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AL-Rawi NH, Rizvi Z, Mkadmi S, Abu Kou R, Elmabrouk N, Alrashdan MS, Koippallil Gopalakrishnan AR. Differential Expression Profile of Salivary oncomiRNAs among Smokeless Tobacco Users. Eur J Dent 2023; 17:1215-1220. [PMID: 36812928 PMCID: PMC10756836 DOI: 10.1055/s-0043-1761191] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023] Open
Abstract
OBJECTIVE The aim of this study was to evaluate the expression of selected salivary oncomiRNAs among smokeless tobacco users and nonsmokers. MATERIALS AND METHODS Twenty-five subjects with chronic smokeless tobacco habit (> 1 year) and 25 nonsmokers were selected for this study. MicroRNA was extracted from saliva samples using the miRNeasy Kit (Qiagen, Hilden, Germany). The forward primers used in the reactions include hsa-miR-21-5p, hsa-miR-146a-3p, hsa-miR-155-3p, and hsa-miR-199a-3p. Relative expression of miRNAs was calculated using the 2-ΔΔCt method. Fold change is calculated by raising 2 to the power of the negative ΔΔCT value. STATISTICAL ANALYSIS Statistical analysis was carried out using GraphPad Prism 5 software. A p-value less than 0.05 was considered statistically significant. RESULTS The four tested miRNAs were found overexpressed in saliva of subjects with smokeless tobacco habit when compared with saliva from nontobacco users. miR-21 expression was 3.74 ± 2.26 folds higher among subjects with smokeless tobacco habit compared to nontobacco users (p < 0.01). The expression for miR-146a (5.56 ± 8.3 folds; p < 0.05), miR-155 (8.06 ± 23.4 folds; p < 0.0001) and miR-199a (14.39 ± 30.3 folds; p < 0.05) was significantly higher among subjects with smokeless tobacco habit. CONCLUSION Smokeless tobacco leads to salivary overexpression of the miRs 21, 146a, 155, and 199a. Monitoring the levels of these four oncomiRs may provide insight about the future development of oral squamous cell carcinoma, especially in patients with smokeless tobacco habits.
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Affiliation(s)
- Natheer H. AL-Rawi
- Department of Oral & Craniofacial Health Sciences, College of Dental Medicine, University of Sharjah, Sharjah, United Arab Emirates
- Sharjah Institute of Medical Research, University of Sharjah, Sharjah, United Arab Emirates
| | - Zuha Rizvi
- Department of Oral & Craniofacial Health Sciences, College of Dental Medicine, University of Sharjah, Sharjah, United Arab Emirates
- Sharjah Institute of Medical Research, University of Sharjah, Sharjah, United Arab Emirates
| | - Sarra Mkadmi
- Department of Oral & Craniofacial Health Sciences, College of Dental Medicine, University of Sharjah, Sharjah, United Arab Emirates
| | - Rawan Abu Kou
- Department of Oral & Craniofacial Health Sciences, College of Dental Medicine, University of Sharjah, Sharjah, United Arab Emirates
| | - Neibal Elmabrouk
- Department of Oral & Craniofacial Health Sciences, College of Dental Medicine, University of Sharjah, Sharjah, United Arab Emirates
| | - Mohammad S. Alrashdan
- Department of Oral & Craniofacial Health Sciences, College of Dental Medicine, University of Sharjah, Sharjah, United Arab Emirates
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2
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Genc S, Yagci T, Vageli DP, Dundar R, Doukas PG, Doukas SG, Tolia M, Chatzakis N, Tsatsakis A, Taghizadehghalehjoughi A. Exosomal MicroRNA-223, MicroRNA-146, and MicroRNA-21 Profiles and Biochemical Changes in Laryngeal Cancer. ACS Pharmacol Transl Sci 2023; 6:820-828. [PMID: 37200807 PMCID: PMC10186621 DOI: 10.1021/acsptsci.3c00038] [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] [Received: 02/23/2023] [Indexed: 05/20/2023]
Abstract
Laryngeal squamous cell carcinoma (LSCC) is one of the most aggressive cancers, and its early diagnosis is urgent. Exosomes are believed to have diagnostic significance in cancer. However, the role of serum exosomal microRNAs, miR-223, miR-146, and miR-21, and phosphatase and tensin homologue (PTEN) and hemoglobin subunit delta (HBD) mRNAs in LSCC is unclear. Exosomes were isolated from the blood serum of 10 LSCC patients and 10 healthy controls to perform scanning electron microscopy and liquid chromatography quadrupole time-of-flight mass spectrometry analyses to characterize them and to undergo reverse transcription polymerase chain reaction to identify miR-223, miR-146, miR-21, and PTEN and HBD mRNA expression phenotypes. Biochemical parameters, including serum C-reactive protein (CRP) and vitamin B12, were also obtained. Serum exosomes of 10-140 nm were isolated from LSCC and controls. Serum exosomal miR-223, miR-146, and PTEN were found to be significantly decreased (p < 0.05), in contrast to serum exosomal miRNA-21 (p < 0.01), and serum vitamin B12 and CRP (p < 0.05) were found to be significantly increased, in LSCC vs controls. Our novel data show that the combination of reduced serum exosomal miR-223, miR-146, and miR-21 profiles and biochemical alterations in CRP and vitamin B12 levels may be useful indicators of LSCC that could be validated by large studies. Our findings also suggest a possible negative regulatory effect of miR-21 on PTEN in LSCC, encouraging a more extensive investigation of its role.
