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Letelier P, Saldías R, Loren P, Riquelme I, Guzmán N. MicroRNAs as Potential Biomarkers of Environmental Exposure to Polycyclic Aromatic Hydrocarbons and Their Link with Inflammation and Lung Cancer. Int J Mol Sci 2023; 24:16984. [PMID: 38069307 PMCID: PMC10707120 DOI: 10.3390/ijms242316984] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 10/26/2023] [Accepted: 10/28/2023] [Indexed: 12/18/2023] Open
Abstract
Exposure to atmospheric air pollution containing volatile organic compounds such as polycyclic aromatic hydrocarbons (PAHs) has been shown to be a risk factor in the induction of lung inflammation and the initiation and progression of lung cancer. MicroRNAs (miRNAs) are small single-stranded non-coding RNA molecules of ~20-22 nucleotides that regulate different physiological processes, and their altered expression is implicated in various pathophysiological conditions. Recent studies have shown that the regulation of gene expression of miRNAs can be affected in diseases associated with outdoor air pollution, meaning they could also be useful as biomarkers of exposure to environmental pollution. In this article, we review the published evidence on miRNAs in relation to exposure to PAH pollution and discuss the possible mechanisms that may link these compounds with the expression of miRNAs.
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Affiliation(s)
- Pablo Letelier
- Laboratorio de Investigación en Salud de Precisión, Departamento de Procesos Diagnósticos y Evaluación, Facultad de Ciencias de la Salud, Universidad Católica de Temuco, Temuco 4813302, Chile; (R.S.); (N.G.)
| | - Rolando Saldías
- Laboratorio de Investigación en Salud de Precisión, Departamento de Procesos Diagnósticos y Evaluación, Facultad de Ciencias de la Salud, Universidad Católica de Temuco, Temuco 4813302, Chile; (R.S.); (N.G.)
| | - Pía Loren
- Center of Molecular Biology and Pharmacogenetics, Scientific and Technological Bioresource Nucleus, Universidad de La Frontera, Temuco 4811230, Chile;
| | - Ismael Riquelme
- Institute of Biomedical Sciences, Faculty of Health Sciences, Universidad Autónoma de Chile, Temuco 4810101, Chile;
| | - Neftalí Guzmán
- Laboratorio de Investigación en Salud de Precisión, Departamento de Procesos Diagnósticos y Evaluación, Facultad de Ciencias de la Salud, Universidad Católica de Temuco, Temuco 4813302, Chile; (R.S.); (N.G.)
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Yang T, Han Y, Chen J, Liang X, Sun L. MiR-506 Promotes Antitumor Immune Response in Pancreatic Cancer by Reprogramming Tumor-Associated Macrophages toward an M1 Phenotype. Biomedicines 2023; 11:2874. [PMID: 38001876 PMCID: PMC10669181 DOI: 10.3390/biomedicines11112874] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 10/03/2023] [Accepted: 10/10/2023] [Indexed: 11/26/2023] Open
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is a highly malignant cancer with a poor prognosis, and effective treatments for PDAC are lacking. In this study, we hypothesized that miR-506 promotes antitumor immune response in PDAC by reprogramming tumor-associated macrophages toward an M1 phenotype to reverse its immunosuppressive tumor microenvironment (TME). First, the relationship between TME and the expression of miR-506 was assessed using clinical samples. Our results provided evidence that lower expression of miR-506 was associated with poor prognosis and immunosuppressive TME in PDAC patients. In addition, miR-506 inhibit the PDAC progression and reversed its immunosuppressive microenvironment in a macrophage-dependent manner. Next, we established a PDAC mouse model by orthotopic injection to further explore the role of miR-506 in vivo. Mechanistic investigations demonstrated that miR-506 could reprogram the polarization of M2-like macrophages toward an M1-like phenotype through targeting STAT3. Meanwhile, miR-506 could also sensitize PDAC to anti-PD-1 immunotherapy, because the tumor microenvironment remodeling effects of miR-506 could reprogram macrophage polarization and subsequently promote cytotoxic T lymphocyte (CTL) infiltration. These findings suggest a relationship between miR-506 and TME, especially M2-like macrophages, thus providing novel insights into mechanisms of tumor progression and potential immunotherapeutic targets for further clinical treatment.
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Affiliation(s)
| | | | | | | | - Longhao Sun
- Department of General Surgery, Tianjin Medical University General Hospital, Tianjin 300052, China (X.L.)
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ShokriShokri F, Mozdarani H, Omrani MD. Rel-A/PACER/miR 7 Axis May Play a Role in Radiotherapy Treatment in Breast Cancer Patients. IRANIAN BIOMEDICAL JOURNAL 2023; 27:173-82. [PMID: 37507347 PMCID: PMC10507291 DOI: 10.61186/ibj.3901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Accepted: 05/06/2023] [Indexed: 12/17/2023]
Abstract
Background Radiotherapy has become the standard form of treatment for breast cancer (BC). Radioresistance is an issue that limits the effectiveness of radiotherapy (RT). Therefore, predictive biomarkers are needed to choose the appropriate RT for the patient. Activation of the proinflammatory transcription factor, nuclear factor-kappa B (NF-κB), is a frequently noted pathway in BC. Investigating the relationship between RT and alterations in gene expression involved in the immune pathway can help better control the disease. This research investigated the impact of RT on the expression levels of Rel-A, PACER, and miR-7 within the NF-κB signaling pathway. Methods Blood samples (n = 15) were obtained from BC patients during four different time intervals: 72 hours prior to initiating RT, as well as one, two, and four weeks following RT completion. Samples were also collected from 20 healthy women who had no immune or cancer-related diseases. Blood RNA was extracted, and complementary DNA was synthesized. Gene expression level was determined using R real-time polymerase chain reaction (RT-PCR). Results There was a significant difference in the expression level of Rel-A between patients and normal individual blood samples (p < 0.05). After four weeks of RT, qRT-PCR revealed a significant downregulation of miR-7 and upregulation of Rel-A and PACER in BC patients. Also, there was a significant association between Rel-A expression and monocyte numbers during RT (p < 0.001). Conclusion The expression level of PACER, miR-7 and Rel-A, changed after RT; therefore, these genes could be used as diagnostic and therapeutic RT markers in BC.
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Affiliation(s)
- Fazlollah ShokriShokri
- Department of Medical Genetics, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran;
| | - Hossein Mozdarani
- Department of Medical Genetics, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran;
| | - Mir Davood Omrani
- Urogenital Stem Cell Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Das DN, Ravi N. Influences of polycyclic aromatic hydrocarbon on the epigenome toxicity and its applicability in human health risk assessment. ENVIRONMENTAL RESEARCH 2022; 213:113677. [PMID: 35714684 DOI: 10.1016/j.envres.2022.113677] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 06/08/2022] [Accepted: 06/10/2022] [Indexed: 06/15/2023]
Abstract
The existence of polycyclic aromatic hydrocarbons (PAHs) in ambient air is an escalating concern worldwide because of their ability to cause cancer and induce permanent changes in the genetic material. Growing evidence implies that during early life-sensitive stages, the risk of progression of acute and chronic diseases depends on epigenetic changes initiated by the influence of environmental cues. Several reports deciphered the relationship between exposure to environmental chemicals and epigenetics, and have known toxicants that alter the epigenetic states. Amongst PAHs, benzo[a]pyrene (B[a]P) is accepted as a group 1 cancer-causing agent by the International Agency for the Research on Cancer (IARC). B[a]P is a well-studied pro-carcinogen that is metabolically activated by the aryl hydrocarbon receptor (AhR)/cytochrome P450 pathway. Cytochrome P450 plays a pivotal role in the stimulation step, which is essential for DNA adduct formation. Accruing evidence suggests that epigenetic alterations assume a fundamental part in PAH-promoted carcinogenesis. This interaction between PAHs and epigenetic factors results in an altered profile of these marks, globally and locus-specific. Some of the epigenetic changes due to exposure to PAHs lead to increased disease susceptibility and progression. It is well understood that exposure to environmental carcinogens, such as PAH triggers disease pathways through changes in the genome. Several evidence reported due to the epigenome-wide association studies, that early life adverse environmental events may trigger widespread and persistent variations in transcriptional profiling. Moreover, these variations respond to DNA damage and/or a consequence of epigenetic modifications that need further investigation. Growing evidence has associated PAHs with epigenetic variations involving alterations in DNA methylation, histone modification, and micro RNA (miRNA) regulation. Epigenetic alterations to PAH exposure were related to chronic diseases, such as pulmonary disease, cardiovascular disease, endocrine disruptor, nervous system disorder, and cancer. This hormetic response gives a novel perception concerning the toxicity of PAHs and the biological reaction that may be a distinct reliance on exposure. This review sheds light on understanding the latest evidence about how PAHs can alter epigenetic patterns and human health. In conclusion, as several epigenetic change mechanisms remain unclear yet, further analyses derived from PAHs exposure must be performed to find new targets and disease biomarkers. In spite of the current limitations, numerous evidence supports the perception that epigenetics grips substantial potential for advancing our knowledge about the molecular mechanisms of environmental toxicants, also for predicting health-associated risks due to environmental circumstances exposure and individual susceptibility.
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Affiliation(s)
- Durgesh Nandini Das
- Department of Ophthalmology and Visual Sciences, Washington University in St. Louis, St. Louis, MO, 63110, USA
| | - Nathan Ravi
- Department of Ophthalmology and Visual Sciences, Washington University in St. Louis, St. Louis, MO, 63110, USA; Department of Energy, Environmental & Chemical Engineering, Washington University in St. Louis, St. Louis, MO, 63130, USA; Institute for Public Health, Washington University in St. Louis, St. Louis, MO, 63110, USA; Veterans Affairs St. Louis Hospital, St. Louis, MO, 63106, USA.
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Murugan D, Rangasamy L. A perspective to weaponize microRNAs against lung cancer. Noncoding RNA Res 2022; 8:18-32. [PMID: 36262424 PMCID: PMC9556932 DOI: 10.1016/j.ncrna.2022.09.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 09/25/2022] [Accepted: 09/26/2022] [Indexed: 12/02/2022] Open
Abstract
microRNAs are regulatory RNAs that silence specific mRNA by binding to it, inducing translational repression. Over the recent decades since the discovery of RNA interference, the field of microRNA therapeutics has expanded tremendously. The role of miRNAs in disease development has attracted researchers to investigate their potential in therapeutics. In lung cancer, multiple miRNAs are deregulated, and their involvement is observed in cell proliferation, immunomodulation, angiogenesis, and epithelial-mesenchymal transition. Thus, synthetic oligonucleotides are developed to downregulate the overexpressed miRNA or to upregulate the repressed miRNA. However, their clinical efficiency is limited due to the requirement for an effective delivery strategy. Advances in the current understanding of nanotechnology, biomaterial science, and disease molecular pathology have increased the chances of overcoming the limitations of miRNA-based therapy. This review enlists downregulated and upregulated miRNAs in lung cancer. This review also highlights the major contributions to miRNA-based therapeutics for lung cancer and strategies to overcome endosomal barriers. It also attempts to understand the nuances between current advancements in delivery methods, advantages, disadvantages, and practical issues for the large-scale development of miRNA-based therapeutics. Multiple miRNAs are deregulated in lung cancer, and they are involved in tumor progression. Synthetic oligonucleotides downregulate the overexpressed miRNA or to upregulate the repressed miRNA. This review also highlights the major contributions to miRNA-based therapeutics for lung cancer. It also attempts to understand the nuances between current advancements in delivery methods, advantages, disadvantages, and practical issues for the large-scale development of miRNA-based therapeutics.
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Affiliation(s)
- Dhanashree Murugan
- Drug Discovery Unit (DDU), Centre for Biomaterials, Cellular, and Molecular Theranostics (CBCMT), Vellore Institute of Technology (VIT), Vellore, 632014, Tamil Nadu, India
- School of Biosciences & Technology (SBST), Vellore Institute of Technology (VIT), Vellore, 632014, Tamil Nadu, India
| | - Loganathan Rangasamy
- Drug Discovery Unit (DDU), Centre for Biomaterials, Cellular, and Molecular Theranostics (CBCMT), Vellore Institute of Technology (VIT), Vellore, 632014, Tamil Nadu, India
- Corresponding author.
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Piergentili R, Basile G, Nocella C, Carnevale R, Marinelli E, Patrone R, Zaami S. Using ncRNAs as Tools in Cancer Diagnosis and Treatment-The Way towards Personalized Medicine to Improve Patients' Health. Int J Mol Sci 2022; 23:ijms23169353. [PMID: 36012617 PMCID: PMC9409241 DOI: 10.3390/ijms23169353] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 08/14/2022] [Accepted: 08/16/2022] [Indexed: 12/06/2022] Open
Abstract
Although the first discovery of a non-coding RNA (ncRNA) dates back to 1958, only in recent years has the complexity of the transcriptome started to be elucidated. However, its components are still under investigation and their identification is one of the challenges that scientists are presently facing. In addition, their function is still far from being fully understood. The non-coding portion of the genome is indeed the largest, both quantitatively and qualitatively. A large fraction of these ncRNAs have a regulatory role either in coding mRNAs or in other ncRNAs, creating an intracellular network of crossed interactions (competing endogenous RNA networks, or ceRNET) that fine-tune the gene expression in both health and disease. The alteration of the equilibrium among such interactions can be enough to cause a transition from health to disease, but the opposite is equally true, leading to the possibility of intervening based on these mechanisms to cure human conditions. In this review, we summarize the present knowledge on these mechanisms, illustrating how they can be used for disease treatment, the current challenges and pitfalls, and the roles of environmental and lifestyle-related contributing factors, in addition to the ethical, legal, and social issues arising from their (improper) use.
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Affiliation(s)
- Roberto Piergentili
- Institute of Molecular Biology and Pathology, Italian National Research Council (CNR-IBPM), 00185 Rome, Italy
| | - Giuseppe Basile
- Trauma Unit and Emergency Department, IRCCS Galeazzi Orthopedics Institute, 20161 Milan, Italy
- Head of Legal Medicine Unit, Clinical Institute San Siro, 20148 Milan, Italy
| | - Cristina Nocella
- Department of Clinical Internal, Anaesthesiological and Cardiovascular Sciences, “Sapienza” University of Rome, Viale del Policlinico, 155, 00161 Rome, Italy
| | - Roberto Carnevale
- Department of Medico-Surgical Sciences and Biotechnologies, “Sapienza” University of Rome, 04100 Latina, Italy
- Mediterranea Cardiocentro-Napoli, Via Orazio, 80122 Naples, Italy
| | - Enrico Marinelli
- Department of Medico-Surgical Sciences and Biotechnologies, “Sapienza” University of Rome, 04100 Latina, Italy
- Correspondence:
| | - Renato Patrone
- PhD ICTH, University of Federico II, HPB Department INT F. Pascale IRCCS of Naples, Via Mariano Semmola, 80131 Naples, Italy
| | - Simona Zaami
- Department of Anatomical, Histological, Forensic and Orthopedic Sciences, Section of Forensic Medicine, “Sapienza” University of Rome, 00161 Rome, Italy
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Ahmadi A, Bayatiani MR, Seif F, Ansari J, Rashidi P, Moghadasi M, Etemadi M. Evaluation of Radiotherapy on miR-374 Gene Expression in Colorectal Cancer Patient Blood Samples. Rep Biochem Mol Biol 2022; 10:614-621. [PMID: 35291612 PMCID: PMC8903365 DOI: 10.52547/rbmb.10.4.614] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Accepted: 04/24/2021] [Indexed: 06/14/2023]
Abstract
BACKGROUND Current cancer treatments include surgery, radiotherapy, chemotherapy, and immunotherapy. Despite these treatments, a main issue in cancer treatment is early detection. microRNAs (miRNAs) can be used as markers to diagnose and treat cancers. This study investigated the effect of radiotherapy on miR-374 expression, and APC and GSK-3β, two of its target genes, in the WNT pathway, in peripheral blood samples from radiotherapy-treated colorectal cancer (CRC) patients. METHODS Peripheral blood was collected from 25 patients before and after radiotherapy. RNA was extracted from the blood and cDNA synthesized. miR-374, APC, and GSK-3β expression was determined by real-time polymerase chain reaction (RT-PCR) and the amplicons were sequenced. Finally, the data were statistically evaluated. RESULTS Quantitative RT-PCR revealed significant down-regulation of miR-374 (0.63-fold) and up-regulation of APC (1.12-fold) and GSK-3β (1.22-fold) in CRC patients after five weeks of radiotherapy. Sequencing of PCR-produced amplicons confirmed the conservation of mature and precursor sequences encoding miR-374. miR-374 expression changed with time after radiotherapy treatment and related tumor grading. Increased age and tumor grade positively correlated with decreased miR-374 expression. CONCLUSION miR-374 expression, and that of its two target genes, APC and GSK-3β, changed after radiotherapy. These genes can likely be used as diagnostic radiotherapy markers in CRC.
