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Bakhsh T, Alhazmi S, Farsi A, Yusuf AS, Alharthi A, Qahl SH, Alghamdi MA, Alzahrani FA, Elgaddar OH, Ibrahim MA, Bahieldin A. Molecular detection of exosomal miRNAs of blood serum for prognosis of colorectal cancer. Sci Rep 2024; 14:8902. [PMID: 38632250 PMCID: PMC11024162 DOI: 10.1038/s41598-024-58536-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2023] [Accepted: 04/01/2024] [Indexed: 04/19/2024] Open
Abstract
Colorectal cancer (CRC) is the third most common cancer affecting people. The discovery of new, non-invasive, specific, and sensitive molecular biomarkers for CRC may assist in the diagnosis and support therapeutic decision making. Exosomal miRNAs have been demonstrated in carcinogenesis and CRC development, which makes these miRNAs strong biomarkers for CRC. Deep sequencing allows a robust high-throughput informatics investigation of the types and abundance of exosomal miRNAs. Thus, exosomal miRNAs can be efficiently examined as diagnostic biomarkers for disease screening. In the present study, a number of 660 mature miRNAs were detected in patients diagnosed with CRC at different stages. Of which, 29 miRNAs were differentially expressed in CRC patients compared with healthy controls. Twenty-nine miRNAs with high abundance levels were further selected for subsequent analysis. These miRNAs were either highly up-regulated (e.g., let-7a-5p, let-7c-5p, let-7f-5p, let-7d-3p, miR-423-5p, miR-3184-5p, and miR-584) or down-regulated (e.g., miR-30a-5p, miR-99-5p, miR-150-5p, miR-26-5p and miR-204-5p). These miRNAs influence critical genes in CRC, leading to either tumor growth or suppression. Most of the reported diagnostic exosomal miRNAs were shown to be circulating in blood serum. The latter is a novel miRNA that was found in exosomal profile of blood serum. Some of the predicted target genes of highly expressed miRNAs participate in several cancer pathways, including CRC pathway. These target genes include tumor suppressor genes, oncogenes and DNA repair genes. Main focus was given to multiple critical signaling cross-talking pathways including transforming growth factor β (TGFβ) signaling pathways that are directly linked to CRC. In conclusion, we recommend further analysis in order to experimentally confirm exact relationships between selected differentially expressed miRNAs and their predicted target genes and downstream functional consequences.
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Affiliation(s)
- Tahani Bakhsh
- Department of Biology, College of Science, University of Jeddah, Jeddah, Saudi Arabia.
| | - Safiah Alhazmi
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, 21589, Jeddah, Saudi Arabia
- Immunology Unit, King Fahad Medical Research Centre, King Abdulaziz University, 80200, Jedaah, Saudi Arabia
- Neuroscience and Geroscience Research Unit, King Fahad Medical Research Centre, King Abdulaziz University, 80200, Jeddah, Saudi Arabia
- Central lab of biological Sciences, Faculty of Sciences, King Abdulaziz University, 80200, Jeddah, Saudi Arabia
| | - Ali Farsi
- Department of Surgery, Faculty of Medicine, King Abdulaziz University, 21589, Jeddah, Saudi Arabia
| | - Abdulaziz S Yusuf
- Department of Biochemistry, Faculty of science, Stem Cell Unit, King Fahad Center for Medical Research, King Abdulaziz University, 21589, Jeddah, Saudi Arabia
- Medical Laboratory Sciences Department, Fakeeh College for Medical Sciences, 21461, Jeddah, Saudi Arabia
| | - Amani Alharthi
- Department of Biology, College of Science Al-Zulfi, Majmaah University, 11952, Majmaah, Saudi Arabia
| | - Safa H Qahl
- Department of Biology, College of Science, University of Jeddah, Jeddah, Saudi Arabia
| | - Maha Ali Alghamdi
- Department of Biotechnology, College of Science, Taif University, Taif, Saudi Arabia
| | - Faisal A Alzahrani
- Department of Biochemistry, Faculty of science, Stem Cell Unit, King Fahad Center for Medical Research, King Abdulaziz University, 21589, Jeddah, Saudi Arabia
| | - Ola H Elgaddar
- Department of Chemical Pathology, Alexandria University, Alexandria, Egypt
| | - Mohanad A Ibrahim
- Data Science Program, King Abdullah International Medical Research Center, 11481, Riyadh, Saudi Arabia
| | - Ahmed Bahieldin
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, 21589, Jeddah, Saudi Arabia.
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2
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Chen Y, Lu T, Liu Y, Liu Y, Bai S, Chen Q, Zhao B, Wu X. Establishment of SLC7A11-knockout mouse and its preliminary investigation in melanoma. In Vitro Cell Dev Biol Anim 2023; 59:729-737. [PMID: 37932516 DOI: 10.1007/s11626-023-00819-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Accepted: 10/16/2023] [Indexed: 11/08/2023]
Abstract
Solute carrier family 7 member 11 (SLC7A11)/xCT is an amino acid transporter that mediates the cystine uptake and glutamate export, participates in several malignant tumors' progression. However, the role of SLC7A11 on the occurrence and development of melanoma still remains unclear. Here, the transcribed mRNA encoding for Cas9 and sgRNA targeting SLC7A11 in vitro were microinjected into zygotes, to establish the SLC7A11 knockout (KO) mice (SLC7A11-/-). Further, we conducted melanoma-bearing mice using the metastatic melanoma cell line (B16-F10) to observe the melanoma development. There was no off-target in KO mice detected by T7E1 cleavage assay. The results showed that the tumor volume of KO mice was significantly lower than that of SLC7A11+/+ (WT) mice at 8d, 10d, 12d, 14d, and 16d (P < 0.05). The tumors of WT appeared to more disorganized morphology, more unbalanced nuclear-cytoplasmic ratio, less defined boundary, and increased tumor necrosis. And after SLC7A11 deletion, the expression of CXCL9 and TLR6 were significantly up-regulated, and that of NOS2 and CCL8 were significantly down-regulated (P < 0.01). Additionally, Ki67 immunostaining revealed lower proliferating cells in the tumors of SLC7A11 KO mice compared to WT mice. In summary, the deletion of SLC7A11 significantly inhibited the development of melanoma. Our results provide direct evidence to identify SLC7A11 as a novel target for molecular therapy and prognosis judgment of melanoma.
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Affiliation(s)
- Yang Chen
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China
| | - Tingting Lu
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China
| | - Yufei Liu
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China
| | - Yongqi Liu
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China
| | - Shaocheng Bai
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China
| | - Qiuran Chen
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China
| | - Bohao Zhao
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China
| | - Xinsheng Wu
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China.
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3
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Farouk S, El-Shenawy R, Khairy AM, Bader El-Din NG. Overexpression of miRNA 26a and 26b with MMP-9 are valuable diagnostic biomarkers for colorectal cancer patients. Biomark Med 2023; 17:159-169. [PMID: 37097025 DOI: 10.2217/bmm-2022-0861] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2023] Open
Abstract
Background: The key role of miRNA expression in incidence and progression of colorectal cancer (CLC) have been developed over the last decade. Materials & methods: A total of 153 subjects were enrolled into two phases: 14 selected miRNAs were first evaluated in 50 subjects, then miR-26a and miR-26b relative expression were further evaluated in 103 subjects and their target protein MMP-9 was measured. Results: miR-26a and -26b showed highly significant overexpression. Both miR-26a and -26b (p < 0.001) had high diagnostic efficacy for CRC. There was a significant increase in serum MMP-9 protein in CRC patients with positive correlation with miR-26a and -26b expression levels (p < 0.001). Conclusion: miRNA 26a and 26b with MMP-9 can be used as diagnostic biomarker for CRC patients.