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Affiliation(s)
- Sidika Genc
- Faculty
of Medicine, Department of Medical Pharmacology, Bilecik Seyh Edebali University, Bilecik 11230, Turkey
| | - Tarik Yagci
- Faculty
of Medicine, Department of ENT, Bilecik
Seyh Edebali University, Bilecik 11230, Turkey
| | - Dimitra P. Vageli
- Yale
Larynx Laboratory, Department of Surgery (Otolaryngology), Yale School of Medicine, New Haven, Connecticut 06510, United States
| | - Riza Dundar
- Faculty
of Medicine, Department of ENT, Bilecik
Seyh Edebali University, Bilecik 11230, Turkey
| | - Panagiotis G. Doukas
- Yale
Larynx Laboratory, Department of Surgery (Otolaryngology), Yale School of Medicine, New Haven, Connecticut 06510, United States
| | - Sotirios G. Doukas
- Department
of Internal Medicine, Division of Gastroenterology and Hepatology, Saint Peter University Hospital, New Brunswick New Jersey 08901-1780, United States
- Department
of Forensic Sciences and Toxicology, Faculty of Medicine, University of Crete, 71003 Heraklion, Greece
| | - Maria Tolia
- Department
of Radiology, Faculty of Medicine, University
of Crete, 71003 Heraklion, Greece
| | - Nikolaos Chatzakis
- Otorhinolaryngologist
Consultant, ENT Department of University
Hospital of Crete, 71003 Heraklion, Greece
| | - Aristidis Tsatsakis
- Department
of Forensic Sciences and Toxicology, Faculty of Medicine, University of Crete, 71003 Heraklion, Greece
| | - Ali Taghizadehghalehjoughi
- Faculty
of Medicine, Department of Medical Pharmacology, Bilecik Seyh Edebali University, Bilecik 11230, Turkey
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3
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Sprenkle NT, Serezani CH, Pua HH. MicroRNAs in Macrophages: Regulators of Activation and Function. J Immunol 2023; 210:359-368. [PMID: 36724439 PMCID: PMC10316964 DOI: 10.4049/jimmunol.2200467] [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] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Accepted: 10/13/2022] [Indexed: 02/03/2023]
Abstract
Macrophages are sentinels of the innate immune system that maintain tissue homeostasis and contribute to inflammatory responses. Their broad scope of action depends on both functional heterogeneity and plasticity. Small noncoding RNAs called microRNAs (miRNAs) contribute to macrophage function as post-transcriptional inhibitors of target gene networks. Genetic and pharmacologic studies have uncovered genes regulated by miRNAs that control macrophage cellular programming and macrophage-driven pathology. miRNAs control proinflammatory M1-like activation, immunoregulatory M2-like macrophage activation, and emerging macrophage functions in metabolic disease and innate immune memory. Understanding the gene networks regulated by individual miRNAs enhances our understanding of the spectrum of macrophage function at steady state and during responses to injury or pathogen invasion, with the potential to develop miRNA-based therapies. This review aims to consolidate past and current studies investigating the complexity of the miRNA interactome to provide the reader with a mechanistic view of how miRNAs shape macrophage behavior.