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Affiliation(s)
- Azam Ahmadi
- Infectious Diseases Research Center (IDRC), Arak University of Medical Sciences, Arak, Iran.
| | - Mohammad Reza Bayatiani
- Department of Medical Physics and Radiotherapy, Arak University of Medical Sciences and Khansari Hospital, Arak, Iran.
| | - Fatemeh Seif
- Department of Medical Physics and Radiotherapy, Arak University of Medical Sciences and Khansari Hospital, Arak, Iran.
| | - Jamshid Ansari
- Department of Medical Physics and Radiotherapy, Arak University of Medical Sciences and Khansari Hospital, Arak, Iran.
| | - Parisa Rashidi
- Department of Medical Physics and Radiotherapy, Arak University of Medical Sciences and Khansari Hospital, Arak, Iran.
| | - Mona Moghadasi
- Students Research Committee, Arak University of Medical Sciences, Arak, Iran.
| | - Mobarakeh Etemadi
- Students Research Committee, Arak University of Medical Sciences, Arak, Iran.
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Bukowska B, Sicińska P. Influence of Benzo(a)pyrene on Different Epigenetic Processes. Int J Mol Sci 2021; 22:ijms222413453. [PMID: 34948252 PMCID: PMC8707600 DOI: 10.3390/ijms222413453] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 11/28/2021] [Accepted: 12/13/2021] [Indexed: 12/13/2022] Open
Abstract
Epigenetic changes constitute one of the processes that is involved in the mechanisms of carcinogenicity. They include dysregulation of DNA methylation processes, disruption of post-translational patterns of histone modifications, and changes in the composition and/or organization of chromatin. Benzo(a)pyrene (BaP) influences DNA methylation and, depending on its concentrations, as well as the type of cell, tissue and organism it causes hypomethylation or hypermethylation. Moreover, the exposure to polyaromatic hydrocarbons (PAHs), including BaP in tobacco smoke results in an altered methylation status of the offsprings. Researches have indicated a potential relationship between toxicity of BaP and deregulation of the biotin homeostasis pathway that plays an important role in the process of carcinogenesis. Animal studies have shown that parental-induced BaP toxicity can be passed on to the F1 generation as studied on marine medaka (Oryzias melastigma), and the underlying mechanism is likely related to a disturbance in the circadian rhythm. In addition, ancestral exposure of fish to BaP may cause intergenerational osteotoxicity in non-exposed F3 offsprings. Epidemiological studies of lung cancer have indicated that exposure to BaP is associated with changes in methylation levels at 15 CpG; therefore, changes in DNA methylation may be considered as potential mediators of BaP-induced lung cancer. The mechanism of epigenetic changes induced by BaP are mainly due to the formation of CpG-BPDE adducts, between metabolite of BaP-BPDE and CpG, which leads to changes in the level of 5-methylcytosine. BaP also acts through inhibition of DNA methyltransferases activity, as well as by increasing histone deacetylases HDACs, i.e., HDAC2 and HDAC3 activity. The aim of this review is to discuss the mechanism of the epigenetic action of BaP on the basis of the latest publications.
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MicroRNA-4458 Regulates PD-L1 Expression to Enhance Anti-tumor Immunity in NSCLC via Targeting STAT3. Mol Biotechnol 2021; 63:1268-1279. [PMID: 34386930 DOI: 10.1007/s12033-021-00379-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Accepted: 08/06/2021] [Indexed: 01/17/2023]
Abstract
MicroRNA-4458 (miR-4458) has been reported to be associated with several cancers including non-small-cell lung cancer (NSCLC), while its role in tumor immunity remains unclear. The purpose of the current research was to explore the anti-tumor immunity of miR-4458 in NSCLC. The results showed that the expression level of miR-4458 decreased and STAT3 increased in NSCLC tissues and cells. For in vitro experiments, miR-4458 mimics suppressed cell proliferation and decreased the expression level of PD-L1. Moreover, STAT3 was confirmed as a target gene of miR-4458. Upregulation of STAT3 level ameliorated the inhibitive effects of miR-4458 on cells proliferation and PD-L1 expression in cells. For in vivo studies, overexpression of miR-4458 hindered tumor growth, decreased the proportion of PD-1+ T cells, the expression of PD-L1 and IL-10, upregulated the proportion of CD4+ T, CD8+ T cells as well as the expression of IFN-γ and IL-2, which were all reversed by overexpression of STAT3, and the effects of STAT3 were counteracted after knockdown of PD-L1. MiR-4458 overexpression enhanced anti-tumor immunity via targeting STAT3 to block the PD-L1/PD-1 pathway.
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Stading R, Gastelum G, Chu C, Jiang W, Moorthy B. Molecular mechanisms of pulmonary carcinogenesis by polycyclic aromatic hydrocarbons (PAHs): Implications for human lung cancer. Semin Cancer Biol 2021; 76:3-16. [PMID: 34242741 DOI: 10.1016/j.semcancer.2021.07.001] [Citation(s) in RCA: 79] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 07/01/2021] [Accepted: 07/02/2021] [Indexed: 01/04/2023]
Abstract
Lung cancer has the second highest incidence and highest mortality compared to all other cancers. Polycyclic aromatic hydrocarbon (PAH) molecules belong to a class of compounds that are present in tobacco smoke, diesel exhausts, smoked foods, as well as particulate matter (PM). PAH-derived reactive metabolites are significant contributors to lung cancer development. The formation of these reactive metabolites entails metabolism of the parent PAHs by cytochrome P4501A1/1B1 (CYP1A1/1B1) and epoxide hydrolase enzymes. These reactive metabolites then react with DNA to form DNA adducts, which contribute to key gene mutations, such as the tumor suppressor gene, p53 and are linked to pulmonary carcinogenesis. PAH exposure also leads to upregulation of CYP1A1 transcription by binding to the aryl hydrocarbon receptor (AHR) and eliciting transcription of the CYP1A1 promoter, which comprises specific xenobiotic-responsive element (XREs). While hepatic and pulmonary CYP1A1/1B1 metabolize PAHs to DNA-reactive metabolites, the hepatic CYP1A2, however, may protect against lung tumor development by suppressing both liver and lung CYP1A1 enzymes. Further analysis of these enzymes has shown that PAH-exposure also induces sustained transcription of CYP1A1, which is independent of the persistence of the parent PAH. CYP1A2 enzyme plays an important role in the sustained induction of hepatic CYP1A1. PAH exposure may further contribute to pulmonary carcinogenesis by producing epigenetic alterations. DNA methylation, histone modification, long interspersed nuclear element (LINE-1) activation, and non-coding RNA, specifically microRNA (miRNA) alterations may all be induced by PAH exposure. The relationship between PAH-induced enzymatic reactive metabolite formation and epigenetic alterations is a key area of research that warrants further exploration. Investigation into the potential interplay between these two mechanisms may lead to further understanding of the mechanisms of PAH carcinogenesis. These mechanisms will be crucial for the development of effective targeted therapies and early diagnostic tools.
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Affiliation(s)
- Rachel Stading
- Section of Neonatology, Department of Pediatrics, Baylor College of Medicine, Texas Children's Hospital, Houston, TX, United States
| | - Grady Gastelum
- Section of Neonatology, Department of Pediatrics, Baylor College of Medicine, Texas Children's Hospital, Houston, TX, United States
| | - Chun Chu
- Section of Neonatology, Department of Pediatrics, Baylor College of Medicine, Texas Children's Hospital, Houston, TX, United States
| | - Weiwu Jiang
- Section of Neonatology, Department of Pediatrics, Baylor College of Medicine, Texas Children's Hospital, Houston, TX, United States
| | - Bhagavatula Moorthy
- Section of Neonatology, Department of Pediatrics, Baylor College of Medicine, Texas Children's Hospital, Houston, TX, United States.
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Liu XL, Liu WJ, Chen Q, Liu J, Yang CQ, Zhang G, Zhang SL, Guo WH, Li JB, Zhao G, Yin DC, Zhang CY. miR-506-loaded gelatin nanospheres target PENK and inactivate the ERK/Fos signaling pathway to suppress triple-negative breast cancer aggressiveness. Mol Carcinog 2021; 60:538-555. [PMID: 34062009 DOI: 10.1002/mc.23310] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 05/07/2021] [Accepted: 05/09/2021] [Indexed: 12/13/2022]
Abstract
Triple-negative breast cancer (TNBC) is the most malignant subtype of breast cancer. Some microRNAs (miRNAs) were abnormally expressed in TNBC, and they are closely related to the occurrence and progression of TNBC. Here, we found that miR-506 was significantly downregulated in TNBC and relatively lower miR-506 expression predicted a poorer prognosis. Moreover, we found that miR-506 could inhibit MDA-MB-231 cell viability, colony formation, migration, and invasion, and suppress the ERK/Fos oncogenic signaling pathway through upregulating its direct target protein proenkephalin (PENK). Therefore, miR-506 was proposed as a nucleic acid drug for TNBC therapy. However, miRNA is unstable in vivo, which limiting its application as a therapeutic drug via conventional oral or injected therapies. Here, a gelatin nanosphere (GN) delivery system was applied for the first time to load exogenous miRNA. Exogenous miR-506 mimic was loaded on GNs and injected into the in situ TNBC animal model, and the miR-506 could achieve sustained and controlled release. The results confirmed that overexpression of miR-506 and PENK in vivo through loading on GNs inhibited in situ triple-negative breast tumor growth and metastasis significantly in the xenograft model. Moreover, we indicated that the ERK/Fos signaling pathway was intensively inactivated after overexpression of miR-506 and PENK both in vitro and in vivo, which was further validated by the ERK1/2-specific inhibitor SCH772984. In conclusion, this study demonstrates that miR-506-loaded GNs have great potential in anti-TNBC aggressiveness therapy.
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Affiliation(s)
- Xin-Li Liu
- Institute for Special Environmental Biophysics, Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China
| | - Wen-Jing Liu
- Institute for Special Environmental Biophysics, Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China
| | - Qiang Chen
- State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an, China
| | - Jie Liu
- Institute for Special Environmental Biophysics, Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China
| | - Chang-Qing Yang
- Institute for Special Environmental Biophysics, Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China
| | - Ge Zhang
- Institute for Special Environmental Biophysics, Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China
| | - Shi-Long Zhang
- Institute for Special Environmental Biophysics, Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China
| | - Wei-Hong Guo
- Institute for Special Environmental Biophysics, Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China
| | - Jing-Bao Li
- Institute for Special Environmental Biophysics, Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China
| | - Gang Zhao
- Breast Surgery, The First Hospital of Jilin University, Changchun, China
| | - Da-Chuan Yin
- Institute for Special Environmental Biophysics, Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China
| | - Chen-Yan Zhang
- Institute for Special Environmental Biophysics, Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China
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The Circ_CARM1 controls cell migration by regulating CTNNBIP1 in anti-benzo[a]pyrene-trans-7,8-dihydrodiol-9,10-epoxide-transformed 16HBE cells. Toxicol Lett 2021; 348:40-49. [PMID: 34052308 DOI: 10.1016/j.toxlet.2021.05.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 03/10/2021] [Accepted: 05/25/2021] [Indexed: 01/15/2023]
Abstract
BACKGROUND Circular RNAs (circRNAs) have an important role in the development and progression of human tumors, including lung cancer. Yet, their role in lung cancer induced by benzo(a)pyrene (B[a]P) remains unclear. In this study, circRNA chips and qRT-PCR were used to examine downregulated circRNAs in malignantly transformed 16HBE cells (16HBE-T) induced by B[a]P. Five down-regulated circRNAs were found, among which hsa_circ_0004552 (circ_CARM1) had the most significant downregulation. Consequently, the role of circ_CARM1 on 16HBE-T cells biological behavior was further examined using several in vitro experiments. MATERIALS AND METHODS Detecting RNA expression via qRT-PCR. Fluorescence in situ hybridization (FISH) was used to identify the localization of circ_CARM1 in 16HBE-T. The effect of circ_CARM1 on cell behavior (cell migration, proliferation, and apoptosis) was explored by transfecting cells with a vector carrying an overexpression and then using wound healing, transwell migration assay, and flow cytometry. Also, the regulation mechanism for circ_CARM1, miR-1288-3p, and CTNNBIP1 was studied by Dual-Luciferase® Reporter (DLR™) Assay System and western blotting. RESULTS Reduced expression of circ_CARM1 is observed in 16HBE-T. The overexpression of circ_CARM1 further inhibited the migration of 16HBE-T cells but did not affect cell proliferation and apoptosis. Furthermore, bioinformatic analysis and Dual-Luciferase® Reporter (DLR™) Assay System showed that the competitive binding of circ_CARM1 and miR-1288-3p enhanced the expression of CTNNBIP1, thereby inhibiting the migration of 16HBE-T cells. CONCLUSION Downregulation of circ_CARM1 can stimulate the expression of miR-1288-3p, thereby reducing the expression of CTNNBIP1, spurring cell migration.