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Affiliation(s)
- Sally Farouk
- Department of Microbial Biotechnology, National Research Centre, Dokki, 12622, Egypt
| | - Reem El-Shenawy
- Department of Microbial Biotechnology, National Research Centre, Dokki, 12622, Egypt
| | - Ahmed M Khairy
- Department of Endemic Medicine, Faculty of Medicine, Cairo University, Giza,11562, Egypt
| | - Noha G Bader El-Din
- Department of Microbial Biotechnology, National Research Centre, Dokki, 12622, Egypt
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4
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KrishnaPriya S, Omer S, Banerjee S, Karunagaran D, Suraishkumar GK. An integrated approach to understand fluid shear stress-driven and reactive oxygen species-mediated metastasis of colon adenocarcinoma through mRNA-miRNA-lncRNA-circRNA networks. Mol Genet Genomics 2022; 297:1353-1370. [PMID: 35831469 DOI: 10.1007/s00438-022-01924-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Accepted: 07/01/2022] [Indexed: 11/28/2022]
Abstract
Development of colon adenocarcinoma (COAD) metastasis involves several mediators including fluid shear stress (FSS), intracellular ROS levels, and non-coding RNAs. In our present study, we identified and investigated the role of regulatory non-coding RNA molecules specifically involved in COAD metastasis and their association with FSS and ROS. Interactions between the mRNAs associated with FSS and ROS, the corresponding microRNAs (miRNAs), long noncoding RNAs (lncRNAs) and circular RNAs (circRNAs) in COAD metastasis were used to generate the mRNA-miRNA-lncRNA-circRNA network. Experimental validation of the identified RNA hubs using quantitative real-time PCR demonstrated a direct effect of the FSS on their expression levels in cancer cells. FSS resulted in the downregulation of HMGA1 and RAN, as well as the upregulation of HSP90AA1, PMAIP1 and BIRC5. Application of shear stress also led to downregulation of hsa-miR-26b-5p and hsa-miR-34a-5p levels in HCT116 cells. Further, functional enrichment and survival analysis of the significant miRNAs, as well as the OncoPrint and the survival analyses of the selected mRNAs were performed. Subsequently, their functional role was also corroborated with existing literature. Ten significant miRNA hubs were identified, out of which hsa-miR-17-5p and hsa-miR-20a-5p were found to interact with lncRNA (CCAT2) while hsa-miR-335 was found to interact with four circRNAs. Fifteen significant miRNAs were identified in 10 different modules suggesting their importance in FSS and ROS-mediated COAD metastasis. Finally, 10 miRNAs and 3 mRNAs associated with FSS and/or ROS were identified as significant overall survival markers; 33 mRNAs were also identified as metastasis-free survival markers whereas 15 mRNAs showed > 10% gene alterations in TCGA-COAD data and may serve as promising therapeutic biomarkers in the COAD metastasis.
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Affiliation(s)
- Siluveru KrishnaPriya
- Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, IIT Madras, Chennai, 600036, India
| | - Sonal Omer
- Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, IIT Madras, Chennai, 600036, India
| | - Satarupa Banerjee
- Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, IIT Madras, Chennai, 600036, India. .,School of Bioscience and Technology, Vellore Institute of Technology, Vellore, India.
| | - Devarajan Karunagaran
- Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, IIT Madras, Chennai, 600036, India
| | - G K Suraishkumar
- Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, IIT Madras, Chennai, 600036, India
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5
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Moazzendizaji S, Sevbitov A, Ezzatifar F, Jalili HR, Aalii M, Hemmatzadeh M, Aslani S, Gholizadeh Navashenaq J, Safari R, Hosseinzadeh R, Rahmany MR, Mohammadi H. microRNAs: Small molecules with a large impact on colorectal cancer. Biotechnol Appl Biochem 2021; 69:1893-1908. [PMID: 34550619 DOI: 10.1002/bab.2255] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Accepted: 09/03/2021] [Indexed: 12/23/2022]
Abstract
Colorectal cancer (CRC) accounts for one of the main cancer-related mortality and morbidity worldwide. The molecular mechanisms of CRC development have been broadly investigated and, over the last decade, it has become evident that aberrant transcription of microRNAs (miRNAs), a class of small, noncoding RNA molecules, has a significant role in the inception and promotion of CRC. In the involved tissues of CRC, the transcription profile of miRNAs is modulated, and their expression templates are related with prognosis, diagnosis, and treatment outcomes. Here, in the current review, we attempted to discuss the latest information regarding the aberrantly expressed miRNAs in CRC and the advantages of utilizing miRNAs as biomarkers for early diagnosis and prognosis of CRC as well as potential therapeutic application. The effect of miRNAs involved in various signaling pathways, primarily p53, EGFR, Wnt, and TGF-β pathways, was clarified.
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Affiliation(s)
- Sahand Moazzendizaji
- Department of Immunology, Faculty of Medicine, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Andrey Sevbitov
- Head of Department of Propaedeutics of Dental Diseases, I.M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Fatemeh Ezzatifar
- Molecular and Cell Biology Research Center, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran.,Department of Immunology, School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Hamid Reza Jalili
- Department of Immunology, Faculty of Medicine, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Morteza Aalii
- Department of Immunology, School of Medicine, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
| | - Maryam Hemmatzadeh
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Saeed Aslani
- Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | | | - Roghaiyeh Safari
- Molecular and Cellular Epigenetics (GIGA), University of Liege, Sart-Tilman Liège, Belgium.,13. Molecular and Cellular Biology (TERRA), Gembloux Agro-Bio Tech, University of Liege, Gembloux, Belgium
| | - Ramin Hosseinzadeh
- Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Reza Rahmany
- Department of Immunology, Faculty of Medicine, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Hamed Mohammadi
- Non-Communicable Diseases Research Center, Alborz University of Medical Sciences, Karaj, Iran.,Department of Immunology, School of Medicine, Alborz University of Medical Sciences, Karaj, Iran
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6
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Marengo B, Pulliero A, Izzotti A, Domenicotti C. miRNA Regulation of Glutathione Homeostasis in Cancer Initiation, Progression and Therapy Resistance. Microrna 2021; 9:187-197. [PMID: 31849293 PMCID: PMC7366003 DOI: 10.2174/2211536609666191218103220] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 09/04/2019] [Accepted: 11/13/2019] [Indexed: 12/16/2022]
Abstract
Glutathione (GSH) is the most abundant antioxidant that contributes to regulating the cellular production of Reactive Oxygen Species (ROS) which, maintained at physiological levels, can exert a function of second messengers in living organisms. In fact, it has been demonstrated that moderate amounts of ROS can activate the signaling pathways involved in cell growth and proliferation, while high levels of ROS induce DNA damage leading to cancer development. Therefore, GSH is a crucial player in the maintenance of redox homeostasis and its metabolism has a role in tumor initiation, progression, and therapy resistance. Our recent studies demonstrated that neuroblastoma cells resistant to etoposide, a common chemotherapeutic drug, show a partial monoallelic deletion of the locus coding for miRNA 15a and 16-1 leading to a loss of these miRNAs and the activation of GSH-dependent responses. Therefore, the aim of this review is to highlight the role of specific miRNAs in the modulation of intracellular GSH levels in order to take into consideration the use of modulators of miRNA expression as a useful strategy to better sensitize tumors to current therapies.
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Affiliation(s)
- Barbara Marengo
- Department of Experimental Medicine, University of Genoa, Genoa, Italy
| | | | - Alberto Izzotti
- Department of Experimental Medicine, University of Genoa, Genoa, Italy.,UOC Mutagenesis and Oncologic Prevention, IRCCS Ospedale Policlinico San Martino, Genoa, Italy
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7
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Gerovska D, Garcia-Gallastegi P, Crende O, Márquez J, Larrinaga G, Unzurrunzaga M, Araúzo-Bravo MJ, Badiola I. GeromiRs Are Downregulated in the Tumor Microenvironment during Colon Cancer Colonization of the Liver in a Murine Metastasis Model. Int J Mol Sci 2021; 22:ijms22094819. [PMID: 34062897 PMCID: PMC8124834 DOI: 10.3390/ijms22094819] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 04/23/2021] [Accepted: 04/27/2021] [Indexed: 02/06/2023] Open
Abstract
Cancer is a phenomenon broadly related to ageing in various ways such as cell cycle deregulation, metabolic defects or telomerases dysfunction as principal processes. Although the tumor cell is the main actor in cancer progression, it is not the only element of the disease. Cells and the matrix surrounding the tumor, called the tumor microenvironment (TME), play key roles in cancer progression. Phenotypic changes of the TME are indispensable for disease progression and a few of these transformations are produced by epigenetic changes including miRNA dysregulation. In this study, we found that a specific group of miRNAs in the liver TME produced by colon cancer called geromiRs, which are miRNAs related to the ageing process, are significantly downregulated. The three principal cell types involved in the liver TME, namely, liver sinusoidal endothelial cells, hepatic stellate (Ito) cells and Kupffer cells, were isolated from a murine hepatic metastasis model, and the miRNA and gene expression profiles were studied. From the 115 geromiRs and their associated hallmarks of aging, which we compiled from the literature, 75 were represented in the used microarrays, 26 out of them were downregulated in the TME cells during colon cancer colonization of the liver, and none of them were upregulated. The histone modification hallmark of the downregulated geromiRs is significantly enriched with the geromiRs miR-15a, miR-16, miR-26a, miR-29a, miR-29b and miR-29c. We built a network of all of the geromiRs downregulated in the TME cells and their gene targets from the MirTarBase database, and we analyzed the expression of these geromiR gene targets in the TME. We found that Cercam and Spsb4, identified as prognostic markers in a few cancer types, are associated with downregulated geromiRs and are upregulated in the TME cells.