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Affiliation(s)
| | - C Henrique Serezani
- Department of Pathology, Microbiology, and Immunology
- Department of Medicine, Division of Infectious Diseases
- Vanderbilt Center for Immunobiology, Nashville, Tennessee 37232, USA
- Vandebilt Institute of Infection, Immunology and Inflammation; Vanderbilt University Medical Center, Nashville, Tennessee 37232, USA
| | - Heather H Pua
- Department of Pathology, Microbiology, and Immunology
- Vanderbilt Center for Immunobiology, Nashville, Tennessee 37232, USA
- Vandebilt Institute of Infection, Immunology and Inflammation; Vanderbilt University Medical Center, Nashville, Tennessee 37232, USA
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4
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Liu H, Cai X, Liu J, Zhang F, He A, Li R. The MEG3 lncRNA promotes trophoblastic cell growth and invasiveness in preeclampsia by acting as a sponge for miR-21, which regulates BMPR2 levels. Eur J Histochem 2021; 65:3323. [PMID: 34818876 PMCID: PMC8636837 DOI: 10.4081/ejh.2021.3323] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Accepted: 10/19/2021] [Indexed: 12/04/2022] Open
Abstract
Preeclampsia (PE) is one of the leading causes of maternal morbidity and mortality in pregnant women. This study aimed to investigate the potential impact and regulatory mechanisms of bone morphogenetic protein receptor 2 (BMPR2) on the progression of PE. We obtained placental tissues from pregnant women with PE and normal pregnant women, and the results showed that BMPR2 was expressed at low levels in the tissue from PE women. Genetic knockdown of BMPR2 increased the proliferation and invasion of cultured trophoblast cells, whereas its overexpression reduced these characteristics. Bioinformatics analysis and luciferase reporter gene assays confirmed that BMPR2 is a direct target of miR-21. Overexpression of a miR-21 inhibitor promoted the growth and invasiveness of trophoblast cells, whereas the opposite results were observed for the miR-21 mimic. Furthermore, miR-21 was sponged by the lncRNA MEG3, and shRNA inhibition of MEG3 reduced trophoblast cell growth and invasiveness. miR-21 was upregulated in the tissues from PE women, whereas MEG3 was downregulated, and the two were negatively correlated. Collectively, this study demonstrates that the lncRNA MEG3 acts as a sponge for miR-21, which regulates BMPR2 expression and promotes trophoblast cell proliferation and invasiveness, thereby preventing the development of PE. These findings provide novel insight into a targeted therapy that could be used to treat or prevent the development of PE.
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Affiliation(s)
- Huyi Liu
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Jinan University, Guangzhou.
| | - Xiangdao Cai
- Department of Orthodontics, Stomatological Clinic, Zhongshan People's Hospital of Sun Yat-sen University, Zhongshan.
| | - Jia Liu
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Jinan University, Guangzhou.
| | - Fengxiang Zhang
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Jinan University, Guangzhou.
| | - Andong He
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Jinan University, Guangzhou.
| | - Ruiman Li
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Jinan University, Guangzhou.
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5
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Akshaya N, Prasith P, Abinaya B, Ashwin B, Chandran SV, Selvamurugan N. Valproic acid, A Potential Inducer of Osteogenesis in Mouse Mesenchymal Stem Cells. Curr Mol Pharmacol 2020; 14:27-35. [PMID: 32660413 DOI: 10.2174/1874467213666200713102410] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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: 02/03/2020] [Revised: 05/14/2020] [Accepted: 05/18/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Recent reports have unveiled the potential of flavonoids to enhance bone formation and assuage bone resorption due to their involvement in cell signaling pathways. They also act as an effective alternative to circumvent the disadvantages associated with existing treatment methods, which has increased their scope in orthopedic research. Valproic acid (VA, 2-propylpentanoic acid) is one such flavonoid, obtained from an herbaceous plant, used in the treatment of epilepsy and various types of seizures. OBJECTIVE In this study, the role of VA in osteogenesis and the molecular mechanisms underpinning its action in mouse mesenchymal stem cells (mMSCs) were determined. METHODS Results: Cytotoxic studies validated VA's amiable nature in mMSCs. Alizarin red and von Kossa staining results showed an increased deposition of calcium phosphate in VA-treated mMSCs, which confirmed the occurrence of osteoblast differentiation and mineralization at a cellular level. At the molecular level, there were increased levels of expression of Runx2, a vital bone transcription factor, and other major osteoblast differentiation marker genes in the VA-treated mMSCs. Further, VA-treatment in mMSCs upregulated mir-21 and activated the mitogen-activated protein kinase/extracellular signal-regulated kinase signaling pathway, which might be essential for the expression/activity of Runx2. CONCLUSION Thus, the current study confirmed the osteoinductive nature of VA at the cellular and molecular levels, opening the possibility for its application in bone therapeutics with mir-21.