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Haque I, Kawsar HI, Motes H, Sharma M, Banerjee S, Banerjee SK, Godwin AK, Huang CH. Downregulation of miR-506-3p Facilitates EGFR-TKI Resistance through Induction of Sonic Hedgehog Signaling in Non-Small-Cell Lung Cancer Cell Lines. Int J Mol Sci 2020; 21:E9307. [PMID: 33291316 PMCID: PMC7729622 DOI: 10.3390/ijms21239307] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 12/04/2020] [Accepted: 12/04/2020] [Indexed: 02/08/2023] Open
Abstract
Non-small-cell lung cancer (NSCLC) patients with epidermal growth factor receptor (EGFR) mutation eventually develop resistance to EGFR-targeted tyrosine kinase inhibitors (TKIs). Treatment resistance remains the primary obstacle to the successful treatment of NSCLC. Although drug resistance mechanisms have been studied extensively in NSCLC, the regulation of these mechanisms has not been completely understood. Recently, increasing numbers of microRNAs (miRNAs) are implicated in EGFR-TKI resistance, indicating that miRNAs may serve as novel targets and may hold promise as predictive biomarkers for anti-EGFR therapy. MicroRNA-506 (miR-506) has been identified as a tumor suppressor in many cancers, including lung cancer; however, the role of miR-506 in lung cancer chemoresistance has not yet been addressed. Here we report that miR-506-3p expression was markedly reduced in erlotinib-resistant (ER) cells. We identified Sonic Hedgehog (SHH) as a novel target of miR-506-3p, aberrantly activated in ER cells. The ectopic overexpression of miR-506-3p in ER cells downregulates SHH signaling, increases E-cadherin expression, and inhibits the expression of vimentin, thus counteracting the epithelial-mesenchymal transition (EMT)-mediated chemoresistance. Our results advanced our understanding of the molecular mechanisms underlying EGFR-TKI resistance and indicated that the miR-506/SHH axis might represent a novel therapeutic target for future EGFR mutated lung cancer treatment.
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Affiliation(s)
- Inamul Haque
- Cancer Research Unit, Veterans Affairs Medical Center, Kansas City, MO 64128, USA; (H.M.); (S.B.); (S.K.B.)
- Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA;
| | - Hameem I. Kawsar
- Division of Medical Oncology, University of Kansas Medical Center, Kansas City, KS 66160, USA;
| | - Hannah Motes
- Cancer Research Unit, Veterans Affairs Medical Center, Kansas City, MO 64128, USA; (H.M.); (S.B.); (S.K.B.)
- Kirksville College of Osteopathic Medicine, Andrew Taylor Still University, Jefferson St, Kirksville, MO 63501, USA
| | - Mukut Sharma
- Research Service, Veterans Affairs Medical Center, Kansas City, MO 64128, USA;
| | - Snigdha Banerjee
- Cancer Research Unit, Veterans Affairs Medical Center, Kansas City, MO 64128, USA; (H.M.); (S.B.); (S.K.B.)
- Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA;
| | - Sushanta K. Banerjee
- Cancer Research Unit, Veterans Affairs Medical Center, Kansas City, MO 64128, USA; (H.M.); (S.B.); (S.K.B.)
- Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA;
| | - Andrew K. Godwin
- Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA;
| | - Chao H. Huang
- Cancer Research Unit, Veterans Affairs Medical Center, Kansas City, MO 64128, USA; (H.M.); (S.B.); (S.K.B.)
- Division of Medical Oncology, University of Kansas Medical Center, Kansas City, KS 66160, USA;
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14
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Birkett N, Al-Zoughool M, Bird M, Baan RA, Zielinski J, Krewski D. Overview of biological mechanisms of human carcinogens. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART B, CRITICAL REVIEWS 2019; 22:288-359. [PMID: 31631808 DOI: 10.1080/10937404.2019.1643539] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
This review summarizes the carcinogenic mechanisms for 109 Group 1 human carcinogens identified as causes of human cancer through Volume 106 of the IARC Monographs. The International Agency for Research on Cancer (IARC) evaluates human, experimental and mechanistic evidence on agents suspected of inducing cancer in humans, using a well-established weight of evidence approach. The monographs provide detailed mechanistic information about all carcinogens. Carcinogens with closely similar mechanisms of action (e.g. agents emitting alpha particles) were combined into groups for the review. A narrative synopsis of the mechanistic profiles for the 86 carcinogens or carcinogen groups is presented, based primarily on information in the IARC monographs, supplemented with a non-systematic review. Most carcinogens included a genotoxic mechanism.
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Affiliation(s)
- Nicholas Birkett
- School of Epidemiology and Public Health, University of Ottawa, Ottawa, Ontario, Canada
- McLaughlin Centre for Population Health Risk Assessment, Faculty of Medicine, University of Ottawa, Ottawa, Canada
| | - Mustafa Al-Zoughool
- Department of Community and Environmental Health, King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
| | - Michael Bird
- McLaughlin Centre for Population Health Risk Assessment, Faculty of Medicine, University of Ottawa, Ottawa, Canada
| | - Robert A Baan
- International Agency for Research on Cancer, Lyon, France
| | - Jan Zielinski
- School of Epidemiology and Public Health, University of Ottawa, Ottawa, Ontario, Canada
- McLaughlin Centre for Population Health Risk Assessment, Faculty of Medicine, University of Ottawa, Ottawa, Canada
| | - Daniel Krewski
- School of Epidemiology and Public Health, University of Ottawa, Ottawa, Ontario, Canada
- McLaughlin Centre for Population Health Risk Assessment, Faculty of Medicine, University of Ottawa, Ottawa, Canada
- Risk Sciences International, Ottawa, Canada
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15
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Gao C, Hu S. miR-506 is a YAP1-dependent tumor suppressor in laryngeal squamous cell carcinoma. Cancer Biol Ther 2019; 20:826-836. [PMID: 30907227 DOI: 10.1080/15384047.2018.1564569] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
Abstract
Laryngeal squamous cell carcinoma (LSCC) accounts for 95% of laryngeal cancer incidence. Tobacco use has been shown to have a linear association with the development of the disease. While early diagnosis and treatment of LSCC are critical in improving the 5-year survival rate and quality of life, diagnosis of early-stage LSCC remains challenging because of the unapparent symptoms. Here, we report that miR-506, a critical regulator in many types of cancers, is aberrantly suppressed in LSCC patient tissues and cultured cancer cells. This is likely responsible for the enhanced production of YAP1 protein, a transcriptional factor that is well known for its oncogenic roles in LSCC malignancy. Statistical analysis has confirmed that the expression levels of miR-506 and YAP1 are strongly correlated with the malignant statuses of patient tumors. Restoring the expression level of miR-506 in cultured LSCC cells significantly inhibited proliferation, migration and invasion of the cells. The miR-506 and YAP1 regulatory network seems to affect at least pathways involved in apoptosis. Our study, for the first time, has demonstrated a tumor suppressive role of miR-506 in LSCC. This opens new opportunities for further exploring the molecular details of the development of the disease and thus will facilitate the development of novel diagnosis and therapeutic strategies.
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Affiliation(s)
- Changhui Gao
- a Department of Otolaryngology Head and Neck Surgery , the First Affiliated Hospital of Zhengzhou University , Zhengzhou City , Henan Province , P. R. China
| | - Shousen Hu
- a Department of Otolaryngology Head and Neck Surgery , the First Affiliated Hospital of Zhengzhou University , Zhengzhou City , Henan Province , P. R. China
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16
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Li J, Ju J, Ni B, Wang H. The emerging role of miR-506 in cancer. Oncotarget 2018; 7:62778-62788. [PMID: 27542202 PMCID: PMC5308765 DOI: 10.18632/oncotarget.11294] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Accepted: 08/10/2016] [Indexed: 12/25/2022] Open
Abstract
MicroRNAs (miRNAs) are small non-coding RNAs that post-transcriptionally regulate gene expression. They are involved in almost all biological processes, and many have been identified as potential oncogenes or tumor suppressor genes. miR-506 was recently discovered to play pivotal roles in regulating cell proliferation, differentiation, migration and invasion. Dysregulation of miR-506 has been demonstrated in multiple types of cancers; however, whether it functions as an oncogene or a tumor suppressor seems to be context-dependent. Altered miR-506 expression in cancer is caused by promoter methylation and changes in upstream transcription factors. In this review, we summarize the current understanding of the diverse roles and underlying mechanisms of miR-506 and its involvement in cancer, and suggest the potential therapeutic strategy based on miR-506.
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Affiliation(s)
- Jian Li
- Institute of Hepatopancreatobiliary Surgery, Southwest Hospital, Third Military Medical University, Chongqing, PR China
| | - Jingfang Ju
- Translational Research Laboratory, Department of Pathology, Stony Brook University, Stony Brook, NY, USA
| | - Bing Ni
- Department of Pathophysiology and High Altitude Pathology, Third Military Medical University, Chongqing, PR China
| | - Huaizhi Wang
- Institute of Hepatopancreatobiliary Surgery, Southwest Hospital, Third Military Medical University, Chongqing, PR China
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17
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Guo S, Yang P, Jiang X, Li X, Wang Y, Zhang X, Sun B, Zhang Y, Jia Y. Genetic and epigenetic silencing of mircoRNA-506-3p enhances COTL1 oncogene expression to foster non-small lung cancer progression. Oncotarget 2018; 8:644-657. [PMID: 27893417 PMCID: PMC5352185 DOI: 10.18632/oncotarget.13501] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Accepted: 11/14/2016] [Indexed: 12/22/2022] Open
Abstract
Although previous studies suggested that microRNA-506-3p (miR-506-3p) was frequently downregulated, and functioned as a tumor suppressor in several cancers, the biological role and intrinsic regulatory mechanisms of miR-506-3p in non-small cell lung cancer (NSCLC) remain elusive. The present study found miR-506-3p expression was downregulated in advanced NSCLC tissues and cell lines. The expression of miR-506-3p in NSCLC was inversely correlated with larger tumor size, advanced TNM stage and lymph node metastasis. In addition, we also found patients with lower expression of miR-506-3p had a poor prognosis than those patients with higher expression of miR-506-3p. Function studies demonstrated that aberrant miR-506-3p expression modulates tumor cell growth, cell mobility, cell migration and invasion in vitro and in vivo. Mechanistic investigations manifested that coactosin-like protein 1 (COTL1) was a direct downstream target of miR-506-3p. Knockdown of COTL1 mimicked the tumor-suppressive effects of miR-506-3p overexpression in A549 cells, whereas COTL1 overexpression enhanced the tumorigenic function in HCC827 cells. Importantly, we also found GATA3 transcriptionally actives miR-506-3p expression, and the long non-coding RNA urothelial carcinoma-associated 1 (UCA1) exerts oncogenic function in NSCLC by competitively ‘sponging’ miRNA-506. Together, our combined results elucidated genetic and epigenetic silencing of miR-506-3p enhances COTL1 oncogene expression to foster NSCLC progression.
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Affiliation(s)
- Shanqi Guo
- Department of Oncology, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Peiying Yang
- Department of Oncology, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Xingkang Jiang
- Department of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China
| | - Xiaojiang Li
- Department of Oncology, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Yuanyuan Wang
- Department of Oncology, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Xin Zhang
- Department of Oncology, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Binxu Sun
- Department of Oncology, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Yao Zhang
- Department of Oncology, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Yingjie Jia
- Department of Oncology, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
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18
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Sar D, Kim B, Ostadhossein F, Misra SK, Pan D. Revisiting Polyarenes and Related Molecules: An Update of Synthetic Approaches and Structure-Activity-Mechanistic Correlation for Carcinogenesis. CHEM REC 2018; 18:619-658. [DOI: 10.1002/tcr.201700110] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Accepted: 02/05/2018] [Indexed: 01/07/2023]
Affiliation(s)
- Dinabandhu Sar
- Department of Bioengineering; University of Illinois at Urbana-Champaign; Biomedical Research Center, Office 3304; 3rd Floor, Mills Breast Cancer Institute, Carle Foundation Hospital; 502 N. Busey Urbana IL 61801 USA
- Mills Breast Cancer Institute and Carle Foundation Hospital; 502 North Busey Urbana, Illinois 61801 USA
| | | | - Fatemeh Ostadhossein
- Department of Bioengineering; University of Illinois at Urbana-Champaign; Biomedical Research Center, Office 3304; 3rd Floor, Mills Breast Cancer Institute, Carle Foundation Hospital; 502 N. Busey Urbana IL 61801 USA
- Mills Breast Cancer Institute and Carle Foundation Hospital; 502 North Busey Urbana, Illinois 61801 USA
| | - Santosh K. Misra
- Department of Bioengineering; University of Illinois at Urbana-Champaign; Biomedical Research Center, Office 3304; 3rd Floor, Mills Breast Cancer Institute, Carle Foundation Hospital; 502 N. Busey Urbana IL 61801 USA
- Mills Breast Cancer Institute and Carle Foundation Hospital; 502 North Busey Urbana, Illinois 61801 USA
| | - Dipanjan Pan
- Department of Bioengineering; University of Illinois at Urbana-Champaign; Biomedical Research Center, Office 3304; 3rd Floor, Mills Breast Cancer Institute, Carle Foundation Hospital; 502 N. Busey Urbana IL 61801 USA
- Mills Breast Cancer Institute and Carle Foundation Hospital; 502 North Busey Urbana, Illinois 61801 USA
- Department of Materials Science and Engineering; University of Illinois at Urbana-Champaign, Urbana, Illinois; 61801 USA
- Beckman Institute; University of Illinois at Urbana-Champaign; Urbana, Illinois 61801 USA
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19
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Pogribny IP, Beland FA, Rusyn I. The role of microRNAs in the development and progression of chemical-associated cancers. Toxicol Appl Pharmacol 2016; 312:3-10. [DOI: 10.1016/j.taap.2015.11.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Revised: 11/16/2015] [Accepted: 11/23/2015] [Indexed: 01/07/2023]
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20
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Zhang Y, Lin C, Liao G, Liu S, Ding J, Tang F, Wang Z, Liang X, Li B, Wei Y, Huang Q, Li X, Tang B. MicroRNA-506 suppresses tumor proliferation and metastasis in colon cancer by directly targeting the oncogene EZH2. Oncotarget 2016; 6:32586-601. [PMID: 26452129 PMCID: PMC4741714 DOI: 10.18632/oncotarget.5309] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2015] [Accepted: 09/21/2015] [Indexed: 01/19/2023] Open
Abstract
Increasing evidence reveals that aberrant expression of microRNA contributes to the development and progression of colon cancer, but the roles of microRNA-506 (miR-506) in colon cancer remain elusive. Here, we demonstrated that miR-506 was down-regulated in colon cancer tissue and cells and that miR-506 expression was inversely correlated with EZH2 expression, tumor size, lymph node invasion, TNM stage and metastasis. A high level of miR-506 identified patients with a favorable prognosis. In vitro and in vivo experiments confirmed that miR-506 inhibits the proliferation and metastasis of colon cancer, and a luciferase reporter assay confirmed that EZH2 is a direct and functional target of miR-506 via the 3′UTR of EZH2. The restoration of EZH2 expression partially reversed the proliferation and invasion of miR-506-overexpressing colon cancer cells. Moreover, we confirmed that the miR-506-EZH2 axis inhibits proliferation and metastasis by activating/suppressing specific downstream tumor-associated genes and the Wnt/β-catenin signaling pathway. Taking together, our study sheds light on the role of miR-506 as a suppressor for tumor growth and metastasis and raises the intriguing possibility that miR-506 may serve as a new potential marker for monitoring and treating colon cancer.