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Affiliation(s)
- Daniela Gerovska
- Computational Biology and Systems Biomedicine Group, Biodonostia Health Research Institute, C/Doctor Beguiristain s/n, 20014 San Sebastián, Spain;
- Computational Biomedicine Data Analysis Platform, Biodonostia Health Research Institute, C/Doctor Beguiristain s/n, 20014 San Sebastián, Spain
| | - Patricia Garcia-Gallastegi
- Department of Cell Biology and Histology, Faculty of Medicine and Nursing, University of Basque Country (UPV/EHU), 48940 Leioa, Spain; (P.G.-G.); (O.C.); (J.M.)
| | - Olatz Crende
- Department of Cell Biology and Histology, Faculty of Medicine and Nursing, University of Basque Country (UPV/EHU), 48940 Leioa, Spain; (P.G.-G.); (O.C.); (J.M.)
| | - Joana Márquez
- Department of Cell Biology and Histology, Faculty of Medicine and Nursing, University of Basque Country (UPV/EHU), 48940 Leioa, Spain; (P.G.-G.); (O.C.); (J.M.)
| | - Gorka Larrinaga
- Department of Nursing I, Faculty of Medicine and Nursing, University of the Basque Country (UPV/EHU), 48940 Leioa, Spain;
- Department of Physiology, Faculty of Medicine and Nursing, University of the Basque Country (UPV/EHU), 48940 Leioa, Spain
- BioCruces Health Research Institute, 48903 Barakaldo, Spain
| | - Maite Unzurrunzaga
- Centro Salud Legazpi OSI Goierri-Urola Garaia-Osakidetza, 20230 Legazpia, Spain;
| | - Marcos J. Araúzo-Bravo
- Computational Biology and Systems Biomedicine Group, Biodonostia Health Research Institute, C/Doctor Beguiristain s/n, 20014 San Sebastián, Spain;
- Computational Biomedicine Data Analysis Platform, Biodonostia Health Research Institute, C/Doctor Beguiristain s/n, 20014 San Sebastián, Spain
- IKERBASQUE, Basque Foundation for Science, C/María Díaz Harokoa 3, 48013 Bilbao, Spain
- CIBER of Frailty and Healthy Aging (CIBERfes), 28029 Madrid, Spain
- TransBioNet Thematic Network of Excellence for Transitional Bioinformatics, Barcelona Supercomputing Center, 08034 Barcelona, Spain
- Computational Biology and Bioinformatics Group, Max Planck Institute for Molecular Biomedicine, Röntgenstr. 20, 48149 Münster, Germany
- Correspondence: (M.J.A.-B.); (I.B.); Tel.: +34-94-3006108 (M.J.A.-B.); +34-94-6015776 (I.B.)
| | - Iker Badiola
- Department of Cell Biology and Histology, Faculty of Medicine and Nursing, University of Basque Country (UPV/EHU), 48940 Leioa, Spain; (P.G.-G.); (O.C.); (J.M.)
- Nanokide Therapeutics SL, Zitek Ed, Rectorado Bajo, Bº Sarriena sn, 48940 Leioa, Spain
- Correspondence: (M.J.A.-B.); (I.B.); Tel.: +34-94-3006108 (M.J.A.-B.); +34-94-6015776 (I.B.)
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8
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Saberinia A, Alinezhad A, Jafari F, Soltany S, Akhavan Sigari R. Oncogenic miRNAs and target therapies in colorectal cancer. Clin Chim Acta 2020; 508:77-91. [DOI: 10.1016/j.cca.2020.05.012] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 05/06/2020] [Accepted: 05/07/2020] [Indexed: 12/18/2022]
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9
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Eliason S, Sharp T, Sweat M, Sweat YY, Amendt BA. Ectodermal Organ Development Is Regulated by a microRNA-26b-Lef-1-Wnt Signaling Axis. Front Physiol 2020; 11:780. [PMID: 32760291 PMCID: PMC7372039 DOI: 10.3389/fphys.2020.00780] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Accepted: 06/15/2020] [Indexed: 12/25/2022] Open
Abstract
The developmental role of Lef-1 in ectodermal organs has been characterized using Lef-1 murine knockout models. We generated a Lef-1 conditional over-expression (COEL) mouse to determine the role of Lef-1 expression in epithelial structures at later stages of development after endogenous expression switches to the mesenchyme. Lef-1 over expression (OE) in the oral epithelium creates a new dental epithelial stem cell niche that significantly increases incisor growth. These data indicate that Lef-1 expression is switched off in the dental epithelial at early stages to maintain the stem cell niche and regulate incisor growth. Bioinformatics analyses indicated that miR-26b expression increased coinciding with decreased Lef-1 expression in the dental epithelium. We generated a murine model over-expressing miR-26b that targets endogenous Lef-1 expression and Lef-1-related developmental mechanisms. miR-26b OE mice have ectodermal organ defects including a lack of incisors, molars, and hair similar to the Lef-1 null mice. miR-26b OE rescues the Lef-1 OE phenotype demonstrating a critical genetic and developmental role for miR-26b in the temporal and spatial expression of Lef-1 in epithelial tissues. Lef-1 expression regulates Wnt signaling and Wnt target genes as well as cell proliferation mechanisms, while miR-26b OE reduced the levels of Wnt target gene expression. The extra stem cell compartment in the COEL mice expressed Lef-1 suggesting that Lef-1 is a stem cell factor, which was absent in the miR-26b OE/COEL rescue mice. This is the first demonstration of a microRNA OE mouse model that has ectodermal organ defects. These findings demonstrate that the levels of Lef-1 are critical for development and establish a role for miR-26b in the regulation of ectodermal organ development through the control of Lef-1 expression and an endogenous stem cell niche.
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Affiliation(s)
- Steve Eliason
- Department of Anatomy and Cell Biology, The University of Iowa, Iowa City, IA, United States.,Craniofacial Anomalies Research Center, The University of Iowa, Iowa City, IA, United States
| | - Thad Sharp
- Department of Anatomy and Cell Biology, The University of Iowa, Iowa City, IA, United States.,Craniofacial Anomalies Research Center, The University of Iowa, Iowa City, IA, United States
| | - Mason Sweat
- Department of Anatomy and Cell Biology, The University of Iowa, Iowa City, IA, United States.,Craniofacial Anomalies Research Center, The University of Iowa, Iowa City, IA, United States
| | - Yan Y Sweat
- Department of Anatomy and Cell Biology, The University of Iowa, Iowa City, IA, United States.,Craniofacial Anomalies Research Center, The University of Iowa, Iowa City, IA, United States
| | - Brad A Amendt
- Department of Anatomy and Cell Biology, The University of Iowa, Iowa City, IA, United States.,Craniofacial Anomalies Research Center, The University of Iowa, Iowa City, IA, United States.,Iowa Institute for Oral Health Research, The University of Iowa, Iowa City, IA, United States
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10
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Dulskas A, Patasius A, Kaceniene A, Linkeviciute-Ulinskiene D, Zabuliene L, Smailyte G. A Cohort Study of Antihyperglycemic Medication Exposure and Gastric Cancer Risk. J Clin Med 2020; 9:jcm9020435. [PMID: 32033451 PMCID: PMC7073990 DOI: 10.3390/jcm9020435] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Revised: 01/07/2020] [Accepted: 02/04/2020] [Indexed: 12/24/2022] Open
Abstract
We assessed gastric cancer risk in type 2 diabetes mellitus patients. Gastric cancer patients with diabetes between 2001–2012 were identified. Four groups were analysed: combination therapy with metformin users; insulin and other medication users; metformin and insulin users; and sulfonylurea users. Standardised incidence ratios (SIRs) for gastric cancers as a ratio of the observed number of cancer cases in people with diabetes to the expected number of cancer cases in the underlying general population were calculated. A total of 99,992 patients with diabetes were analysed and 337 gastric cancer cases in patients with diabetes were observed when compared to the expected number of 400.54 gastric cancer cases, according to the cancer rates of the general population (SIR 0.84, 95% confidence interval (CI): 0.76–0.94). Lower risk of gastric cancer was found both in male and female patients with diabetes, however, risk among females was insignificantly lower. Higher gastric cancer risk was found in the group of diabetic patients treated with sulfonylureas (SIR 1.31, 95% CI: 1.04–1.65) and significantly lower risk than expected from the general population was found in the group of metformin users (SIR 0.75, 95% CI: 0.66–0.86). Type 2 diabetes mellitus was not associated with increased risk of gastric cancer. Metformin might decrease the risk of gastric cancer in patients with diabetes, while sulfonylureas may increase gastric cancer risk.