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Affiliation(s)
- Narayanan Akshaya
- Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur 603 203, Tamil Nadu, India
| | - Prakash Prasith
- Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur 603 203, Tamil Nadu, India
| | - Balakrishnan Abinaya
- Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur 603 203, Tamil Nadu, India
| | - Badrinath Ashwin
- Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur 603 203, Tamil Nadu, India
| | - S V Chandran
- Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur 603 203, Tamil Nadu, India
| | - Nagarajan Selvamurugan
- Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur 603 203.Tamil Nadu, India
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6
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Farouk S, Khairy A, Salem AM, Soliman AF, Bader El Din NG. Differential Expression of miR-21, miR-23a, and miR-27a, and Their Diagnostic Significance in Egyptian Colorectal Cancer Patients. Genet Test Mol Biomarkers 2020; 24:825-834. [PMID: 33290159 DOI: 10.1089/gtmb.2020.0184] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [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] [Indexed: 02/06/2023] Open
Abstract
Background: Colorectal cancer (CRC) rates are affected by genetics, ethnicity, and environmental factors; it is considered one of the most aggressive human malignancies with high mortality and morbidity rates worldwide due, in part, to its asymptomatic nature during the early stages of disease. Objective: Owing to the impact of microRNA (miRNA) dysregulation on CRC development and progression, this study was conducted to explore the expression levels of mir-21, -23a, and -27a in the sera and tissues of Egyptian CRC patients and to evaluate their diagnostic efficacy based on circulating levels. Methods: In the test phase, the relative expression levels of the studied miRNAs were evaluated in the sera of 70 participants (35 CRC patients and 35 healthy controls) using quantitative real-time-polymerase chain reaction and to verify their diagnostic value. The exploratory phase was designed to validate the tumor-derived trait by comparing the miRNA levels in the cancerous and adjacent noncancerous tissues. Results: The relative expression levels of the studied miRNAs were significantly upregulated in both serum and tumor tissues of the patients compared to their corresponding controls. In addition, significant positive correlations were found between the relative expression levels of the studied miRNAs in serum samples and their levels in the matched CRC tissues. The serum expression levels of mir-21 and -23a were more predictive of CRC than mir-27a. Conclusion: Circulating mir-21, -23a, and -27a expression levels appear to be valuable diagnostic biomarkers for CRC, especially when combined.
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Affiliation(s)
- Sally Farouk
- Microbial Biotechnology Department, National Research Centre, Giza, Egypt
| | - Ahmed Khairy
- Endemic Medicine Department, Kasr Elainy Hospitals, Cairo University, Giza, Egypt
| | - Ahmed M Salem
- Biochemistry Department, Faculty of Science, Ain Shams University, Cairo, Egypt
| | - Ahmed F Soliman
- Biochemistry Department, Faculty of Science, Ain Shams University, Cairo, Egypt
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7
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Mohammadlou M, Abdollahi M, Hemati M, Baharlou R, Doulabi EM, Pashaei M, Ghahremanfard F, Faranoush M, Kokhaei P. Apoptotic effect of berberine via Bcl-2, ROR1, and mir-21 in patients with B-chronic lymphocytic leukemia. Phytother Res 2020; 35:2025-2033. [PMID: 33174291 DOI: 10.1002/ptr.6945] [Citation(s) in RCA: 8] [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: 07/24/2020] [Revised: 10/26/2020] [Accepted: 10/27/2020] [Indexed: 01/15/2023]
Abstract
Berberine is a natural isoquinoline alkaloid that has been shown to inhibit the proliferation and induce apoptosis in a wide variety of tumor cells. However, the action mechanism of berberine in CLL cells is unknown. The previous study has shown that berberine leads to reduced viability and elevated levels of apoptosis in PBMCs of CLL patients. CLL cells are characterized by remarkable expression of Bcl-2 and ROR1 which leads to activation and survival and increases disease progression in patients. High-level expression of miR-21 in patients with CLL is associated with a higher risk of death. Here we investigated the anticancer effects of berberine upon peripheral blood mononuclear cells (PBMCs) of CLL patients. To evaluate the expression of anti-apoptotic proteins and ROR1 using flow cytometry and western blot, PBMCs were treated with 25 μM of berberine for 24 hr. The expression levels of mir-21 were evaluated by real-time PCR. Examination of treated cells demonstrated that berberine decreased Bcl-2 and ROR1 levels. Although western blot results did not show any change in Bax as a pro-apoptotic protein, an increased Bax/Bcl-2 ratio indicated that mitochondrial pathway is involved in berberine-induced apoptosis of CLL cells. Interestingly, berberine could reduce the expression of miR-21 in comparison to the untreated group. Our findings describe some of the molecular mechanisms of berberine by decreasing Bcl-2, ROR1, and mir-21 which may be considered as a novel apoptosis inducer in CLL cells.
