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Wach S, Brandl M, Borchardt H, Weigelt K, Lukat S, Nolte E, Al-Janabi O, Hart M, Grässer F, Giedl J, Jung R, Stöhr R, Hartmann A, Lieb V, Höbel S, Peters A, Stäubert C, Wullich B, Taubert H, Aigner A. Exploring the MIR143-UPAR Axis for the Inhibition of Human Prostate Cancer Cells In Vitro and In Vivo. MOLECULAR THERAPY. NUCLEIC ACIDS 2019; 16:272-283. [PMID: 30933831 PMCID: PMC6444223 DOI: 10.1016/j.omtn.2019.02.020] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 01/16/2019] [Accepted: 02/21/2019] [Indexed: 01/12/2023]
Abstract
MIR143 is pathologically downregulated and may function as a tumor suppressor in prostate cancer. Likewise, the urokinase plasminogen activator receptor (UPAR) is overexpressed in prostate carcinoma, representing a negative prognostic marker and putative therapeutic target gene. In this paper, we establish UPAR as a new direct target of MIR143. Luciferase reporter gene constructs identify one of the two in silico-predicted binding sites as functionally relevant for direct MIR143 binding to the 3′ UTR, and, concomitantly, transfection of MIR143 reduces UPAR protein levels in prostate carcinoma cells in vitro. Inhibitory effects on cell proliferation and colony formation, spheroid growth and integrity, and cell viability are extensively analyzed, and they are compared to direct small interfering RNA (siRNA)-mediated uPAR knockdown or combined microRNA (miRNA)-siRNA treatment. Switching to a therapeutically more relevant in vivo model, we demonstrate tumor-inhibitory effects of MIR143 replacement therapy by systemic treatment of mice bearing subcutaneous PC-3 tumor xenografts with MIR143 formulated in polymeric nanoparticles. This efficient, nanoparticle-mediated delivery of intact MIR143 mediates the marked downregulation of uPAR protein, but not mRNA levels, thus indicating translational inhibition rather than mRNA degradation. In summary, we identify UPAR as a direct target gene of MIR143, and we establish the therapeutic anti-tumor potential of nanoparticle-based MIR143 replacement in prostate cancer.
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Affiliation(s)
- Sven Wach
- Department of Urology, Friedrich Alexander University Hospital Erlangen-Nürnberg, Erlangen, Germany
| | - Madeleine Brandl
- Rudolf-Boehm-Institute for Pharmacology and Toxicology, Clinical Pharmacology, University of Leipzig, Leipzig, Germany
| | - Hannes Borchardt
- Rudolf-Boehm-Institute for Pharmacology and Toxicology, Clinical Pharmacology, University of Leipzig, Leipzig, Germany
| | - Katrin Weigelt
- Department of Urology, Friedrich Alexander University Hospital Erlangen-Nürnberg, Erlangen, Germany
| | - Sabine Lukat
- Department of Urology, Friedrich Alexander University Hospital Erlangen-Nürnberg, Erlangen, Germany
| | - Elke Nolte
- Department of Urology, Friedrich Alexander University Hospital Erlangen-Nürnberg, Erlangen, Germany
| | - Omar Al-Janabi
- Department of Urology, Friedrich Alexander University Hospital Erlangen-Nürnberg, Erlangen, Germany
| | - Martin Hart
- Institute of Virology, University of Saarland Medical School, Kirrbergerstrasse, Homburg/Saar, Germany
| | - Friedrich Grässer
- Institute of Virology, University of Saarland Medical School, Kirrbergerstrasse, Homburg/Saar, Germany
| | - Johannes Giedl
- Institute of Pathology, Friedrich Alexander University Erlangen-Nürnberg, Erlangen, Germany
| | - Rudolf Jung
- Institute of Pathology, Friedrich Alexander University Erlangen-Nürnberg, Erlangen, Germany
| | - Robert Stöhr
- Institute of Pathology, Friedrich Alexander University Erlangen-Nürnberg, Erlangen, Germany
| | - Arndt Hartmann
- Institute of Pathology, Friedrich Alexander University Erlangen-Nürnberg, Erlangen, Germany
| | - Verena Lieb
- Department of Urology, Friedrich Alexander University Hospital Erlangen-Nürnberg, Erlangen, Germany
| | - Sabrina Höbel
- Rudolf-Boehm-Institute for Pharmacology and Toxicology, Clinical Pharmacology, University of Leipzig, Leipzig, Germany
| | - Anna Peters
- Rudolf-Schönheimer-Institute for Biochemistry, University of Leipzig, Leipzig, Germany
| | - Claudia Stäubert
- Rudolf-Schönheimer-Institute for Biochemistry, University of Leipzig, Leipzig, Germany
| | - Bernd Wullich
- Department of Urology, Friedrich Alexander University Hospital Erlangen-Nürnberg, Erlangen, Germany
| | - Helge Taubert
- Department of Urology, Friedrich Alexander University Hospital Erlangen-Nürnberg, Erlangen, Germany.
| | - Achim Aigner
- Rudolf-Boehm-Institute for Pharmacology and Toxicology, Clinical Pharmacology, University of Leipzig, Leipzig, Germany
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Zhou H, Gao Z, Wan F. Taurine-upregulated gene 1 contributes to cancers through sponging microRNA. Acta Biochim Biophys Sin (Shanghai) 2019; 51:123-130. [PMID: 30590378 DOI: 10.1093/abbs/gmy156] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Revised: 11/14/2018] [Accepted: 11/20/2018] [Indexed: 01/05/2023] Open
Abstract
Long non-coding RNAs (lncRNAs) are a class of RNAs whose transcripts are more than 200 nucleotides in length and lack protein-coding ability. Taurine-upregulated gene 1 (TUG1), a novel cancer-related lncRNA, has been documented to be abnormally expressed in various types of cancers and act as an oncogene or anti-oncogene. It has been considered previously that TUG1 is closely related to the cell proliferation, invasion, metastasis, and apoptosis of cancer. In recent years, it has been found that TUG1 acts as a microRNA (miRNA) sponge to indirectly regulate the expression of the miRNA target gene and dominates cancer progression in several types of cancers. However, TUG1 also binds to different miRNAs to produce diverse regulatory mechanisms in the same cancer. TUG1 is expected to be a biomarker and a new therapeutic target for the diagnosis and prognosis of certain cancers. In this review, we highlight the up-to-date original studies that focus on the role of TUG1 sponging miRNA in cancers and summarize the function of TUG1 in cancer progression. The novel TUG1-miRNA regulatory network is comprehensively and minutely included in this review. We hope that this review will help readers obtain a more detailed knowledge of the molecular mechanism by which TUG1 sponging miRNA plays its role in cancers, and provide some insights and directions for future cancer research.
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Affiliation(s)
- Hui Zhou
- The Second Clinical Medical College, Nanchang University, Nanchang, China
| | - Zixu Gao
- The Second Clinical Medical College, Nanchang University, Nanchang, China
| | - Fusheng Wan
- Department of Biochemistry and Molecular Biology, Medical College of Nanchang University, Nanchang, China
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Ye D, Shen Z, Zhou S. Function of microRNA-145 and mechanisms underlying its role in malignant tumor diagnosis and treatment. Cancer Manag Res 2019; 11:969-979. [PMID: 30774425 PMCID: PMC6349084 DOI: 10.2147/cmar.s191696] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
miRNAs are single-stranded small RNAs that do not encode proteins. They can combine complementarily with the 3′-UTRs of target gene mRNA molecules to promote targeted mRNA degradation or inhibit mRNA translation, thereby regulating gene expression at the post-transcriptional level. MiRNAs participate in regulation of cell cycling, growth, apoptosis, differentiation, and stress responses. MiRNA-145 (miR-145) is a tumor suppressor that targets various tumor-specific genes and proteins, thereby influencing related signaling pathways. MiR-145 not only regulates tumor growth, invasion, and metastasis, but is also important for tumor angiogenesis and tumor stem cell proliferation. Here, we review the roles and mechanisms of miR-145 in the diagnosis and treatment of malignant tumors. Published data confirm that miR-145 expression in various tumors is significantly lower than that in normal tissues and that overexpression of miR-145 inhibits the growth of different tumor cells, significantly reduces the ability of tumors to spread, and improves sensitivity to chemotherapeutic drugs. We conclude that miR-145 is a potential marker for use in the early diagnosis and prognostic evaluation of patients with cancer, has a role as a tumor suppressor, and is a promising cancer treatment target candidate.
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Affiliation(s)
- Dong Ye
- Department of Otorhinolaryngology - Head and Neck Surgery, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China, .,Department of Otorhinolaryngology -Head and Neck Surgery, Lihuili Hospital, Ningbo University, Ningbo, Zhejiang, China
| | - Zhisen Shen
- Department of Otorhinolaryngology -Head and Neck Surgery, Lihuili Hospital, Ningbo University, Ningbo, Zhejiang, China
| | - Shuihong Zhou
- Department of Otorhinolaryngology - Head and Neck Surgery, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China,
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A Novel Neighborhood-Based Computational Model for Potential MiRNA-Disease Association Prediction. COMPUTATIONAL AND MATHEMATICAL METHODS IN MEDICINE 2019; 2019:5145646. [PMID: 30800172 PMCID: PMC6360053 DOI: 10.1155/2019/5145646] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/23/2018] [Accepted: 12/11/2018] [Indexed: 01/08/2023]
Abstract
In recent years, more and more studies have shown that miRNAs can affect a variety of biological processes. It is important for disease prevention, treatment, diagnosis, and prognosis to study the relationships between human diseases and miRNAs. However, traditional experimental methods are time-consuming and labour-intensive. Hence, in this paper, a novel neighborhood-based computational model called NBMDA is proposed for predicting potential miRNA-disease associations. Due to the fact that known miRNA-disease associations are very rare and many diseases (or miRNAs) are associated with only one or a few miRNAs (or diseases), in NBMDA, the K-nearest neighbor (KNN) method is utilized as a recommendation algorithm based on known miRNA-disease associations, miRNA functional similarity, disease semantic similarity, and Gaussian interaction profile kernel similarity for miRNAs and diseases to improve its prediction accuracy. And simulation results demonstrate that NBMDA can effectively infer miRNA-disease associations with higher accuracy compared with previous state-of-the-art methods. Moreover, independent case studies of esophageal neoplasms, breast neoplasms and colon neoplasms are further implemented, and as a result, there are 47, 48, and 48 out of the top 50 predicted miRNAs having been successfully confirmed by the previously published literatures, which also indicates that NBMDA can be utilized as a powerful tool to study the relationships between miRNAs and diseases.
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Izadpanah S, Shabani P, Aghebati-Maleki A, Baghbani E, Baghbanzadeh A, Fotouhi A, Bakhshinejad B, Aghebati-Maleki L, Baradaran B. Insights into the roles of miRNAs; miR-193 as one of small molecular silencer in osteosarcoma therapy. Biomed Pharmacother 2019; 111:873-881. [PMID: 30841466 DOI: 10.1016/j.biopha.2018.12.106] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2018] [Revised: 12/09/2018] [Accepted: 12/23/2018] [Indexed: 12/13/2022] Open
Abstract
Today, cancer is one of the most common causes of death. Osteosarcoma (OS) is a tumor in long bones and its prevalence is high in teenagers and young people. Among the methods that used to treat cancer, one can name chemotherapy, surgery, and radiotherapy. Since these methods have some disadvantages and they are not absolutely successful, the use of microRNAs (miRNAs) is very useful in diagnosis and treatment of OS. MiRNAs are small non-coding RNA molecules, containing 18-25 nucleotides, which are involved in the regulation of gene expression via binding to messenger RNA (mRNA). These RNAs are divided into two classes of suppressors and oncogenes. During OS, there is aberrant expression of several miRNAs. Among these miRNAs are downregulation of miR-193 that has been associated with cancer occurrence. The aim of the current manuscript is to have overview on the treatment approaches of OS with special focus on miR-193.
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Affiliation(s)
- Sama Izadpanah
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Parastoo Shabani
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ali Aghebati-Maleki
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Genetics and Molecular Medicine, Faculty of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Elham Baghbani
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Amir Baghbanzadeh
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ali Fotouhi
- Department of Orthopedic Surgery, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Babak Bakhshinejad
- Okinawa Institute of Science and Technology Graduate University, Okinawa, Japan
| | - Leili Aghebati-Maleki
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Immunology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Behzad Baradaran
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Immunology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.
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Targeting MicroRNA-143 Leads to Inhibition of Glioblastoma Tumor Progression. Cancers (Basel) 2018; 10:cancers10100382. [PMID: 30322013 PMCID: PMC6210372 DOI: 10.3390/cancers10100382] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 10/03/2018] [Accepted: 10/08/2018] [Indexed: 12/11/2022] Open
Abstract
Glioblastoma (GBM) is the most common and aggressive of all brain tumors, with a median survival of only 14 months after initial diagnosis. Novel therapeutic approaches are an unmet need for GBM treatment. MicroRNAs (miRNAs) are a class of small non-coding RNAs that regulate gene expression at the post-transcriptional level. Several dysregulated miRNAs have been identified in all cancer types including GBM. In this study, we aimed to uncover the role of miR-143 in GBM cell lines, patient samples, and mouse models. Quantitative real-time RT-PCR of RNA extracted from formalin-fixed paraffin-embedded (FFPE) samples showed that the relative expression of miR-143 was higher in GBM patients compared to control individuals. Transient transfection of GBM cells with a miR-143 oligonucleotide inhibitor (miR-143-inh) resulted in reduced cell proliferation, increased apoptosis, and cell cycle arrest. SLC30A8, a glucose metabolism-related protein, was identified as a direct target of miR-143 in GBM cells. Moreover, multiple injections of GBM tumor-bearing mice with a miR-143-inh-liposomal formulation significantly reduced tumor growth compared to control mice. The reduced in vitro cell growth and in vivo tumor growth following miRNA-143 inhibition suggests that miR-143 is a potential therapeutic target for GBM therapy.
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57
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Lang WJ, Chen FY. The reciprocal link between EVI1 and miRNAs in human malignancies. Gene 2018; 672:56-63. [DOI: 10.1016/j.gene.2018.06.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2017] [Revised: 03/05/2018] [Accepted: 06/03/2018] [Indexed: 12/26/2022]
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Yuan Y, Yang Z, Zou Q. MiRNA-145 Induces Apoptosis in a Gallbladder Carcinoma Cell Line by Targeting DFF45. Open Life Sci 2018; 13:227-235. [PMID: 33817087 PMCID: PMC7874708 DOI: 10.1515/biol-2018-0027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2017] [Accepted: 03/21/2018] [Indexed: 11/15/2022] Open
Abstract
Bakcground We measured expression of miRNA-145 in gallbladder carcinoma and its influence on propagation, invasion, and apoptosis of gallbladder carcinoma cells in vitro. Methods miRNA-145 expression was compared between normal gallbladder epithelial cells and GBS-SD (gallbladder series) cells using miRNA chip technology. Propagation, apoptosis, and invasion properties of each cell group were tested using MTT, a clone-formation assay, flow cytometry, Western blot, and Transwell assays. Results Expression of miRNA-145 was observed to be down-regulated and GBC-SD cell clones transiently transfected with hsa-miRNA-145 were substantially reduced compared with controls (p<0.01). We observed that GBC-SD cells transfected with hsa-miRNA-145 and double-positive (Annexin V and PI) for apoptosis were more numerous than controls. Moreover, GBC-SD cells over-expressing miRNA-145 had significantly greater expression of apoptosis-related protein, caspase-3. A Transwell assay confirmed that GBC-SD cells over-expressing miRNA-145 that migrated to the lower chamber were fewer compared with controls. Post-transcriptional regulation of gene expression was measured using dualluciferase reporter assays and data show that miRNA-145 facilitates the inhibition of GBC-SD cell growth and invasion while inducing apoptosis by targeting DFF45. Conclusion Thus, we speculate that miRNA-145 facilitates inhibition of GBC-SD cell growth and invasion while inducing apoptosis by targeting DFF45; however, miRNA-145 does not directly affect the GBC-SD cell cycle.