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Affiliation(s)
- Audrius Dulskas
- Department of Abdominal and General Surgery and Oncology, National Cancer Institute, 1 Santariskiu Str., LT-08406 Vilnius, Lithuania
- University of Applied Sciences, Faculty of Health Care, 45 Didlaukio Str., LT-08303 Vilnius, Lithuania
- Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, 21/27 M. K. Ciurlionio Str., LT-03101 Vilnius, Lithuania;
- Correspondence: or ; Tel.: +37067520094
| | - Ausvydas Patasius
- Laboratory of Cancer Epidemiology, National Cancer Institute, 1 Santariskiu Str., LT-08406 Vilnius, Lithuania; (A.P.); (A.K.); (G.S.)
- Institute of Health Sciences, Faculty of Medicine, Vilnius University, 21/27 M. K. Ciurlionio Str., LT-03101 Vilnius, Lithuania
| | - Auguste Kaceniene
- Laboratory of Cancer Epidemiology, National Cancer Institute, 1 Santariskiu Str., LT-08406 Vilnius, Lithuania; (A.P.); (A.K.); (G.S.)
| | - Donata Linkeviciute-Ulinskiene
- Institute of Biomedical Sciences, Faculty of Medicine, Vilnius University, 21/27 M. K. Ciurlionio Str., LT-03101 Vilnius, Lithuania;
| | - Lina Zabuliene
- Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, 21/27 M. K. Ciurlionio Str., LT-03101 Vilnius, Lithuania;
| | - Giedre Smailyte
- Laboratory of Cancer Epidemiology, National Cancer Institute, 1 Santariskiu Str., LT-08406 Vilnius, Lithuania; (A.P.); (A.K.); (G.S.)
- Institute of Health Sciences, Faculty of Medicine, Vilnius University, 21/27 M. K. Ciurlionio Str., LT-03101 Vilnius, Lithuania
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11
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Mormile R. Metformin in colorectal cancer: A match ruled by MiR26b? Cancer Epidemiol 2019; 64:101627. [PMID: 31706881 DOI: 10.1016/j.canep.2019.101627] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 10/26/2019] [Indexed: 10/25/2022]
Affiliation(s)
- Raffaella Mormile
- Division of Pediatrics and Neonatology, Moscati Hospital, Via A. Gramsci, 81031 Aversa, Italy.
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12
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Xu M, Chen X, Lin K, Zeng K, Liu X, Xu X, Pan B, Xu T, Sun L, He B, Pan Y, Sun H, Wang S. lncRNA SNHG6 regulates EZH2 expression by sponging miR-26a/b and miR-214 in colorectal cancer. J Hematol Oncol 2019; 12:3. [PMID: 30626446 PMCID: PMC6327409 DOI: 10.1186/s13045-018-0690-5] [Citation(s) in RCA: 137] [Impact Index Per Article: 27.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Accepted: 12/25/2018] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Abnormal expression of long non-coding RNAs (lncRNAs) has been found in almost all human tumors, providing numerous potential diagnostic biomarkers, prognostic biomarkers, and therapeutic targets. METHODS We analyzed RNA sequencing data to explore abnormally expressed lncRNAs in colorectal cancer (CRC). The functions of small nucleolar RNA host gene 6 (SNHG6) were investigated through in vitro and in vivo assays (CCK-8 assay, colony formation assay, flow cytometry assay, EdU assay, wound healing assay, transwell assay, and xenograft model). The mechanism of action of SNHG6 was explored through bioinformatics, RNA fluorescence in situ hybridization, luciferase reporter assay, RNA pull-down assay, chromatin immunoprecipitation assay, and RNA immunoprecipitation assay. RESULTS We identified aberrantly expressed lncRNAs in CRC. We found that elevated SNHG6 expression was associated with poor prognosis and CRC progression. We also demonstrated that the high SNHG6 expression was partly due to DNA copy number gains and SP1 induction. Functional studies showed that SNHG6 promoted CRC cell growth, migration, and invasion both in vitro and in vivo. Mechanistically, we found that SNHG6 expressed predominantly in the cytoplasm. SNHG6 could interact with miR-26a, miR-26b, and miR-214 and regulate their common target EZH2. CONCLUSIONS Our study elucidated that SNHG6 acted as an oncogene in CRC, which might serve as a novel target for CRC diagnosis and therapy.
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Affiliation(s)
- Mu Xu
- General Clinical Research Center, Nanjing First Hospital, Nanjing Medical University, No. 68, Changle Road, Nanjing, 210006 China
| | - Xiaoxiang Chen
- General Clinical Research Center, Nanjing First Hospital, Nanjing Medical University, No. 68, Changle Road, Nanjing, 210006 China
- School of Medicine, Southeast University, Nanjing, 210009 China
| | - Kang Lin
- Department of Laboratory Medicine, Nanjing First Hospital, Nanjing Medical University, Nanjing, 210006 China
| | - Kaixuan Zeng
- General Clinical Research Center, Nanjing First Hospital, Nanjing Medical University, No. 68, Changle Road, Nanjing, 210006 China
- School of Medicine, Southeast University, Nanjing, 210009 China
| | - Xiangxiang Liu
- General Clinical Research Center, Nanjing First Hospital, Nanjing Medical University, No. 68, Changle Road, Nanjing, 210006 China
| | - Xueni Xu
- General Clinical Research Center, Nanjing First Hospital, Nanjing Medical University, No. 68, Changle Road, Nanjing, 210006 China
- School of Medicine, Southeast University, Nanjing, 210009 China
| | - Bei Pan
- General Clinical Research Center, Nanjing First Hospital, Nanjing Medical University, No. 68, Changle Road, Nanjing, 210006 China
| | - Tao Xu
- General Clinical Research Center, Nanjing First Hospital, Nanjing Medical University, No. 68, Changle Road, Nanjing, 210006 China
| | - Li Sun
- Department of Laboratory Medicine, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, 210011 China
| | - Bangshun He
- General Clinical Research Center, Nanjing First Hospital, Nanjing Medical University, No. 68, Changle Road, Nanjing, 210006 China
| | - Yuqin Pan
- General Clinical Research Center, Nanjing First Hospital, Nanjing Medical University, No. 68, Changle Road, Nanjing, 210006 China
| | - Huiling Sun
- General Clinical Research Center, Nanjing First Hospital, Nanjing Medical University, No. 68, Changle Road, Nanjing, 210006 China
| | - Shukui Wang
- General Clinical Research Center, Nanjing First Hospital, Nanjing Medical University, No. 68, Changle Road, Nanjing, 210006 China
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13
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Liu D, Song L, Liang Q, Hao L, Zhang Z, Han C. Long noncoding RNA LEF1‐AS1 silencing suppresses the initiation and development of prostate cancer by acting as a molecular sponge of miR‐330‐5p via LEF1 repression. J Cell Physiol 2019; 234:12727-12744. [PMID: 30613973 DOI: 10.1002/jcp.27893] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Accepted: 11/14/2018] [Indexed: 02/06/2023]
Affiliation(s)
- Da‐Chuang Liu
- Department of Urology Xuzhou Central Hospital Xuzhou P. R. China
- Xuzhou Institute of Medical Science Xuzhou P. R. China
| | - Lin‐Lin Song
- Department of Respiratory Xuzhou Central Hospital Xuzhou P. R. China
| | - Qing Liang
- Department of Urology Xuzhou Central Hospital Xuzhou P. R. China
| | - Lin Hao
- Department of Urology Xuzhou Central Hospital Xuzhou P. R. China
| | - Zhi‐Guo Zhang
- Department of Urology Xuzhou Central Hospital Xuzhou P. R. China
| | - Cong‐Hui Han
- Department of Urology Xuzhou Central Hospital Xuzhou P. R. China
- Xuzhou Institute of Medical Science Xuzhou P. R. China
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14
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Wang B, Lu FY, Shi RH, Feng YD, Zhao XD, Lu ZP, Xiao L, Zhou GQ, Qiu JM, Cheng CE. MiR-26b regulates 5-FU-resistance in human colorectal cancer via down-regulation of Pgp. Am J Cancer Res 2018; 8:2518-2527. [PMID: 30662808 PMCID: PMC6325481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Accepted: 11/25/2018] [Indexed: 06/09/2023] Open
Abstract
Chemotherapy resistance frequently drives tumor progression. However, the underlying molecular mechanisms remain unclear. In this study, we found that the expression level of miR-26b was down-regulated in the human colorectal cancer tissues and the resistant cells strains: HT-29/5-FU and LOVO/5-FU cells. Meanwhile, we showed that miR-26b improved sensibility of colorectal cancer cells to 5-FU in vitro and enhanced the potency of 5-FU in the inhibition of tumor growth in vivo. We further demonstrated that the tumor suppressive role of miR-26b was mediated by negatively regulating P-glycoprotein (Pgp) protein expression. Furthermore, studies of colorectal cancer specimens indicated that the expression of miR-26b and Pgp had inverse correlation. Importantly, we found that CpG islands in the miR-26b promoter region were hypermethylated in 5-FU resistant cells. Our study is the first to identify the tumor suppressive role of over-expressed miR-26b in chemo-sensitivity. Identification of a novel miRNA-mediated pathway that regulates chemo-sensitivity in colorectal cancer will facilitate the development of novel therapeutic strategies in the future.