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Affiliation(s)
- Yi Zhang
- Department of Gastrointestinal Surgery, Xiangya Hospital, Central South University, 410008, PR China.,Department of Oncological Surgery, Affiliated Hospital of Xuzhou Medical College, 221000, PR China
| | - Changwei Lin
- Department of Gastrointestinal Surgery, Third Xiangya Hospital, Central South University, 410008, PR China
| | - Guoqing Liao
- Department of Gastrointestinal Surgery, Xiangya Hospital, Central South University, 410008, PR China
| | - Sheng Liu
- Department of Gastrointestinal Surgery, Xiangya Hospital, Central South University, 410008, PR China
| | - Jie Ding
- Department of Gastrointestinal Surgery, Guizhou Provincial People's Hospital, 550000, PR China
| | - Fang Tang
- Department of Hepatobiliary Surgery, Affiliated Hospital of Guilin Medical University, 541000, PR China
| | - Zhenran Wang
- Department of Hepatobiliary Surgery, Affiliated Hospital of Guilin Medical University, 541000, PR China
| | - Xingsi Liang
- Department of Hepatobiliary Surgery, Affiliated Hospital of Guilin Medical University, 541000, PR China
| | - Bo Li
- Department of Hepatobiliary Surgery, Affiliated Hospital of Guilin Medical University, 541000, PR China
| | - Yangchao Wei
- Department of Hepatobiliary Surgery, Affiliated Hospital of Guilin Medical University, 541000, PR China
| | - Qi Huang
- Department of Hepatobiliary Surgery, Affiliated Hospital of Guilin Medical University, 541000, PR China
| | - Xuan Li
- Department of Hepatobiliary Surgery, Affiliated Hospital of Guilin Medical University, 541000, PR China
| | - Bo Tang
- Department of Hepatobiliary Surgery, Affiliated Hospital of Guilin Medical University, 541000, PR China
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21
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Triozzi PL, Achberger S, Aldrich W, Crabb JW, Saunthararajah Y, Singh AD. Association of tumor and plasma microRNA expression with tumor monosomy-3 in patients with uveal melanoma. Clin Epigenetics 2016; 8:80. [PMID: 27453764 PMCID: PMC4957327 DOI: 10.1186/s13148-016-0243-0] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Accepted: 07/04/2016] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND Epigenetic events mediated by methylation and histone modifications have been associated with the development of metastasis in patients with uveal melanoma. The role of epigenetic events mediated by microRNA (miR) is less clear. Tumor and plasma miR expression was examined in patients with primary uveal melanoma with tumor monosomy-3, a predictor of metastasis. RESULTS miR profiling of tumors by microarray found six miRs over-expressed and 19 under-expressed in 33 tumors with monosomy-3 compared to 22 without. None of the miRs differentially expressed in tumors with and without monosomy-3 was differentially expressed in tumors with and without tumor infiltrating lymphocytes. Tumors manifesting monosomy-3 were also characterized by higher levels of TARBP2 and DDX17 and by lower levels of XPO5 and HIWI, miR biogenesis factors. miR profiling of plasma by a quantitative nuclease protection assay found elevated levels of 11 miRs and reduction in four in patients with tumor monosomy-3. Only three miRs differentially expressed in the tumor arrays were detectable in plasma. miRs implicated in uveal melanoma development were not differentially expressed. Elevated plasma levels in patients with tumor monosomy-3 of miR-92b, identified in the tumor array, and of miR-199-5p and miR-223, identified in the plasma array, were confirmed by quantitative real-time polymerase chain reaction. Levels were also higher in patients compared to normal controls. CONCLUSIONS These results support a role for epigenetic mechanisms in the development of metastasis in patients with uveal melanoma and the analysis of miRs as biomarkers of metastatic risk. They also suggest that potentially useful blood miRs may be derived from the host response as well as the tumor.
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Affiliation(s)
- Pierre L Triozzi
- Taussig Cancer Institute, Cleveland Clinic Foundation, Cleveland, OH USA ; Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC 27157 USA
| | - Susan Achberger
- Taussig Cancer Institute, Cleveland Clinic Foundation, Cleveland, OH USA
| | - Wayne Aldrich
- Taussig Cancer Institute, Cleveland Clinic Foundation, Cleveland, OH USA
| | - John W Crabb
- Cole Eye Institute, Cleveland Clinic Foundation, Cleveland, OH USA
| | | | - Arun D Singh
- Cole Eye Institute, Cleveland Clinic Foundation, Cleveland, OH USA
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22
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Yao J, Qin L, Miao S, Wang X, Wu X. Overexpression of miR-506 suppresses proliferation and promotes apoptosis of osteosarcoma cells by targeting astrocyte elevated gene-1. Oncol Lett 2016; 12:1840-1848. [PMID: 27602115 PMCID: PMC4998420 DOI: 10.3892/ol.2016.4827] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Accepted: 06/10/2016] [Indexed: 11/22/2022] Open
Abstract
There is increasing evidence that microRNAs (miRs) are implicated in tumor development and progression; however, their specific roles in osteosarcoma are not well understood. The aim of the present study was to investigate the role of miR-506 in the pathogenesis of osteosarcoma. The expression levels of miR-506 and astrocyte elevated gene-1 (AEG-1) mRNA were detected using quantitative polymerase chain reaction, and the protein levels of AEG-1, β-catenin, c-myc and cyclin D1 were determined using western blot analysis. The effects of miR-506 and AEG-1 on cell viability, colony forming ability and apoptosis were assessed using MTT assay, colony formation assay, and flow cytometry, respectively. Lucifer reporter assays were used to demonstrate whether AEG-1 is a direct target of miR-506. The present study identified that miR-506 was downregulated in osteosarcoma tissues and cells. Overexpression of miR-506 suppressed the proliferation and induced apoptosis in osteosarcoma cells in vitro and inhibited tumor formation in vivo. Overexpression of miR-506 significantly inhibited the luciferase activity of AEG-1 with a wild-type 3′-untranslated region, providing clear evidence that AEG-1 was a direct and functional downstream target of miR-506. Similar to the overexpression of miR-506, downregulation of AEG-1 lead to an inhibitory effect on osteosarcoma in vitro. Furthermore, overexpression of miR-506 or downregulation of AEG-1 inhibited the Wnt/β-catenin signaling pathway, and inhibition of this pathway by β-catenin small interfering RNA or CGP049090, a small molecule inhibitor, suppressed cell proliferation and induced apoptosis in vitro. Overall, the present data indicated that miR-506 functions as a tumor suppressor by targeting AEG-1 in osteosarcoma via the regulation of the Wnt/β-catenin signaling pathway.
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Affiliation(s)
- Jie Yao
- Orthopedics Department, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China; Spine Department 3, Zhengzhou Orthopedics Hospital, Zhengzhou, Henan 450052, P.R. China
| | - Li Qin
- Orthopedics Department 3,The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Sen Miao
- Spine Department 3, Zhengzhou Orthopedics Hospital, Zhengzhou, Henan 450052, P.R. China
| | - Xiangshan Wang
- Spine Department 3, Zhengzhou Orthopedics Hospital, Zhengzhou, Henan 450052, P.R. China
| | - Xuejian Wu
- Orthopedics Department 3,The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
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23
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Liu X, Luo F, Ling M, Lu L, Shi L, Lu X, Xu H, Chen C, Yang Q, Xue J, Li J, Zhang A, Liu Q. MicroRNA-21 activation of ERK signaling via PTEN is involved in arsenite-induced autophagy in human hepatic L-02 cells. Toxicol Lett 2016; 252:1-10. [PMID: 27107786 DOI: 10.1016/j.toxlet.2016.04.015] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Revised: 04/15/2016] [Accepted: 04/19/2016] [Indexed: 12/11/2022]
Abstract
Autophagy, an evolutionarily conserved cellular process, has diverse physiological and pathological roles in biological functions. Whether autophagy is induced by arsenite, a well-established human carcinogen, and the molecular mechanisms involved, remain to be established. Further, microRNAs (miRNAs) act as regulators in various cancers, but how miRNAs regulate autophagy remains largely unexplored. We have found that, in human hepatic epithelial (L-02) cells, arsenite increases levels of autophagy-related proteins in a concentration- and time-dependent manner and elevates the number of autophagic vacuoles (AVs). Arsenite also activates the ERK pathway in a dose- and time-dependent manner. In L-02 cells exposed to arsenite, microRNA-21 (miRNA-21) is over-expressed, and its target proteins, PTEN, PDCD4, and Spry1, are decreased. Moreover, inhibition of miR-21 increases levels of PTEN, and reduces levels of Beclin 1 and LC3 II/I, indicating that miR-21 is involved in arsenite-induced autophagy. In addition, ectopic expression of PTEN blocks the effect of miR-21 on the arsenite-induced autophagy and decreases p-ERK levels. Also, ERK promotes the autophagy induced by arsenite. In sum, upon exposure of cells to arsenite, over-expression of miR-21 activates ERK through PTEN, factors that participate in arsenite-induced autophagy. This link, mediated through miRNAs, establishes a mechanism for the development of autophagy that is associated with arsenic toxicity. Such information contributes to an understanding of the liver toxicity caused by arsenite.
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Affiliation(s)
- Xinlu Liu
- Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, Jiangsu, PR China; The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, Jiangsu, PR China
| | - Fei Luo
- Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, Jiangsu, PR China; The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, Jiangsu, PR China
| | - Min Ling
- Jiangsu Center for Disease Control and Prevention, Nanjing 210009, Jiangsu, PR China
| | - Lu Lu
- Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, Jiangsu, PR China; The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, Jiangsu, PR China
| | - Le Shi
- Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, Jiangsu, PR China; The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, Jiangsu, PR China
| | - Xiaolin Lu
- Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, Jiangsu, PR China; The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, Jiangsu, PR China
| | - Hui Xu
- Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, Jiangsu, PR China; The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, Jiangsu, PR China
| | - Chao Chen
- Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, Jiangsu, PR China; The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, Jiangsu, PR China
| | - Qianlei Yang
- Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, Jiangsu, PR China; The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, Jiangsu, PR China
| | - Junchao Xue
- Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, Jiangsu, PR China; The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, Jiangsu, PR China
| | - Jun Li
- The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, School of Public Health, Guiyang Medical University, Guiyang 550025, Guizhou, PR China
| | - Aihua Zhang
- The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, School of Public Health, Guiyang Medical University, Guiyang 550025, Guizhou, PR China
| | - Qizhan Liu
- Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, Jiangsu, PR China; The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, Jiangsu, PR China.
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24
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Chappell G, Pogribny IP, Guyton KZ, Rusyn I. Epigenetic alterations induced by genotoxic occupational and environmental human chemical carcinogens: A systematic literature review. MUTATION RESEARCH. REVIEWS IN MUTATION RESEARCH 2016; 768:27-45. [PMID: 27234561 PMCID: PMC4884606 DOI: 10.1016/j.mrrev.2016.03.004] [Citation(s) in RCA: 109] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Revised: 03/24/2016] [Accepted: 03/25/2016] [Indexed: 01/30/2023]
Abstract
Accumulating evidence suggests that epigenetic alterations play an important role in chemically-induced carcinogenesis. Although the epigenome and genome may be equally important in carcinogenicity, the genotoxicity of chemical agents and exposure-related transcriptomic responses have been more thoroughly studied and characterized. To better understand the evidence for epigenetic alterations of human carcinogens, and the potential association with genotoxic endpoints, we conducted a systematic review of published studies of genotoxic carcinogens that reported epigenetic endpoints. Specifically, we searched for publications reporting epigenetic effects for the 28 agents and occupations included in Monograph Volume 100F of the International Agency for the Research on Cancer (IARC) that were classified as "carcinogenic to humans" (Group 1) with strong evidence of genotoxic mechanisms of carcinogenesis. We identified a total of 158 studies that evaluated epigenetic alterations for 12 of these 28 carcinogenic agents and occupations (1,3-butadiene, 4-aminobiphenyl, aflatoxins, benzene, benzidine, benzo[a]pyrene, coke production, formaldehyde, occupational exposure as a painter, sulfur mustard, and vinyl chloride). Aberrant DNA methylation was most commonly studied, followed by altered expression of non-coding RNAs and histone changes (totaling 85, 59 and 25 studies, respectively). For 3 carcinogens (aflatoxins, benzene and benzo[a]pyrene), 10 or more studies reported epigenetic effects. However, epigenetic studies were sparse for the remaining 9 carcinogens; for 4 agents, only 1 or 2 published reports were identified. While further research is needed to better identify carcinogenesis-associated epigenetic perturbations for many potential carcinogens, published reports on specific epigenetic endpoints can be systematically identified and increasingly incorporated in cancer hazard assessments.
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Affiliation(s)
- Grace Chappell
- Department of Veterinary Integrative Biosciences, Texas A&M University, College Station, TX, USA
| | - Igor P Pogribny
- National Center for Toxicological Research, US Food and Drug Administration, Jefferson, AR, USA
| | | | - Ivan Rusyn
- Department of Veterinary Integrative Biosciences, Texas A&M University, College Station, TX, USA.
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25
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Qin Y, Cheng C, Lu H, Wang Y. miR-4458 suppresses glycolysis and lactate production by directly targeting hexokinase2 in colon cancer cells. Biochem Biophys Res Commun 2015; 469:37-43. [PMID: 26607110 DOI: 10.1016/j.bbrc.2015.11.066] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2015] [Accepted: 11/16/2015] [Indexed: 12/23/2022]
Abstract
miR-4458, a new tumor-suppressor, was reported to down-regulated in human hepatocellular carcinoma. The expression status, roles and inhibitory mechanisms of miR-4458 in other tumors still need to be clarified. The aim of this study is to investigate the effects of miR-4458 and to elucidate the potential mechanism in colon cancer cells. Using bioinformatic databases, we predicted that hexokinase2 (HK2), a rate-limiting enzyme in the glycolytic pathway, was a target of miR-4458, so the effects of miR-4458 on glycolysis and lactate production was assessed in colon cancer cells. We found that miR-4458 was down-regulated and HK2 was up-regulated in colon cancer cells. Overexpression of miR-4458 inhibited proliferation, glycolysis, and lactate production under both normoxic and hypoxic conditions. Luciferase activity assays showed that HK2 was a direct target of miR-4458. Moreover, knockdown of HK2 by specific RNAi also suppressed proliferation, glycolysis, and lactate production under both normoxic and hypoxic conditions. In conclusion, our findings suggested that miR-4458 inhibited the progression of colon cancer cells by inhibition of glycolysis and lactate production via directly targeting HK2 mRNA.
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Affiliation(s)
- Yaguang Qin
- Department of Oncology, Huaihe Hospital of Henan University, Kaifeng, Henan, 475000, PR China
| | - Chuanyao Cheng
- Department of Oncology, Huaihe Hospital of Henan University, Kaifeng, Henan, 475000, PR China
| | - Hong Lu
- Department of Oncology, Huaihe Hospital of Henan University, Kaifeng, Henan, 475000, PR China.
| | - Yaqiu Wang
- Department of Oncology, Huaihe Hospital of Henan University, Kaifeng, Henan, 475000, PR China
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26
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Peng T, Zhou L, Zuo L, Luan Y. MiR-506 functions as a tumor suppressor in glioma by targeting STAT3. Oncol Rep 2015; 35:1057-64. [PMID: 26554866 DOI: 10.3892/or.2015.4406] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Accepted: 09/23/2015] [Indexed: 11/05/2022] Open
Abstract
MicroRNA-506 (miR-506) has been reported to act as a tumor suppressive or an oncogenic miRNA in different types of tumors. However, the roles and underlying molecular mechanism of miR-506 in glioma remain unclear. In the present study, we performed quantitative PCR to investigate the level of miR-506 in 36 pairs of glioma tumor and matched adjacent tissues, and found that miR-506 was downregulated in the glioma tumors compared to the expression in the adjacent normal tissues. Furthermore, a functional assay found that ectopic expression of miR-506 in glioma cells markedly suppressed cell proliferation, colony formation, migration and invasion, and suppressed tumor growth in vivo. Moreover, signal transducer and activator of transcription 3 (STAT3) was identified as a direct target of miR-506. Western blot assay showed that overexpression of miR-506 not only induced changes in STAT3 expression but also altered expression of its downstream genes, including, Bcl2, cyclin D1 and matrix metalloproteinase 2 (MMP-2), in the human glioma cells. In addition, STAT3 mRNA expression was increased in the glioma tissues, and was inversely correlated with miR-506. Importantly, overexpression of STAT3 in glioma cells attenuated the suppressive effects of miR-506 on cell proliferation, colony formation, migration and invasion. These results showed that miR-506 functions as a tumor suppressor in glioma by targeting STAT3, suggesting that miR-506 may serve as a potential target in the treatment of human glioma.