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Affiliation(s)
- Yuan Yuan
- Department of Pathology, Third Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
| | - Zhulin Yang
- Research Laboratory of Hepatobiliary Diseases, Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
| | - Qiong Zou
- Department of Pathology, Third Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
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59
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Zhao X, Zhang W, Ji W. MYO5A inhibition by miR-145 acts as a predictive marker of occult neck lymph node metastasis in human laryngeal squamous cell carcinoma. Onco Targets Ther 2018; 11:3619-3635. [PMID: 29950866 PMCID: PMC6016585 DOI: 10.2147/ott.s164597] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
INTRODUCTION Each year, ~50,000 patients worldwide die of laryngeal squamous cell carcinoma (LSCC) because of its highly metastatic properties. However, its pathogenic mechanisms are still unclear, and in particular, the prediction of metastasis remains elusive. This study aimed to define the role of microRNA-145 (miR-145) in LSCC progression. We also aimed to elucidate the clinical significance of the miR-145/MYO5A pathway, especially the predictive function of MYO5A in neck lymph node metastasis. MATERIALS AND METHODS MYO5A and miR-145 expression was analyzed in 132 patients with LSCC, and associations between their expression and clinicopathological features were evaluated. We validated the regulatory relationship between miR-145b and MYO5A by dual luciferase reporter assay. The role of the miR-145/MYO5A pathway in proliferation, metastasis, and apoptosis was examined in vitro. The predictive functions of MYO5A in neck lymph node metastasis and prognosis were defined according to patient follow-up. RESULTS Our results showed downregulation of miR-145 in LSCC, which was negatively correlated with MYO5A suppression of LSCC progression and metastasis. MiR-145 directly regulated MYO5A expression in vitro and suppressed LSCC proliferation and invasion while promoting apoptosis by inhibiting MYO5A. CONCLUSION Notably, overexpression of serum MYO5A in LSCC predicted cervical nodal occult metastasis and poor prognosis, providing an effective indicator for predicting neck lymph node metastasis and assessing LSCC prognosis.
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Affiliation(s)
- Xudong Zhao
- Department of Otorhinolaryngology, Shengjing Hospital, China Medical University, Shenyang, China
| | - Wei Zhang
- Department of Endocrinology, Shengjing Hospital, China Medical University, Shenyang, China
| | - Wenyue Ji
- Department of Otorhinolaryngology, Shengjing Hospital, China Medical University, Shenyang, China
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Alessandrini L, Manchi M, De Re V, Dolcetti R, Canzonieri V. Proposed Molecular and miRNA Classification of Gastric Cancer. Int J Mol Sci 2018; 19:E1683. [PMID: 29882766 PMCID: PMC6032377 DOI: 10.3390/ijms19061683] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 05/30/2018] [Accepted: 06/01/2018] [Indexed: 12/13/2022] Open
Abstract
Gastric cancer (GC) is a common malignant neoplasm worldwide and one of the main cause of cancer-related deaths. Despite some advances in therapies, long-term survival of patients with advanced disease remains poor. Different types of classification have been used to stratify patients with GC for shaping prognosis and treatment planning. Based on new knowledge of molecular pathways associated with different aspect of GC, new pathogenetic classifications for GC have been and continue to be proposed. These novel classifications create a new paradigm in the definition of cancer biology and allow the identification of relevant GC genomic subsets by using different techniques such as genomic screenings, functional studies and molecular or epigenetic characterization. An improved prognostic classification for GC is essential for the development of a proper therapy for a proper patient population. The aim of this review is to discuss the state-of-the-art on combining histological and molecular classifications of GC to give an overview of the emerging therapeutic possibilities connected to the latest discoveries regarding GC.
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Affiliation(s)
- Lara Alessandrini
- Pathology, IRCCS CRO National Cancer Institute, 33081 Aviano, Italy.
| | - Melissa Manchi
- Pathology, IRCCS CRO National Cancer Institute, 33081 Aviano, Italy.
| | - Valli De Re
- Immunopathology and Cancer Biomarkers, IRCCS CRO National Cancer Institute, 33081 Aviano, Italy.
| | - Riccardo Dolcetti
- The University of Queensland Diamantina Institute, Translational Research Institute, Woolloongabba, QLD 4102, Australia.
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Skjefstad K, Johannessen C, Grindstad T, Kilvaer T, Paulsen EE, Pedersen M, Donnem T, Andersen S, Bremnes R, Richardsen E, Al-Saad S, Busund LT. A gender specific improved survival related to stromal miR-143 and miR-145 expression in non-small cell lung cancer. Sci Rep 2018; 8:8549. [PMID: 29867125 PMCID: PMC5986811 DOI: 10.1038/s41598-018-26864-w] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Accepted: 05/15/2018] [Indexed: 12/14/2022] Open
Abstract
Micro RNAs (miRNA) are small non-coding RNAs that post-transcriptionally regulate gene expression. Dysregulation of miRNA cluster 143/145 has been reported in several malignancies, but their role in non-small cell lung cancer (NSCLC) remains elusive. This study investigates the prognostic impact of miR-143 and miR-145 in primary tumors and metastatic lymph nodes in NSCLC tissue. Tissue from 553 primary tumors and 143 matched metastatic lymph nodes were collected and tissue microarrays were constructed. In situ hybridization was used to evaluate miR-143 and miR-145 expression in tumor epithelial cells and stromal cells in the primary tumors and lymph nodes. In vivo data was supplemented with functional studies of cell lines in vitro to evaluate the role of miR-143 and miR-145 in NSCLC tumorigenesis. In our cohort, stromal miR-143 (S-miR-143) and miR-145 (S-miR-145) expression in primary tumor tissue were independent prognosticators of improved disease-specific survival (DSS) in female (S-miR-143, HR: 0.53, p = 0.019) and male patients (S-miR-145, HR: 0.58, p = 0.021), respectively. Interesting correlations between the miR cluster 143/145 and previously investigated steroid hormone receptors from the same cohort were identified, substantiating their gender dependent significance.
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Affiliation(s)
- Kaja Skjefstad
- Department of Medical Biology, UiT The Arctic University of Norway, Mailbox 6050 Langnes, N-9037, Tromso, Norway.
| | - Charles Johannessen
- Department of Medical Biology, UiT The Arctic University of Norway, Mailbox 6050 Langnes, N-9037, Tromso, Norway
| | - Thea Grindstad
- Department of Medical Biology, UiT The Arctic University of Norway, Mailbox 6050 Langnes, N-9037, Tromso, Norway
| | - Thomas Kilvaer
- Department of Clinical Medicine, UiT The Arctic University of Norway, Mailbox 6050 Langnes, N-9037, Tromso, Norway.,Department of Oncology, University Hospital of North Norway, Mailbox 13, N-9038, Tromso, Norway
| | - Erna-Elise Paulsen
- Department of Clinical Medicine, UiT The Arctic University of Norway, Mailbox 6050 Langnes, N-9037, Tromso, Norway.,Department of Oncology, University Hospital of North Norway, Mailbox 13, N-9038, Tromso, Norway
| | - Mona Pedersen
- Department of Clinical Medicine, UiT The Arctic University of Norway, Mailbox 6050 Langnes, N-9037, Tromso, Norway
| | - Tom Donnem
- Department of Clinical Medicine, UiT The Arctic University of Norway, Mailbox 6050 Langnes, N-9037, Tromso, Norway.,Department of Oncology, University Hospital of North Norway, Mailbox 13, N-9038, Tromso, Norway
| | - Sigve Andersen
- Department of Clinical Medicine, UiT The Arctic University of Norway, Mailbox 6050 Langnes, N-9037, Tromso, Norway.,Department of Oncology, University Hospital of North Norway, Mailbox 13, N-9038, Tromso, Norway
| | - Roy Bremnes
- Department of Clinical Medicine, UiT The Arctic University of Norway, Mailbox 6050 Langnes, N-9037, Tromso, Norway.,Department of Oncology, University Hospital of North Norway, Mailbox 13, N-9038, Tromso, Norway
| | - Elin Richardsen
- Department of Medical Biology, UiT The Arctic University of Norway, Mailbox 6050 Langnes, N-9037, Tromso, Norway.,Department of Clinical Pathology, University Hospital of North Norway, Mailbox 46, N-9038, Tromso, Norway
| | - Samer Al-Saad
- Department of Medical Biology, UiT The Arctic University of Norway, Mailbox 6050 Langnes, N-9037, Tromso, Norway.,Department of Clinical Pathology, University Hospital of North Norway, Mailbox 46, N-9038, Tromso, Norway
| | - Lill-Tove Busund
- Department of Medical Biology, UiT The Arctic University of Norway, Mailbox 6050 Langnes, N-9037, Tromso, Norway.,Department of Clinical Pathology, University Hospital of North Norway, Mailbox 46, N-9038, Tromso, Norway
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Taniguchi K, Sugito N, Shinohara H, Kuranaga Y, Inomata Y, Komura K, Uchiyama K, Akao Y. Organ-Specific MicroRNAs ( MIR122, 137, and 206) Contribute to Tissue Characteristics and Carcinogenesis by Regulating Pyruvate Kinase M1/2 ( PKM) Expression. Int J Mol Sci 2018; 19:E1276. [PMID: 29695138 PMCID: PMC5983799 DOI: 10.3390/ijms19051276] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2018] [Revised: 04/16/2018] [Accepted: 04/18/2018] [Indexed: 12/14/2022] Open
Abstract
Pyruvate kinase is known as the glycolytic enzyme catalyzing the final step in glycolysis. In mammals, two different forms of it exist, i.e., pyruvate kinase M1/2 (PKM) and pyruvate kinase L/R (PKLR). Also, PKM has two isoforms, i.e., PKM1 and PKM2. These genes have tissue-specific distribution. Namely, PKM1 is distributed in high-energy-demanding organs, such as brain and muscle. Also, PKM2 is distributed in various other organs, such as the colon. On the other hand, PKLR is distributed in liver and red blood cells (RBCs). Interestingly, PKM2 has been recognized as one of the essential genes for the cancer-specific energy metabolism termed the “Warburg effect”. However, the mechanism(s) underlying this fact have remained largely unclear. Recently, we found that some organ-specific microRNAs (miRNAs, MIR) regulate PKM isoform expression through direct targeting of polypyrimidine tract binding protein 1 (PTBP1), which is the splicer responsible for PKM2-dominant expression. In this study, we examined whether this machinery was conserved in the case of other PTBP1- and PKM-targeting miRNAs. We focused on the MIRs 122, 137, and 206, and investigated the expression profiles of each of these miRNAs in tissues from mouse and human organs. Also, we examined the regulatory mechanisms of PKM isoform expression by testing each of these miRNAs in human cancer cell lines. Presently, we found that brain-specific MIR137 and muscle-specific MIR206 predominantly induced PKM1 expression through direct targeting of PTBP1. Also, liver-specific MIR122 suppressed the expression of both PKM1 and PKM2, which action occurred through direct targeting of PKM to enable the expression of PKLR. Moreover, the expression levels of these miRNAs were downregulated in cancer cells that had originated from these tissues, resulting in PKM2 dominance. Our results suggest that the organ-specific distribution of miRNAs is one of the principal means by which miRNA establishes characteristics of a tissue and that dysregulation of these miRNAs results in cancer development through a change in the ratio of PKM isoform expression. Also, our results contribute to cancer diagnosis and will be useful for cancer-specific therapy for the Warburg effect in the near future.
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Affiliation(s)
- Kohei Taniguchi
- Department of General and Gastroenterological Surgery, Osaka Medical College, 2-7 Daigaku-Machi, Takatsuki, Osaka 569-8686, Japan.
- Translational Research Program, Osaka Medical College, 2-7 Daigaku-Machi, Takatsuki, Osaka 569-8686, Japan.
| | - Nobuhiko Sugito
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan.
| | - Haruka Shinohara
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan.
| | - Yuki Kuranaga
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan.
| | - Yosuke Inomata
- Department of General and Gastroenterological Surgery, Osaka Medical College, 2-7 Daigaku-Machi, Takatsuki, Osaka 569-8686, Japan.
| | - Kazumasa Komura
- Translational Research Program, Osaka Medical College, 2-7 Daigaku-Machi, Takatsuki, Osaka 569-8686, Japan.
| | - Kazuhisa Uchiyama
- Department of General and Gastroenterological Surgery, Osaka Medical College, 2-7 Daigaku-Machi, Takatsuki, Osaka 569-8686, Japan.
| | - Yukihiro Akao
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan.
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MicroRNA-708-3p as a potential therapeutic target via the ADAM17-GATA/STAT3 axis in idiopathic pulmonary fibrosis. Exp Mol Med 2018; 50:e465. [PMID: 29869625 PMCID: PMC5898903 DOI: 10.1038/emm.2017.311] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Revised: 09/27/2017] [Accepted: 10/09/2017] [Indexed: 02/07/2023] Open
Abstract
MicroRNAs (miRNAs) are important diagnostic markers and therapeutic targets for many diseases. However, the miRNAs that control the pathogenesis of idiopathic pulmonary fibrosis (IPF) and act as potential therapeutic targets for the disease are rarely studied. In the present study, we analyzed the function and regulatory mechanism of microRNA-708-3p (miR-708-3p) and evaluated this marker’s potential as a therapeutic target in IPF. The clinical and biological relevance of fibrogenesis for miR-708-3p was assessed in vivo and in vitro, specifically in matching plasma and tissue samples from 78 patients with IPF. The data showed that the miR-708-3p levels decreased during fibrosis and inversely correlated with IPF. The experiments showed that the decreased miR-708 promoter activity and primer-miR-708(pri-miR-708) expression were the potential causes. By computational analysis, a dual luciferase reporter system, rescue experiments and a Cignal Finder 45-Pathway system with siADAM17 and a miR-708-3p mimic, we identified that miR-708-3p directly regulates its target gene, a disintegrin and metalloproteinase 17 (ADAM17), through a binding site in the 3′ untranslated region, which depends on the GATA/STAT3 signaling pathway. Finally, an miR-708-3p agomir was designed and used to test the therapeutic effects of the miR-708-3p in an animal model. Small-animal imaging technology and other experiments showed that the dynamic image distribution of the miR-708-3p agomir was mainly concentrated in the lungs and could block fibrogenesis. In conclusion, the miR-708-3p–ADAM17 axis aggravates IPF, and miR-708-3p can serve as a potential therapeutic target for IPF.
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64
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Development and endoscopic appearance of colorectal tumors are characterized by the expression profiles of miRNAs. Med Mol Morphol 2018; 51:82-88. [DOI: 10.1007/s00795-018-0186-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Accepted: 03/06/2018] [Indexed: 12/17/2022]
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65
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Clinical utility of miR-143/miR-182 levels in prognosis and risk stratification specificity of BFM-treated childhood acute lymphoblastic leukemia. Ann Hematol 2018; 97:1169-1182. [PMID: 29556721 DOI: 10.1007/s00277-018-3292-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Accepted: 03/05/2018] [Indexed: 12/22/2022]
Abstract
Although childhood acute lymphoblastic leukemia (ALL) is characterized by high remission rates, there are still patients who experience poor response to therapy or toxic effects due to intensive treatment. In the present study, we examined the expression profile of miR-143 and miR-182 in childhood ALL and evaluated their clinical significance for patients receiving Berlin-Frankfurt-Münster (BFM) protocol. Bone marrow specimens from 125 childhood ALL patients upon diagnosis and the end-of-induction (EoI; day 33), as well as from 64 healthy control children undergone RNA extraction, polyadenylation, and reverse transcription. Expression levels of miRNAs were quantified by qPCR analysis. Patients' cytogenetic, immunohistotype and MRD evaluation was performed according to international guidelines. Median follow-up time was 86.0 months (95% CI 74.0-98.0), while patients' mean DFS and OS intervals were 112.0 months (95% CI 104.2-119.8) and 109.2 months (95% CI 101.2-117.3), respectively. Bone marrow levels of miR-143/miR-182 were significantly decreased in childhood ALL patients at diagnosis and increased in more than 90% of patients at the EoI. Patients' survival analysis highlighted that children overexpressing miR-143/miR-182 at the EoI presented significantly higher risk for short-term relapse (log-rank test: p = 0.021; Cox regression: HR = 4.911, p = 0.038) and death (log-rank test: p = 0.028; Cox regression: HR = 4.590, p = 0.046). Finally, the evaluation of the miR-143/miR-182 EoI levels along with the established disease prognostic markers resulted to improved prediction of BFM-treated patients' survival outcome and response to therapy and additionally to superior BFM risk stratification specificity. Concluding, miR-143 and miR-182 could serve as novel prognostic molecular markers for pediatric ALL treated with BFM chemotherapy.
