exerts its angiogenic function, at least in part, by inhibiting PDCD10 and GATA6. Thus, it is a new potentially useful therapeutic target for retinoblastoma.
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Affiliation(s)
- Xiaofang Xu
- Department of Ophthalmology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, P.R. China
| | - Shengfang Ge
- Department of Ophthalmology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, P.R. China
| | - Renbing Jia
- Department of Ophthalmology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, P.R. China
| | - Yixiong Zhou
- Department of Ophthalmology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, P.R. China
| | - Xin Song
- Department of Ophthalmology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, P.R. China
| | - He Zhang
- Department of Ophthalmology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, P.R. China
| | - Xianqun Fan
- Department of Ophthalmology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, P.R. China
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127
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Falcone G, Felsani A, D'Agnano I. Signaling by exosomal microRNAs in cancer. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2015; 34:32. [PMID: 25886763 PMCID: PMC4391656 DOI: 10.1186/s13046-015-0148-3] [Citation(s) in RCA: 115] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Accepted: 03/16/2015] [Indexed: 02/08/2023]
Abstract
A class of small non-coding RNAs, the microRNAs (miRNAs), have recently attracted great attention in cancer research since they play a central role in regulation of gene-expression and miRNA aberrant expression is found in almost all types of human cancer. The discovery of circulating miRNAs in body fluids and the finding that they are often tumor specific and can be detected early in tumorigenesis has soon led to the evaluation of their possible use as cancer biomarkers and treatment-response predictors. The evidence that tumor cells communicate via the secretion and delivery of miRNAs packed into tumor-released microvesicles has prompted to investigate miRNA contribution as signaling molecules to the establishment and maintenance of the tumor microenvironment and the metastatic niche in cancer. In this review we highlight the recent advances on the role of exosomal miRNAs as mediators of cancer cell-to-cell communication.
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Affiliation(s)
- Germana Falcone
- Institute of Cell Biology and Neurobiology, CNR, Via Ramarini 32-00015, Monterotondo, RM, Italy.
| | - Armando Felsani
- Institute of Cell Biology and Neurobiology, CNR, Via Ramarini 32-00015, Monterotondo, RM, Italy. .,Genomnia srl, Via Nerviano, 31/B - 20020, Lainate, MI, Italy.
| | - Igea D'Agnano
- Institute of Cell Biology and Neurobiology, CNR, Via Ramarini 32-00015, Monterotondo, RM, Italy.
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128
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Dang K, Myers KA. The role of hypoxia-induced miR-210 in cancer progression. Int J Mol Sci 2015; 16:6353-72. [PMID: 25809609 PMCID: PMC4394536 DOI: 10.3390/ijms16036353] [Citation(s) in RCA: 116] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Revised: 03/11/2015] [Accepted: 03/12/2015] [Indexed: 12/23/2022] Open
Abstract
Prolonged hypoxia, the event of insufficient oxygen, is known to upregulate tumor development and growth by promoting the formation of a neoplastic environment. The recent discovery that a subset of cellular microRNAs (miRs) are upregulated during hypoxia, where they function to promote tumor development, highlights the importance of hypoxia-induced miRs as targets for continued investigation. miRs are short, non-coding transcripts involved in gene expression and regulation. Under hypoxic conditions, miR-210 becomes highly upregulated in response to hypoxia inducing factors (HIFs). HIF-1α drives miR-210’s overexpression and the resultant alteration of cellular processes, including cell cycle regulation, mitochondria function, apoptosis, angiogenesis and metastasis. Here we discuss hypoxia-induced dysregulation of miR-210 and the resultant changes in miR-210 protein targets that regulate cancer progression. Potential methods of targeting miR-210 as a therapeutic tool are also explored.
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Affiliation(s)
- Kyvan Dang
- Department of Biological Sciences, University of the Sciences, 600 S. 43rd Str., Philadelphia, PA 19104, USA.
| | - Kenneth A Myers
- Department of Biological Sciences, University of the Sciences, 600 S. 43rd Str., Philadelphia, PA 19104, USA.
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129
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Nishida-Aoki N, Ochiya T. Interactions between cancer cells and normal cells via miRNAs in extracellular vesicles. Cell Mol Life Sci 2015; 72:1849-61. [PMID: 25563488 PMCID: PMC4412282 DOI: 10.1007/s00018-014-1811-0] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Revised: 12/17/2014] [Accepted: 12/18/2014] [Indexed: 12/21/2022]
Abstract
MicroRNAs (miRNAs) exhibit many functions in biological activities. Recent studies have shown that miRNAs exist outside cells and are transferred between cells. Extracellular miRNAs are protected from ribonucleases found in body fluids through binding to specific proteins or by being encapsulated in lipid bilayer vesicles. Here, we review the mechanisms of the secretion and uptake as well as the functions of extracellular miRNAs, particularly those encapsulated in extracellular vesicles. Extracellular vesicles are related to cancer progression, and some miRNAs in extracellular vesicles are associated with cancer cells. We describe the transfer of cancer-related miRNAs between cancer cells and non-cancerous cells. Finally, we discuss the anticipated applications of miRNAs present in extracellular vesicles in diagnostics and therapeutics.