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Affiliation(s)
- Bin Wang
- Department of Gastroenterology, Changshu No. 2 People’s Hospital (The 5th Clinical Medical College of Yangzhou University)Suzhou, China
| | - Fen-Ying Lu
- Department of Gastroenterology, Changshu No. 2 People’s Hospital (The 5th Clinical Medical College of Yangzhou University)Suzhou, China
| | - Rui-Hua Shi
- Department of Gastroenterology, Zhongda Hospital, Southeast UniversityNanjing, China
| | - Ya-Dong Feng
- Department of Gastroenterology, Zhongda Hospital, Southeast UniversityNanjing, China
| | - Xiao-Dan Zhao
- Department of Gastroenterology, Zhongda Hospital, Southeast UniversityNanjing, China
| | - Zhi-Ping Lu
- Department of Gastroenterology, Changshu No. 2 People’s Hospital (The 5th Clinical Medical College of Yangzhou University)Suzhou, China
| | - Long Xiao
- Department of Gastroenterology, Changshu No. 2 People’s Hospital (The 5th Clinical Medical College of Yangzhou University)Suzhou, China
| | - Guo-Qiang Zhou
- Department of General Surgery, Changshu No. 2 People’s Hospital (The 5th Clinical Medical College of Yangzhou University)Suzhou, China
| | - Jia-Ming Qiu
- Department of Pathology, Changshu No. 2 People’s Hospital (The 5th Clinical Medical College of Yangzhou University)Suzhou, China
| | - Cui-E Cheng
- Department of Gastroenterology, Changshu No. 2 People’s Hospital (The 5th Clinical Medical College of Yangzhou University)Suzhou, China
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15
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Mormile R. Metformin and Colorectal Cancer Risk—Letter. Cancer Epidemiol Biomarkers Prev 2018; 27:1385. [DOI: 10.1158/1055-9965.epi-18-0559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2018] [Revised: 08/06/2018] [Accepted: 08/15/2018] [Indexed: 11/16/2022] Open
Affiliation(s)
- Raffaella Mormile
- Division of Pediatrics and Neonatology, Moscati Hospital, Aversa, Italy
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16
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Lu R, Yang Z, Xu G, Yu S. miR-338 modulates proliferation and autophagy by PI3K/AKT/mTOR signaling pathway in cervical cancer. Biomed Pharmacother 2018; 105:633-644. [PMID: 29898430 DOI: 10.1016/j.biopha.2018.06.024] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Revised: 05/31/2018] [Accepted: 06/05/2018] [Indexed: 12/11/2022] Open
Abstract
Cervical cancer (CC) is a malignant solid tumor, which is one of the main causes of morbidity and mortality in women. Given that autophagy is an important factor promoting tumor progression, we aim to investigate the functional role of miR-338 in autophagy and proliferation of cervical cancer. In our study, expression of miR-338 was validated by quantitative RT-PCR in 30 paired cervical cancer tissues and normal tissues. We performed MTT, colony formation and cell cycle assay to explore the effect of miR-338 on cell proliferation. The level of autophagy was evaluated by observing the expression of LC3 formation under fluorescence microscope and detected the LC3 expression by western blot. We used luciferase reporter assays to identify the target gene about miR-338. We not only found that the level of miR-338 is decreased in cervical cancer tissues and cells, but also negatively correlated with the protein level of ATF2. In turn, restoring the expression of miR-338 inhibited proliferation in Hela and SiHa cells. Further mechanistic study identified that ATF2 as a direct target of miR-338. Forced lowexpression of miR-338 directly led to increased the level of autophagy in cervical cancer cells, which was similar to the mTOR signaling inhibitor rapamycin. The western blot analysis show that inhibited miR-338 expression could decrease the p-mTOR and p-p70S6 expression. Thus, we infer that miR-338 decreases autophagy level in cervical cancer cells by activating mTOR signaling pathway. In summary, our study demonstrate that miR-338 could inhibites proliferation and autophagy by targeting ATF2 via mTOR signaling pathway on cervical cancer cells. These results suggest a potential application of miR-338 in cervical cancer as a novel mechanism of tumor therapeutic.
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Affiliation(s)
- Rong Lu
- Department of Gynecology, Huai'an Second People's Hospital, The Affiliated Huaian Hospital of Xuzhou Medical University, Huai'an, 223002, China
| | - Zhanhua Yang
- Department of Nursing, Huaian Maternity and Child Healthcare Hospital Affiliated to Yangzhou University Medical College, Huai'an, 223002, China
| | - Guoying Xu
- Department of gynecology, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University. Huai'an, 223300, China.
| | - Shengsheng Yu
- Department of laboratory medicine, Jiangsu college of nursing. Huai'an, 223005, China.
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17
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Fan D, Lin X, Zhang F, Zhong W, Hu J, Chen Y, Cai Z, Zou Y, He X, Chen X, Lan P, Wu X. MicroRNA 26b promotes colorectal cancer metastasis by downregulating phosphatase and tensin homolog and wingless-type MMTV integration site family member 5A. Cancer Sci 2017; 109:354-362. [PMID: 29160937 PMCID: PMC5797816 DOI: 10.1111/cas.13451] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Revised: 11/10/2017] [Accepted: 11/15/2017] [Indexed: 01/02/2023] Open
Abstract
Invasion and metastasis are crucially important factors in the survival of malignant tumors. Epithelial-mesenchymal transition (EMT) is an early step in metastatic progression and the presence of cancer stem cells is closely related to tumor survival, proliferation, metastasis, and recurrence. Herein we report that ectopic overexpression of microRNA 26b (miR-26b) in colorectal cancer (CRC) cell lines promoted EMT and stem cell-like phenotypes in vitro. Furthermore, miR-26b directly targeted and suppressed multiple tumor suppressors, including phosphatase and tensin homolog (PTEN) and wingless-type MMTV integration site family member 5A (WNT5A). Notably, miR-26b is markedly upregulated in tumor samples from patients with lymphatic metastases. These results indicate that miR-26b promotes CRC metastasis by downregulating PTEN and WNT5A, and may represent a therapeutic target for metastatic CRC.