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Affiliation(s)
- Maryam Mohammadlou
- Cancer Research Center, Semnan University of Medical Sciences, Semnan, Iran.,Student Research Committee, Semnan University of Medical Sciences, Semnan, Iran
| | - Maryam Abdollahi
- Cancer Research Center, Semnan University of Medical Sciences, Semnan, Iran.,Student Research Committee, Semnan University of Medical Sciences, Semnan, Iran
| | - Maral Hemati
- Cancer Research Center, Semnan University of Medical Sciences, Semnan, Iran
| | - Rasoul Baharlou
- Cancer Research Center, Semnan University of Medical Sciences, Semnan, Iran
| | - Ehsan Manouchehri Doulabi
- Department of Immunology, Genetics & Pathology, Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Mehrnoosh Pashaei
- Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | | | - Mohammad Faranoush
- Pediatric Growth and Development Research Center, Institute of Endocrinology, Iran University of Medical Sciences, Tehran, Iran
| | - Parviz Kokhaei
- Cancer Research Center, Semnan University of Medical Sciences, Semnan, Iran.,Department of Oncology-Pathology, BioClinicum, Karolinska University Hospital Solna and Karolinska Institutet, Stockholm, Sweden
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8
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Chu NJ, Anders RA, Fertig EJ, Cao M, Hopkins AC, Keenan BP, Popovic A, Armstrong TD, Jaffee EM, Zimmerman JW. Inhibition of miR-21 Regulates Mutant KRAS Effector Pathways and Intercepts Pancreatic Ductal Adenocarcinoma Development. Cancer Prev Res (Phila) 2020; 13:569-582. [PMID: 32409593 PMCID: PMC7372516 DOI: 10.1158/1940-6207.capr-20-0053] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2020] [Revised: 03/24/2020] [Accepted: 04/21/2020] [Indexed: 12/19/2022]
Abstract
Almost all pancreatic ductal adenocarcinomas (PDA) develop following KRAS activation, which triggers epithelial transformation and recruitment of desmoplastic stroma through additional transcriptional and epigenetic regulation, but only a few of these regulatory mechanisms have been described. We profiled dysregulated miRNAs starting with the earliest premalignant pancreatic intraepithelial neoplasias (PanIN) in genetically engineered mutated KRAS and P53 (KPC) mice programmed to recapitulate human PDA tumorigenesis. We identified miR-21 and miR-224 as cell-specific and compartment-specific regulators in PanINs and PDA. miR-21 is overexpressed in tumor epithelial cells of premalignant ducts, while miR-224 is overexpressed in cancer-associated fibroblasts in PDA stroma. Inhibition of miR-21 reverted protumorigenic functionalities to baseline levels. Overexpression of miR-224 induced activated phenotypes in normal fibroblasts. In vivo miR-21 inhibition improved survival in established PDA. Importantly, early systemic miR-21 inhibition completely intercepted premalignant progression. Finally, an evaluation of miR-21 expression in the PDA cohort of The Cancer Genome Atlas identified a correlation between tumor epithelial cell content and miR-21 expression in human tumors providing further rationale for conducting human studies. Thus, miR-21 may be useful for early PanIN detection, and for intercepting developing premalignant pancreatic lesions and other KRAS-driven premalignancies.