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Affiliation(s)
- Tao Peng
- Department of Neurosurgery, First Bethune Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Lixiang Zhou
- Department of Neurosurgery, First Bethune Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Ling Zuo
- Department of Ophthalmology, Second Bethune Hospital of Jilin University, Changchun, Jilin 130041, P.R. China
| | - Yongxin Luan
- Department of Neurosurgery, First Bethune Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
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27
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Sun G, Liu Y, Wang K, Xu Z. miR-506 regulates breast cancer cell metastasis by targeting IQGAP1. Int J Oncol 2015; 47:1963-70. [PMID: 26398880 DOI: 10.3892/ijo.2015.3161] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2015] [Accepted: 07/29/2015] [Indexed: 11/06/2022] Open
Abstract
MicroRNA (miRNA or miR)-506 is a novel miRNA related to the survival of breast cancer patients. However, the mechanism underlying miRNA-506 involvement in breast carcinogenesis remains unclear. In the present study, we found that miR-506 was downregulated in human breast malignant tissues and breast cancer cell lines by RT-qPCR analysis, and the expression level of miR-506 was decreased with the increasing of tumor stage. Subsequently, gain-of-function and loss-of-function experiments were performed in vitro, and the results from MTT assay, Transwell-Matrigel invasion assay and cell adhesion assay revealed that miR-506 suppresses cell proliferation, invasion and adhesion of breast cancer cells. Luciferase reporter assay revealed that IQ motif containing GTPase activating protein 1 (IQGAP1) is a direct target of miR-506. miR-506 represses the expression of IQGAP1 and its downstream extracellular signal regulated kinase (ERK) mitogen-activated protein kinase (MAPK) signaling pathways, as demonstrated by the RT-qPCR and western blot analysis. Furthermore, we found that IQGAP1 rescues the effect of miR-506 on cell proliferation, invasion, adhesion, and the activation of ERK MAPK signaling. In conclusion, the present study is the first to provide evidence that miR-506 acts as a tumor suppressor, at least partially, by directly downregulating IQGAP1 in breast cancer cells. The miR-506/IQGAP1/ERK pathway may be a novel therapeutic target in breast cancer.
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Affiliation(s)
- Guang Sun
- Breast Surgical Department of China-Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
| | - Yanxi Liu
- Breast Surgical Department of China-Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
| | - Keren Wang
- Breast Surgical Department of China-Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
| | - Zheli Xu
- Breast Surgical Department of China-Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
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28
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Wang Y, Wang H, Gao H, Xu B, Zhai W, Li J, Zhang C. Elevated expression of TGIF is involved in lung carcinogenesis. Tumour Biol 2015; 36:9223-31. [PMID: 26091794 DOI: 10.1007/s13277-015-3615-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Accepted: 05/26/2015] [Indexed: 02/06/2023] Open
Abstract
The purpose of this study was to explore the expression of TG-interacting factor (TGIF) in lung carcinogenesis. Malignant transformation of human bronchial epithelial (16HBE) cell was established by benzo(a)pyrene (BaP) treatment. Soft agar assay and tumor formation assay in nude mice were applied. Tumorigenesis experiment in vivo was done by BaP treatment. Western blotting, immunohistochemistry, and quantitative polymerase chain reaction were used to detect TGIF expression. We observed a higher level of TGIF messenger RNA (mRNA) in lung cancer tissues than that in paracancerous tissues. We observed significantly higher levels of TGIF mRNA and protein in A549 and H1299 cell lines than that in 16HBE cell. Increased expressions of TGIF protein and mRNA were observed in 16HBE cells induced by BaP treatment as compared to those in solvent control group. We observed significantly higher levels of TGIF mRNA and protein in 16HBE-BaP cells than that in 16HBE-control cells. We observed significantly higher levels of TGIF mRNA and protein in mice lung tissues treated with BaP than that in control group. Our results suggested that elevated expression of TGIF was involved in lung carcinogenesis.
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Affiliation(s)
- Yadong Wang
- Department of Toxicology, Henan Center for Disease Control and Prevention, Zhengzhou, 450016, China.
| | - Haiyu Wang
- Department of Toxicology, Henan Center for Disease Control and Prevention, Zhengzhou, 450016, China
| | - Huiyan Gao
- Department of Toxicology, Henan Center for Disease Control and Prevention, Zhengzhou, 450016, China
| | - Bing Xu
- Department of Toxicology, Henan Center for Disease Control and Prevention, Zhengzhou, 450016, China
| | - Wenlong Zhai
- Department of General Surgery, First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Jiangmin Li
- Department of Toxicology, Henan Center for Disease Control and Prevention, Zhengzhou, 450016, China
| | - Congke Zhang
- Department of Toxicology, Henan Center for Disease Control and Prevention, Zhengzhou, 450016, China
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29
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Liu G, Yang D, Rupaimoole R, Pecot CV, Sun Y, Mangala LS, Li X, Ji P, Cogdell D, Hu L, Wang Y, Rodriguez-Aguayo C, Lopez-Berestein G, Shmulevich I, De Cecco L, Chen K, Mezzanzanica D, Xue F, Sood AK, Zhang W. Augmentation of response to chemotherapy by microRNA-506 through regulation of RAD51 in serous ovarian cancers. J Natl Cancer Inst 2015; 107:djv108. [PMID: 25995442 DOI: 10.1093/jnci/djv108] [Citation(s) in RCA: 92] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2014] [Accepted: 03/18/2015] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Chemoresistance is a major challenge in cancer treatment. miR-506 is a potent inhibitor of the epithelial-to-mesenchymal transition (EMT), which is also associated with chemoresistance. We characterized the role of miR-506 in chemotherapy response in high-grade serous ovarian cancers. METHODS We used Kaplan-Meier and log-rank methods to analyze the relationship between miR-506 and progression-free and overall survival in The Cancer Genome Atlas (TCGA) (n = 468) and Bagnoli (n = 130) datasets, in vitro experiments to study whether miR-506 is associated with homologous recombination, and response to chemotherapy agents. We used an orthotopic ovarian cancer mouse model (n = 10 per group) to test the effect of miR-506 on cisplatin and PARP inhibitor sensitivity. All statistical tests were two-sided. RESULTS MiR-506 was associated with better response to therapy and longer progression-free and overall survival in two independent epithelial ovarian cancer patient cohorts (PFS: high vs low miR-506 expression; Bagnoli: hazard ratio [HR] = 3.06, 95% confidence interval [CI] = 1.90 to 4.70, P < .0001; TCGA: HR = 1.49, 95% CI = 1.00 to 2.25, P = 0.04). MiR-506 sensitized cells to DNA damage through directly targeting the double-strand DNA damage repair gene RAD51. Systemic delivery of miR-506 in 8-12 week old female athymic nude mice statistically significantly augmented the cisplatin and olaparib response (mean tumor weight ± SD, control miRNA plus cisplatin vs miR-506 plus cisplatin: 0.36±0.05g vs 0.07±0.02g, P < .001; control miRNA plus olaparib vs miR-506 plus olaparib: 0.32±0.13g vs 0.05±0.02g, P = .045, respectively), thus recapitulating the clinical observation. CONCLUSIONS MiR-506 is a robust clinical marker for chemotherapy response and survival in serous ovarian cancers and has important therapeutic value in sensitizing cancer cells to chemotherapy.
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Affiliation(s)
- Guoyan Liu
- : Departments of Pathology (GL, DY, YS, XL, PJ, DC, LH, WZ), Experimental Therapeutics (CRA, GLB), and Gynecologic Oncology and Reproductive Medicine (RR, LSM, AKS), Division of Cancer Medicine (CVP), Center for RNAi and Non-Coding RNA (RR, CVP, LSM, CRA, GLB, AKS, WZ), the University of Texas MD Anderson Cancer Center, Houston, TX; Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin, China (GL, YW, FX); Department of Pathology (YS) and Epidemiology (KC), Tianjin Medical University Cancer Institute and Hospital, Tianjin, China; Department of Biochemistry and Molecular Biology, State Key Laboratory of Cancer Biology, the Fourth Military Medical University, Xi'an, China (XL); Institute for Systems Biology, Seattle, WA (IS); Department of Experimental Oncology and Molecular Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy (LDC, DM)
| | - Da Yang
- : Departments of Pathology (GL, DY, YS, XL, PJ, DC, LH, WZ), Experimental Therapeutics (CRA, GLB), and Gynecologic Oncology and Reproductive Medicine (RR, LSM, AKS), Division of Cancer Medicine (CVP), Center for RNAi and Non-Coding RNA (RR, CVP, LSM, CRA, GLB, AKS, WZ), the University of Texas MD Anderson Cancer Center, Houston, TX; Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin, China (GL, YW, FX); Department of Pathology (YS) and Epidemiology (KC), Tianjin Medical University Cancer Institute and Hospital, Tianjin, China; Department of Biochemistry and Molecular Biology, State Key Laboratory of Cancer Biology, the Fourth Military Medical University, Xi'an, China (XL); Institute for Systems Biology, Seattle, WA (IS); Department of Experimental Oncology and Molecular Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy (LDC, DM)
| | - Rajesha Rupaimoole
- : Departments of Pathology (GL, DY, YS, XL, PJ, DC, LH, WZ), Experimental Therapeutics (CRA, GLB), and Gynecologic Oncology and Reproductive Medicine (RR, LSM, AKS), Division of Cancer Medicine (CVP), Center for RNAi and Non-Coding RNA (RR, CVP, LSM, CRA, GLB, AKS, WZ), the University of Texas MD Anderson Cancer Center, Houston, TX; Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin, China (GL, YW, FX); Department of Pathology (YS) and Epidemiology (KC), Tianjin Medical University Cancer Institute and Hospital, Tianjin, China; Department of Biochemistry and Molecular Biology, State Key Laboratory of Cancer Biology, the Fourth Military Medical University, Xi'an, China (XL); Institute for Systems Biology, Seattle, WA (IS); Department of Experimental Oncology and Molecular Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy (LDC, DM)
| | - Chad V Pecot
- : Departments of Pathology (GL, DY, YS, XL, PJ, DC, LH, WZ), Experimental Therapeutics (CRA, GLB), and Gynecologic Oncology and Reproductive Medicine (RR, LSM, AKS), Division of Cancer Medicine (CVP), Center for RNAi and Non-Coding RNA (RR, CVP, LSM, CRA, GLB, AKS, WZ), the University of Texas MD Anderson Cancer Center, Houston, TX; Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin, China (GL, YW, FX); Department of Pathology (YS) and Epidemiology (KC), Tianjin Medical University Cancer Institute and Hospital, Tianjin, China; Department of Biochemistry and Molecular Biology, State Key Laboratory of Cancer Biology, the Fourth Military Medical University, Xi'an, China (XL); Institute for Systems Biology, Seattle, WA (IS); Department of Experimental Oncology and Molecular Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy (LDC, DM)
| | - Yan Sun
- : Departments of Pathology (GL, DY, YS, XL, PJ, DC, LH, WZ), Experimental Therapeutics (CRA, GLB), and Gynecologic Oncology and Reproductive Medicine (RR, LSM, AKS), Division of Cancer Medicine (CVP), Center for RNAi and Non-Coding RNA (RR, CVP, LSM, CRA, GLB, AKS, WZ), the University of Texas MD Anderson Cancer Center, Houston, TX; Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin, China (GL, YW, FX); Department of Pathology (YS) and Epidemiology (KC), Tianjin Medical University Cancer Institute and Hospital, Tianjin, China; Department of Biochemistry and Molecular Biology, State Key Laboratory of Cancer Biology, the Fourth Military Medical University, Xi'an, China (XL); Institute for Systems Biology, Seattle, WA (IS); Department of Experimental Oncology and Molecular Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy (LDC, DM)
| | - Lingegowda S Mangala
- : Departments of Pathology (GL, DY, YS, XL, PJ, DC, LH, WZ), Experimental Therapeutics (CRA, GLB), and Gynecologic Oncology and Reproductive Medicine (RR, LSM, AKS), Division of Cancer Medicine (CVP), Center for RNAi and Non-Coding RNA (RR, CVP, LSM, CRA, GLB, AKS, WZ), the University of Texas MD Anderson Cancer Center, Houston, TX; Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin, China (GL, YW, FX); Department of Pathology (YS) and Epidemiology (KC), Tianjin Medical University Cancer Institute and Hospital, Tianjin, China; Department of Biochemistry and Molecular Biology, State Key Laboratory of Cancer Biology, the Fourth Military Medical University, Xi'an, China (XL); Institute for Systems Biology, Seattle, WA (IS); Department of Experimental Oncology and Molecular Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy (LDC, DM)
| | - Xia Li
- : Departments of Pathology (GL, DY, YS, XL, PJ, DC, LH, WZ), Experimental Therapeutics (CRA, GLB), and Gynecologic Oncology and Reproductive Medicine (RR, LSM, AKS), Division of Cancer Medicine (CVP), Center for RNAi and Non-Coding RNA (RR, CVP, LSM, CRA, GLB, AKS, WZ), the University of Texas MD Anderson Cancer Center, Houston, TX; Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin, China (GL, YW, FX); Department of Pathology (YS) and Epidemiology (KC), Tianjin Medical University Cancer Institute and Hospital, Tianjin, China; Department of Biochemistry and Molecular Biology, State Key Laboratory of Cancer Biology, the Fourth Military Medical University, Xi'an, China (XL); Institute for Systems Biology, Seattle, WA (IS); Department of Experimental Oncology and Molecular Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy (LDC, DM)
| | - Ping Ji
- : Departments of Pathology (GL, DY, YS, XL, PJ, DC, LH, WZ), Experimental Therapeutics (CRA, GLB), and Gynecologic Oncology and Reproductive Medicine (RR, LSM, AKS), Division of Cancer Medicine (CVP), Center for RNAi and Non-Coding RNA (RR, CVP, LSM, CRA, GLB, AKS, WZ), the University of Texas MD Anderson Cancer Center, Houston, TX; Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin, China (GL, YW, FX); Department of Pathology (YS) and Epidemiology (KC), Tianjin Medical University Cancer Institute and Hospital, Tianjin, China; Department of Biochemistry and Molecular Biology, State Key Laboratory of Cancer Biology, the Fourth Military Medical University, Xi'an, China (XL); Institute for Systems Biology, Seattle, WA (IS); Department of Experimental Oncology and Molecular Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy (LDC, DM)
| | - David Cogdell
