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Lamprou E, Sotiriou M, Kalligosfyri PM, Kalogianni DP, Christopoulos TK. A universal lateral flow assay for microRNA visual detection in urine samples. Talanta 2023; 262:124682. [PMID: 37244240 DOI: 10.1016/j.talanta.2023.124682] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 04/25/2023] [Accepted: 05/16/2023] [Indexed: 05/29/2023]
Abstract
MicroRNAs (miRNAs) have been emerged as novel and significant biomarkers in liquid biopsy that can be found in different body fluids. Several techniques have been developed and applied for miRNAs analysis, including nucleic acid-based amplification methods, next generation sequencing, DNA microarrays and new genome-editing methods. These methods, however, are time-consuming and require expensive instruments and specially trained personnel. Biosensors, on the other hand, are alternative and valuable analytical/diagnostic tools due to their simplicity, cost-effectiveness, rapid analysis and ease of use. Several biosensors, especially nanotechnology-based ones, have been developed for miRNA analysis that are based either on target amplification or signal amplification and target re-cycling for sensitive detection. At this point of view, we have introduced a new and universal lateral flow assay in combination with reverse transcription - polymerase chain reaction (RT-PCR) and gold nanoparticles as reporters for the detection of miR-21 and miR-let-7a in human urine. It is the first time that such a biosensor has been applied to the detection of microRNAs in urine. As low as 102-103 copies of miR-21 and 102--104 copies of miR-let-7a added in urine were detectable by the proposed lateral flow assay with great specificity and repeatability (%CVs <4.5%).
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Affiliation(s)
- Eleni Lamprou
- Department of Chemistry, University of Patras, GR26504, Rio, Patras, Greece
| | - Markos Sotiriou
- Department of Chemistry, University of Patras, GR26504, Rio, Patras, Greece
| | | | | | - Theodore K Christopoulos
- Department of Chemistry, University of Patras, GR26504, Rio, Patras, Greece; Institute of Chemical Engineering Sciences, Foundation for Research and Technology Hellas (FORTH/ICE-HT), Patras, 26504, Greece
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Hoelzle CR, Arnoult S, Borém CRM, Ottone M, de Magalhães KCSF, da Silva IL, Simões RT. microRNA Levels in Cervical Cancer Samples and Relationship with Lesion Grade and HPV Infection. Microrna 2021; 10:139-145. [PMID: 34086555 DOI: 10.2174/2211536610666210604123534] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 12/12/2020] [Accepted: 03/12/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND miR-21, miR-214, and miR-let-7a are three validated and well-known miRNAs. miR-21 is described as an "oncomir," while miR-214 and miR-let-7a are described mainly as tumor suppressors. The role of these miRNAs remains unclear in cervical cancer, an important malignancy among women worldwide and responsible for many deaths every year. OBJECTIVE The objective of this study was to describe the expression profile of miR-21, miR-214, and miR-let-7a in plasma and cervical scraping from a control group and patients with different grades of cervical lesions and invasive cervical cancer, and then correlate with HPV infection groups. METHODS Plasma and cervical scraping were submitted to DNA and RNA extraction. HPV detection and typing were performed by conventional PCR followed by PAGE to amplicons interpretation. The miRNA relative expression in plasma and cervical scraping samples was performed by real-time PCR using specific TaqMan probes. RESULTS miR-21 (p=0.0277) and miR-214 (p=0.0151) were up-regulated in cervical scraping samples of the invasive cervical cancer (ICC) group. However, miR-214 was also up-regulated in the LSIL group (p=0.0062). Both miRNAs were not related to HPV infection. However, miR-let-7a was higher in HPV positive plasma samples (p=0.0433) than in HPV negative plasma samples, and the correlation analysis confirmed the association between the levels of this miRNA with the presence of HPV (p=0.0407; r=0.3029), but not with lesion grade (p>0.05). CONCLUSION Our results suggest that miR-21 is related to cervical cancer progression and miR-214 appears to have an ambiguous role in cervical lesions. miR-let-7a may be upregulated at the systemic level in patients with HPV infection.