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66
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Minami K, Taniguchi K, Sugito N, Kuranaga Y, Inamoto T, Takahara K, Takai T, Yoshikawa Y, Kiyama S, Akao Y, Azuma H. MiR-145 negatively regulates Warburg effect by silencing KLF4 and PTBP1 in bladder cancer cells. Oncotarget 2018; 8:33064-33077. [PMID: 28380435 PMCID: PMC5464850 DOI: 10.18632/oncotarget.16524] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Accepted: 03/15/2017] [Indexed: 11/29/2022] Open
Abstract
The Warburg effect is a well-known feature in cancer-specific metabolism. We previously reported on the role of microRNA (miR)-145 as a tumor-suppressor in human bladder cancer (BC) cells. In this study, we reveal that miR-145 decreases the Warburg effect by silencing KLF4 in BC cells. The expression levels of miR-145 were significantly lower in clinical BC samples and BC cell lines compared to those in normal tissues and HUC cells. Luciferase assay results showed that miR-145 directly bound to 3′UTR of KLF4, which was shown to be overexpressed in the clinical BC samples using Western blot analysis and immunohistochemistry. Remarkable growth inhibition and apoptosis were induced by the ectopic expression of miR-145 or by the gene silencing of KLF4 (siR-KLF4). Also, Warburg effect-related genes such as PTBP1/PKMs were regulated by the transfection of BC cells with miR-145 or siR-KLF4. These results thus indicate that the miR-145/KLF4/PTBP1/PKMs axis is one of the critical pathways that maintain the Warburg effect in BC carcinogenesis. MiR-145 perturbed the Warburg effect by suppressing the KLF4/PTBP1/PKMs pathway in BC cells, resulting in significant cell growth inhibition.
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Affiliation(s)
- Koichiro Minami
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu 501-1193, Japan.,Department of Urology, Osaka Medical College, Takatsuki, Osaka 569-8686, Japan
| | - Kohei Taniguchi
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu 501-1193, Japan.,Department of General and Gastroenterological Surgery, Osaka Medical College, Takatsuki, Osaka 569-8686, Japan
| | - Nobuhiko Sugito
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu 501-1193, Japan
| | - Yuki Kuranaga
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu 501-1193, Japan
| | - Teruo Inamoto
- Department of Urology, Osaka Medical College, Takatsuki, Osaka 569-8686, Japan
| | - Kiyoshi Takahara
- Department of Urology, Osaka Medical College, Takatsuki, Osaka 569-8686, Japan
| | - Tomoaki Takai
- Department of Urology, Osaka Medical College, Takatsuki, Osaka 569-8686, Japan
| | - Yuki Yoshikawa
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu 501-1193, Japan.,Department of Urology, Osaka Medical College, Takatsuki, Osaka 569-8686, Japan
| | - Satoshi Kiyama
- Department of Urology, Osaka Medical College, Takatsuki, Osaka 569-8686, Japan
| | - Yukihiro Akao
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu 501-1193, Japan
| | - Haruhito Azuma
- Department of Urology, Osaka Medical College, Takatsuki, Osaka 569-8686, Japan
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67
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Fernández-Carrillo C, Pérez-Vilaró G, Díez J, Pérez-Del-Pulgar S. Hepatitis C virus plays with fire and yet avoids getting burned. A review for clinicians on processing bodies and stress granules. Liver Int 2018; 38:388-398. [PMID: 28782251 DOI: 10.1111/liv.13541] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Accepted: 08/02/2017] [Indexed: 02/13/2023]
Abstract
Over the last few years, many reports have defined several types of RNA cell granules composed of proteins and messenger RNA (mRNA) that regulate gene expression on a post-transcriptional level. Processing bodies (P-bodies) and stress granules (SGs) are among the best-known RNA granules, only detectable when they accumulate into very dynamic cytosolic foci. Recently, a tight association has been found between positive-stranded RNA viruses, including hepatitis C virus (HCV), and these granules. The present article offers a comprehensive review on the complex and paradoxical relationship between HCV, P-bodies and SGs from a translational perspective. Despite the fact that components of P-bodies and SGs have assiduously controlled mRNA expression, either by sequestration or degradation, for thousands of years, HCV has learned how to dangerously exploit certain of them for its own benefit in an endless biological war. Thus, HCV has gained the ability to hack ancient host machineries inherited from prokaryotic times. While P-bodies and SGs are crucial to the HCV cycle, in the interferon-free era we still lack detailed knowledge of the mechanisms involved, processes that may underlie the long-term complications of HCV infection.
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Affiliation(s)
| | - Gemma Pérez-Vilaró
- Department of Experimental and Health Sciences, Molecular Virology, Universitat Pompeu Fabra, Barcelona, Spain
| | - Juana Díez
- Department of Experimental and Health Sciences, Molecular Virology, Universitat Pompeu Fabra, Barcelona, Spain
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68
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Cabibi D, Caruso S, Bazan V, Castiglia M, Bronte G, Ingrao S, Fanale D, Cangemi A, Calò V, Listì A, Incorvaia L, Galvano A, Pantuso G, Fiorentino E, Castorina S, Russo A. Analysis of tissue and circulating microRNA expression during metaplastic transformation of the esophagus. Oncotarget 2018; 7:47821-47830. [PMID: 27374102 PMCID: PMC5216981 DOI: 10.18632/oncotarget.10291] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2016] [Accepted: 05/05/2016] [Indexed: 12/19/2022] Open
Abstract
Genetic changes involved in the metaplastic progression from squamous esophageal mucosa toward Barrett's metaplasia and adenocarcinoma are almost unknown. Several evidences suggest that some miRNAs are differentially expressed in Barrett's esophagus (BE) and esophageal adenocarcinoma. Among these, miR-143, miR-145, miR-194, miR-203, miR-205, miR-215 appear to have a key role in metaplasia and neoplastic progression. The aim of this study was to analyze deregulated miRNAs in serum and esophageal mucosal tissue biopsies to identify new biomarkers that could be associated with different stages of esophageal disease. Esophageal mucosal tissue biopsies and blood samples were collected and analyzed for BE diagnosis. Quantitative Real-time PCR was used to compare miRNA expression levels in serum and 60 disease/normal-paired tissues from 30 patients diagnosed with esophagitis, columnar-lined oesophagus (CLO) or BE. MiRNA expression analysis showed that miR-143, miR-145, miR-194 and miR-215 levels were significantly higher, while miR-203 and miR-205 were lower in BE tissues compared with their corresponding normal tissues. Esophageal mucosa analysis of patients with CLO and esophagitis showed that these miRNAs were similarly deregulated but to a lesser extent keeping the same trend and CLO appeared as intermediate step between esophagitis and BE. Analysis on circulating miRNA levels confirmed that miR-194 and miR-215 were significantly upregulated in both BE and CLO compared to esophagitis, while miR-143 was significantly upregulated only in the Barrett group. These findings suggest that miRNAs may be involved in neoplastic/metaplastic progression and miRNA analysis might be useful for progression risk prediction as well as for monitoring of BE/CLO patients.
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Affiliation(s)
- Daniela Cabibi
- Department of Science for Promotion of Health and Mother and Child Care, Section of Human Pathology, University of Palermo, 90127 Palermo, Italy
| | - Stefano Caruso
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, 90127 Palermo, Italy
| | - Viviana Bazan
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, 90127 Palermo, Italy
| | - Marta Castiglia
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, 90127 Palermo, Italy
| | - Giuseppe Bronte
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, 90127 Palermo, Italy
| | - Sabrina Ingrao
- Department of Science for Promotion of Health and Mother and Child Care, Section of Human Pathology, University of Palermo, 90127 Palermo, Italy
| | - Daniele Fanale
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, 90127 Palermo, Italy
| | - Antonina Cangemi
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, 90127 Palermo, Italy
| | - Valentina Calò
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, 90127 Palermo, Italy
| | - Angela Listì
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, 90127 Palermo, Italy
| | - Lorena Incorvaia
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, 90127 Palermo, Italy
| | - Antonio Galvano
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, 90127 Palermo, Italy
| | - Gianni Pantuso
- Department of Surgical, Oncological and Oral Sciences, Section of Surgical Oncology, University of Palermo, 90127 Palermo, Italy
| | - Eugenio Fiorentino
- Department of Surgical, Oncological and Oral Sciences, Section of Surgical Oncology, University of Palermo, 90127 Palermo, Italy
| | - Sergio Castorina
- Fondazione Mediterranea, "G.B. Morgagni", Department of Biomedical and Biotechnological Sciences, University of Catania, 95100 Catania, Italy
| | - Antonio Russo
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, 90127 Palermo, Italy
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69
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Zhou X, Mao Y, Zhu J, Meng F, Chen Q, Tao L, Li R, Fu F, Liu C, Hu Y, Wang W, Zhang H, Hua D, Chen W, Zhang X. TGF-β1 promotes colorectal cancer immune escape by elevating B7-H3 and B7-H4 via the miR-155/miR-143 axis. Oncotarget 2018; 7:67196-67211. [PMID: 27626488 PMCID: PMC5341868 DOI: 10.18632/oncotarget.11950] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Accepted: 09/02/2016] [Indexed: 12/11/2022] Open
Abstract
Transforming growth factor-beta 1 (TGF-β1) suppresses T cell function, promoting tumor immune escape. Yet, whether the depression of TGF-β1 on T cell function is mediated by co-inhibitory molecules B7-H3 and B7-H4 remains largely unclear. Here, we demonstrated that TGF-β1 elevated the expression of miR-155 in colorectal cancer cells through SMAD3 and SMAD4. The upregulated miR-155 attenuated miR-143 by inhibiting its direct target, the transcription factor CEBPB. Consequently, the direct target genes of miR-143, B7-H3 and B7-H4, were augmented in the cytoplasm and membrane of tumor cells. Over-expression of B7-H3 and B7-H4 in HCT-116 cells induced T cells to secrete TGF-β1 and the immunosuppressive cytokines IL-2, IL-6, and IL-17. Restoration of miR-143 inhibited the growth of HCT-116 xenograft tumors in mice, and also repressed the expression of B7-H3 and B7-H4 in the tumors. Thus, this study reveals the mechanism by which TGF-β1 leads to T cell-mediated tumor evasion through an increase in B7-H3 and B7-H4 expression.
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Affiliation(s)
- Xinru Zhou
- Center for Drug Metabolism and Pharmacokinetics, College of Pharmaceutical Sciences, Soochow University, Suzhou, China
| | - Yong Mao
- Department of Oncology, The Fourth Affiliated Hospital of Soochow University, Wuxi, China
| | - Jianjie Zhu
- Center for Drug Metabolism and Pharmacokinetics, College of Pharmaceutical Sciences, Soochow University, Suzhou, China
| | - Fanyi Meng
- Center for Drug Metabolism and Pharmacokinetics, College of Pharmaceutical Sciences, Soochow University, Suzhou, China
| | - Qi Chen
- Center for Drug Metabolism and Pharmacokinetics, College of Pharmaceutical Sciences, Soochow University, Suzhou, China
| | - Lihua Tao
- Department of Gastroenterology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Rui Li
- Department of Gastroenterology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Fengqing Fu
- Jiangsu Institute of Clinical Immunology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Cuiping Liu
- Jiangsu Institute of Clinical Immunology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Yuanjia Hu
- Institute of Chinese Medical Sciences, State Key Laboratory of Quality Research in Chinese Medicine, University of Macau, Macau, China
| | - Weipeng Wang
- Center for Drug Metabolism and Pharmacokinetics, College of Pharmaceutical Sciences, Soochow University, Suzhou, China
| | - Hongjian Zhang
- Center for Drug Metabolism and Pharmacokinetics, College of Pharmaceutical Sciences, Soochow University, Suzhou, China
| | - Dong Hua
- Department of Oncology, The Fourth Affiliated Hospital of Soochow University, Wuxi, China
| | - Weichang Chen
- Department of Gastroenterology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Xueguang Zhang
- Jiangsu Institute of Clinical Immunology, The First Affiliated Hospital of Soochow University, Suzhou, China
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70
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Taniguchi K, Iwatsuki A, Sugito N, Shinohara H, Kuranaga Y, Oshikawa Y, Tajirika T, Futamura M, Yoshida K, Uchiyama K, Akao Y. Oncogene RNA helicase DDX6 promotes the process of c-Myc expression in gastric cancer cells. Mol Carcinog 2018; 57:579-589. [PMID: 29314290 DOI: 10.1002/mc.22781] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2017] [Revised: 12/06/2017] [Accepted: 01/02/2018] [Indexed: 11/08/2022]
Abstract
Human DEAD-box RNA helicase gene DDX6 was cloned from B-cell lymphoma cell line RC-K8. Previously, we reported that DDX6 acts as oncogene in several cancers such as colorectal cancer and hepatocellular carcinoma. However, the detailed mechanism of DDX6 action in carcinogenesis is largely unknown. In this study, we examined the functions of DDX6 in clinical gastric cancer (GC) samples and GC cells. DDX6 protein expression levels of cancer samples were higher than those of the adjacent normal tissues in 25 clinical GC samples (median value: 1.4 times higher). Also, the results of an RNA immunoprecipitation-assay (RIP-assay) showed that DDX6 associated with c-Myc mRNA. Moreover, enforced overexpression of DDX6 promoted both mRNA and protein expression of c-Myc in GC cells. On the other hand, the gene silencing of DDX6 induced growth suppression through down-regulation of c-Myc in GC cells grown in either two or three dimensions. Furthermore, c-Myc mRNA expression levels of cancer samples were higher than those of the adjacent normal tissues in DDX6 up-regulated-GC clinical samples. Our findings in this study suggested that DDX6 acted as oncogene in GC cells through promotion of c-Myc expression by association with the mRNA of c-Myc.
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Affiliation(s)
- Kohei Taniguchi
- Department of General and Gastroenterological Surgery, Osaka Medical College, Osaka, Takatsuki, Japan.,United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu, Japan
| | - Ayako Iwatsuki
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu, Japan
| | - Nobuhiko Sugito
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu, Japan
| | - Haruka Shinohara
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu, Japan
| | - Yuki Kuranaga
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu, Japan
| | - Yuki Oshikawa
- Department of Oncological Surgery, Gifu University School of Medicine, Gifu, Japan
| | - Toshihiro Tajirika
- Department of Oncological Surgery, Gifu University School of Medicine, Gifu, Japan
| | - Manabu Futamura
- Department of Oncological Surgery, Gifu University School of Medicine, Gifu, Japan
| | - Kazuhiro Yoshida
- Department of Oncological Surgery, Gifu University School of Medicine, Gifu, Japan
| | - Kazuhisa Uchiyama
- Department of General and Gastroenterological Surgery, Osaka Medical College, Osaka, Takatsuki, Japan
| | - Yukihiro Akao
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu, Japan
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71
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Guoping M, Ran L, Yanru Q. miR-143 Inhibits Cell Proliferation of Gastric Cancer Cells Through Targeting GATA6. Oncol Res 2018; 26:1023-1029. [PMID: 29321084 PMCID: PMC7844708 DOI: 10.3727/096504018x15151515028670] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Recent studies have suggested that the dysregulation of microRNAs (miRNAs) plays a critical role in the progression of human cancers, including gastric cancer (GC). miR-143 had been reported to function as a tumor suppressor in GC. However, the exact molecular mechanism of how miR-143 participates in GC progression remains to be determined. In this present study, we revealed that the expression of miR-143 was significantly downregulated in human GC tissues and cell lines compared with normal tissues and a normal gastric epithelium cell line. In addition, upregulation of the expression of miR-143 in a GC cell line inhibited cell proliferation and induced cell cycle arrested in the G0/G1 phase. Furthermore, GATA6 was identified as a direct target of miR-143 in GC using the luciferase reporter assay. Upregulation of miR-143 inhibited the expression of GATA6 in GC cell lines. Moreover, the overexpression of GATA6 could attenuate the effect of miR-143 on cell proliferation in the GC cell lines. Collectively, these data indicated that miR-143 plays a tumor suppressor role partly through regulating the expression of GATA6 in GC. Therefore, targeting miR-143 may be a novel therapeutic method for GC.