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Affiliation(s)
- Nina J Chu
- Department of Oncology, Skip Viragh Center for Pancreas Cancer, Bloomberg Kimmel Institute for Cancer Immunotherapy, and the Sidney Kimmel Cancer Center at Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Robert A Anders
- Department of Oncology, Skip Viragh Center for Pancreas Cancer, Bloomberg Kimmel Institute for Cancer Immunotherapy, and the Sidney Kimmel Cancer Center at Johns Hopkins University School of Medicine, Baltimore, Maryland
- Department of Pathology, The Johns Hopkins Hospital, Baltimore, Maryland
| | - Elana J Fertig
- Department of Oncology, Skip Viragh Center for Pancreas Cancer, Bloomberg Kimmel Institute for Cancer Immunotherapy, and the Sidney Kimmel Cancer Center at Johns Hopkins University School of Medicine, Baltimore, Maryland
- Department of Applied Mathematics and Statistics, Whiting School of Engineering, Johns Hopkins University, Baltimore, Maryland
- Department of Biomedical Engineering, Johns Hopkins School of Medicine, Baltimore, Maryland
| | - Minwei Cao
- Department of Oncology, Skip Viragh Center for Pancreas Cancer, Bloomberg Kimmel Institute for Cancer Immunotherapy, and the Sidney Kimmel Cancer Center at Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Alexander C Hopkins
- Department of Oncology, Skip Viragh Center for Pancreas Cancer, Bloomberg Kimmel Institute for Cancer Immunotherapy, and the Sidney Kimmel Cancer Center at Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Bridget P Keenan
- Department of Oncology, Skip Viragh Center for Pancreas Cancer, Bloomberg Kimmel Institute for Cancer Immunotherapy, and the Sidney Kimmel Cancer Center at Johns Hopkins University School of Medicine, Baltimore, Maryland
- Division of Hematology/Oncology, Department of Medicine, University of California San Francisco, San Francisco, California
| | - Aleksandra Popovic
- Department of Oncology, Skip Viragh Center for Pancreas Cancer, Bloomberg Kimmel Institute for Cancer Immunotherapy, and the Sidney Kimmel Cancer Center at Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Todd D Armstrong
- Department of Oncology, Skip Viragh Center for Pancreas Cancer, Bloomberg Kimmel Institute for Cancer Immunotherapy, and the Sidney Kimmel Cancer Center at Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Elizabeth M Jaffee
- Department of Oncology, Skip Viragh Center for Pancreas Cancer, Bloomberg Kimmel Institute for Cancer Immunotherapy, and the Sidney Kimmel Cancer Center at Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Jacquelyn W Zimmerman
- Department of Oncology, Skip Viragh Center for Pancreas Cancer, Bloomberg Kimmel Institute for Cancer Immunotherapy, and the Sidney Kimmel Cancer Center at Johns Hopkins University School of Medicine, Baltimore, Maryland.
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9
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Chanyshev MD, Yarushkin AA, Koldysheva EV, Lushnikova EL, Gulyaeva LF. Downregulation of Acat1 by miR-21 may participate in liver fibrosis upon chronic DDT exposure. Toxicol Mech Methods 2020; 30:562-569. [PMID: 32508177 DOI: 10.1080/15376516.2020.1777493] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 12/27/2022]
Abstract
The main objective of the present study was to investigate the toxic effect of long-term exposure to DDT (2,2-dichlorodiphenyl-1,1,1-trichloroethane) on rat livers. Female Wistar rats were treated with once-weekly i.p. doses of DDT (10 and 50 mg/kg) for 12 weeks. Histological analysis revealed significant changes in the liver structure, especially at a dose of 50 mg/kg, which consistent with a fibrotic state. Long-term DDT exposure increased micro RNA-21 (miR-21) level and decreased Acetyl-CoA acetyltransferase 1 (Acat1) mRNA and protein levels in a dose-dependent manner. A dual-luciferase reporter assay confirmed the regulation of the rat Acat1 3'-UTR by miR-21. Previous studies have described the involvement of ACAT1 in fibrogenesis; thus, regulation of the Acat1 gene by miR-21 may play a role in DDT exposure-mediated liver fibrosis.