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Affiliation(s)
- Carolina R Hoelzle
- Santa Casa de Belo Horizonte Ensino e Pesquisa - EP/SCBH. Molecular Biology and Biomarkers Laboratory. Belo Horizonte, Minas Gerais, Brazil
| | - Solène Arnoult
- Polytech Marseille. Aix-Marseille Université. Marseille, France
| | - Cinthya R M Borém
- Santa Casa de Belo Horizonte Ensino e Pesquisa - EP/SCBH. Molecular Biology and Biomarkers Laboratory. Belo Horizonte, Minas Gerais, Brazil
| | - Mariana Ottone
- Santa Casa de Belo Horizonte Ensino e Pesquisa - EP/SCBH. Molecular Biology and Biomarkers Laboratory. Belo Horizonte, Minas Gerais, Brazil
| | - Kênia C S F de Magalhães
- Santa Casa de Belo Horizonte Ensino e Pesquisa - EP/SCBH. Molecular Biology and Biomarkers Laboratory. Belo Horizonte, Minas Gerais, Brazil
| | - Istéfani L da Silva
- Center for Biological and Health Sciences. Federal University of West of Bahia (UFOB), Bahia, Brazil
| | - Renata T Simões
- Santa Casa de Belo Horizonte Ensino e Pesquisa - EP/SCBH. Molecular Biology and Biomarkers Laboratory. Belo Horizonte, Minas Gerais, Brazil
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Luo C, Zhang J, Zhang Y, Zhang X, Chen Y, Fan W. Low expression of miR-let-7a promotes cell growth and invasion through the regulation of c-Myc in oral squamous cell carcinoma. Cell Cycle 2020; 19:1983-1993. [PMID: 32594835 PMCID: PMC7469679 DOI: 10.1080/15384101.2020.1786633] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 04/15/2020] [Accepted: 04/27/2020] [Indexed: 12/30/2022] Open
Abstract
In oral squamous cell carcinoma (OSCC), abnormal expression of microRNAs has been extensively reported. MiR-let-7a has been validated as a critical regulator of multiple cancers, but the biological process involved and its potential role in OSCC remain unknown.We first analyzed the differential expression of miR-let-7a in cancer tissues, adjacent noncancerous tissues and cell lines. The functional role of miR-let-7a in OSCC cell lines was evaluated by using colony formation assays, cell proliferation and transwell invasion assays in vitro. In addition, subcutaneous xenotransplantation of miR-let-7a transfected cells into nude mouse model was carried out to explore the potential function of miR-let-7a in vivo.miR-let-7a levels were found to be significantly downregulated in OSCC tissues compared with matched normal tissues (n = 60), and lower expression of miR-let-7a was related to poor prognosis in OSCC patients. Overexpression of MiR-let-7a induced a suppression in proliferation, invasion and migration and inhibited tumourigenesis in the nude mouse model. We also determined that c-Myc may serve as a direct target of miR-let-7a; furthermore, upregulated c-Myc expression could partially rescue the effects caused by miR-let-7a overexpression. miR-let-7a is low expression in OSCC, and promotes tumor development by directly targeting c-Myc. Our results may provide a potential therapeutic role for miR-let-7a in human OSCC.
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Affiliation(s)
- Chunyang Luo
- Department of Orthopaedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Jiyong Zhang
- Department of Orthopaedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yi Zhang
- Department of Orthopaedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Xiao Zhang
- Department of Orthopaedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yinan Chen
- Department of Anesthesiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Weimin Fan
- Department of Orthopaedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
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Sallas ML, Zapparoli D, Dos Santos MP, Pereira JN, Orcini WA, Peruquetti RL, Chen ES, de Arruda Cardoso Smith M, Payão SLM, Rasmussen LT. Dysregulated Expression of Apoptosis-Associated Genes and MicroRNAs and Their Involvement in Gastric Carcinogenesis. J Gastrointest Cancer 2020; 52:625-633. [PMID: 32583363 DOI: 10.1007/s12029-019-00353-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
PURPOSE Analyze the expression of caspase-9, Smac/DIABLO, XIAP, let-7a, and let-7b in patients with normal gastric tissue, chronic gastritis, and gastric adenocarcinoma. METHODS The expression of caspase-9, Smac/DIABLO, XIAP, let-7a, and let-7b by qRT-PCR was analyzed in 158 samples from 53 patients with normal gastric mucosa, 86 with chronic gastritis, and 19 with gastric cancer. RESULTS The comparison between the gastric cancer and the control group revealed a decreased expression of caspase-9 in gastric cancer tissues; considering the Helicobacter pylor presence, comparable results were revealed. Smac/DIABLO was increased in gastric cancer cells, while XIAP demonstrated no significant difference in the gene expression. The microRNA analysis revealed a decreased expression of let-7a and let-7b in samples positive to H. pylori infection and in gastric cancer group, regardless of the presence of the bacterium. CONCLUSION Our study provided some evidence of low activity of the intrinsic apoptosis pathway, as well as the influence of H. pylori on let-7a and let-7b expression.