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Affiliation(s)
- Mao Guoping
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, P.R. China
| | - Liu Ran
- Department of Rheumatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, P.R. China
| | - Qin Yanru
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, P.R. China
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72
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Huang J, He Y, Mcleod HL, Xie Y, Xiao D, Hu H, Chen P, Shen L, Zeng S, Yin X, Ge J, Li L, Tang L, Ma J, Chen Z. miR-302b inhibits tumorigenesis by targeting EphA2 via Wnt/ β-catenin/EMT signaling cascade in gastric cancer. BMC Cancer 2017; 17:886. [PMID: 29273006 PMCID: PMC5741943 DOI: 10.1186/s12885-017-3875-3] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Accepted: 12/04/2017] [Indexed: 02/08/2023] Open
Abstract
Background EphA2 is a crucial oncogene in gastric cancer (GC) development and metastasis, this study aims to identify microRNAs that target it and serve as key regulators of gastric carcinogenesis. Methods We identified several potential microRNAs targeting EphA2 by bioinformatics websites and then analyzed the role of miR-302b in modulating EphA2 in vitro and in vivo of GC, and it’s mechanism. Results Our analysis identified miR-302b, a novel regulator of EphA2, as one of the most significantly downregulated microRNA (miRNA) in GC tissues. Overexpression of miR-302b impaired GC cell migratory and invasive properties robustly and suppressed cell proliferation by arresting cells at G0–G1 phase in vitro. miR-302b exhibited anti-tumor activity by reversing EphA2 regulation, which relayed a signaling transduction cascade that attenuated the functions of N-cadherin, β-catenin, and Snail (markers of Wnt/β-catenin and epithelial-mesenchymal transition, EMT). This modulation of EphA2 also had distinct effects on cell proliferation and migration in GC in vivo. Conclusions miR-302b serves as a critical suppressor of GC cell tumorigenesis and metastasis by targeting the EphA2/Wnt/β-catenin/EMT pathway. Electronic supplementary material The online version of this article (10.1186/s12885-017-3875-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Jin Huang
- Department of Oncology, Xiangya Hospital, Central South University, Changsha, 410008, China
| | - Yijing He
- Department of Dermatology, XiangYa Hospital, Central South University, Changsha, 410008, China
| | - Howard L Mcleod
- Department of Clinical Pharmacology, XiangYa Hospital, Central South University, Changsha, 410008, China.,Hunan Key Laboratory of Pharmacogenetics, Changsha, 410008, China.,Moffitt Cancer Center, DeBartolo Family Personalized Medicine Institute, Tampa, FL, 33612, USA
| | - Yanchun Xie
- Department of Oncology, Xiangya Hospital, Central South University, Changsha, 410008, China
| | - Desheng Xiao
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, 410008, China
| | - Huabin Hu
- The Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510655, China
| | - Pan Chen
- Department of Hepatobiliary Surgery, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, 410013, China
| | - Liangfang Shen
- Department of Oncology, Xiangya Hospital, Central South University, Changsha, 410008, China
| | - Shan Zeng
- Department of Oncology, Xiangya Hospital, Central South University, Changsha, 410008, China
| | - Xianli Yin
- Department of gastroenterology and urology, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, 410013, China
| | - Jie Ge
- Department of General Surgery, Xiangya Hospital of Central South University, No.87 Xiangya Road, Changsha, 410008, People's Republic of China
| | - Li Li
- Department of Oncology, Xiangya Hospital, Central South University, Changsha, 410008, China
| | - Lanhua Tang
- Department of Oncology, Xiangya Hospital, Central South University, Changsha, 410008, China
| | - Jian Ma
- Cancer Research Institute, Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Central South University, No.138 Tongzipo Road, Changsha, China.
| | - Zihua Chen
- Department of General Surgery, Xiangya Hospital of Central South University, No.87 Xiangya Road, Changsha, 410008, People's Republic of China.
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Kim MK, Lee SK, Park JH, Lee JH, Yun BH, Park JH, Seo SK, Cho S, Choi YS. Ginsenoside Rg3 Decreases Fibrotic and Invasive Nature of Endometriosis by Modulating miRNA-27b: In Vitro and In Vivo Studies. Sci Rep 2017; 7:17670. [PMID: 29247225 PMCID: PMC5732249 DOI: 10.1038/s41598-017-17956-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Accepted: 12/04/2017] [Indexed: 01/25/2023] Open
Abstract
This research aimed to evaluate the potential therapeutic effects of Rg3 on endometriosis and identify target miRNAs. We designed an in vitro study using human endometrial stromal cells (HESCs) obtained from patients with endometriosis and an in vivo study using mouse models. HESCs were treated with Rg3-enhanced red ginseng extract (Rg3E); real-time PCR and microarray profiling, transfection, and western blot were performed. Mouse endometriosis models were developed and supplemented with Rg3E for 8 weeks. Gross lesion size and fibrotic character were analyzed in the mouse models. RNA levels of Ki-67, col-1, CTGF, fibronectin, TGF-β1, MMP2 and MMP9 significantly decreased in HESCs after Rg3E treatment. Microarray analysis revealed downregulation of miR-27b-3p, which is related to fibrosis modulation. Expression of miR-27b-3p was significantly higher in HESCs from patients with endometriosis than that of controls, and Rg3E treatment significantly decreased its expression; the contraction and migration assay revealed significant reductions in both fibrosis and migration potential in Rg3E-treated HESCs from endometriosis patients. A decrease in size and fibrotic character of endometrial lesions from the Rg3E groups was observed in vivo. In conclusion, Rg3 effectively altered fibrotic properties of HESCs from patients with endometriosis, which is likely associated with miR-27b-3p modulation.
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Affiliation(s)
- Min Kyoung Kim
- Department of Obstetrics and Gynecology, Severance Hospital, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
- Institute of Women's Life Medical Science, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
- Department of Obstetrics and Gynecology, Fertility Center of CHA Gangnam Medical Center, CHA University, Seoul, 06125, Republic of Korea
| | - Seung Kyun Lee
- Institute of Women's Life Medical Science, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
- Department of Obstetrics and Gynecology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, 06273, Republic of Korea
| | - Ji Hyun Park
- Institute of Women's Life Medical Science, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
- Department of Obstetrics and Gynecology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, 06273, Republic of Korea
| | - Jae Hoon Lee
- Department of Obstetrics and Gynecology, Severance Hospital, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
- Institute of Women's Life Medical Science, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Bo Hyon Yun
- Department of Obstetrics and Gynecology, Severance Hospital, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
- Institute of Women's Life Medical Science, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Joo Hyun Park
- Institute of Women's Life Medical Science, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
- Department of Obstetrics and Gynecology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, 06273, Republic of Korea
| | - Seok Kyo Seo
- Department of Obstetrics and Gynecology, Severance Hospital, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
- Institute of Women's Life Medical Science, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - SiHyun Cho
- Institute of Women's Life Medical Science, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea.
- Department of Obstetrics and Gynecology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, 06273, Republic of Korea.
| | - Young Sik Choi
- Department of Obstetrics and Gynecology, Severance Hospital, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
- Institute of Women's Life Medical Science, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
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Metformin alleviates nickel-induced autophagy and apoptosis via inhibition of hexokinase-2, activating lipocalin-2, in human bronchial epithelial cells. Oncotarget 2017; 8:105536-105552. [PMID: 29285270 PMCID: PMC5739657 DOI: 10.18632/oncotarget.22317] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Accepted: 06/29/2017] [Indexed: 02/07/2023] Open
Abstract
Autophagy is an intracellular recycling and degradation process for regulating tumor progression, survival and drug resistance. Nickel compounds have been identified as human carcinogens. However, the role of nickel-induced autophagy in lung carcinogenesis has not yet been fully elucidated. In this study, we determined that hexokinase 2 (HK2), which phosphorylates glucose and regulates autophagy, is the key mediator in nickel-induced autophagy in lung bronchial epithelial cells. We attempted to investigate the effects of the antidiabetic drug metformin on HK2 expression and lung cancer chemoprevention. Our results showed that metformin decreases nickel-induced autophagy and activation of apoptosis through inhibition of HK2 gene, protein and activity. Furthermore, we demonstrated that lipocalin 2 (LCN2), which is released by neutrophils at sites of infection and inflammation is involved in HK2-driven autophagy pathway. Knockdown of endogenous HK2 and LCN2 by shRNA reduced nickel-elicited autophagy and apoptosis, illustrating that metabolic alteration and inflammatory action are important in nickel-elicited carcinogenesis. We also determined the association between nickel-induced autophagy and apoptosis. Inhibition of nickel-induced autophagy abolished apoptotic cell death in chloroquine-treated, shLC3 Beas-2B cells and Atg5−/− MFFs. From TGCA database and immunohistochemistry analysis, HK2 and LCN2 expression increased in lung squamous cell carcinoma and their related adjacent normal tissues. Taken together, our results demonstrated that metformin alleviates NiCl2-induced autophagy and apoptosis via HK2-driven LCN2 activation in human bronchial epithelial cells. This novel mechanism provides a strategy for targeting nickel-elicited lung cancer progression, as well as for preventing HK2 cumulative damage triggered by environmental carcinogens.
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Yang W, Ma J, Zhou W, Cao B, Zhou X, Yang Z, Zhang H, Zhao Q, Fan D, Hong L. Molecular mechanisms and theranostic potential of miRNAs in drug resistance of gastric cancer. Expert Opin Ther Targets 2017; 21:1063-1075. [PMID: 28994330 DOI: 10.1080/14728222.2017.1389900] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
INTRODUCTION Systemic chemotherapy is a curative approach to inhibit gastric cancer cells proliferation. Despite the great progress in anti-cancer treatment achieved during the last decades, drug resistance and treatment refractoriness still extensively persists. Recently, accumulating studies have highlighted the role of miRNAs in drug resistance of gastric cancers by modulating some drug resistance-related proteins and genes expression. Pre-clinical reports indicate that miRNAs might serve as ideal biomarkers and potential targets, thus holding great promise for developing targeted therapy and personalized treatment for the patients with gastric cancer. Areas covered: This review provide a comprehensive overview of the current advances of miRNAs and molecular mechanisms underlying miRNA-mediated drug resistance in gastric cancer. We particularly focus on the potential values of drug resistance-related miRNAs as biomarkers and novel targets in gastric cancer therapy and envisage the future research developments of these miRNAs and challenges in translating the new findings into clinical applications. Expert opinion: Although the concrete mechanisms of miRNAs in drug resistance of gastric cancer have not been fully clarified, miRNA may be a promising theranostic approach. Further studies are still needed to facilitate the clinical applications of miRNAs in drug resistant gastric cancer.
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Affiliation(s)
- Wanli Yang
- a State Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases and Xijing Hospital of Digestive Diseases , Fourth Military Medical University , Xi'an , China
| | - Jiaojiao Ma
- a State Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases and Xijing Hospital of Digestive Diseases , Fourth Military Medical University , Xi'an , China
| | - Wei Zhou
- a State Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases and Xijing Hospital of Digestive Diseases , Fourth Military Medical University , Xi'an , China
| | - Bo Cao
- b The First Brigade of Student , Fourth Military Medical University , Xi'an , China
| | - Xin Zhou
- b The First Brigade of Student , Fourth Military Medical University , Xi'an , China
| | - Zhiping Yang
- a State Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases and Xijing Hospital of Digestive Diseases , Fourth Military Medical University , Xi'an , China
| | - Hongwei Zhang
- c Department of Digestive Surgery, Xijing Hospital , Fourth Military Medical University , Xi'an , China
| | - Qingchuan Zhao
- c Department of Digestive Surgery, Xijing Hospital , Fourth Military Medical University , Xi'an , China
| | | | - Liu Hong
- a State Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases and Xijing Hospital of Digestive Diseases , Fourth Military Medical University , Xi'an , China
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Zhao H, Cheng Y, Dong S, Du J, Gao F, Sun D, Cui J, Ni J, Cai J. Down regulation of miR-143 promotes radiation - Induced thymic lymphoma by targeting B7H1. Toxicol Lett 2017; 280:116-124. [PMID: 28736328 DOI: 10.1016/j.toxlet.2017.07.891] [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] [Received: 05/23/2017] [Revised: 07/12/2017] [Accepted: 07/17/2017] [Indexed: 01/16/2023]
Abstract
MicroRNA-143 has been implicated in tumor metastasis by directly targeting Bcl-2, and microRNA-143 expression is decreased in several human tumors. However, the expression and targets of miR-143 in radiation carcinogenesis remain unclear. We found that the expression of miR-143 is down-regulated and the expression of B7H1 (Pdcd1) is up-regulated in radiation-induced thymic lymphoma model in BALB/c mice. Additionally, overexpression of miR-143 strongly inhibited cell proliferation and increased cell apoptosis and its down-regulation promoted cell proliferation and reduced cell apoptosis. We also determined that there is an inverse correlation between miR-143 expression and B7H1 protein expression in radiation-induced thymic lymphoma samples, and miR-143 targets B7H1 in a 3'UTR-dependent manner. In addition, we found that adenovirus over-expression of pre-miR-143 reduced tumorigenesis in vivo. Finally, we conclude that down-regulated expression of miR-143 and up-regulation of its direct target B7H1 may indicate a novel therapeutic method for radiation-induced thymic lymphoma by increased expression of miR-143 or inhibition of B7H1.
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Affiliation(s)
- Hainan Zhao
- Department of Radiation Medicine, Faculty of Naval Medicine, Second Military Medical University, Shanghai 200433, PR China
| | - Ying Cheng
- Department of Radiation Medicine, Faculty of Naval Medicine, Second Military Medical University, Shanghai 200433, PR China
| | - Suhe Dong
- Department of Radiation Medicine, Faculty of Naval Medicine, Second Military Medical University, Shanghai 200433, PR China
| | - Jicong Du
- Department of Radiation Medicine, Faculty of Naval Medicine, Second Military Medical University, Shanghai 200433, PR China
| | - Fu Gao
- Department of Radiation Medicine, Faculty of Naval Medicine, Second Military Medical University, Shanghai 200433, PR China
| | - Ding Sun
- Department of Radiation Medicine, Faculty of Naval Medicine, Second Military Medical University, Shanghai 200433, PR China
| | - Jianguo Cui
- Department of Radiation Medicine, Faculty of Naval Medicine, Second Military Medical University, Shanghai 200433, PR China
| | - Jin Ni
- Department of Radiation Medicine, Faculty of Naval Medicine, Second Military Medical University, Shanghai 200433, PR China.
| | - Jianming Cai
- Department of Radiation Medicine, Faculty of Naval Medicine, Second Military Medical University, Shanghai 200433, PR China.