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Affiliation(s)
- Dejun Fan
- Department of Colorectal Surgery, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,Department of Gastrointestinal Endoscopy, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Xutao Lin
- Department of Colorectal Surgery, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,Department of Gastrointestinal Endoscopy, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Feng Zhang
- Department of Rheumatology, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Weijie Zhong
- Department of Gastrointestinal Endoscopy, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Jiancong Hu
- Department of Colorectal Surgery, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Yufeng Chen
- Department of Colorectal Surgery, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Zerong Cai
- Department of Colorectal Surgery, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Yifeng Zou
- Department of Colorectal Surgery, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Xiaowen He
- Department of Colorectal Surgery, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Xiuting Chen
- Department of Colorectal Surgery, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Ping Lan
- Department of Colorectal Surgery, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Xiaojian Wu
- Department of Colorectal Surgery, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
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18
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Wang S, Guo D, Li C. Downregulation of miRNA-26b inhibits cancer proliferation of laryngeal carcinoma through autophagy by targeting ULK2 and inactivation of the PTEN/AKT pathway. Oncol Rep 2017; 38:1679-1687. [PMID: 28713931 DOI: 10.3892/or.2017.5804] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2016] [Accepted: 06/07/2017] [Indexed: 11/05/2022] Open
Abstract
Laryngeal carcinoma is one of the most common tumors of the head and neck cancers, the pathogenesis of which remains yet unclear. It has been discovered through research that microRNAs (miRNAs) play an important role during the genesis of laryngeal carcinoma. In the present study we investigated the effect of miRNA-26b on the proliferation of laryngeal carcinoma and elucidated the potential underlying mechanisms in order to provide new targets for laryngeal carcinoma. Firstly, we found that miRNA-26b expression was significantly increased in patients with laryngeal carcinoma, compared with normal volunteers. The downregulation of miRNA-26b inhibited cell proliferation and induced apoptosis of Hep-2 cells. Furthermore, downregulation of the expression of miRNA‑26b promoted Bax, LC3 and p62 protein expression, decreased ULK2 mRNA and protein expression, as well as PTEN protein expression and increased phosphorylated‑AKT protein expression in Hep-2 cells as determined using quantification by real-time PCR and western blotting. The concomitant downregulation of ULK2 and miRNA-26b futher enhanced the miRNA‑26b-induced autophagy and apoptosis in addition to the miRNA-26b-inhibited cell proliferation of Hep-2 cells by targeting ULK2 and inactivating the PTEN/AKT pathway as determined by immunocytofluorescence. These findings revealed that miRNA-26b may play a key role in cell growth and death of laryngeal carcinoma through ULK2 and the PTEN/AKT pathway, and thus may be a new target for gene therapy in laryngeal carcinoma.
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Affiliation(s)
- Shujing Wang
- Huaihe Hospital of Henan University, Gulou, Kaifeng, Henan 475000, P.R. China
| | - Dandan Guo
- Huaihe Hospital of Henan University, Gulou, Kaifeng, Henan 475000, P.R. China
| | - Congying Li
- Medical College of Kaifeng University, Gulou, Kaifeng, Henan 475000, P.R. China
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19
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Han W, He L, Cao B, Zhao X, Zhang K, Li Y, Beck P, Zhou Z, Tian Y, Cheng S, Wang H. Differential expression of LEF1/TCFs family members in colonic carcinogenesis. Mol Carcinog 2017; 56:2372-2381. [PMID: 27433921 DOI: 10.1002/mc.22530] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Revised: 07/04/2016] [Accepted: 07/11/2016] [Indexed: 01/19/2023]
Affiliation(s)
- Wenxiao Han
- State Key Laboratory of Molecular Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Longmei He
- State Key Laboratory of Molecular Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Bangrong Cao
- Department of etiology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- Department of Basic Research, Sichuan Cancer Hospital and Institute, Sichuan, China
| | - Xinhua Zhao
- State Key Laboratory of Molecular Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Kaitai Zhang
- State Key Laboratory of Molecular Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- Department of etiology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yan Li
- Inflammation Research Network, University of Calgary, Calgary, Alberta, Canada
- Department of Physiology and Biophysics, University of Calgary, Calgary, Alberta, Canada
| | - Paul Beck
- Inflammation Research Network, University of Calgary, Calgary, Alberta, Canada
- Department of Physiology and Biophysics, University of Calgary, Calgary, Alberta, Canada
| | - Zhixiang Zhou
- Department of Gastrointestinal Cancer Surgery, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yantao Tian
- Department of Gastrointestinal Cancer Surgery, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Shujun Cheng
- State Key Laboratory of Molecular Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- Department of etiology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Hongying Wang
- State Key Laboratory of Molecular Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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20
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Moridikia A, Mirzaei H, Sahebkar A, Salimian J. MicroRNAs: Potential candidates for diagnosis and treatment of colorectal cancer. J Cell Physiol 2017; 233:901-913. [PMID: 28092102 DOI: 10.1002/jcp.25801] [Citation(s) in RCA: 140] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Accepted: 01/13/2017] [Indexed: 12/13/2022]
Abstract
Colorectal cancer (CRC) is known as the third common cancer worldwide and an important public health problem in different populations. Several genetics and environmental risk factors are involved in the development and progression of CRC including chromosomal abnormalities, epigenetic alterations, and unhealthy lifestyle. Identification of risk factors and biomarkers could lead to a better understanding of molecular pathways involved in CRC pathogenesis. MicroRNAs (miRNAs) are important regulatory molecules which could affect a variety of cellular and molecular targets in CRC. A large number of studies have indicated deregulations of some known tissue-specific miRNAs, for example, miR-21, miR-9, miR-155, miR-17, miR-19, let-7, and miR-24 as well as circulating miRNAs, for example, miR-181b, miR-21, miR-183, let-7g, miR-17, and miR-126, in patients with CRC. In the current review, we focus on the findings of preclinical and clinical studies performed on tissue-specific and circulating miRNAs as diagnostic biomarkers and therapeutic targets for the detection of patients at various stages of CRC.
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Affiliation(s)
- Abdullah Moridikia
- Chemical Injuries Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Hamed Mirzaei
- Chemical Injuries Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran.,Department of Medical Biotechnology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Amirhossein Sahebkar
- Department of Medical Biotechnology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.,Biotechnology Research Center, Mashhad University of Medical Science, Mashhad, Iran
| | - Jafar Salimian
- Chemical Injuries Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
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21
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Rahmani F, Avan A, Hashemy SI, Hassanian SM. Role of Wnt/β‐catenin signaling regulatory microRNAs in the pathogenesis of colorectal cancer. J Cell Physiol 2017; 233:811-817. [DOI: 10.1002/jcp.25897] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Accepted: 03/06/2017] [Indexed: 12/13/2022]
Affiliation(s)
- Farzad Rahmani
- Department of Medical BiochemistrySchool of MedicineMashhad University of Medical SciencesMashhadIran
| | - Amir Avan
- Department of Modern Sciences and TechnologiesSchool of MedicineMashhad University of Medical SciencesMashhadIran
- Cancer Research CenterSchool of MedicineMashhad University of Medical SciencesMashhadIran
| | - Seyed Isaac Hashemy
- Surgical Oncology Research CenterMashhad University of Medical SciencesMashhadIran
| | - Seyed Mahdi Hassanian
- Department of Medical BiochemistrySchool of MedicineMashhad University of Medical SciencesMashhadIran
- Metabolic Syndrome Research CenterMashhad University of Medical SciencesMashhadIran
- Microanatomy Research CenterMashhad University of Medical SciencesMashhadIran
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22
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Regulation of PI3K signaling in T-cell acute lymphoblastic leukemia: a novel PTEN/Ikaros/miR-26b mechanism reveals a critical targetable role for PIK3CD. Leukemia 2017; 31:2355-2364. [PMID: 28280276 PMCID: PMC5986278 DOI: 10.1038/leu.2017.80] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Revised: 02/21/2017] [Accepted: 02/23/2017] [Indexed: 01/07/2023]
Abstract
T-cell acute lymphoblastic leukemia (T-ALL) is an aggressive hematologic
malignancy, and T-ALL patients are prone to early disease relapse and suffer
from poor outcomes. The PTEN, PI3K/AKT, and Notch pathways are frequently
altered in T-ALL. PTEN is a tumor suppressor that inactivates the PI3K pathway.
We profiled miRNAs in Pten-deficient mouse T-ALL and identified
miR-26b as a potentially dysregulated gene. We validated decreased expression
levels of miR-26b in mouse and human T-ALL cells. In addition, expression of
exogenous miR-26b reduced proliferation and promoted apoptosis of T-ALL cells
in vitro, and hindered progression of T-ALL in
vivo. Furthermore, miR-26b inhibited the PI3K/AKT pathway by
directly targeting PIK3CD, the gene encoding PI3Kδ, in
human T-ALL cell lines. ShRNA for PIK3CD and CAL-101, a PIK3CD
inhibitor, reduced the growth and increased apoptosis of T-ALL cells. Finally,
we showed that PTEN induced miR-26b expression by regulating the differential
expression of Ikaros isoforms that are transcriptional regulators of miR-26b.
These results suggest that miR-26b functions as a tumor suppressor in the
development of T-ALL. Further characterization of targets and regulators of
miR-26b may be promising for the development of novel therapies.