- : Departments of Pathology (GL, DY, YS, XL, PJ, DC, LH, WZ), Experimental Therapeutics (CRA, GLB), and Gynecologic Oncology and Reproductive Medicine (RR, LSM, AKS), Division of Cancer Medicine (CVP), Center for RNAi and Non-Coding RNA (RR, CVP, LSM, CRA, GLB, AKS, WZ), the University of Texas MD Anderson Cancer Center, Houston, TX; Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin, China (GL, YW, FX); Department of Pathology (YS) and Epidemiology (KC), Tianjin Medical University Cancer Institute and Hospital, Tianjin, China; Department of Biochemistry and Molecular Biology, State Key Laboratory of Cancer Biology, the Fourth Military Medical University, Xi'an, China (XL); Institute for Systems Biology, Seattle, WA (IS); Department of Experimental Oncology and Molecular Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy (LDC, DM)
| | - Limei Hu
- : Departments of Pathology (GL, DY, YS, XL, PJ, DC, LH, WZ), Experimental Therapeutics (CRA, GLB), and Gynecologic Oncology and Reproductive Medicine (RR, LSM, AKS), Division of Cancer Medicine (CVP), Center for RNAi and Non-Coding RNA (RR, CVP, LSM, CRA, GLB, AKS, WZ), the University of Texas MD Anderson Cancer Center, Houston, TX; Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin, China (GL, YW, FX); Department of Pathology (YS) and Epidemiology (KC), Tianjin Medical University Cancer Institute and Hospital, Tianjin, China; Department of Biochemistry and Molecular Biology, State Key Laboratory of Cancer Biology, the Fourth Military Medical University, Xi'an, China (XL); Institute for Systems Biology, Seattle, WA (IS); Department of Experimental Oncology and Molecular Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy (LDC, DM)
| | - Yingmei Wang
- : Departments of Pathology (GL, DY, YS, XL, PJ, DC, LH, WZ), Experimental Therapeutics (CRA, GLB), and Gynecologic Oncology and Reproductive Medicine (RR, LSM, AKS), Division of Cancer Medicine (CVP), Center for RNAi and Non-Coding RNA (RR, CVP, LSM, CRA, GLB, AKS, WZ), the University of Texas MD Anderson Cancer Center, Houston, TX; Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin, China (GL, YW, FX); Department of Pathology (YS) and Epidemiology (KC), Tianjin Medical University Cancer Institute and Hospital, Tianjin, China; Department of Biochemistry and Molecular Biology, State Key Laboratory of Cancer Biology, the Fourth Military Medical University, Xi'an, China (XL); Institute for Systems Biology, Seattle, WA (IS); Department of Experimental Oncology and Molecular Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy (LDC, DM)
| | - Cristian Rodriguez-Aguayo
- : Departments of Pathology (GL, DY, YS, XL, PJ, DC, LH, WZ), Experimental Therapeutics (CRA, GLB), and Gynecologic Oncology and Reproductive Medicine (RR, LSM, AKS), Division of Cancer Medicine (CVP), Center for RNAi and Non-Coding RNA (RR, CVP, LSM, CRA, GLB, AKS, WZ), the University of Texas MD Anderson Cancer Center, Houston, TX; Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin, China (GL, YW, FX); Department of Pathology (YS) and Epidemiology (KC), Tianjin Medical University Cancer Institute and Hospital, Tianjin, China; Department of Biochemistry and Molecular Biology, State Key Laboratory of Cancer Biology, the Fourth Military Medical University, Xi'an, China (XL); Institute for Systems Biology, Seattle, WA (IS); Department of Experimental Oncology and Molecular Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy (LDC, DM)
| | - Gabriel Lopez-Berestein
- : Departments of Pathology (GL, DY, YS, XL, PJ, DC, LH, WZ), Experimental Therapeutics (CRA, GLB), and Gynecologic Oncology and Reproductive Medicine (RR, LSM, AKS), Division of Cancer Medicine (CVP), Center for RNAi and Non-Coding RNA (RR, CVP, LSM, CRA, GLB, AKS, WZ), the University of Texas MD Anderson Cancer Center, Houston, TX; Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin, China (GL, YW, FX); Department of Pathology (YS) and Epidemiology (KC), Tianjin Medical University Cancer Institute and Hospital, Tianjin, China; Department of Biochemistry and Molecular Biology, State Key Laboratory of Cancer Biology, the Fourth Military Medical University, Xi'an, China (XL); Institute for Systems Biology, Seattle, WA (IS); Department of Experimental Oncology and Molecular Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy (LDC, DM)
| | - Ilya Shmulevich
- : Departments of Pathology (GL, DY, YS, XL, PJ, DC, LH, WZ), Experimental Therapeutics (CRA, GLB), and Gynecologic Oncology and Reproductive Medicine (RR, LSM, AKS), Division of Cancer Medicine (CVP), Center for RNAi and Non-Coding RNA (RR, CVP, LSM, CRA, GLB, AKS, WZ), the University of Texas MD Anderson Cancer Center, Houston, TX; Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin, China (GL, YW, FX); Department of Pathology (YS) and Epidemiology (KC), Tianjin Medical University Cancer Institute and Hospital, Tianjin, China; Department of Biochemistry and Molecular Biology, State Key Laboratory of Cancer Biology, the Fourth Military Medical University, Xi'an, China (XL); Institute for Systems Biology, Seattle, WA (IS); Department of Experimental Oncology and Molecular Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy (LDC, DM)
| | - Loris De Cecco
- : Departments of Pathology (GL, DY, YS, XL, PJ, DC, LH, WZ), Experimental Therapeutics (CRA, GLB), and Gynecologic Oncology and Reproductive Medicine (RR, LSM, AKS), Division of Cancer Medicine (CVP), Center for RNAi and Non-Coding RNA (RR, CVP, LSM, CRA, GLB, AKS, WZ), the University of Texas MD Anderson Cancer Center, Houston, TX; Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin, China (GL, YW, FX); Department of Pathology (YS) and Epidemiology (KC), Tianjin Medical University Cancer Institute and Hospital, Tianjin, China; Department of Biochemistry and Molecular Biology, State Key Laboratory of Cancer Biology, the Fourth Military Medical University, Xi'an, China (XL); Institute for Systems Biology, Seattle, WA (IS); Department of Experimental Oncology and Molecular Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy (LDC, DM)
| | - Kexin Chen
- : Departments of Pathology (GL, DY, YS, XL, PJ, DC, LH, WZ), Experimental Therapeutics (CRA, GLB), and Gynecologic Oncology and Reproductive Medicine (RR, LSM, AKS), Division of Cancer Medicine (CVP), Center for RNAi and Non-Coding RNA (RR, CVP, LSM, CRA, GLB, AKS, WZ), the University of Texas MD Anderson Cancer Center, Houston, TX; Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin, China (GL, YW, FX); Department of Pathology (YS) and Epidemiology (KC), Tianjin Medical University Cancer Institute and Hospital, Tianjin, China; Department of Biochemistry and Molecular Biology, State Key Laboratory of Cancer Biology, the Fourth Military Medical University, Xi'an, China (XL); Institute for Systems Biology, Seattle, WA (IS); Department of Experimental Oncology and Molecular Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy (LDC, DM)
| | - Delia Mezzanzanica
- : Departments of Pathology (GL, DY, YS, XL, PJ, DC, LH, WZ), Experimental Therapeutics (CRA, GLB), and Gynecologic Oncology and Reproductive Medicine (RR, LSM, AKS), Division of Cancer Medicine (CVP), Center for RNAi and Non-Coding RNA (RR, CVP, LSM, CRA, GLB, AKS, WZ), the University of Texas MD Anderson Cancer Center, Houston, TX; Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin, China (GL, YW, FX); Department of Pathology (YS) and Epidemiology (KC), Tianjin Medical University Cancer Institute and Hospital, Tianjin, China; Department of Biochemistry and Molecular Biology, State Key Laboratory of Cancer Biology, the Fourth Military Medical University, Xi'an, China (XL); Institute for Systems Biology, Seattle, WA (IS); Department of Experimental Oncology and Molecular Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy (LDC, DM)
| | - Fengxia Xue
- : Departments of Pathology (GL, DY, YS, XL, PJ, DC, LH, WZ), Experimental Therapeutics (CRA, GLB), and Gynecologic Oncology and Reproductive Medicine (RR, LSM, AKS), Division of Cancer Medicine (CVP), Center for RNAi and Non-Coding RNA (RR, CVP, LSM, CRA, GLB, AKS, WZ), the University of Texas MD Anderson Cancer Center, Houston, TX; Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin, China (GL, YW, FX); Department of Pathology (YS) and Epidemiology (KC), Tianjin Medical University Cancer Institute and Hospital, Tianjin, China; Department of Biochemistry and Molecular Biology, State Key Laboratory of Cancer Biology, the Fourth Military Medical University, Xi'an, China (XL); Institute for Systems Biology, Seattle, WA (IS); Department of Experimental Oncology and Molecular Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy (LDC, DM)
| | - Anil K Sood
- : Departments of Pathology (GL, DY, YS, XL, PJ, DC, LH, WZ), Experimental Therapeutics (CRA, GLB), and Gynecologic Oncology and Reproductive Medicine (RR, LSM, AKS), Division of Cancer Medicine (CVP), Center for RNAi and Non-Coding RNA (RR, CVP, LSM, CRA, GLB, AKS, WZ), the University of Texas MD Anderson Cancer Center, Houston, TX; Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin, China (GL, YW, FX); Department of Pathology (YS) and Epidemiology (KC), Tianjin Medical University Cancer Institute and Hospital, Tianjin, China; Department of Biochemistry and Molecular Biology, State Key Laboratory of Cancer Biology, the Fourth Military Medical University, Xi'an, China (XL); Institute for Systems Biology, Seattle, WA (IS); Department of Experimental Oncology and Molecular Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy (LDC, DM)
| | - Wei Zhang
- : Departments of Pathology (GL, DY, YS, XL, PJ, DC, LH, WZ), Experimental Therapeutics (CRA, GLB), and Gynecologic Oncology and Reproductive Medicine (RR, LSM, AKS), Division of Cancer Medicine (CVP), Center for RNAi and Non-Coding RNA (RR, CVP, LSM, CRA, GLB, AKS, WZ), the University of Texas MD Anderson Cancer Center, Houston, TX; Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin, China (GL, YW, FX); Department of Pathology (YS) and Epidemiology (KC), Tianjin Medical University Cancer Institute and Hospital, Tianjin, China; Department of Biochemistry and Molecular Biology, State Key Laboratory of Cancer Biology, the Fourth Military Medical University, Xi'an, China (XL); Institute for Systems Biology, Seattle, WA (IS); Department of Experimental Oncology and Molecular Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy (LDC, DM).
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Yang FQ, Zhang HM, Chen SJ, Yan Y, Zheng JH. MiR-506 is down-regulated in clear cell renal cell carcinoma and inhibits cell growth and metastasis via targeting FLOT1. PLoS One 2015; 10:e0120258. [PMID: 25793370 PMCID: PMC4368579 DOI: 10.1371/journal.pone.0120258] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Accepted: 01/21/2015] [Indexed: 01/01/2023] Open
Abstract
Background Some microRNAs (miRNAs) are abnormally expressed in cancer and contribute to tumorigenesis. In the present study, we investigated the role of miR-506 in clear cell renal cell carcinoma (ccRCC). Methods miR-506 expression was detected in renal cancer cell lines 786-O, ACHN, Caki-1, and Caki-2 and ccRCC specimens by quantitative real-time-PCR. We assessed the association of miR-506 expression with pathology and prognosis in ccRCC patients. We over-expressed and knocked-down miR-506 expression in two renal cancer cell lines, 786-O and ACHN, and assessed the impact on cell proliferation, migration and invasion. A luciferase reporter assay was conducted to confirm the target gene of miR-506 in renal cancer cell lines. Results miR-506 was significantly down-regulated in renal cancer cell lines and ccRCC specimens. Low miR-506 expression in ccRCC specimens was associated with an advanced clinical stage and poor prognosis. miR-506 expression was an independent prognostic marker of overall ccRCC patient survival in a multivariate analysis. Over-expression of miR-506 in renal cancer cells decreased cell growth and metastasis, In contrast, down-regulation of miR-506 expression promoted renal cancer cell growth and metastasis. FLOT1, a potential target gene of miR-506, was inversely correlated with miR-506 expression in ccRCC tissues. Consistent with the effect of miR-506, knockdown of FLOT1 by siRNA inhibited cell malignant behaviors. Rescue of FLOT1 expression partially restored the effects of miR-506. Conclusions miR-506 exerts its anti-cancer function by directly targeting FLOT1 in renal cancer, indicating a potential novel therapeutic role in renal cancer treatment.
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Affiliation(s)
- Feng-qiang Yang
- Department of Urology, Shanghai Tenth People's Hospital, Tongji University, Shanghai, China
| | - Hai-ming Zhang
- Department of Urology, Shanghai Tenth People's Hospital, Tongji University, Shanghai, China
| | - Shao-Jun Chen
- Department of Urology, Shanghai Tenth People's Hospital, Tongji University, Shanghai, China
| | - Yang Yan
- Department of Urology, Shanghai Tenth People's Hospital, Tongji University, Shanghai, China
| | - Jun-hua Zheng
- Department of Urology, Shanghai Tenth People's Hospital, Tongji University, Shanghai, China
- * E-mail:
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31
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Marrone AK, Beland FA, Pogribny IP. Noncoding RNA response to xenobiotic exposure: an indicator of toxicity and carcinogenicity. Expert Opin Drug Metab Toxicol 2014; 10:1409-22. [PMID: 25171492 DOI: 10.1517/17425255.2014.954312] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
INTRODUCTION Human exposure to certain environmental and occupational chemicals is one of the major risk factors for noncommunicable diseases, including cancer. Therefore, it is desirable to take advantage of subtle exposure-related adverse cellular events for early disease detection and to identify potential dangers caused by new and currently under-evaluated drugs and chemicals. Nongenotoxic events due to carcinogen/toxicant exposure are a general hallmark of sustained cellular stress leading to tumorigenesis. These processes are globally regulated via noncoding RNAs (ncRNAs). Tumorigenesis-associated genotoxic and nongenotoxic events lead to the altered expression of ncRNAs and may provide a mechanistic link between chemical exposure and tumorigenesis. Current advances in toxicogenomics are beginning to provide valuable insight into gene-chemical interactions at the transcriptome level. AREAS COVERED In this review, we summarize recent information about the impact of xenobiotics on ncRNAs. Evidence highlighted in this review suggests a critical role of ncRNAs in response to carcinogen/toxicant exposure. EXPERT OPINION Benefits for the use of ncRNAs in carcinogenicity assessment include remarkable tissue specificity, early appearance, low baseline variability, and their presence and stability in biological fluids, which suggests that the incorporation of ncRNAs in the evaluation of cancer risk assessment may enhance substantially the efficiency of toxicity and carcinogenicity testing.