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77
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Yu Y, Nangia-Makker P, Farhana L, Majumdar APN. A novel mechanism of lncRNA and miRNA interaction: CCAT2 regulates miR-145 expression by suppressing its maturation process in colon cancer cells. Mol Cancer 2017; 16:155. [PMID: 28964256 PMCID: PMC5622467 DOI: 10.1186/s12943-017-0725-5] [Citation(s) in RCA: 147] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Accepted: 09/20/2017] [Indexed: 11/10/2022] Open
Abstract
Background Although both long and micro RNAs are emerging as important functional components in colorectal cancer (CRC) progression and metastasis, the mechanism of their interaction remains poorly understood. CCAT2 (Colon cancer-associated transcript-2), a long noncoding RNA (lncRNA), has been reported to be over-expressed in CRC and is found to promote tumor growth. miRNAs, a class of naturally occurring short RNAs negatively control the expression of target genes by cleaving mRNA or through translation repression. Recently, we reported that miR-145 and miR-21 cooperate to regulate colon cancer stem cell (CSC) proliferation and differentiation. Considering that CCAT2 is mainly located in the nucleus and miRNA maturation process begins in the nucleus, we hypothesize that CCAT2 selectively blocks miR-145 maturation process, resulting in decreased mature miR-145 affecting colon CSC proliferation and differentiation. Methods The levels of CCAT2 were manipulated by transfection of CCAT2 expression plasmid or knockdown by siRNA or by CRISPR/Cas9. Quantitative RT-PCR was performed to examine the expression of CCAT2 and pri-, pre- and mature miR-145/21. Fluorescence in situ hybridization (FISH) was used to visualize CCAT2 in the cells. In vitro processing of pri-miRNA-145 was performed using T7 RNA polymerase and recombinant human Dicer. Results We have observed that modulated expression of CCAT2 regulates the expression of miR-145 in colon cancer HCT-116 and HT-29 cells. Knockout of CCAT2 increases miR-145 and negatively regulates miR-21 in HCT-116 cells, impairs proliferation and differentiation. In contrast, stable up-regulation of CCAT2 decreases mature miR-145 and increases the expression of several CSC markers in colon cancer cells. We have also observed that CCAT2 is enriched in the nucleus and correlates with the expression of pre-miR-145 but not pre-miR-21 in HCT-116 cells. These results indicate CCAT2 selectively blocks miR-145 maturation by inhibiting pre-miR-145 export to cytoplasm. Further, we revealed that CCAT2 blocks cleavage of pre-miR-145 by Dicer in vitro. Conclusions Our results identify CCAT2 as a negative regulator of miRNA-145 biogenesis, and expose a novel mechanism of lncRNA-miRNA crosstalk. Electronic supplementary material The online version of this article (10.1186/s12943-017-0725-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Yingjie Yu
- Department of Veterans Affairs Medical Center, 4646 John R, Detroit, MI, 48201, USA. .,Departments of Internal Medicine, Wayne State University, Detroit, MI, 48201, USA.
| | - Pratima Nangia-Makker
- Department of Veterans Affairs Medical Center, 4646 John R, Detroit, MI, 48201, USA.,Karmanos Cancer Institute, Detroit, MI, 48201, USA.,Departments of Internal Medicine, Wayne State University, Detroit, MI, 48201, USA
| | - Lulu Farhana
- Department of Veterans Affairs Medical Center, 4646 John R, Detroit, MI, 48201, USA.,Departments of Internal Medicine, Wayne State University, Detroit, MI, 48201, USA
| | - Adhip P N Majumdar
- Department of Veterans Affairs Medical Center, 4646 John R, Detroit, MI, 48201, USA. .,Karmanos Cancer Institute, Detroit, MI, 48201, USA. .,Departments of Internal Medicine, Wayne State University, Detroit, MI, 48201, USA.
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78
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Zhang Q, Feng Y, Liu P, Yang J. MiR-143 inhibits cell proliferation and invasion by targeting DNMT3A in gastric cancer. Tumour Biol 2017; 39:1010428317711312. [PMID: 28718369 DOI: 10.1177/1010428317711312] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Increasing evidence has suggested that MircroRNAs (miRNAs) dysregulated in pathogenesis and tumorigenicity in human cancers including gastric cancer (GC). MiR-143 had been reported to function as tumor suppressor in GC progression, however, the underlying function of miR-143 in GC still need to be well known. In the study, we revealed that miR-143 was significantly down-regulated in GC cell lines. Upregulation of miR-143 inhibited cell proliferation, invasion, S phase cell proportion and cell cycle related protein levels of Cyclin D1, CDK4 and CDK6 in GC. Furthermore, luciferase reporter assays demonstrated that DNMT3A was a direct target of miR-143 and Upregulation of miR-143 inhibited the DNMT3A mRNA and protein expression levels in GC cells. Moreover, we demonstrated that DNMT3A knockdown rescued the promoting effect of miR-143 inhibitor on cell proliferation in GC. Thus, these results demonstrated that miR-143 targeted DNMT3A in GC cells and inhibit GC tumorigenesis and progression, which may provide a novel therapeutic target of GC.
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Affiliation(s)
- Quan Zhang
- 1 Department of Oncology, The First Affiliated Hospital, Nanjing Medical University, Nanjing, China.,2 Department of Radiation Oncology, Huai'an First People's Hospital, Nanjing Medical University, Huai'an, China
| | - Yong Feng
- 1 Department of Oncology, The First Affiliated Hospital, Nanjing Medical University, Nanjing, China.,3 Department of Oncology, Huai'an First People's Hospital, Nanjing Medical University, Huai'an, China
| | - Ping Liu
- 1 Department of Oncology, The First Affiliated Hospital, Nanjing Medical University, Nanjing, China
| | - Jing Yang
- 4 Department of Cardiology, Huai'an First People's Hospital, Nanjing Medical University, Huai'an, China
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79
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Shinohara H, Kuranaga Y, Kumazaki M, Sugito N, Yoshikawa Y, Takai T, Taniguchi K, Ito Y, Akao Y. Regulated Polarization of Tumor-Associated Macrophages by miR-145 via Colorectal Cancer-Derived Extracellular Vesicles. THE JOURNAL OF IMMUNOLOGY 2017; 199:1505-1515. [PMID: 28696255 DOI: 10.4049/jimmunol.1700167] [Citation(s) in RCA: 127] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Accepted: 06/21/2017] [Indexed: 01/02/2023]
Abstract
Macrophages are polarized into functional classically activated and alternatively activated (M2) phenotypes depending on their microenvironment, and these cells play an important role in the immune system. M2-like polarization of tumor-associated macrophages (TAMs) is activated by various secretions from cancer cells; however, the interaction between cancer cells and TAMs is not well understood. Recent studies showed that cancer cell-derived extracellular vesicles (EVs) contribute to tumor development and modulation of the tumor microenvironment. In the current study, we investigated colorectal cancer-derived EVs containing miR-145 with respect to the polarization of TAMs. Colorectal cancer cells positively secreted miR-145 via EVs, which were taken up by macrophage-like cells. Interestingly, colorectal cancer-derived EVs polarized macrophage-like cells into the M2-like phenotype through the downregulation of histone deacetylase 11 An in vivo study showed that EV-treated macrophages caused significant enlargement of the tumor volumes. These findings suggest that colorectal cancer cells use miR-145 within EVs to efficiently modulate M2-like macrophage polarization and tumor progression.
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Affiliation(s)
- Haruka Shinohara
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu 501-1193, Japan;
| | - Yuki Kuranaga
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu 501-1193, Japan
| | - Minami Kumazaki
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu 501-1193, Japan
| | - Nobuhiko Sugito
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu 501-1193, Japan
| | - Yuki Yoshikawa
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu 501-1193, Japan
| | - Tomoaki Takai
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu 501-1193, Japan
| | - Kohei Taniguchi
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu 501-1193, Japan.,Department of General and Gastroenterological Surgery, Osaka Medical College, Takatsuki, Osaka 569-8686, Japan; and
| | - Yuko Ito
- Department of Anatomy and Cell Biology, Osaka Medical College, Takatsuki, Osaka 569-8686, Japan
| | - Yukihiro Akao
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu 501-1193, Japan
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80
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Duan X, Bai J, Wei J, Li Z, Liu X, Xu G. MicroRNA-508-5p suppresses metastasis in human gastric cancer by targeting S-phase kinase‑associated protein 2. Mol Med Rep 2017. [PMID: 28627698 DOI: 10.3892/mmr.2017.6793] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
S-phase kinase-associated protein 2 (SKP2), a potent oncogene was revealed to be upregulated in gastric cancer (GC) tissue samples, in which SKP2 was inversely correlated with microRNA (miR)‑508‑5p transcripts. In present study, the functional effect of miR‑508‑5p on SKP2 and its metastatic potential were investigated in SGC‑7901 GC cells. Significant downregulation of the miR‑508‑5p transcript was associated with the progression of GC. Furthermore, the overexpression of miR‑508‑5p was demonstrated to inhibit the proliferation, migration and invasion of SGC‑7901 cells, as well as induced cell apoptosis and cell cycle arrest at the G0/G1 phase in vitro. The overexpression of miR‑508‑5p was able to downregulate the expression of the SKP2 oncogene, through a mechanism by which miR‑508‑5p directly targeted the SKP2 gene. Thus, regulating transcriptional and post‑transcriptional SKP2 expression, as demonstrated using luciferase reporter assays, reverse transcription‑quantitative polymerase chain reaction analysis and immunoblotting assays. The results of the present study identified that miR‑508‑5p functionally affects the SKP2 gene and reduces metastatic potential in GC, suggesting a novel role of miR‑508‑5p in the regulation of SKP2 and cell cycle.
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Affiliation(s)
- Xiangguo Duan
- Ningxia Key Laboratory of Clinical and Pathogenic Microbiology, General Hospital of Ningxia Medical University, Yinchuan, Ningxia 750004, P.R. China
| | - Jing Bai
- Department of Laboratory Medicine, General Hospital of Ningxia Medical University, Yinchuan, Ningxia 750004, P.R. China
| | - Jun Wei
- Ningxia Key Laboratory of Clinical and Pathogenic Microbiology, General Hospital of Ningxia Medical University, Yinchuan, Ningxia 750004, P.R. China
| | - Zhenhao Li
- Department of Medical Laboratory, School of Clinical Medicine, Ningxia Medical University, Yinchuan, Ningxia 750004, P.R. China
| | - Xinlan Liu
- Department of Medical Laboratory, School of Clinical Medicine, Ningxia Medical University, Yinchuan, Ningxia 750004, P.R. China
| | - Guangxian Xu
- Ningxia Key Laboratory of Clinical and Pathogenic Microbiology, General Hospital of Ningxia Medical University, Yinchuan, Ningxia 750004, P.R. China
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Hu Y, Ma Z, He Y, Liu W, Su Y, Tang Z. PART-1 functions as a competitive endogenous RNA for promoting tumor progression by sponging miR-143 in colorectal cancer. Biochem Biophys Res Commun 2017; 490:317-323. [PMID: 28619512 DOI: 10.1016/j.bbrc.2017.06.042] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Accepted: 06/11/2017] [Indexed: 01/22/2023]
Abstract
LncRNAs were altered in several cancers and played a crucial role in various biological activities and progressions of different diseases, including proliferation, chemical resistance, and metastasis. In the present study, we revealed that prostrate androgen-regulated transcript-1 (PART-1) was highly expressed in colorectal cancer cells and tissues, and knockdown of PART-1 suppressed cell proliferation and metastasis, both in vitro and in vivo. In addition, PART-1 functioned as a ceRNA of DNMT3A, by sponging miR-143. Finally,PART-1 induced tumor progression by regulating DNMT3A.
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Affiliation(s)
- Yongbo Hu
- Department of General Surgery, Xiantao First People's Hospital Affiliated to Yangtze University, Xiantao, Hubei, China
| | - Zhen Ma
- Department of General Surgery, Xiantao First People's Hospital Affiliated to Yangtze University, Xiantao, Hubei, China
| | - Yiming He
- Department of General Surgery, Xiantao First People's Hospital Affiliated to Yangtze University, Xiantao, Hubei, China
| | - Wei Liu
- Department of General Surgery, Xiantao First People's Hospital Affiliated to Yangtze University, Xiantao, Hubei, China
| | - Yu Su
- Department of General Surgery, Xiantao First People's Hospital Affiliated to Yangtze University, Xiantao, Hubei, China
| | - Zongbin Tang
- Department of General Surgery, Xiantao First People's Hospital Affiliated to Yangtze University, Xiantao, Hubei, China.
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Jiang X, Wang W, Yang Y, Du L, Yang X, Wang L, Zheng G, Duan W, Wang R, Zhang X, Wang L, Chen X, Wang C. Identification of circulating microRNA signatures as potential noninvasive biomarkers for prediction and prognosis of lymph node metastasis in gastric cancer. Oncotarget 2017; 8:65132-65142. [PMID: 29029418 PMCID: PMC5630318 DOI: 10.18632/oncotarget.17789] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Accepted: 04/05/2017] [Indexed: 12/12/2022] Open
Abstract
Circulating microRNAs (miRNAs) are emerging as novel noninvasive biomarkers for prediction of lymph node metastasis (LNM) in cancer. The aim of this study was to identify serum miRNA signatures for prediction and prognosis of LNM in gastric cancer (GC). MiSeq sequencing was performed for an initial screening of serum miRNAs in 10 GC patients with LNM, 10 patients without LNM and 10 healthy controls. Reverse transcription quantitative real-time PCR was applied to confirm concentration of candidate miRNAs using a training cohort (n = 279) and a validation cohort (n = 180). We identified a four-miRNA panel (miR-501-3p, miR-143-3p, miR-451a, miR-146a) by multivariate logistic regression model that provided high predictive accuracy for LNM with an area under the receiver operating characteristic curve (AUC) of 0.891 (95% CI, 0.840 to 0.930) in training set. Prospective evaluation of this panel revealed an AUC of 0.822 (95% CI, 0.758 to 0.875, specificity = 87.78%, sensitivity = 63.33%) in validation set. Moreover, Kaplan-Meier analysis showed that LNM patients with low miR-451a and miR-146a levels had worse overall survival (OS) (p < 0.05). In Cox regression analysis, miR-451a was independently associated with OS of LNM (p = 0.028). Our results suggested that use of serum miRNAs seems promising in estimating the probability GC patients harbor LNM and providing prognostic information for LNM.