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23
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Chen Y, Zhang Y, He J, Fu Y, Lin C, Li X. MicroRNA-133b is regulated by TAp63 while no gene mutation is present in colorectal cancer. Oncol Rep 2017; 37:1646-1652. [PMID: 28098895 DOI: 10.3892/or.2017.5371] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Accepted: 08/08/2016] [Indexed: 11/06/2022] Open
Abstract
Downregulation of miR-133b has been reported in multiple types of malignancies including colorectal cancer (CRC). We previously confirmed that TAp63 actively translates microRNA-133b (miR-133b) transcripts. While the presence of miRNA mutations have frequently been described in CRC, most CRCs do not show any variation in the miR‑133b coding sequence. Therefore, it is important to elucidate the relationship between TAp63 and miR-133b, and identify other mediators of miR-133b downregulation in CRC. The expression of TAp63 was detected by RT-qPCR, western blotting, immunohistochemistry (IHC) and densitometric analysis using Image-Pro Plus 6.0 software in 38 CRC and corresponding non-cancerous tissues (NCTs). The expression of mature miR‑133b was determined by RT-qPCR, in situ hybridization (ISH) and densitometric analysis using Image-Pro Plus 6.0 software. The DNA from 38 CRC tissues and NCTs were screened for miR-133b mutations through sequence analysis. Compared with the NCTs, TAp63 mRNA expression was significantly lower in 21 (55.27%) tumor tissues. Compared with the NCTs, the miR‑133b expression level was significantly lower in 31 (81.58%) tumor tissues. The expression of miR‑133b was found to be positively correlated with TAp63. Loss of TAp63 and miR-133b was associated with an increased likelihood of metastatic events. The area under the ROC curve (AUC) of TAp63 for CRC was 0.623 [95% confidence interval (CI), 0.497-0.748; P=0.046], with 73.7% sensitivity and 50% specificity, respectively. The AUC of miR-133b for CRC was 0.857 (95% CI, 0.774‑0.940; P<0.0001), with 78.9% sensitivity and 81.6% specificity, respectively. The combined AUC of TAp63 and miR-133b for CRC was 0.881 (95% CI, 0.805-0.956; P<0.0001), with 89.5% sensitivity and 71.1% specificity, respectively. Point mutations within the seed region of miR-133b were found in 1 patient, but the point mutation did not impact the secondary structure of the pre-miR-133b. Therefore, downregulation of TAp63 may be one reason for the dysregulation of miR‑133b in CRC. The expression analysis of TAp63 and miR-133b revealed that they may be used as valuable prognostic biomarkers for CRC.
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Affiliation(s)
- Yifei Chen
- Department of Gastrointestinal Surgery, The Third XiangYa Hospital of Central South University, Changsha, Hunan 410013, P.R. China
| | - Yi Zhang
- Department of Oncological Surgery, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221000, P.R. China
| | - Jianhuai He
- Department of Breast, Thyroid and Vascular Surgery, Chenzhou No. 1 People's Hospital, Chenzhou, Hunan 423000, P.R. China
| | - Ying Fu
- Department of Gastrointestinal Surgery, The Third XiangYa Hospital of Central South University, Changsha, Hunan 410013, P.R. China
| | - Changwei Lin
- Department of Gastrointestinal Surgery, The Third XiangYa Hospital of Central South University, Changsha, Hunan 410013, P.R. China
| | - Xiaorong Li
- Department of Gastrointestinal Surgery, The Third XiangYa Hospital of Central South University, Changsha, Hunan 410013, P.R. China
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miR-26b inhibits autophagy by targeting ULK2 in prostate cancer cells. Biochem Biophys Res Commun 2016; 472:194-200. [DOI: 10.1016/j.bbrc.2016.02.093] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2016] [Accepted: 02/22/2016] [Indexed: 11/23/2022]
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Wang Y, Sun B, Sun H, Zhao X, Wang X, Zhao N, Zhang Y, Li Y, Gu Q, Liu F, Shao B, An J. Regulation of proliferation, angiogenesis and apoptosis in hepatocellular carcinoma by miR-26b-5p. Tumour Biol 2016; 37:10965-79. [DOI: 10.1007/s13277-016-4964-7] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Accepted: 02/02/2016] [Indexed: 12/28/2022] Open
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Abstract
BACKGROUND Longstanding ulcerative colitis (UC) bears a high risk for development of UC-associated colorectal carcinoma (UCC). The inflammatory microenvironment influences microRNA expression, which in turn deregulates target gene expression. microRNA-26b (miR-26b) was shown to be instrumental in normal tissue growth and differentiation. Thus, we aimed to investigate the impact of miR-26b in inflammation-associated colorectal carcinogenesis. METHODS Two different cohorts of patients were investigated. In the retrospective group, a tissue microarray with 38 samples from 17 UC/UCC patients was used for miR-26b in situ hybridization and quantitative reverse transcription polymerase chain reaction analyses. In the prospective group, we investigated miR-26b expression in 25 fresh-frozen colon biopsies and corresponding serum samples of 6 UC and 15 non-UC patients, respectively. In silico analysis, Ago2-RNA immunoprecipitation, luciferase reporter assay, quantitative reverse transcription polymerase chain reaction examination, and miR-26b mimic overexpression were employed for target validation. RESULTS miR-26b expression was shown to be upregulated with disease progression in tissues and serum of UC and UCC patients. Using miR-26b and Ki-67 expression levels, an UCC was predicted with high accuracy. We identified 4 novel miR-26b targets (DIP1, MDM2, CREBBP, BRCA1). Among them, the downregulation of the E3 ubiquitin ligase DIP1 was closely related to death-associated protein kinase stabilization along the normal mucosa-UC-UCC sequence. In silico functional pathway analysis revealed that the common cellular pathways affected by miR-26b are highly related to cancerogenesis and the development of gastrointestinal diseases. CONCLUSIONS We suggest that miR-26b could serve as a biomarker for inflammation-associated processes in the gastrointestinal system. Because miR-26b expression is downregulated in sporadic colon cancer, it could discriminate between UCC and the sporadic cancer type.
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Yuan B, Yu WY, Dai LS, Gao Y, Ding Y, Yu XF, Chen J, Zhang JB. Expression of microRNA‑26b and identification of its target gene EphA2 in pituitary tissues in Yanbian cattle. Mol Med Rep 2015; 12:5753-61. [PMID: 26252447 PMCID: PMC4581756 DOI: 10.3892/mmr.2015.4192] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2014] [Accepted: 04/22/2015] [Indexed: 01/11/2023] Open
Abstract
microRNAs (miRNAs/miRs) are a class of single-stranded non-coding RNA molecules of 19–24 nucleotides (nt) in length. They are widely expressed in animals, plants, bacteria and viruses. Via specific mRNA complementary pairing of target genes, miRNAs are able to regulate the expression of mRNA levels or inhibit protein translation following transcription. miRNA expression has a time- and space specificity, and it is involved in cell proliferation and differentiation, apoptosis, development, tumor metastasis occurrence and other biological processes. miR-26b is an miRNA of 22 nt and is important in the regulation of cellular processes. With the advancement of molecular biology techniques in recent years, there have been extensive investigations into miR-26b. Numerous studies have observed that miR-26b is involved in early embryonic development, cell proliferation regulation, pituitary hormone secretion and other physiological activities. miRNAs are associated with the function of propagation. The present study used reverse transcription quantitative polymerase chain reaction to detect the relative expression levels of miR-26b in the pituitary tissue of Yanbian cattle at different developmental stages. The 2−ΔΔCt method was used to calculate the relative gene expression levels. The miRNA target gene database TargetScan and RNA22 were used for prediction of the miR-26b target gene and selective recognition was also performed. The results demonstrated that miR-26b is expressed in the pituitary tissues of Yanbian cattle at 6 and 24 months of age. The relative expression levels of miR-26b in the pituitary tissues of 24-month-old Yanbian cattle were 2.41 times that of those in the six-month-old Yanbian cattle, demonstrating significant differences in the relative expression (P<0.01). The relative expression of the candidate target genes, EphA2 and miR-26b, exhibited the opposite expression pattern. The relative expression levels in the pituitary tissues of six-month-old Yanbian cattle were 3.34 times that of those in 24-month-old Yanbian cattle (P<0.01). There are miR-26b binding sites in the 3′-untranslated region (3′-UTR) of EphA2 in bovine, human, murine and other mammalian mRNAs, suggesting that the EphA2 gene may be a target gene of miR-26b. The results of a Luciferase reporter system assay revealed that miR-26b is able to suppress EphA2 expression at the transcription level. Following the site-directed mutagenesis of plasmid EphA2 3′-UTR pmirGLO-MUT- and miR-26b mimic-transfected HeLa cells, the dual-luciferase reporter gene assay revealed that there were three consecutive nucleotide mutations in the 3′-UTR, binding with the predicted seed region. This may have caused the miR-26b inhibition of luciferase activity to decrease from 60% in the wild-type to 26%, suggesting that miR-26b achieved its function via binding with the TACTTGAA sequence of the 3′-UTR in EphA2. In conclusion, the present study successfully assessed the expression pattern of miR-26b in the pituitary tissue of Yanbian cattle, and also confirmed that EphA2 was a target gene of miR-26b in Yanbian cattle in vitro. The present study provided the theoretical basis to further investigate the role of miR-26b in early embryonic development, pituitary hormone secretion and other reproductive functions.