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Affiliation(s)
- April K Marrone
- Commissioner Fellow, Research Chemist,National Center for Toxicological Research, Division of Biochemical Toxicology , Jefferson, AR , USA
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Yang Q, Zhang S, Liu H, Wu J, Xu E, Peng B, Jiang Y. Oncogenic role of long noncoding RNA AF118081 in anti-benzo[a]pyrene-trans-7,8-dihydrodiol-9,10-epoxide-transformed 16HBE cells. Toxicol Lett 2014; 229:430-9. [PMID: 25050996 DOI: 10.1016/j.toxlet.2014.07.004] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2014] [Revised: 07/02/2014] [Accepted: 07/06/2014] [Indexed: 01/23/2023]
Abstract
Lung cancer is the leading cause of cancer deaths and remains an important public health problem worldwide. Long noncoding RNAs (lncRNAs) are newly identified regulators of tumorigenesis and tumor progression. However, the role of lncRNAs in lung cancer induced by environmental carcinogens remains largely unknown. In this study, an lncRNA microarray was used to compare the expression profiles of malignantly transformed 16HBE cells (16HBE-T) induced with anti-benzo[a]pyrene-trans-7,8-diol-9,10-epoxide (anti-BPDE) and normal 16HBE cells (16HBE-N). Using quantitative real-time reverse transcription-polymerase chain reaction (qRT-PCR), lncRNA AF118081 was identified as the most significantly overexpressed lncRNA in 16HBE-T cells, lung cancer cells, and patient samples. Cell proliferation, colony formation, apoptosis, migration, and invasion were assayed in 16HBE-T cells following the knockdown of lncRNA AF118081 with small interfering RNA. AF118081 knockdown inhibited cell growth and tumor invasion. An in vivo (nude mouse) model was then used to assay tumor growth, and the downregulation of AF118081 clearly suppressed tumor growth, consistent with the results of the in vitro assays. Together, these findings identify a new oncogenic lncRNA, lncRNA AF118081, in malignantly transformed 16HBE cells. This enhances our understanding of lncRNAs as important regulatory elements in chemical carcinogenesis and potential targets of lung cancer therapies.
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Affiliation(s)
- Qiaoyuan Yang
- Institute for Chemical Carcinogenesis, State Key Laboratory for Respiratory Diseases, Guangzhou Medical University, Guangzhou 510182, PR China
| | - Shaozhu Zhang
- Institute for Chemical Carcinogenesis, State Key Laboratory for Respiratory Diseases, Guangzhou Medical University, Guangzhou 510182, PR China
| | - Huanying Liu
- Institute for Chemical Carcinogenesis, State Key Laboratory for Respiratory Diseases, Guangzhou Medical University, Guangzhou 510182, PR China
| | - Jianjun Wu
- Institute for Chemical Carcinogenesis, State Key Laboratory for Respiratory Diseases, Guangzhou Medical University, Guangzhou 510182, PR China
| | - Enwu Xu
- Department of Thoracic Surgery, General Hospital of Guangzhou Military Command of Chinese People's Liberation Army, Guangzhou 510010, PR China
| | - Baoying Peng
- Institute for Chemical Carcinogenesis, State Key Laboratory for Respiratory Diseases, Guangzhou Medical University, Guangzhou 510182, PR China
| | - Yiguo Jiang
- Institute for Chemical Carcinogenesis, State Key Laboratory for Respiratory Diseases, Guangzhou Medical University, Guangzhou 510182, PR China.
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Wu J, Peng X, Zhou A, Qiao M, Wu H, Xiao H, Liu G, Zheng X, Zhang S, Mei S. MiR-506 inhibits PRRSV replication in MARC-145 cells via CD151. Mol Cell Biochem 2014; 394:275-81. [PMID: 24878990 DOI: 10.1007/s11010-014-2103-6] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2014] [Accepted: 05/15/2014] [Indexed: 01/23/2023]
Abstract
Porcine reproductive and respiratory syndrome (PRRS) is one of the most economically important diseases of swine, which is caused by PRRS virus (PRRSV). CD151, one of PRRSV entry mediators, determines the cell susceptibility for PRRSV. Emerging evidence indicates that the host microRNAs (miRNAs) play key roles in modulating virus infection and viral pathogenesis. In the present study, targeting porcine CD151 miRNAs were identified, and their function during PRRSV infection in MARC-145 cells was further verified. We found that miR-506 could directly target porcine CD151 3'-UTR mRNA by luciferase reporter assay. Overexpression of miR-506 significantly decreased CD151 expression at both mRNA and protein levels. Furthermore, overexpression of miR-506 reduced cellular PRRSV replication and virus release in MARC-145 cells. Our results suggested that miR-506 could inhibit PRRSV replication by directly targeting PRRSV receptor of CD151 in MARC-145 cells. However, the molecular mechanisms of miR-506 and its function in vivo need further investigation.
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Affiliation(s)
- Junjing Wu
- Hubei Key Laboratory of Animal Embryo and Molecular Breeding, Institute of Animal Husbandry and Veterinary, Hubei Provincial Academy of Agricultural Sciences, Wuhan, 430064, People's Republic of China
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Liu G, Sun Y, Ji P, Li X, Cogdell D, Yang D, Parker Kerrigan BC, Shmulevich I, Chen K, Sood AK, Xue F, Zhang W. MiR-506 suppresses proliferation and induces senescence by directly targeting the CDK4/6-FOXM1 axis in ovarian cancer. J Pathol 2014; 233:308-18. [PMID: 24604117 DOI: 10.1002/path.4348] [Citation(s) in RCA: 96] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2013] [Revised: 02/08/2014] [Accepted: 02/22/2014] [Indexed: 01/13/2023]
Abstract
Ovarian carcinoma is the most lethal gynaecological malignancy. Better understanding of the molecular pathogenesis of this disease and effective targeted therapies are needed to improve patient outcomes. MicroRNAs play important roles in cancer progression and have the potential for use as either therapeutic agents or targets. Studies in other cancers have suggested that miR-506 has anti-tumour activity, but its function has yet to be elucidated. We found that deregulation of miR-506 in ovarian carcinoma promotes an aggressive phenotype. Ectopic over-expression of miR-506 in ovarian cancer cells was sufficient to inhibit proliferation and to promote senescence. We also demonstrated that CDK4 and CDK6 are direct targets of miR-506, and that miR-506 can inhibit CDK4/6-FOXM1 signalling, which is activated in the majority of serous ovarian carcinomas. This newly recognized miR-506-CDK4/6-FOXM1 axis provides further insight into the pathogenesis of ovarian carcinoma and identifies a potential novel therapeutic agent.
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Affiliation(s)
- Guoyan Liu
- Department of Pathology, University of Texas MD Anderson Cancer Center, Houston, TX, USA; Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, People's Republic of China
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miR-506 acts as a tumor suppressor by directly targeting the hedgehog pathway transcription factor Gli3 in human cervical cancer. Oncogene 2014; 34:717-25. [PMID: 24608427 DOI: 10.1038/onc.2014.9] [Citation(s) in RCA: 101] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2013] [Revised: 02/02/2014] [Accepted: 02/03/2014] [Indexed: 02/07/2023]
Abstract
Although significant advances have recently been made in the diagnosis and treatment of cervical carcinoma, the long-term survival rate for advanced cervical cancer remains low. Therefore, an urgent need exists to both uncover the molecular mechanisms and identify potential therapeutic targets for the treatment of cervical cancer. MicroRNAs (miRNAs) have important roles in cancer progression and could be used as either potential therapeutic agents or targets. miR-506 is a component of an X chromosome-linked miRNA cluster. The biological functions of miR-506 have not been well established. In this study, we found that miR-506 expression was downregulated in approximately 80% of the cervical cancer samples examined and inversely correlated with the expression of Ki-67, a marker of cell proliferation. Gain-of-function and loss-of-function studies in human cervical cancer, Caski and SiHa cells, demonstrated that miR-506 acts as a tumor suppressor by inhibiting cervical cancer growth in vitro and in vivo. Further studies showed that miR-506 induced cell cycle arrest at the G1/S transition, and enhanced apoptosis and chemosensitivity of cervical cancer cell. We subsequently identified Gli3, a hedgehog pathway transcription factor, as a direct target of miR-506 in cervical cancer. Furthermore, Gli3 silencing recapitulated the effects of miR-506, and reintroduction of Gli3 abrogated miR-506-induced cell growth arrest and apoptosis. Taken together, we conclude that miR-506 exerts its anti-proliferative function by directly targeting Gli3. This newly identified miR-506/Gli3 axis provides further insight into the pathogenesis of cervical cancer and indicates a potential novel therapeutic agent for the treatment of cervical cancer.
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Izzotti A, Pulliero A. The effects of environmental chemical carcinogens on the microRNA machinery. Int J Hyg Environ Health 2014; 217:601-27. [PMID: 24560354 DOI: 10.1016/j.ijheh.2014.01.001] [Citation(s) in RCA: 86] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Revised: 01/03/2014] [Accepted: 01/06/2014] [Indexed: 12/29/2022]
Abstract
The first evidence that microRNA expression is early altered by exposure to environmental chemical carcinogens in still healthy organisms was obtained for cigarette smoke. To date, the cumulative experimental data indicate that similar effects are caused by a variety of environmental carcinogens, including polycyclic aromatic hydrocarbons, nitropyrenes, endocrine disruptors, airborne mixtures, carcinogens in food and water, and carcinogenic drugs. Accordingly, the alteration of miRNA expression is a general mechanism that plays an important pathogenic role in linking exposure to environmental toxic agents with their pathological consequences, mainly including cancer development. This review summarizes the existing experimental evidence concerning the effects of chemical carcinogens on the microRNA machinery. For each carcinogen, the specific microRNA alteration signature, as detected in experimental studies, is reported. These data are useful for applying microRNA alterations as early biomarkers of biological effects in healthy organisms exposed to environmental carcinogens. However, microRNA alteration results in carcinogenesis only if accompanied by other molecular damages. As an example, microRNAs altered by chemical carcinogens often inhibits the expression of mutated oncogenes. The long-term exposure to chemical carcinogens causes irreversible suppression of microRNA expression thus allowing the transduction into proteins of mutated oncogenes. This review also analyzes the existing knowledge regarding the mechanisms by which environmental carcinogens alter microRNA expression. The underlying molecular mechanism involves p53-microRNA interconnection, microRNA adduct formation, and alterations of Dicer function. On the whole, reported findings provide evidence that microRNA analysis is a molecular toxicology tool that can elucidate the pathogenic mechanisms activated by environmental carcinogens.
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Affiliation(s)
- A Izzotti
- Department of Health Sciences, University of Genoa, Italy; Mutagenesis Unit, IRCCS University Hospital San Martino - IST National Research Cancer Institute, Genoa, Italy.
| | - A Pulliero
- Department of Health Sciences, University of Genoa, Italy
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Zhao M, Sun J, Zhao Z. Synergetic regulatory networks mediated by oncogene-driven microRNAs and transcription factors in serous ovarian cancer. MOLECULAR BIOSYSTEMS 2013; 9:3187-98. [PMID: 24129674 PMCID: PMC3855196 DOI: 10.1039/c3mb70172g] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Although high-grade serous ovarian cancer (OVC) is the most lethal gynecologic malignancy in women, little is known about the regulatory mechanisms in the cellular processes that lead to this cancer. Recently, accumulated lines of evidence have shown that the interplay between transcription factors (TFs) and microRNAs (miRNAs) is critical in cellular regulation during tumorigenesis. A comprehensive investigation of TFs and miRNAs, and their target genes, may provide a deeper understanding of the regulatory mechanisms in the pathology of OVC. In this study, we have integrated three complementary algorithms into a framework, aiming to infer the regulation by miRNAs and TFs in conjunction with gene expression profiles. We demonstrated the utility of our framework by inferring 67 OVC-specific regulatory feed-forward loops (FFL) initiated by miRNAs or TFs in high-grade serous OVC. By analyzing these regulatory behaviors, we found that all the 67 FFLs are consistent in their regulatory effects on genes that are jointly targeted by miRNAs and TFs. Remarkably, we unveiled an unbalanced distribution of FFLs with different oncogenic effects. In total, 31 of the 67 coherent FFLs were mainly initiated by oncogenes. On the contrary, only 4 of the FFLs were initiated by tumor suppressor genes. These overwhelmingly observed oncogenic genes were further detected in a sub-network with 32 FFLs centered by miRNA let-7b and TF TCF7L1 to regulate cell differentiation. Closer inspection of 32 FFLs revealed that 75% of the miRNAs reportedly play functional roles in cell differentiation, especially when enriched in epithelial-mesenchymal transitions. This study provides a comprehensive pathophysiological overview of recurring coherent circuits in OVC that are co-regulated by miRNAs and TFs. The prevalence of oncogenic coherent FFLs in serous OVC suggests that oncogene-driven regulatory motifs could cooperatively act upon critical cellular processes such as cell differentiation in a highly efficient and consistent manner.
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Affiliation(s)
- Min Zhao
- Department of Biomedical Informatics, Vanderbilt University School of Medicine, Nashville, TN, USA.
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Singhal R, Bard JE, Nowak NJ, Buck MJ, Kandel ES. FOXO1 regulates expression of a microRNA cluster on X chromosome. Aging (Albany NY) 2013; 5:347-56. [PMID: 23748164 PMCID: PMC3701110 DOI: 10.18632/aging.100558] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Phosphoinositol-3-kinase (PI3K) pathway is a crucial modulator of many physiological and pathophysiological phenomena, including aging, diabetes and cancer. Protein kinase Akt, a downstream effector of PI3K, controls a plethora of cellular functions, including gene transcription. A key mechanism connecting Akt activity to changes in gene expression is inhibitory phosphorylation of FOXO family of transcription factors. Accordingly, altered expression of FOXO targets may account for many biological consequences of PI3K/Akt signaling. While the previous efforts focused on FOXO-dependent regulation of protein-coding genes, non-coding RNA genes have emerged as equally important targets of many transcription factors. Therefore, we utilized a regulated form of FOXO1 to profile FOXO1-dependent changes in miRNA expression in human cells. Both microarray hybridization and next-generation sequencing revealed changes in the products of a miRNA cluster on X chromosome. Rapid induction of these miRNAs occurred independently of de novo protein synthesis. Furthermore, inhibition of PI3K in cancer cell lines caused derepression of these miRNAs, as would be expected for FOXO-regulated genes. Members of the major oncogenic cascades are significantly overrepresented among the predicted targets of the miRNAs, consistent with tumor-suppressive role of FOXO1. The discovered miRNAs represent new candidate mediators of FOXO1 functions and possible biomarkers of its activity.
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Affiliation(s)
- Ruchi Singhal
- Department of Cell Stress Biology, Roswell Park Cancer Institute, BLSC L3-318, Buffalo, NY 14263, USA
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Markova SM, Kroetz DL. ABCC4 is regulated by microRNA-124a and microRNA-506. Biochem Pharmacol 2013; 87:515-22. [PMID: 24184504 DOI: 10.1016/j.bcp.2013.10.017] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2013] [Revised: 10/17/2013] [Accepted: 10/18/2013] [Indexed: 12/16/2022]
Abstract
Multidrug resistance protein 4 (MRP4, ABCC4) is an efflux membrane transporter expressed in renal tubules, hepatocytes, brain capillaries, prostate and blood cells. MRP4 drives energy dependent efflux of important physiological and pharmacological compounds. MRP4 expression and function is highly variable but cannot be fully attributed to known mechanisms. The goal of this study was to characterize ABCC4 regulation by miRNAs and to assess the influence of ABCC4 3'-UTR polymorphisms on ABCC4 regulation by miRNAs. miR-124a and miR-506 decreased MRP4 protein levels in HEK293T/17 cells 20-30% and MRP4 function by 50%. These miRNAs did not affect ABCC4 mRNA expression. Moreover, miR-124a and miR-506 expression was negatively correlated with MRP4 protein expression in 26 human kidney samples (Spearman r=-0.62, P=0.007 and r=-0.41, P=0.03 for miR-124a and miR-506, respectively). To assess the effect of ABCC4 3'-UTR polymorphisms, six common 3'-UTR haplotypes were inferred in Caucasians, African Americans and Asians and tested in luciferase reporter assays. Multiple ABCC4 3'-UTR haplotypes caused significant reductions in luciferase activity; in the presence of miR-124a or miR-506 mimics the luciferase activity of all six ABCC4 3'-UTR haplotypes was further reduced. Mutation of the putative binding site for miR-124a and miR-506 in the ABCC4 3'-UTR eliminated the effect of these miRNAs. In conclusion, ABCC4 is directly regulated by miR-124a and miR-506 but polymorphisms in the ABCC4 3'-UTR have no significant effect on this miRNA regulation. Regulation of ABCC4 by miRNAs represents a novel mechanism for regulation of MRP4 function.