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Affiliation(s)
- Nao Nishida-Aoki
- Division of Molecular and Cellular Medicine, National Cancer Center Research Institute, 5-1-1, Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan
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130
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The Emerging Role of MitomiRs in the Pathophysiology of Human Disease. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2015; 888:123-54. [DOI: 10.1007/978-3-319-22671-2_8] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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131
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Inada K, Okoshi Y, Cho Y, Saito H, Iijima T, Hori M, Kojima H. Availability of Circulating MicroRNAs as a Biomarker for Early Diagnosis of Diffuse Large B-Cell Lymphoma. ACTA ACUST UNITED AC 2015. [DOI: 10.4236/ojbd.2015.54008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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132
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Xiang S, Fang J, Wang S, Deng B, Zhu L. MicroRNA‑135b regulates the stability of PTEN and promotes glycolysis by targeting USP13 in human colorectal cancers. Oncol Rep 2014; 33:1342-8. [PMID: 25571954 DOI: 10.3892/or.2014.3694] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2014] [Accepted: 11/30/2014] [Indexed: 11/05/2022] Open
Abstract
Dysregulation of microRNAs has been reported to be involved in the progression of human colorectal cancers (CRCs). Loss of the adenomatous polyposis coli (APC) gene is a common initiating event in CRCs. PTEN inactivation by mutation or allelic loss also occurs in CRCs. miR‑135b was reported to be upregulated in CRCs and its overexpression was due to APC/β‑catenin and PTEN/PI3K pathway deregulation. APC was proven to be a target of miR‑135b and forms a feedback loop with miR‑135b. In the present study, we found that ubiquitin‑specific peptidase 13 (USP13) was a target of miR‑135b. miR‑135b downregulated the expression of USP13, and reduced the stability of PTEN. miR‑135b promoted cell proliferation and glycolysis that could be reversed by the overexpression of USP13 or PTEN. Moreover, knockdown of USP13 upregulated the levels of endogenous miR‑135b, but not those in CRC cells with PTEN mutation. The results showed positive feedback loops between miR‑135b and PTEN inactivation in CRCs.
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Affiliation(s)
- Shijun Xiang
- Department of General Surgery, Shanghai First People's Hospital, Shanghai Jiao Tong University, Shanghai 200080, P.R. China
| | - Jiaqing Fang
- Department of Gastroenterology, Changzheng Hospital, Second Military Medical University, Shanghai 200003, P.R. China
| | - Shuyun Wang
- Department of General Surgery, Shanghai First People's Hospital, Shanghai Jiao Tong University, Shanghai 200080, P.R. China
| | - Biao Deng
- Department of General Surgery, Shanghai First People's Hospital, Shanghai Jiao Tong University, Shanghai 200080, P.R. China
| | - Lin Zhu
- Department of General Surgery, Shanghai First People's Hospital, Shanghai Jiao Tong University, Shanghai 200080, P.R. China
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133
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Zhou X, Wang X, Huang Z, Xu L, Zhu W, Liu P. An ER-associated miRNA signature predicts prognosis in ER-positive breast cancer. J Exp Clin Cancer Res 2014; 33:94. [PMID: 25373603 PMCID: PMC4232612 DOI: 10.1186/s13046-014-0094-5] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2014] [Accepted: 10/27/2014] [Indexed: 11/13/2022] Open
Abstract
Background Breast cancer patients with positive estrogen receptor (ER) have a better prognosis. However, no prognostic miRNA signature was reported in the ER-positive breast cancer. The aim of the study was to identify and assess the prognostic significance of a miRNA signature in ER-positive breast cancer. Methods Two cohorts from The Cancer Genome Atlas (TCGA) dataset were used as training (n =596) and testing set (n =319). Differential expression profiling was identified in the training set. And the prognostic value of the miRNA signature was then assessed in the two cohorts. Results A total of 14 miRNAs were observed to be associated with the status of ER by significance analysis of microarrays (SAM) in the training set. Patients were characterized as high score or low score group according to the calculated risk scores from each miRNA. And patients in high score group had worse overall survival compared with those in low score group both in the training and testing set. Conclusions Our study revealed a miRNA signature including 14 miRNAs associated with ER status which could act as a prognostic marker in ER-positive breast cancer. Electronic supplementary material The online version of this article (doi:10.1186/s13046-014-0094-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Xin Zhou
- Department of Oncology, First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, China.
| | - Xiaping Wang
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Clinical Diabetes Centre of Jiangsu Province, Nanjing Medical University, Nanjing, 210029, China.
| | - Zebo Huang
- Department of Oncology, First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, China.
| | - Lei Xu
- Department of Thoracic Surgery, The Affiliated Jiangning Hospital of Nanjing Medical University, Nanjing, 210029, China.
| | - Wei Zhu
- Department of Oncology, First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, China.
| | - Ping Liu
- Department of Oncology, First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, China. .,Cancer Center of Nanjing Medical University, Nanjing, 210029, China.
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