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Affiliation(s)
- Bao Yuan
- Laboratory Animal Center, College of Animal Sciences, Jilin University, Changchun, Jilin 130062, P.R. China
| | - Wang-Yang Yu
- Laboratory Animal Center, College of Animal Sciences, Jilin University, Changchun, Jilin 130062, P.R. China
| | - Li-Sheng Dai
- Laboratory Animal Center, College of Animal Sciences, Jilin University, Changchun, Jilin 130062, P.R. China
| | - Yan Gao
- Laboratory Animal Center, College of Animal Sciences, Jilin University, Changchun, Jilin 130062, P.R. China
| | - Yu Ding
- Laboratory Animal Center, College of Animal Sciences, Jilin University, Changchun, Jilin 130062, P.R. China
| | - Xian-Feng Yu
- Laboratory Animal Center, College of Animal Sciences, Jilin University, Changchun, Jilin 130062, P.R. China
| | - Jian Chen
- Laboratory Animal Center, College of Animal Sciences, Jilin University, Changchun, Jilin 130062, P.R. China
| | - Jia-Bao Zhang
- Laboratory Animal Center, College of Animal Sciences, Jilin University, Changchun, Jilin 130062, P.R. China
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LI LEI, MA HUIQIANG. MicroRNA-216a inhibits the growth and metastasis of oral squamous cell carcinoma by targeting eukaryotic translation initiation factor 4B. Mol Med Rep 2015; 12:3156-62. [DOI: 10.3892/mmr.2015.3761] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2014] [Accepted: 03/23/2015] [Indexed: 11/06/2022] Open
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Luo M, Shen D, Wang W, Xian J. Aberrant expression of microRNA-26b and its prognostic potential in human cervical cancer. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2015; 8:5542-5548. [PMID: 26191262 PMCID: PMC4503133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Accepted: 03/19/2015] [Indexed: 06/04/2023]
Abstract
BACKGROUND microRNA-26b (miR-26b) is reported to be downregulated in many human malignancies and function as a tumor suppressor. However, the roles of miR-26b expression in cervical cancer progression are unclear. The aim of this study was to investigate the clinicopathological or prognostic significance of miR-26b in human cervical cancer. METHODS A cohort of 88 paired of cervical cancer and the adjacent normal cervical epithelial tissues were collected. Quantitative RT-PCR (qRT-PCR) assay was used to detect the expression of miR-26b and its correlations with clinicopathological factors were statistically analyzed. Finally, the survival was assessed by the Kaplan-Meier method and proportional hazards model. RESULTS The expression level of miR-26b in cervical cancer tissues was significantly lower than that in the adjacent normal cervical tissues (P<0.001). Reduced miR-26b was observed to be significantly correlated with advanced FIGO stage, higher incidence of lymph node metastasis and recurrence of cervical cancer patients (P=0.002, 0.036 and 0.029, respectively). In addition, patients with low-miR-26b expression showed poorer recurrence-free survival (RFS) and overall survival (OS) than those with high-miR-26b expression (P=0.0043 and 0.0015, respectively). Furthermore, multivariate analyses demonstrated that low miR-26b expression was an independent prognostic factor for predicting the 5-year RFS and OS of cervical cancer patients (P=0.013 and 0.007, respectively). CONCLUSION Our results showed that reduced miR-26b was correlated with tumor development and poor prognosis in human cervical cancer. The status of miR-26b expression may be a potential prognostic biomarker for cervical cancer patients.
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Affiliation(s)
- Min Luo
- Department of Obstetrics and Gynecology, Guangzhou General Hospital of Guangzhou Military Command111 Liuhua Road, Guangzhou 510010, China
| | - Dongxiang Shen
- Health Cadre Training Center, Guangzhou Military Command111 Liuhua Road, Guangzhou 510010, China
| | - Wei Wang
- Department of Pathology, Guangzhou General Hospital of Guangzhou Military Command111 Liuhua Road, Guangzhou 510010, China
| | - Jiang Xian
- Departemnt of Medical Research, Guangzhou General Hospital of Guangzhou Military Command111 Liuhua Road, Guangzhou 510010, China
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Cernat L, Blaj C, Jackstadt R, Brandl L, Engel J, Hermeking H, Jung A, Kirchner T, Horst D. Colorectal cancers mimic structural organization of normal colonic crypts. PLoS One 2014; 9:e104284. [PMID: 25111606 PMCID: PMC4128715 DOI: 10.1371/journal.pone.0104284] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2014] [Accepted: 07/07/2014] [Indexed: 11/18/2022] Open
Abstract
Colonic crypts are stereotypical structures with distinct stem cell, proliferating, and differentiating compartments. Colorectal cancers derive from colonic crypt epithelia but, in contrast, form morphologically disarrayed glands. In this study, we investigated to which extent colorectal cancers phenocopy colonic crypt architecture and thus preserve structural organization of the normal intestinal epithelium. A subset of colon cancers showed crypt-like compartments with high WNT activity and nuclear β-Catenin at the leading tumor edge, adjacent proliferation, and enhanced Cytokeratin 20 expression in most differentiated tumor epithelia of the tumor center. This architecture strongly depended on growth conditions, and was fully reproducible in mouse xenografts of cultured and primary colon cancer cells. Full crypt-like organization was associated with low tumor grade and was an independent prognostic marker of better survival in a collection of 221 colorectal cancers. Our findings suggest that full activation of preserved intestinal morphogenetic programs in colon cancer requires in vivo growth environments. Furthermore, crypt-like architecture was linked with less aggressive tumor biology, and may be useful to improve current colon cancer grading schemes.
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Affiliation(s)
- Laura Cernat
- Pathologisches Institut, Ludwig-Maximilians-Universität, München, Germany; Victor Babes University of Medicine and Pharmacy, Timisoara, Romania
| | - Cristina Blaj
- Pathologisches Institut, Ludwig-Maximilians-Universität, München, Germany
| | - Rene Jackstadt
- Pathologisches Institut, Ludwig-Maximilians-Universität, München, Germany; Experimentelle und molekulare Pathologie, Pathologisches Institut, Ludwig-Maximilians-Universität, München, Germany
| | - Lydia Brandl
- Pathologisches Institut, Ludwig-Maximilians-Universität, München, Germany
| | - Jutta Engel
- Tumorregister München (TRM), Klinikum der Universität, München, Germany; Institut für medizinische Informationsverarbeitung, Biometrie und Epidemiologie, Ludwig-Maximilians-Universität, München, Germany
| | - Heiko Hermeking
- Pathologisches Institut, Ludwig-Maximilians-Universität, München, Germany; Experimentelle und molekulare Pathologie, Pathologisches Institut, Ludwig-Maximilians-Universität, München, Germany; Deutsches Konsortium für translationale Krebsforschung (DKTK), Heidelberg, Germany; Deutsches Krebsforschungszentrum (DKFZ), Heidelberg, Germany
| | - Andreas Jung
- Pathologisches Institut, Ludwig-Maximilians-Universität, München, Germany; Deutsches Konsortium für translationale Krebsforschung (DKTK), Heidelberg, Germany; Deutsches Krebsforschungszentrum (DKFZ), Heidelberg, Germany
| | - Thomas Kirchner
- Pathologisches Institut, Ludwig-Maximilians-Universität, München, Germany; Deutsches Konsortium für translationale Krebsforschung (DKTK), Heidelberg, Germany; Deutsches Krebsforschungszentrum (DKFZ), Heidelberg, Germany
| | - David Horst
- Pathologisches Institut, Ludwig-Maximilians-Universität, München, Germany
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