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Affiliation(s)
- Mikhail D Chanyshev
- Laboratory of Molecular Onclogy, Pirogov Russian National Research Medical University, Moscow, Russia.,Federal Research Center of Fundamental and Translational Medicine, Novosibirsk, Russia
| | - Andrey A Yarushkin
- Federal Research Center of Fundamental and Translational Medicine, Novosibirsk, Russia
| | - Elena V Koldysheva
- Institute of Molecular Pathology and Pathomorphology, Federal Research Center of Fundamental and Translational Medicine, Novosibirsk, Russia
| | - Elena L Lushnikova
- Institute of Molecular Pathology and Pathomorphology, Federal Research Center of Fundamental and Translational Medicine, Novosibirsk, Russia
| | - Lyudmila F Gulyaeva
- Federal Research Center of Fundamental and Translational Medicine, Novosibirsk, Russia.,Department of Natural Sciences, Novosibirsk State University, Novosibirsk, Russia
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10
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Strauss FJ, Stähli A, Kobatake R, Tangl S, Heimel P, Apaza Alccayhuaman KA, Schosserer M, Hackl M, Grillari J, Gruber R. miRNA-21 deficiency impairs alveolar socket healing in mice. J Periodontol 2020; 91:1664-1672. [PMID: 32396233 PMCID: PMC7818433 DOI: 10.1002/jper.19-0567] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [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: 10/03/2019] [Revised: 02/25/2020] [Accepted: 03/02/2020] [Indexed: 12/24/2022]
Abstract
BACKGROUND MicroRNAs (miRNAs) are small noncoding RNAs demonstrated as critical post-transcriptional modulators in dental tissues and bone regeneration, particularly miR-21-5p. However, the role of miR-21-5p in the healing of alveolar sockets following tooth extraction remains unknown. In this study we evaluated the influence of miR-21-5p in the healing of alveolar socket after tooth extraction. METHODS Eight miR-21-5p knockout mice and eight littermate controls underwent tooth extraction of the upper right incisor. After a healing period of 14 days microCT and histological analyses were performed. RESULTS MicroCT analysis showed that the percentage of bone in the extraction socket was significantly higher in the control group than in the miR-21 knockout mice; either in the coronal (39.0%, CI 31.8 to 48.0 versus 23.0%, CI 17.8 to 35.2, P = 0.03) or in the middle part of the alveolar socket (56.0%, CI 50.9 to 62.5 versus 43.5% CI 28.6 to 54.6, P = 0.03). These differences were not noted in the apical part of the extraction socket. Histological analysis supported the microCT findings. Newly bone volume per tissue volume (BV/TV) was significantly higher in the control group when compared to miR-21 knockout mice, 27.4% (CI 20.6 to 32.9) versus 19.0% (CI 14.7 to 21.5, P < 0.05), respectively. Surprisingly, no evident signs of buccal bone resorption were observed in both groups. CONCLUSION Despite the limitation of one observation period, these findings suggest that miR-21-5p delays the early healing of alveolar socket following tooth extraction. Whether miR-21-5p is essential for healing of alveolar sockets remains to be elucidated.
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Affiliation(s)
- Franz Josef Strauss
- Department of Oral Biology, Medical University of Vienna, Vienna, Vienna, Austria.,Department of Conservative Dentistry, School of Dentistry, University of Chile, Santiago, Chile.,Clinic of Reconstructive Dentistry, Center of Dental Medicine, University of Zurich, Zurich, Switzerland
| | - Alexandra Stähli
- Department of Periodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - Reiko Kobatake
- Department of Advanced Prosthodontics, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, Hiroshima, Japan
| | - Stefan Tangl
- Karl Donath Laboratory for Hard Tissue and Biomaterial Research, Division of Oral Surgery, School of Dentistry, Medical University of Vienna, Wein, Wein, Austria.,Austrian Cluster for Tissue Regeneration, Medical University of Vienna, Vienna, Austria
| | - Patrick Heimel
- Karl Donath Laboratory for Hard Tissue and Biomaterial Research, Division of Oral Surgery, School of Dentistry, Medical University of Vienna, Wein, Wein, Austria.,Austrian Cluster for Tissue Regeneration, Medical University of Vienna, Vienna, Austria.,Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, Vienna, Austria
| | | | - Markus Schosserer
- Institute of Molecular Biotechnology, University of Natural Resources and Life Sciences, Vienna, Vienna, Austria
| | | | - Johannes Grillari