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Affiliation(s)
- Xiumei Jiang
- Department of Clinical Laboratory, The Second Hospital of Shandong University, Jinan, 250033, Shandong Province, China
| | - Wenfei Wang
- Humanistic Medicine Research Center, Shandong University, Jinan, 250012, Shandong Province, China
| | - Yongmei Yang
- Department of Clinical Laboratory, Qilu Hospital, Shandong University, Jinan, 250012, Shandong Province, China
| | - Lutao Du
- Department of Clinical Laboratory, Qilu Hospital, Shandong University, Jinan, 250012, Shandong Province, China
| | - Xiaoyun Yang
- Department of Clinical Laboratory, Qilu Hospital, Shandong University, Jinan, 250012, Shandong Province, China
| | - Lili Wang
- Department of Clinical Laboratory, Qilu Hospital, Shandong University, Jinan, 250012, Shandong Province, China
| | - Guixi Zheng
- Department of Clinical Laboratory, Qilu Hospital, Shandong University, Jinan, 250012, Shandong Province, China
| | - Weili Duan
- Department of Clinical Laboratory, The Second Hospital of Shandong University, Jinan, 250033, Shandong Province, China
| | - Rui Wang
- Department of Clinical Laboratory, The Second Hospital of Shandong University, Jinan, 250033, Shandong Province, China
| | - Xin Zhang
- Department of Clinical Laboratory, Qilu Hospital, Shandong University, Jinan, 250012, Shandong Province, China
| | - Lishui Wang
- Department of Clinical Laboratory, Qilu Hospital, Shandong University, Jinan, 250012, Shandong Province, China
| | - Xiaoyang Chen
- Humanistic Medicine Research Center, Shandong University, Jinan, 250012, Shandong Province, China
| | - Chuanxin Wang
- Department of Clinical Laboratory, The Second Hospital of Shandong University, Jinan, 250033, Shandong Province, China
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Gao W, Sun W, Yin J, Lv X, Bao J, Yu J, Wang L, Jin C, Hu L. Screening candidate microRNAs (miRNAs) in different lambskin hair follicles in Hu sheep. PLoS One 2017; 12:e0176532. [PMID: 28464030 PMCID: PMC5413071 DOI: 10.1371/journal.pone.0176532] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Accepted: 04/12/2017] [Indexed: 12/31/2022] Open
Abstract
Hu sheep lambskin is a unique white lambskin from China that exhibits three types of flower patterns, including small waves, medium waves, and large waves, with small waves considered the best quality. However, our understanding of the molecular mechanism underlying flower pattern formation in Hu sheep lambskin is limited. The aim of the present study was to further explore the relevance between candidate microRNAs (miRNAs) and developmental characteristics of hair follicles and screen miRNAs for later functional validation. Herein, we employed Illumina Hiseq 2500 to identify differentially expressed miRNAs in hair follicles of different flower patterns with small, medium, and large waves to construct a comprehensive sequence database on the mechanism of hair follicle development. Paraffin sections of lambskin tissue were prepared to assess the structure of different hair follicles. Expression levels of candidate miRNAs in different flower patterns were analyzed by relative quantitation using real-time PCR, combined with histological observation and micro-observation technologies, and the correlation between expression levels of candidate miRNAs and histological properties of hair follicles was analyzed by using SPSS 17.0. A total of 522 differentially expressed miRNAs were identified, and RNA-seq analysis detected 7,266 target genes in different groups of flower patterns. Gene ontological analysis indicated these target genes were mainly involved in cell proliferation, differentiation, growth, apoptosis, and ion transport, and 14 miRNAs, including miR-143, miR-10a, and let-7 were screened as candidate miRNAs in Hu sheep hair follicle growth and development. In the same field of vision, variance analysis showed that the number of secondary follicles in small waves was significantly larger than that in large and medium waves (P<0.01); the diameter of the primary and secondary follicles in large waves was respectively larger than those in medium and small waves (P<0.01). Combined with correlation analysis between miRNA expression and histological properties of hair follicles, highly significant differences in miRNA-143 expression levels between large and small waves were observed (P<0.01), and significant differences in the miRNA-10a expression levels between large and small waves (P<0.05) and in let-7i expression levels between large and medium waves were observed (P<0.05). Significant differences in the expression of novel miRNAs of NW_004080184.1_6326 between medium and large waves were detected (P<0.05), and highly significant differences between medium and small waves were observed (P<0.01). Highly significant differences in the expression level of NW_004080165.1_8572 between medium and large and small waves (P<0.01), in that of NW_004080181.1_3961 between medium and small waves (P<0.01), and in that of NW_004080190.1_13733 between medium and large waves were observed, whereas no significant differences in the other miRNAs among large, medium, and small waves were detected. Overall, the present study showed that miRNA-143, miRNA-10a, let-7i, NW_004080184.1_6326, NW_004080165.1_8572, NW_004080181.1_3961, and NW_004080190.1_13733 could be considered as important candidate genes, indicating these seven miRNAs may play significant roles in hair follicle growth and development in Hu sheep lambskin.
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Affiliation(s)
- Wen Gao
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Wei Sun
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
- * E-mail:
| | - Jinfeng Yin
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Xiaoyang Lv
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Jianjun Bao
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Jiarui Yu
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Lihong Wang
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Chengyan Jin
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Liang Hu
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
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84
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Xue F, Yin J, Xu L, Wang B. MicroRNA-143 inhibits tumorigenesis in hepatocellular carcinoma by downregulating GATA6. Exp Ther Med 2017; 13:2667-2674. [PMID: 28587328 DOI: 10.3892/etm.2017.4348] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2015] [Accepted: 12/23/2016] [Indexed: 01/01/2023] Open
Abstract
MicroRNAs serve a critical role in human hepatocellular carcinoma (HCC) progression. However, the exact role of microRNA-143 (miR-143) in HCC remains unclear. The current study investigates the molecular mechanism of miR-143 in HCC. In cultured HepG2 and Bel7402 cell lines, miR-143 levels were raised by lentivirus transduction. This significantly inhibited HCC progression in terms of cell invasion and proliferation in both HepG2 and Bel7402 cell lines (P<0.05). MiR-143 also significantly decreased tumor implantation in vivo (P<0.05). Regulation of miR-143 on its direct target, GATA-binding factor 6 (GATA6), was investigated by multiple strategies, including dual-luciferase assay, quantitative polymerase chain reaction and western blot analysis. The results indicated that miR-143 was downregulated in both HCC cell lines and human tumors. GATA6 was identified as the downstream target of miR-143 in HCC, and overexpressing GATA6 was able to counter the tumor-suppressive effect of miR-143 on HCC in HepG2 and Bel7402 cells by significantly increasing proliferation and invasion rates (P<0.05). Therefore, a novel epigenetic pathway was identified in which miR-143 may suppress the malignancy of HCC by targeting GATA6.
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Affiliation(s)
- Feng Xue
- Department of Hepatopancreatobiliary Surgery, The Affiliated Tumor Hospital of Xinjiang Medical University, Urumqi, Xinjiang 830000, P.R. China
| | - Jiwei Yin
- Department of Hepatopancreatobiliary Surgery, The Affiliated Tumor Hospital of Xinjiang Medical University, Urumqi, Xinjiang 830000, P.R. China
| | - Lin Xu
- Department of Hepatopancreatobiliary Surgery, The Affiliated Tumor Hospital of Xinjiang Medical University, Urumqi, Xinjiang 830000, P.R. China
| | - Boqing Wang
- Department of Hepatopancreatobiliary Surgery, The Affiliated Tumor Hospital of Xinjiang Medical University, Urumqi, Xinjiang 830000, P.R. China
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85
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Zeng JF, Ma XQ, Wang LP, Wang W. MicroRNA-145 exerts tumor-suppressive and chemo-resistance lowering effects by targeting CD44 in gastric cancer. World J Gastroenterol 2017; 23:2337-2345. [PMID: 28428713 PMCID: PMC5385400 DOI: 10.3748/wjg.v23.i13.2337] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Revised: 01/09/2017] [Accepted: 02/08/2017] [Indexed: 02/07/2023] Open
Abstract
AIM To determine the potential roles of CD4 and microRNA (miR)-145 in gastric cancer.
METHODS The levels of CD44 and miR-145 were determined in gastric cancer cells. Quantitative real-time polymerase chain reaction was used to measure to the level of CD44 mRNA. A luciferase reporter assay and western blotting were performed to examine the effect of miR-145 on CD44 expression. Tumor sphere and MTT assays were carried out to evaluate the self-renewal and chemo-resistance properties of gastric cancer cells.
RESULTS The expression of CD44 was greatly increased and miR-145 was decreased in gastric cancer cells that were highly enriched in cancer stem cells (CSCs). The results demonstrated that miR-145 regulated CD44 by targeting directly the CD44 3’-untranslated region (3’-UTR). In gastric cancer cells, overexpression of miR-145 repressed the activity of the CD44 3’-UTR, and disruption of miR-145/CD44 3’-UTR interactions abrogated the silencing effects. In addition, miR-145 inhibition stimulated CD44 3’-UTR activity and disruption of miR-145/CD44 3’-UTR interactions abrogated this stimulatory effect. Enforced CD44 expression greatly increased tumor sphere formation and chemo-resistance in gastric cancer cells. Furthermore, the inhibition of CSCs and the chemo-sensitivity of gastric cancer cells treated with miR-145 were significantly abrogated by overexpression of CD44.
CONCLUSION miR-145 targeting of CD44 plays critical roles in the regulation of tumor growth and chemo-resistance in gastric cancer.
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86
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Taniguchi K, Sakai M, Sugito N, Kumazaki M, Shinohara H, Yamada N, Nakayama T, Ueda H, Nakagawa Y, Ito Y, Futamura M, Uno B, Otsuki Y, Yoshida K, Uchiyama K, Akao Y. PTBP1-associated microRNA-1 and -133b suppress the Warburg effect in colorectal tumors. Oncotarget 2017; 7:18940-52. [PMID: 26980745 PMCID: PMC4951342 DOI: 10.18632/oncotarget.8005] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2015] [Accepted: 02/05/2016] [Indexed: 01/24/2023] Open
Abstract
It is known that pyruvate kinase in muscle (PKM), which is a rate-limiting glycolytic enzyme, has essential roles in the Warburg effect and that expression of cancer-dominant PKM2 is increased by polypyrimidine tract-binding protein 1 (PTBP1), which is a splicer of the PKM gene. In other words, PKM2 acts as a promoter of the Warburg effect. Previously, we demonstrated that the Warburg effect was partially established by down-regulation of several microRNAs (miRs) that bind to PTBP1 and that ectopic expression of these miRs suppressed the Warburg effect. In this study, we investigated the functions of miR-1 and -133b, which are well known as muscle-specific miRs, from the viewpoint of the Warburg effect in colorectal tumors. The expression levels of miR-1 and -133b were relatively high in colon tissue except muscle and very frequently down-regulated in 75 clinical colorectal tumors samples, even in adenomas, compared with those of the adjacent normal tissue samples. The ectopic expression of these miRs induced growth suppression and autophagic cell death through the switching of PKM isoform expression from PKM2 to PKM1 by silencing PTBP1 expression both in vitro and in vivo. Also, we showed that the resultant increase in the intracellular level of reactive oxygen species (ROS) was involved in this mechanism. Furthermore, PTBP1 was highly expressed in most of the 30 clinical colorectal tumor samples examined, even in adenomas. Our results suggested that PTBP1 and PTBP1-associated miR-1 and -133b are crucial molecules for the maintenance of the Warburg effect in colorectal tumors.
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Affiliation(s)
- Kohei Taniguchi
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu 501-1193, Japan.,Department of General and Gastroenterological Surgery, Osaka Medical College, Takatsuki, Osaka 569-8686, Japan
| | - Miku Sakai
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu 501-1193, Japan
| | - Nobuhiko Sugito
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu 501-1193, Japan
| | - Minami Kumazaki
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu 501-1193, Japan
| | - Haruka Shinohara
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu 501-1193, Japan
| | - Nami Yamada
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu 501-1193, Japan
| | - Tatsushi Nakayama
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu 501-1193, Japan
| | - Hiroshi Ueda
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu 501-1193, Japan
| | - Yoshihito Nakagawa
- Department of Gastroenterology, Fujita Health University, School of Medicine, Kutsukake-cho, Toyoake, Aichi 470-1192, Japan
| | - Yuko Ito
- Department of Anatomy and Cell Biology, Division of Life Sciences, Osaka Medical College, Takatsuki, Osaka 569-8686, Japan
| | - Manabu Futamura
- Department of Oncological Surgery, Gifu University School of Medicine, Gifu 501-1193, Japan
| | - Bunji Uno
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu 501-1193, Japan
| | - Yoshinori Otsuki
- Department of Anatomy and Cell Biology, Division of Life Sciences, Osaka Medical College, Takatsuki, Osaka 569-8686, Japan
| | - Kazuhiro Yoshida
- Department of Oncological Surgery, Gifu University School of Medicine, Gifu 501-1193, Japan
| | - Kazuhisa Uchiyama
- Department of General and Gastroenterological Surgery, Osaka Medical College, Takatsuki, Osaka 569-8686, Japan
| | - Yukihiro Akao
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu 501-1193, Japan
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87
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Zhou X, Yue Y, Wang R, Gong B, Duan Z. MicroRNA-145 inhibits tumorigenesis and invasion of cervical cancer stem cells. Int J Oncol 2017; 50:853-862. [PMID: 28112371 DOI: 10.3892/ijo.2017.3857] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Accepted: 01/02/2017] [Indexed: 11/05/2022] Open
Abstract
MicroRNA (miR)-145 has been reported to induce cancer stem cell (CSC) differentiation through down-regulation of the stem cell transcription factors (TFs) that maintain CSC pluripotency. High expression of miR-145 indicates a good prognosis in cancer patients, but its role in cervical cancer stem cells (CCSCs) is not known. We show that expression of miR-145 and core stem cell transcription factors, Sox2, Nanog and Oct4, are associated with the pluripotency of CCSCs, with increased expression of miR-145 after cervical tumorsphere (CT) differentiation. miR-145 overexpression inhibited expression of core TFs, as well as decreasing tumor invasion and colony formation, whereas miR-145 knockdown led to the opposite effects. Injection of adenovirus-miR-145 significantly reduced tumor growth in nude mice. High miR-145 expression predicted a better prognosis compared with that in patients with low miR-145 expression after analyses of The Cancer Genome Atlas (TCGA) data. These results suggest that miR-145 is able to induce CT differentiation through enzymolyzing TFs and might be a therapeutic target for cervical carcinoma.
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Affiliation(s)
- Xi Zhou
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Yan Yue
- Department of Obstetrics and Gynecology, Renmin Hospital, Hubei University of Medicine, Shiyan, Hubei 442000, P.R. China
| | - Renxiao Wang
- Department of Obstetrics and Gynecology, Renmin Hospital, Hubei University of Medicine, Shiyan, Hubei 442000, P.R. China
| | - Baolan Gong
- Department of Obstetrics and Gynecology, Renmin Hospital, Hubei University of Medicine, Shiyan, Hubei 442000, P.R. China
| | - Zhao Duan
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
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88
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Takai T, Yoshikawa Y, Inamoto T, Minami K, Taniguchi K, Sugito N, Kuranaga Y, Shinohara H, Kumazaki M, Tsujino T, Takahara K, Ito Y, Akao Y, Azuma H. A Novel Combination RNAi toward Warburg Effect by Replacement with miR-145 and Silencing of PTBP1 Induces Apoptotic Cell Death in Bladder Cancer Cells. Int J Mol Sci 2017; 18:ijms18010179. [PMID: 28106737 PMCID: PMC5297811 DOI: 10.3390/ijms18010179] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Revised: 12/27/2016] [Accepted: 01/10/2017] [Indexed: 01/23/2023] Open
Abstract
Bladder cancer is one of the most difficult malignancies to control. We explored the use of a novel RNA-interference method for a driver oncogene regulating cancer specific energy metabolism by the combination treatment with a small interfering RNA (siRNA) and a microRNA. After transfection of T24 and 253JB-V cells with miR-145 and/or siR-PTBP1, we examined the effects of cell growth and gene expression by performing the trypan blue dye exclusion test, Western blot, Hoechst 33342 staining, reverse transcription polymerase chain reaction (RT-PCR), and electron microscopy. The anti-cancer effects of xenograft model mice with miR-145 and/or siR-PTBP1 were then assessed. The combination treatment induced the deeper and longer growth inhibition and reduced the levels of both mRNA and protein expression of c-Myc and polypyrimidine tract-binding protein 1 (PTBP1) more than each single treatment. Notably, the combination treatment not only impaired the cancer specific energy metabolism by inhibiting c-Myc/PTBP1/PKMs axis but also inactivated MAPK/ERK and PI3K/AKT pathways examined in vitro and in vivo. Furthermore, the combination treatment induced apoptosis or autophagy; but, in some cells, apoptotic cell death was accompanied by autophagy, because the condensation of chromatin and many autophagosomes were coexistent. This combination treatment could be a novel RNA-interference strategy through the systemic silencing of the Warburg effect-promoting driver oncogene PTBP1 in bladder cancer cells.
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Affiliation(s)
- Tomoaki Takai
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan.
- Department of Urology, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki, Osaka 569-8686, Japan.
| | - Yuki Yoshikawa
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan.