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Affiliation(s)
| | - Diana Zapparoli
- Universidade do Sagrado Coração (USC), Bauru, São Paulo, Brazil
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Svingos AM, Asken BM, Bauer RM, DeKosky ST, Hromas GA, Jaffee MS, Hayes RL, Clugston JR. Exploratory study of sport-related concussion effects on peripheral micro-RNA expression. Brain Inj 2019; 33:1-7. [PMID: 30704304 DOI: 10.1080/02699052.2019.1573379] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
OBJECTIVE Explore changes in micro-RNA (miRNA) expression in blood after sport-related concussion (SRC) in collegiate athletes. METHODS Twenty-seven collegiate athletes (~41% male, ~75% white, age 18.8 ± 0.8 years) provided both baseline and post-SRC blood samples. Serum was analyzed for expression of miR-153-3p (n = 27), miR-223-3p (n = 23), miR-26a-5p (n = 26), miR-423-3p (n = 23), and miR-let-7a-5p (n = 23) at both time points via quantitative polymerase chain reaction (qPCR). Nonparametric analyses were used to compare miRNA expression changes between baseline and SRC and to evaluate associations with clinical outcomes (symptom severity, cognition, balance, and oculomotor function, and clinical recovery time). RESULTS Participants manifested a significant increase in miRNA expression following SRC for miR153-3p (Z = -2.180, p = .029, 59% of the participants increased post-SRC), miR223-3p (Z = -1.998, p = .046, 70% increased), and miR-let-7a-5p (Z = -2.190, p = .029, 65% increased). There were no statistically significant associations between changes in miRNA expression and clinical test scores, acute symptom severity, or clinical recovery time. CONCLUSION MiR-153-3p, miR-223-3p, and miR-let-7a-5p were significantly upregulated acutely following SRC in male and female collegiate athletes compared to baseline levels, though several athletes demonstrated no change or a decrease in expression. The biological mechanisms and functional implications of the increased expression of these circulating miRNA are unclear and require more research, as does their relevance to clinical outcomes.
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Affiliation(s)
- Adrian M Svingos
- a Department of Clinical and Health Psychology , University of Florida , Gainesville , FL , USA
| | - Breton M Asken
- a Department of Clinical and Health Psychology , University of Florida , Gainesville , FL , USA
| | - Russell M Bauer
- a Department of Clinical and Health Psychology , University of Florida , Gainesville , FL , USA
| | - Steven T DeKosky
- b Department of Neurology , University of Florida , Gainesville , FL , USA
| | - Gabrielle A Hromas
- a Department of Clinical and Health Psychology , University of Florida , Gainesville , FL , USA
| | - Michael S Jaffee
- b Department of Neurology , University of Florida , Gainesville , FL , USA
| | - Ronald L Hayes
- c Banyan Labs , Banyan Biomarkers, Inc , Alachua , FL , USA
| | - James R Clugston
- d Department of Community Health and Family Medicine , University of Florida , Gainesville , FL , USA
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Waly AA, El-Ekiaby N, Assal RA, Abdelrahman MM, Hosny KA, El Tayebi HM, Esmat G, Breuhahn K, Abdelaziz AI. Methylation in MIRLET7A3 Gene Induces the Expression of IGF-II and Its mRNA Binding Proteins IGF2BP-2 and 3 in Hepatocellular Carcinoma. Front Physiol 2019; 9:1918. [PMID: 30733684 PMCID: PMC6353855 DOI: 10.3389/fphys.2018.01918] [Citation(s) in RCA: 146] [Impact Index Per Article: 29.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Accepted: 12/20/2018] [Indexed: 01/08/2023] Open
Abstract
miR-let-7a is a tumor suppressor miRNA with reduced expression in most cancers. Methylation of MIRLET7A3 gene was reported to be the cause of this suppression in several cancers; however, it was not explicitly investigated in hepatocellular carcinoma (HCC). We aimed at investigating miR-let-7a expression and molecular mode in HCC, identifying drug-targetable networks, which might be affected by its abundance. Our results illustrated a significant repression of miR-let-7a, which correlated with hypermethylation of its gene of origin MIRLRT7A3. This was further supported by the induction of miR-let-7a expression upon treatment of HCC cells with a DNA-methyltransferase inhibitor. Using a computational approach, insulin-like growth factor (IGF)-II and IGF-2 mRNA binding proteins (IGF2BP)-2/-3 were identified as potential targets for miR-let-7a that was further confirmed experimentally. Indeed, miR-let-7a mimics diminished IGF-II as well as IGF2BP-2/-3 expression. Direct binding of miR-let-7a to each respective transcript was confirmed using a luciferase reporter assay. In conclusion, this study suggests that DNA hypermethylation leads to epigenetic repression of miR-let-7a in HCC cells, which induces the oncogenic IGF-signaling pathway.