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Affiliation(s)
- Svetlana M Markova
- Department of Bioengineering and Therapeutic Sciences (SMM, DLK) and Institute for Human Genetics (DLK) , 1550 4th Street RH584E, San Francisco, CA 94158-2911, USA
| | - Deanna L Kroetz
- Department of Bioengineering and Therapeutic Sciences (SMM, DLK) and Institute for Human Genetics (DLK) , 1550 4th Street RH584E, San Francisco, CA 94158-2911, USA.
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Regulation of the unfolded protein response by microRNAs. Cell Mol Biol Lett 2013; 18:555-78. [PMID: 24092331 PMCID: PMC3877167 DOI: 10.2478/s11658-013-0106-z] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2013] [Accepted: 09/19/2013] [Indexed: 12/24/2022] Open
Abstract
The unfolded protein response (UPR) is an adaptive response to the stress that is caused by an accumulation of misfolded proteins in the lumen of the endoplasmic reticulum (ER). It is an important component of cellular homeostasis. During ER stress, the UPR increases the protein-folding capacity of the endoplasmic reticulum to relieve the stress. Failure to recover leads to apoptosis. Specific cellular mechanisms are required for the cellular recovery phase after UPR activation. Using bioinformatics tools, we identified a number of microRNAs that are predicted to decrease the mRNA expression levels for a number of critical components of the UPR. In this review, we discuss the potential role of microRNAs as key regulators of this pathway and describe how microRNAs may play an essential role in turning off the UPR after the stress has subsided.
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Qin J, Li MJ, Wang P, Wong NS, Wong MP, Xia Z, Tsao GSW, Zhang MQ, Wang J. ProteoMirExpress: inferring microRNA and protein-centered regulatory networks from high-throughput proteomic and mRNA expression data. Mol Cell Proteomics 2013; 12:3379-87. [PMID: 23924514 DOI: 10.1074/mcp.o112.019851] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
MicroRNAs (miRNAs) regulate gene expression through translational repression and RNA degradation. Recently developed high-throughput proteomic methods measure gene expression changes at protein level and therefore can reveal the direct effects of miRNAs' translational repression. Here, we present a web server, ProteoMirExpress, that integrates proteomic and mRNA expression data together to infer miRNA-centered regulatory networks. With both types of high-throughput data from the users, ProteoMirExpress is able to discover not only miRNA targets that have decreased mRNA, but also subgroups of targets with suppressed proteins whose mRNAs are not significantly changed or with decreased mRNA whose proteins are not significantly changed, which are usually ignored by most current methods. Furthermore, both direct and indirect targets of miRNAs can be detected. Therefore, ProteoMirExpress provides more comprehensive miRNA-centered regulatory networks. We used several published data to assess the quality of our inferred networks and prove the value of our server. ProteoMirExpress is available online, with free access to academic users.
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Affiliation(s)
- Jing Qin
- Department of Biochemistry, The University of Hong Kong, Hong Kong SAR, China
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42
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Yang D, Sun Y, Hu L, Zheng H, Ji P, Pecot CV, Zhao Y, Reynolds S, Cheng H, Rupaimoole R, Cogdell D, Nykter M, Broaddus R, Rodriguez-Aguayo C, Lopez-Berestein G, Liu J, Shmulevich I, Sood AK, Chen K, Zhang W. Integrated analyses identify a master microRNA regulatory network for the mesenchymal subtype in serous ovarian cancer. Cancer Cell 2013; 23:186-99. [PMID: 23410973 PMCID: PMC3603369 DOI: 10.1016/j.ccr.2012.12.020] [Citation(s) in RCA: 314] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2011] [Revised: 11/08/2011] [Accepted: 12/28/2012] [Indexed: 12/23/2022]
Abstract
Integrated genomic analyses revealed a miRNA-regulatory network that further defined a robust integrated mesenchymal subtype associated with poor overall survival in 459 cases of serous ovarian cancer (OvCa) from The Cancer Genome Atlas and 560 cases from independent cohorts. Eight key miRNAs, including miR-506, miR-141, and miR-200a, were predicted to regulate 89% of the targets in this network. Follow-up functional experiments illustrate that miR-506 augmented E-cadherin expression, inhibited cell migration and invasion, and prevented TGFβ-induced epithelial-mesenchymal transition by targeting SNAI2, a transcriptional repressor of E-cadherin. In human OvCa, miR-506 expression was correlated with decreased SNAI2 and VIM, elevated E-cadherin, and beneficial prognosis. Nanoparticle delivery of miR-506 in orthotopic OvCa mouse models led to E-cadherin induction and reduced tumor growth.
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Affiliation(s)
- Da Yang
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Yan Sun
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
- Department of Pathology, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, China
| | - Limei Hu
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Hong Zheng
- Department of Epidemiology and Biostatistics, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, China
| | - Ping Ji
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Chad V. Pecot
- Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Yanrui Zhao
- Department of Epidemiology and Biostatistics, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, China
| | | | - Hanyin Cheng
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Rajesha Rupaimoole
- Department of Gynecologic Oncology and Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - David Cogdell
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Matti Nykter
- Tampere University of Technology, Tampere 33101, Finland
| | - Russell Broaddus
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Cristian Rodriguez-Aguayo
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Gabriel Lopez-Berestein
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
- Center for RNAi and Non-Coding RNA, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Jinsong Liu
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | | | - Anil K. Sood
- Department of Gynecologic Oncology and Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
- Center for RNAi and Non-Coding RNA, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Kexin Chen
- Department of Epidemiology and Biostatistics, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, China
| | - Wei Zhang
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
- Center for RNAi and Non-Coding RNA, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
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Wu J, Yang T, Li X, Yang Q, Liu R, Huang J, Li Y, Yang C, Jiang Y. Alteration of serum miR-206 and miR-133b is associated with lung carcinogenesis induced by 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone. Toxicol Appl Pharmacol 2013; 267:238-46. [PMID: 23337359 DOI: 10.1016/j.taap.2013.01.002] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2012] [Revised: 12/22/2012] [Accepted: 01/04/2013] [Indexed: 01/09/2023]
Abstract
The alteration of microRNA (miRNA) expression plays an important role in chemical carcinogenesis. Presently, few reports have been published that concern the significance of circulating miRNAs in lung carcinogenesis induced by environmental carcinogens. The purpose of this study was to identify serum miRNAs that could be associated with lung carcinogenesis induced by 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK). Male F344 rats were systemically administered with NNK. The rat serum differential expression profiles of miRNAs were analyzed by small RNA solexa sequencing. Using quantitative real-time PCR, the differentially expressed serum miRNAs were identified in each individual rat. Serum miR-206 and miR-133b were selected for further identification in rat serum at different stages of lung carcinogenesis; we detected the levels of serum miR-206 and miR-133b in lung cancer tissues induced by NNK. NNK causes significant alteration of serum miRNA expression. Compared to the control group, serum miR-206 and miR-133b were significantly up-regulated in the early stage of NNK-induced lung carcinogenesis. miR-206 and miR-133b exhibited low-expression in lung cancer tissues. Our results demonstrate that lung carcinogen NNK exposure changes the expression of serum miRNAs. Serum miR-206 and miR-133b could be associated with lung carcinogenesis induced by NNK.
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Affiliation(s)
- Jianjun Wu
- Institute for Chemical Carcinogenesis, State Key Laboratory of Respiratory Disease, Guangzhou Medical University, Guangzhou 510182, People's Republic of China
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Bagnoli M, De Cecco L, Granata A, Nicoletti R, Marchesi E, Alberti P, Valeri B, Libra M, Barbareschi M, Raspagliesi F, Mezzanzanica D, Canevari S. Identification of a chrXq27.3 microRNA cluster associated with early relapse in advanced stage ovarian cancer patients. Oncotarget 2012; 2:1265-78. [PMID: 22246208 PMCID: PMC3282083 DOI: 10.18632/oncotarget.401] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
A major challenge in advanced-stage epithelial ovarian cancer (EOC) is prediction of chemoresistant relapse. Our aim was to identify a microRNA (miRNA) signature associated with early relapse in advanced-stage EOC patients. miRNA expression was assessed by microarray profiling in training (n = 55) and test (n = 30) sets selected on the basis of time to relapse (TTR), followed by internal quantitative reverse transcriptase-PCR validation on a set of 45 consecutive cases unselected for clinical response and external in silico validation on publicly available datasets. Thirty-two differentially expressed miRNAs in early vs. late relapsing patients were identified in the training set. In the test set, 8 of these, belonging to a cluster located on chrXq27.3, were down-modulated in early relapsing patients. Hierarchical clustering of the internal validation set according to chrXq27.3 miRNA expression associated low miRNA expression with shorter TTR (log-rank P=0.00074, HR 2.44). The cluster was an independent prognostic factor in both internal and external validation sets. Forced expression of chrXq27.3-cluster selected miRNAs in human EOC cellular models was associated to reduction of cell proliferation and increased sensitivity to cisplatin. The role of down-modulation of the chrXq27.3 miRNA cluster in early relapse of advanced-stage EOC patients and its association to a reduced sensitivity to chemotherapeutic treatments warrant further investigation.
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Affiliation(s)
- Marina Bagnoli
- Depts. of Experimental Oncology and Molecular Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
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Ling M, Li Y, Xu Y, Pang Y, Shen L, Jiang R, Zhao Y, Yang X, Zhang J, Zhou J, Wang X, Liu Q. Regulation of miRNA-21 by reactive oxygen species-activated ERK/NF-κB in arsenite-induced cell transformation. Free Radic Biol Med 2012; 52:1508-18. [PMID: 22387281 DOI: 10.1016/j.freeradbiomed.2012.02.020] [Citation(s) in RCA: 113] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2011] [Revised: 02/11/2012] [Accepted: 02/15/2012] [Indexed: 12/12/2022]
Abstract
After acute exposure of cells to arsenic, reactive oxygen species mediate changes in cell behavior, including activation of proliferative signaling. For chronic exposure to arsenic, however, the function of reactive oxygen species in cell transformation remains poorly understood. Although microRNA-21 (miR-21) has been implicated in various aspects of carcinogenesis, its functions and molecular mechanisms in carcinogen-induced tumorigenesis are unclear. The purpose of this study was to determine if miR-21 is involved in arsenite-induced malignant transformation and to characterize the associated signaling pathways. During arsenite-induced transformation of human embryo lung fibroblast (HELF) cells, miR-21 was upregulated, and the extracellular signal-regulated kinase (ERK)/nuclear factor-κB (NF-κB) signal pathway was activated. Moreover, superoxide radical dismutase (a scavenger of superoxide) and catalase (a scavenger of hydroperoxides) blocked the arsenite-induced effects in HELF cells and mouse embryonic fibroblasts. Blockage of ERK by the inhibitor U0126 or inhibition of NF-κB p65 by siRNA or Bay 11-7082 prevented the increases in miR-21 and the decreases in Spry1, Pten, and Pdcd4, the target proteins of miR-21, induced by arsenite. As determined by a ChIP-qPCR assay, NF-κB p65 regulated miR-21 expression by binding directly to the promoter of miR-21. Further, anti-miR-21 downregulated miR-21 expression and prevented the arsenite-induced activation of ERK via the increase in Spry1, indicating that miR-21 has a feedback effect in regulating ERK activation. Overexpression of miR-21 with an miR-21 mimic and feedback activation of ERK and NF-κB via the decrease in Spry1 promoted the malignancy of HELF cells exposed to arsenite, but knockdown of miR-21 with anti-miR-21 and feedback blockage of ERK and NF-κB activation through an increase in Spry1 decreased anchorage-independent growth of arsenite-transformed cells. Thus, the transformation of HELF cells induced by chronic exposure to arsenite is mediated by increased miR-21 expression, which, in turn, is mediated by reactive oxygen species activation of the ERK/NF-κB pathway.
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Affiliation(s)
- Min Ling
- Institute of Toxicology, Nanjing Medical University, Nanjing 210029, Jiangsu, People's Republic of China
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Zhai Q, Zhou L, Zhao C, Wan J, Yu Z, Guo X, Qin J, Chen J, Lu R. Identification of miR-508-3p and miR-509-3p that are associated with cell invasion and migration and involved in the apoptosis of renal cell carcinoma. Biochem Biophys Res Commun 2012; 419:621-6. [PMID: 22369946 DOI: 10.1016/j.bbrc.2012.02.060] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2012] [Accepted: 02/10/2012] [Indexed: 01/07/2023]
Abstract
MicroRNAs (miRNAs) have emerged as powerful regulators of multiple processes linked to human cancer, including cell apoptosis, proliferation and migration, suggesting that the regulation of miRNA function could play a critical role in cancer progression. Recent studies have found that human serum/plasma contains stably expressed miRNAs. If they prove indicative of disease states, miRNAs measured from peripheral blood samples may be a source for routine clinical detection of cancer. Our studies showed that both miR-508-3p and miR-509-3p were down-regulated in renal cancer tissues. The level of miR-508-3p but not miR-509-3p in renal cell carcinoma (RCC) patient plasma demonstrated significant differences from that in control plasma. In addition, the overexpression of miR-508-3p and miR-509-3p suppressed the proliferation of RCC cells (786-0), induced cell apoptosis and inhibited cell migration in vitro. Our data demonstrated that miR-508-3p and miR-509-3p played an important role as tumor suppressor genes during tumor formation and that they may serve as novel diagnostic markers for RCC.
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Affiliation(s)
- Qingna Zhai
- Department of Clinical Laboratory, Peking University Shenzhen Hospital, Guangdong, China
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MicroRNA 506 regulates expression of PPAR alpha in hydroxycamptothecin-resistant human colon cancer cells. FEBS Lett 2011; 585:3560-8. [PMID: 22036718 DOI: 10.1016/j.febslet.2011.10.021] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2011] [Revised: 09/23/2011] [Accepted: 10/12/2011] [Indexed: 12/19/2022]
Abstract
Chemotherapeutic drug resistance remains a major obstacle to the successful treatment of colon cancer. Here, we show that 77 differentially expressed miRNAs were identified in SW1116/HCPT versus SW1116, and over-expressed miR-506 in SW1116/HCPT cells was validated. Then it was indicated that PPARα is a common target of miR-506 by using a luciferase reporter assay. Our results also demonstrated that cytotoxic ability of HCPT requires the concomitant presence of PPARα, and that loss of PPARα expression imparts resistance to HCPTs anti-tumor effects. All together, our studies indicate that miR-506 over-expression in established HCPT-resistant colon cancer cell line confers resistance to HCPT by inhibiting PPARα expression, then providing a rationale for the development of miRNA-based strategies for reversing resistance in HCPT-resistant colon cancer cells.
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