- Department of Urology, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki, Osaka 569-8686, Japan.
| | - Teruo Inamoto
- Department of Urology, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki, Osaka 569-8686, Japan.
| | - Koichiro Minami
- Department of Urology, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki, Osaka 569-8686, Japan.
| | - Kohei Taniguchi
- Department of General and Gastroenterological Surgery, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki, Osaka 569-8686, Japan.
| | - Nobuhiko Sugito
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan.
| | - Yuki Kuranaga
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan.
| | - Haruka Shinohara
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan.
| | - Minami Kumazaki
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan.
| | - Takuya Tsujino
- Department of Urology, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki, Osaka 569-8686, Japan.
| | - Kiyoshi Takahara
- Department of Urology, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki, Osaka 569-8686, Japan.
| | - Yuko Ito
- Department of Anatomy and Cell Biology, Division of Life Sciences, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki, Osaka 569-8686, Japan.
| | - Yukihiro Akao
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan.
| | - Haruhito Azuma
- Department of Urology, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki, Osaka 569-8686, Japan.
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89
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Gomes SE, Simões AES, Pereira DM, Castro RE, Rodrigues CMP, Borralho PM. miR-143 or miR-145 overexpression increases cetuximab-mediated antibody-dependent cellular cytotoxicity in human colon cancer cells. Oncotarget 2017; 7:9368-87. [PMID: 26824186 PMCID: PMC4891046 DOI: 10.18632/oncotarget.7010] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Accepted: 01/01/2016] [Indexed: 12/21/2022] Open
Abstract
miR-143 and miR-145 are downregulated in colon cancer. Here, we tested the effect of restoring these miRNAs on sensitization to cetuximab in mutant KRAS (HCT116 and SW480) and wild-type KRAS (SW48) colon cancer cells. We evaluated cetuximab-mediated antibody-dependent cellular cytotoxicity (ADCC) and the modulation of signaling pathways involved in immune effector cell-mediated elimination of cancer cells. Stable miR-143 or miR-145 overexpression increased cell sensitivity to cetuximab, resulting in a significant increase of cetuximab-mediated ADCC independently of KRAS status. Importantly, HCT116 cells overexpressing these miRNAs triggered apoptosis in result of cetuximab-mediated ADCC, effected by peripheral blood mononuclear cells (p < 0.01). This was associated with increased apoptosis and caspase-3/7 activity, and reduced Bcl-2 protein expression (p < 0.01). In addition, caspase inhibition abrogated cetuximab-mediated ADCC in HCT116 cells overexpressing either miR-143 or miR-145 (p < 0.01). Furthermore, Bcl-2 silencing led to high level of cetuximab-mediated ADCC, compared to control siRNA (p < 0.05). Importantly, granzyme B inhibition, abrogated cetuximab-mediated ADCC, reducing caspase-3/7 activity (p < 0.01). Collectively, our data suggests that re-introduction of miR-143 or miR-145 may provide a new approach for development of therapeutic strategies to re-sensitize colon cancer cells to cetuximab by stimulating cetuximab-dependent ADCC to induce cell death.
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Affiliation(s)
- Sofia E Gomes
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Lisbon, Portugal
| | - André E S Simões
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Lisbon, Portugal
| | - Diane M Pereira
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Lisbon, Portugal
| | - Rui E Castro
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Lisbon, Portugal
| | - Cecília M P Rodrigues
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Lisbon, Portugal
| | - Pedro M Borralho
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Lisbon, Portugal
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90
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Ren K, Li Z, Li Y, Zhang W, Han X. Long Noncoding RNA Taurine-Upregulated Gene 1 Promotes Cell Proliferation and Invasion in Gastric Cancer via Negatively Modulating miRNA-145-5p. Oncol Res 2016; 25:789-798. [PMID: 27983921 PMCID: PMC7841019 DOI: 10.3727/096504016x14783677992682] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Long noncoding RNA (lncRNA) taurine-upregulated gene 1 (TUG1) is involved in the development and carcinogenesis of various tumors, suggesting the diagnostic potential of TUG1 in these cancers. However, the exact role of TUG1 and its underlying mechanism in gastric cancer (GC) remain unknown. In this study, the expression of TUG1 and miR-145-5p in GC cell lines and nonmalignant gastric epithelial cell lines was detected by qRT-PCR. BGC-823 and SGC-7901 cells were transfected with si-TUG1, pcDNA 3.1-TUG1, miR-145-5p mimics, or matched controls. The biological function of TUG1 and miR-145-5p in GC cell proliferation and invasion in vitro and tumor growth in vivo was investigated by MTT assay, Transwell invasion assay, and tumor xenograft experiments. The regulating relationship between TUG1 and miR-145-5 was confirmed by luciferase reporter assay. The results showed that TUG1 was significantly overexpressed and miR-145-5p was dramatically downregulated in GC cell lines. TUG1 knockdown strikingly inhibited cell proliferation and invasion in vitro and markedly suppressed tumor growth in vivo. Furthermore, TUG1 could directly bind to miR-145-5p and repress miR-145-5p expression. TUG1 overexpression significantly relieved the inhibition on GC cell proliferation and invasion in vitro and tumor growth in vivo, mediated by miR-145-5p overexpression. In conclusion, TUG1 promotes cell proliferation and invasion in GC via negatively modulating miRNA-145-5p, which undoubtedly contributes to understanding the mechanism of GC occurrence and development.
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91
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He B, Xu Z, Chen J, Zheng D, Li A, Zhang LS. Upregulated microRNA-143 inhibits cell proliferation in human nasopharyngeal carcinoma. Oncol Lett 2016; 12:5023-5028. [PMID: 28105209 PMCID: PMC5228360 DOI: 10.3892/ol.2016.5363] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Accepted: 10/18/2016] [Indexed: 11/25/2022] Open
Abstract
The aim of the present study was to investigate the possible functions and mechanism of microRNA (miR)-143 in cell proliferation of human nasopharyngeal carcinoma (NPC). The expression of miR-143 in NPC cells and tissues was investigated using reverse transcription-quantitative polymerase chain reaction. Cell viability assay, colony formation assay and flow cytometry were used to examine the cell proliferative ability and tumorigenicity. The expression levels of p21Cip1, p27Kip1, cyclin D1, phosphorylated (p)-retinoblastoma protein (Rb), Rb and cyclin-dependent kinase (CDK) 6 were determined by western blotting. Luciferase assay was used to confirm whether CDK6 was a direct target of miR-143. miR-143 was downregulated in NPC cell lines and tissues. Overexpression of miR-143 in NPC CNE1 cells inhibited proliferation, tumorigenicity and cell cycle progression. Additionally, ectopic expression of miR-143 downregulated cyclin D1 and p-Rb expression, and upregulated p21Cip1 and p27Kip1 expression, which subsequently inhibited NPC cell proliferation. It was also observed that CDK6 was a direct target of miR-143, which downregulated CDK6 expression. CDK6 suppression by miR-143 was associated with dysregulated expression of p21Cip1, p27Kip1, cyclin D1 and p-Rb, thereby serving an essential role in NPC cell growth. Our findings suggest that miR-143 inhibits proliferation by targeting CDK6, and may aid to identify new targets for anti-oncomiRs.
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Affiliation(s)
- Benfu He
- Department of Oncology, PLA421 Hospital, Guangzhou, Guangdong 510318, P.R. China
| | - Zhe Xu
- Department of Pediatric Surgery, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Jinzhang Chen
- Department of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Dayong Zheng
- Department of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Aimin Li
- Department of Oncology, Integrated Chinese and Western Medicine Hospital, Southern Medical University, Guangzhou, Guangdong 510310, P.R. China
| | - Luo-Sheng Zhang
- Department of Oncology, PLA458 Hospital, Guangzhou, Guangdong 510080, P.R. China
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92
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Sun G, Cheng YW, Lai L, Huang TC, Wang J, Wu X, Wang Y, Huang Y, Wang J, Zhang K, Hu S, Yang JR, Yen Y. Signature miRNAs in colorectal cancers were revealed using a bias reduction small RNA deep sequencing protocol. Oncotarget 2016; 7:3857-72. [PMID: 26646696 PMCID: PMC4826175 DOI: 10.18632/oncotarget.6460] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Accepted: 11/16/2015] [Indexed: 12/21/2022] Open
Abstract
To explore the role of miRNAs in colorectal cancers (CRC), we have deep sequenced 48 pairs of frozen CRC samples, of which 44 pairs produced high quality sequencing data. By using a combined approach of our bias reduction small RNA (smRNA) deep sequencing protocol and Illumina small RNA TruSeq method for sample bar coding, we have obtained data from samples of relatively large size with bias reduced digital profile results. This novel approach allowed us to validate many previously published results using various techniques to profile miRNAs in CRC tissues or cell lines and to characterize ‘true’ miRNA signatures highly expressed in colon/rectum (CR) or CRC tissues. According to our results, miR-21, a miRNA that is up-regulated in CRC, and miR-143, a miRNA that is down-regulated in CRC, are the two miRNAs that dominated the miRNA population in CR tissues, and probably are also the most important miRNAs in CRCs. These two miRNAs, together with the other eight miRNAs, miR-148a, -194, -192, 200b, -200c, -10b, -26a, and -145, with descending expressing levels, constituted the top 10 highly expressed miRNAs in CR/CRC. Using TaqMan miRNA qPCR, we detected the relative expression of some of the CRC miRNAs in 10 CRC cell lines, validated their dysregulation under cancer condition, and provided possible explanation for their dysregulation, which could be caused by APC, KRAS, or TP53 mutations. We believe these results will provide a new direction in future miRNA-related CRC development studies, and application of miRNAs in CRC diagnosis/prognosis, and therapy.
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Affiliation(s)
- Guihua Sun
- Department of Molecular Pharmacology, Beckman Research Institute of The City of Hope, Duarte, CA, USA
| | - Ya-Wen Cheng
- Graduate Institute of Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan
| | - Lily Lai
- Department of Surgery, Beckman Research Institute of The City of Hope, Duarte, CA, USA
| | - Tsui-Chin Huang
- Graduate Institute of Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan
| | - Jinhui Wang
- Integrated Genome Core, Beckman Research Institute of The City of Hope, Duarte, CA, USA
| | - Xiwei Wu
- Integrated Genome Core, Beckman Research Institute of The City of Hope, Duarte, CA, USA
| | - Yafan Wang
- Department of Molecular Pharmacology, Beckman Research Institute of The City of Hope, Duarte, CA, USA
| | - Yasheng Huang
- Department of Molecular Pharmacology, Beckman Research Institute of The City of Hope, Duarte, CA, USA
| | - Jinghan Wang
- Department of Molecular Pharmacology, Beckman Research Institute of The City of Hope, Duarte, CA, USA
| | - Keqiang Zhang
- Department of Molecular Pharmacology, Beckman Research Institute of The City of Hope, Duarte, CA, USA
| | - Shuya Hu
- Department of Molecular Pharmacology, Beckman Research Institute of The City of Hope, Duarte, CA, USA
| | - Ji-Rui Yang
- Graduate Institute of Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan
| | - Yun Yen
- Department of Molecular Pharmacology, Beckman Research Institute of The City of Hope, Duarte, CA, USA.,Graduate Institute of Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan
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93
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Chen JH, Yang R, Zhang W, Wang YP. Functions of microRNA-143 in the apoptosis, invasion and migration of nasopharyngeal carcinoma. Exp Ther Med 2016; 12:3749-3755. [PMID: 28101165 DOI: 10.3892/etm.2016.3847] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Accepted: 09/13/2016] [Indexed: 01/02/2023] Open
Abstract
Nasopharyngeal carcinoma (NPC) is a common cancer characterized by poor prognosis in areas of Southern China where it is endemic. microRNAs (miRNAs) are a class of naturally occurring small noncoding RNAs, some of which contribute to the initiation and development of cancer. The current study was designed to examine the expression level of miR-143 in NPC tissues. The potential functional targets of miR-143 involved in tumor apoptosis, invasion and migration were also investigated. Reverse transcription-quantitative polymerase chain reaction was used to evaluate the expression levels of miR-143 in clinical NPC specimens. Western blotting was used to explore the expression levels of extracellular signal regulated kinase (ERK)-5, Kirsten rat sarcoma viral oncogene homolog (KRAS), caspase 3 and B-cell lymphoma 2 (Bcl-2) in CNE-2Z cells following transfection with miR-143. Significantly decreased expression levels of miR-143 were observed in NPC tissues in comparison with matched normal nasopharyngeal tissues. Moreover, negative associations of miR-143 with tumor invasion depth, as well as lymph node metastasis were found. The enforced expression of miR-143 induced NPC cell apoptosis in addition to the suppression of growth, migration and invasion. The functions of miR-143 in NPC are mediated, at least in part, by the inhibition of ERK-5 activity and promotion of caspase 3 and KRAS expression. These findings suggest that miR-143 may function as a tumor suppressor in the development and progression of NPC.
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Affiliation(s)
- Jin-Hui Chen
- Department of Otorhinolaryngology, Head and Neck Surgery, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Rui Yang
- Department of Otorhinolaryngology, Head and Neck Surgery, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Wei Zhang
- Department of Otorhinolaryngology, Head and Neck Surgery, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Yong-Ping Wang
- Department of Otorhinolaryngology, Head and Neck Surgery, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
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94
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Zhang H, Li W. Dysregulation of micro-143-3p and BALBP1 contributes to the pathogenesis of the development of ovarian carcinoma. Oncol Rep 2016; 36:3605-3610. [PMID: 27748916 DOI: 10.3892/or.2016.5148] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2016] [Accepted: 04/09/2016] [Indexed: 11/05/2022] Open
Abstract
The objective of the present study was to identify the association between mir-143-3p and RalA-binding protein 1 (RALBP1), and their roles in regulating the development of ovarian cancer. Overexpression of RALBP1 induced apoptosis of the ovarian cancer cells, and developed ovarian cancer. In silico analysis and luciferase assay were used to identify whether RALBP1 was the target of mir-143-3p. Subsequently, real‑time PCR and western blotting were used to determine the expression level of mir-143-3p, RALBP1 mRNA and protein in different groups, furthermore, MTT assay and flow cytometry were used to detect the viability and apoptosis of cells in different treatment groups. We identified RALBP1 as a target gene of miR-143-3p using computational analysis, and the luciferase activity of cells transfected with wild-type RALBP1 and RALBP1 siRNA were much lower than the scramble control, however, the luciferase activity of cells transfected with mutant RALBP1 was similar with scramble control. The real-time PCR and western blot results suggested that the miR‑143-3p level was markedly lower in participants with ovarian cancer compared with normal control, while the expression of RALBP1 mRNA and protein were evidently overexpressed in participants with ovarian cancer compared with normal control. Furthermore, the RALBP1 mRNA and protein level in cells transfected with miR-143-3p mimics and RALBP1 siRNA were downregulated, while notably upregulated subsequent to transfection with miR-143-3p inhibitor, when compared with scramble control. Additionally, the viability of cells were inhibited following transfection with miR-143-3p mimics and RALBP1 siRNA, while notably promoted subsequent to transfection with miR-143-3p inhibitor. Apoptosis of cells were promoted following transfection with miR-143-3p mimics and RALBP1 siRNA, while notably inhibited subsequent to transfection with miR-143-3p inhibitor. These findings provide support that downregulation of the miR-143-3p is associated with a decreased risk of ovarian cancer.