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Affiliation(s)
- Amr A Waly
- The Molecular Pathology Research Group, German University in Cairo, Cairo, Egypt
| | | | - Reem A Assal
- The Molecular Pathology Research Group, German University in Cairo, Cairo, Egypt
| | | | - Karim A Hosny
- Department of General Surgery, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Hend M El Tayebi
- The Molecular Pathology Research Group, German University in Cairo, Cairo, Egypt
| | - Gamal Esmat
- Department of Endemic Medicine and Hepatology, Cairo University, Cairo, Egypt
| | - Kai Breuhahn
- Molecular Hepatopathology, Institute of Pathology, University Hospital Heidelberg, Heidelberg, Germany
| | - Ahmed I Abdelaziz
- The Molecular Pathology Research Group, German University in Cairo, Cairo, Egypt.,School of Medicine, Newgiza University, Cairo, Egypt
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Guo M, Zhao X, Yuan X, Jiang J, Li P. MiR-let-7a inhibits cell proliferation, migration, and invasion by down-regulating PKM2 in cervical cancer. Oncotarget 2017; 8:28226-28236. [PMID: 28415668 PMCID: PMC5438645 DOI: 10.18632/oncotarget.15999] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Accepted: 02/28/2017] [Indexed: 12/16/2022] Open
Abstract
In recent decades, miRNA has been reported as a crucial modulator in some biology progressions. This work aims to assess the expression and role of miR-let-7a and pyruvate kinase muscle isozyme M2 (PKM2) in CC tissues and cell lines. Here, we identified that miR-let-7a expression was decreased in CC tissues, and SiHa and HeLa cells (all P < 0.001), however, PKM2 expression was increased in these samples. Statistically, miR-let-7a was inversely associated with PKM2 mRNA or protein (p = 0.013, p = 0.015, respectively). In-vitro assays revealed that ectopic miR-let-7a expression repressed SiHa and HeLa cell proliferation, migration and invasion, and enhanced SiHa and HeLa cell apoptosis. Furthermore, luciferase reporter assays revealed the 3'-UTR of PKM2 was identified a target of miR-let-7a, by which miR-let-7a affected the expression of PKM2 in SiHa and HeLa cells. Besides, PKM2 plasmids partially abrogated the inhibitory effects of miR-let-7a, while si-PKM2 enhanced the inhibitory effects of miR-let-7a. In vivo, miR-let-7a mimics indeed repressed tumor growth in mice xenograft model. In conclusion, our results demonstrated that miR-let-7a inhibits cell proliferation, migration and invasion by down-regulation of PKM2 in cervical cancer. miR-let-7a/PKM2 pathway may be a useful therapeutic target for CC patients.
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Affiliation(s)
- Man Guo
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, P.R. China
| | - Xinying Zhao
- Department of Blood Dialysis, Heilongjiang Agricultural Reclamation Bureau General Hospital, Harbin, Heilongjiang, P.R. China
| | - Xiaolei Yuan
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, P.R. China
| | - Jing Jiang
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, P.R. China
| | - Peiling Li
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, P.R. China
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