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Affiliation(s)
- Hongyan Zhang
- Department of Gynecology, Affiliated Hospital of Jining Medical University, Jining, Shandong 272029, P.R. China
| | - Wanbin Li
- Jining Medical University, Jining, Shandong 272113, P.R. China
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95
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da Silva Oliveira KC, Thomaz Araújo TM, Albuquerque CI, Barata GA, Gigek CO, Leal MF, Wisnieski F, Rodrigues Mello Junior FA, Khayat AS, de Assumpção PP, Rodriguez Burbano RM, Smith MC, Calcagno DQ. Role of miRNAs and their potential to be useful as diagnostic and prognostic biomarkers in gastric cancer. World J Gastroenterol 2016; 22:7951-7962. [PMID: 27672290 PMCID: PMC5028809 DOI: 10.3748/wjg.v22.i35.7951] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2016] [Revised: 06/14/2016] [Accepted: 08/01/2016] [Indexed: 02/06/2023] Open
Abstract
Alterations in epigenetic control of gene expression play an important role in many diseases, including gastric cancer. Many studies have identified a large number of upregulated oncogenic miRNAs and downregulated tumour-suppressor miRNAs in this type of cancer. In this review, we provide an overview of the role of miRNAs, pointing to their potential to be useful as diagnostic and/or prognostic biomarkers in gastric cancer. Moreover, we discuss the influence of polymorphisms and epigenetic modifications on miRNA activity.
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96
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Pashaei E, Guzel E, Ozgurses ME, Demirel G, Aydin N, Ozen M. A Meta-Analysis: Identification of Common Mir-145 Target Genes that have Similar Behavior in Different GEO Datasets. PLoS One 2016; 11:e0161491. [PMID: 27655328 PMCID: PMC5031439 DOI: 10.1371/journal.pone.0161491] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2016] [Accepted: 08/05/2016] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND MicroRNAs, which are small regulatory RNAs, post-transcriptionally regulate gene expression by binding 3'-UTR of their mRNA targets. Their deregulation has been shown to cause increased proliferation, migration, invasion, and apoptosis. miR-145, an important tumor supressor microRNA, has shown to be downregulated in many cancer types and has crucial roles in tumor initiation, progression, metastasis, invasion, recurrence, and chemo-radioresistance. Our aim is to investigate potential common target genes of miR-145, and to help understanding the underlying molecular pathways of tumor pathogenesis in association with those common target genes. METHODS Eight published microarray datasets, where targets of mir-145 were investigated in cell lines upon mir-145 over expression, were included into this study for meta-analysis. Inter group variabilities were assessed by box-plot analysis. Microarray datasets were analyzed using GEOquery package in Bioconducter 3.2 with R version 3.2.2 and two-way Hierarchical Clustering was used for gene expression data analysis. RESULTS Meta-analysis of different GEO datasets showed that UNG, FUCA2, DERA, GMFB, TF, and SNX2 were commonly downregulated genes, whereas MYL9 and TAGLN were found to be commonly upregulated upon mir-145 over expression in prostate, breast, esophageal, bladder cancer, and head and neck squamous cell carcinoma. Biological process, molecular function, and pathway analysis of these potential targets of mir-145 through functional enrichments in PPI network demonstrated that those genes are significantly involved in telomere maintenance, DNA binding and repair mechanisms. CONCLUSION As a conclusion, our results indicated that mir-145, through targeting its common potential targets, may significantly contribute to tumor pathogenesis in distinct cancer types and might serve as an important target for cancer therapy.
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Affiliation(s)
- Elnaz Pashaei
- Department of Computer Engineering, Yildiz Technical University, Istanbul, Turkey
| | - Esra Guzel
- Biruni University, Department of Molecular Biology and Genetics, Topkapi, Istanbul, Turkey
- Department of Medical Genetics, Istanbul University Cerrahpasa Medical School, Istanbul, Turkey
| | - Mete Emir Ozgurses
- Biruni University, Department of Molecular Biology and Genetics, Topkapi, Istanbul, Turkey
| | - Goksun Demirel
- Biruni University, Department of Molecular Biology and Genetics, Topkapi, Istanbul, Turkey
| | - Nizamettin Aydin
- Department of Computer Engineering, Yildiz Technical University, Istanbul, Turkey
| | - Mustafa Ozen
- Biruni University, Department of Molecular Biology and Genetics, Topkapi, Istanbul, Turkey
- Department of Medical Genetics, Istanbul University Cerrahpasa Medical School, Istanbul, Turkey
- Department of Pathology & Immunology Baylor College of Medicine, Houston, Texas, 77030, United States of America
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97
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Miller HC, Frampton AE, Malczewska A, Ottaviani S, Stronach EA, Flora R, Kaemmerer D, Schwach G, Pfragner R, Faiz O, Kos-Kudła B, Hanna GB, Stebbing J, Castellano L, Frilling A. MicroRNAs associated with small bowel neuroendocrine tumours and their metastases. Endocr Relat Cancer 2016; 23:711-26. [PMID: 27353039 DOI: 10.1530/erc-16-0044] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Accepted: 06/27/2016] [Indexed: 12/17/2022]
Abstract
Novel molecular analytes are needed in small bowel neuroendocrine tumours (SBNETs) to better determine disease aggressiveness and predict treatment response. In this study, we aimed to profile the global miRNome of SBNETs, and identify microRNAs (miRNAs) involved in tumour progression for use as potential biomarkers. Two independent miRNA profiling experiments were performed (n=90), including primary SBNETs (n=28), adjacent normal small bowel (NSB; n=14), matched lymph node (LN) metastases (n=24), normal LNs (n=7), normal liver (n=2) and liver metastases (n=15). We then evaluated potentially targeted genes by performing integrated computational analyses. We discovered 39 miRNAs significantly deregulated in SBNETs compared with adjacent NSB. The most upregulated (miR-204-5p, miR-7-5p and miR-375) were confirmed by qRT-PCR. Two miRNAs (miR-1 and miR-143-3p) were significantly downregulated in LN and liver metastases compared with primary tumours. Furthermore, we identified upregulated gene targets for miR-1 and miR-143-3p in an existing SBNET dataset, which could contribute to disease progression, and show that these miRNAs directly regulate FOSB and NUAK2 oncogenes. Our study represents the largest global miRNA profiling of SBNETs using matched primary tumour and metastatic samples. We revealed novel miRNAs deregulated during SBNET disease progression, and important miRNA-mRNA interactions. These miRNAs have the potential to act as biomarkers for patient stratification and may also be able to guide treatment decisions. Further experiments to define molecular mechanisms and validate these miRNAs in larger tissue cohorts and in biofluids are now warranted.
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Affiliation(s)
- Helen C Miller
- Department of Surgery and CancerImperial College, Hammersmith Hospital Campus, London, UK
| | - Adam E Frampton
- Department of Surgery and CancerImperial College, Hammersmith Hospital Campus, London, UK
| | - Anna Malczewska
- Department of Surgery and CancerImperial College, Hammersmith Hospital Campus, London, UK Department of Pathophysiology and EndocrinologySchool of Medicine with the Division of Dentistry in Zabrze, Medical University of Silesia, Katowice, Poland
| | - Silvia Ottaviani
- Department of Surgery and CancerImperial College, Hammersmith Hospital Campus, London, UK
| | - Euan A Stronach
- Department of Surgery and CancerImperial College, Hammersmith Hospital Campus, London, UK
| | - Rashpal Flora
- Department of HistopathologyImperial College Healthcare NHS Trust, Hammersmith Hospital, London, UK
| | - Daniel Kaemmerer
- Zentralklinik Bad Berka GmbHRobert-Koch-Allee, Bad Berka, Germany
| | - Gert Schwach
- Institute of PathophysiologyCenter for Molecular Medicine, Medical University of Graz, Graz, Austria
| | - Roswitha Pfragner
- Institute of PathophysiologyCenter for Molecular Medicine, Medical University of Graz, Graz, Austria
| | | | - Beata Kos-Kudła
- Department of Pathophysiology and EndocrinologySchool of Medicine with the Division of Dentistry in Zabrze, Medical University of Silesia, Katowice, Poland
| | - George B Hanna
- Academic Surgical UnitDepartment of Surgery and Cancer, Imperial College, St Mary's Campus, London, UK
| | - Justin Stebbing
- Department of Pathophysiology and EndocrinologySchool of Medicine with the Division of Dentistry in Zabrze, Medical University of Silesia, Katowice, Poland
| | - Leandro Castellano
- Department of Pathophysiology and EndocrinologySchool of Medicine with the Division of Dentistry in Zabrze, Medical University of Silesia, Katowice, Poland
| | - Andrea Frilling
- Department of Surgery and CancerImperial College, Hammersmith Hospital Campus, London, UK
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98
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Li S, Wu X, Xu Y, Wu S, Li Z, Chen R, Huang N, Zhu Z, Xu X. miR-145 suppresses colorectal cancer cell migration and invasion by targeting an ETS-related gene. Oncol Rep 2016; 36:1917-26. [PMID: 27572146 DOI: 10.3892/or.2016.5042] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Accepted: 03/17/2016] [Indexed: 11/06/2022] Open
Abstract
MicroRNA-45 (miR-145) has been demonstrated to be downregulated in various cancer types including colorectal cancer (CRC). However, the function of miR‑145 in CRC has not been clearly elucidated. In this study, we examined miR-145 expression by quantitative real‑time PCR (qRT‑PCR) in CRC cell lines as well as tumors and corresponding normal mucosa, and the results were correlated to the clinicopathological parameters. In addition, using computational algorithms we investigated putative miR‑145 targets. The role of miR‑145 was further examined in studies in vitro. In our study miR‑145 was significantly decreased in CRC tissues and cell lines compared with non‑cancerous colorectal mucosa, especially lymph node or distance metastasis cases. Based on computational algorithms, we assumed that ERG was directly modulated by miR‑145 in colorectal cancer cells. For the first time, we demonstrated that ERG was highly expressed in CRC tissues compared with normal ones by qRT‑PCR. The inverse correlation between the expression of miR‑145 and ERG was observed in CRC tissues. Dual‑Luciferase assays demonstrated the direct interaction between miR‑145 and 3'‑UTR of ERG mRNA. Ectopic expression of miR‑145 suppressed the proliferation and invasion ability of colorectal cancer cells, while ERG knockdown partially restored the tumor suppressive effect of miR‑145. These results suggested that miR‑145 might act as a tumor suppressor during the process of CRC malignant transformation by interacting with ERG.
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Affiliation(s)
- Shuling Li
- Department of Gastrointestinal Surgery, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, P.R. China
| | - Xiaobing Wu
- Department of Gastrointestinal Surgery, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, P.R. China
| | - Yuandong Xu
- Department of Gastrointestinal Surgery, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, P.R. China
| | - Shangbiao Wu
- Department of Gastrointestinal Surgery, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, P.R. China
| | - Zhifa Li
- Department of Gastrointestinal Surgery, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, P.R. China
| | - Rong Chen
- Department of Gastrointestinal Surgery, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, P.R. China
| | - Nanqi Huang
- Department of Gastrointestinal Surgery, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, P.R. China
| | - Ziyuan Zhu
- Department of Gastrointestinal Surgery, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, P.R. China
| | - Xuehu Xu
- Department of Gastrointestinal Surgery, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, P.R. China
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99
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Potential Diagnostic, Prognostic and Therapeutic Targets of MicroRNAs in Human Gastric Cancer. Int J Mol Sci 2016; 17:ijms17060945. [PMID: 27322246 PMCID: PMC4926478 DOI: 10.3390/ijms17060945] [Citation(s) in RCA: 99] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2016] [Revised: 06/01/2016] [Accepted: 06/07/2016] [Indexed: 12/11/2022] Open
Abstract
Human gastric cancer (GC) is characterized by a high incidence and mortality rate, largely because it is normally not identified until a relatively advanced stage owing to a lack of early diagnostic biomarkers. Gastroscopy with biopsy is the routine method for screening, and gastrectomy is the major therapeutic strategy for GC. However, in more than 30% of GC surgical patients, cancer has progressed too far for effective medical resection. Thus, useful biomarkers for early screening or detection of GC are essential for improving patients’ survival rate. MicroRNAs (miRNAs) play an important role in tumorigenesis. They contribute to gastric carcinogenesis by altering the expression of oncogenes and tumor suppressors. Because of their stability in tissues, serum/plasma and other body fluids, miRNAs have been suggested as novel tumor biomarkers with suitable clinical potential. Recently, aberrantly expressed miRNAs have been identified and tested for clinical application in the management of GC. Aberrant miRNA expression profiles determined with miRNA microarrays, quantitative reverse transcription-polymerase chain reaction and next-generation sequencing approaches could be used to establish sample specificity and to identify tumor type. Here, we provide an up-to-date summary of tissue-based GC-associated miRNAs, describing their involvement and that of their downstream targets in tumorigenic and biological processes. We examine correlations among significant clinical parameters and prognostic indicators, and discuss recurrence monitoring and therapeutic options in GC. We also review plasma/serum-based, GC-associated, circulating miRNAs and their clinical applications, focusing especially on early diagnosis. By providing insights into the mechanisms of miRNA-related tumor progression, this review will hopefully aid in the identification of novel potential therapeutic targets.
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100
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Inamoto T, Taniguchi K, Takahara K, Iwatsuki A, Takai T, Komura K, Yoshikawa Y, Uchimoto T, Saito K, Tanda N, Kouno J, Minami K, Uehara H, Hirano H, Nomi H, Kiyama S, Akao Y, Azuma H. Intravesical administration of exogenous microRNA-145 as a therapy for mouse orthotopic human bladder cancer xenograft. Oncotarget 2016; 6:21628-35. [PMID: 26036261 PMCID: PMC4673291 DOI: 10.18632/oncotarget.4129] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Accepted: 04/30/2015] [Indexed: 12/13/2022] Open
Abstract
We previously reported that the level of microRNA (miR)-145 is attenuated in human bladder cancer cells. In this current study, we investigated whether intravesical administration of miR-145 could be a potential therapeutic strategy for controlling bladder cancer by using an orthotopic human bladder cancer xenograft model. Following transfection of 253J B-V cells with miR-145, the effects of the ectopic expression of miR-145 were examined by performing MTT, Western blotting analysis, Hoechst33342 staining, and wound healing assay in vitro. Also, a mouse orthotopic human bladder cancer model was established by inoculating 253J B-V cells into the bladder wall of mice. The anti-cancer effects of intravesical injections of miR-145 into these mice were then assessed. Transfection of 253J B-V cells with miR-145 induced apoptosis and suppression of cell migration in vitro. Western blotting showed that the levels of c-Myc, socs7, FSCN1, E-cadherin, β-catenin, and catenin δ-1 were decreased and that the PI3K/Akt and Erk1/2 signaling pathways were increased in compensatory fashion. In vivo, mice treated with miR-145 showed 76% inhibition of tumor growth, with a significant prolongation of animal survival (p = 0.0183 vs. control). Western blotting showed that both apoptosis and cell motility-related genes were significantly decreased as seen in vitro. Furthermore, PI3k/Akt and Erk1/2 signaling pathways, which were activated in a compensatory manner in vitro, were decreased in vivo. Intravesical administration of exogenous miR-145 was thus concluded to be a valid therapy for bladder cancer in this human bladder cancer xenograft model.
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Affiliation(s)
- Teruo Inamoto
- Department of Urology, Osaka Medical College, Osaka, Japan
| | - Kohei Taniguchi
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu, Japan
| | | | - Ayako Iwatsuki
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu, Japan
| | - Tomoaki Takai
- Department of Urology, Osaka Medical College, Osaka, Japan
| | | | - Yuki Yoshikawa
- Department of Urology, Osaka Medical College, Osaka, Japan
| | - Taizo Uchimoto
- Department of Urology, Osaka Medical College, Osaka, Japan
| | - Kenkichi Saito
- Department of Urology, Osaka Medical College, Osaka, Japan
| | - Naoki Tanda
- Department of Urology, Osaka Medical College, Osaka, Japan
| | - Junko Kouno
- Department of Urology, Osaka Medical College, Osaka, Japan
| | | | | | - Hajime Hirano
- Department of Urology, Osaka Medical College, Osaka, Japan
| | - Hayahito Nomi
- Department of Urology, Osaka Medical College, Osaka, Japan
| | - Satoshi Kiyama
- Department of Urology, Osaka Medical College, Osaka, Japan
| | - Yukihiro Akao
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu, Japan
| | - Haruhito Azuma
- Department of Urology, Osaka Medical College, Osaka, Japan
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