- Austrian Cluster for Tissue Regeneration, Medical University of Vienna, Vienna, Austria.,Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, Vienna, Austria.,Institute of Molecular Biotechnology, University of Natural Resources and Life Sciences, Vienna, Vienna, Austria
| | - Reinhard Gruber
- Department of Oral Biology, Medical University of Vienna, Vienna, Vienna, Austria.,Department of Periodontology, School of Dental Medicine, University of Bern, Bern, Switzerland.,Austrian Cluster for Tissue Regeneration, Medical University of Vienna, Vienna, Austria
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11
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Abstract
Tropomyosin 1 (TPM1) is a protein that constitutes the sarcomere filaments and is encoded by the TPM1 gene. The aim of the present study is to investigate the correlation between the 3' untranslated region (3'UTR) single nucleotide polymorphisms (SNPs) of the TPM1 gene and dilated cardiomyopathy (DCM).A total of 245 patients with DCM and 245 healthy controls were recruited with 5 ml of venous blood. Genomic DNA was extracted to analyze the TPM1 gene rs12148828, rs11558748, rs707602, rs6738, rs7178040 loci genotypes, and the plasma miR-21 level was analyzed by reverse transcription-PCR (RT-PCR).The risk of DCM development in the rs6738 locus G allele carriers were 1.69 times more than A allele carriers (95% CI: 1.22-2.33, P = .001). Age and gender had no effect on the association of TPM1 gene SNPs with DCM risk (P > .05). The plasma miR-21 level of TPM1 gene rs6738 locus AA carriers was significantly higher than that of the AG and GG genotypes (P < .001).The SNPs of TPM1 gene rs6738 locus is associated with the risk of DCM, which may be related to the abnormal increase of miR-21 level in DCM patients, but further research is needed to prove the causal relationship between miR-21 level and DCM risk.
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Affiliation(s)
- Qiang Yao
- Department of Cardiology, Zhejiang Chinese Medicine and Western Medicine Integrated Hospital/Hangzhou Red Cross Hospital, Hangzhou Zhejiang
| | - Wei Zhang
- Department of Cardiology, Chengwu county people's hospital, Chengwu County, Shandong Province
| | - Tianjie Zhang
- Department of Cardiology, Tongde Hospital of Zhejiang Province, Hangzhou, Zhejiang, China
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12
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Abstract
As a modifiable risk factor for cardiovascular disease, presence of hypertension (HT) necessitates the awareness of asymptomatic organ damage (AOD). The aim of this study was to measure plasma micro RNA-21 (miR-21) and the parameters that reflect AOD such as carotid intima-media thickness (CIMT), microalbuminuria (MAU) in hypertensive patients compared with healthy controls. In addition, the aim of this study was to evaluate plasma miR-21 levels in HT patients with AOD.This study was designed as a cross-sectional observational study. The study includes 2 groups: 32 patients with HT and 32 healthy controls. First, we compared these 2 groups. Then, to underline the relationship between plasma miR-21 and HT, hypertensive patients were divided into 2 groups: with AOD and without AOD.Sixteen patients with HT had AOD. MiR-21 levels significantly correlated with clinical systolic and diastolic blood pressure, MAU, C-reactive protein, and CIMT. CIMT, miR-21, and MAU levels were significantly higher in patients with AOD.Our study showed increased miR-21 levels in HT patients with AOD.
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Affiliation(s)
| | | | | | | | - Serap Yavuzer
- Department of Internal Medicine, Biruni University Faculty of Medicine, İstanbul, Turkey
| | - Mahir Cengiz
- Department of Internal Medicine, Biruni University Faculty of Medicine, İstanbul, Turkey
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13
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Gao C, Zhao D, Wang J, Liu P, Xu B. Clinical significance and correlation of microRNA-21 expression and the neutrophil-lymphocyte ratio in patients with acute myocardial infarction. Clinics (Sao Paulo) 2019; 74:e1237. [PMID: 31721935 PMCID: PMC6820508 DOI: 10.6061/clinics/2019/e1237] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Accepted: 07/17/2019] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVES To explore the clinical significance and correlation of microRNA-21 (miR-21) and the neutrophil-lymphocyte ratio (NLR) in patients with acute myocardial infarction (AMI). METHODS The observation group contained 184 patients, while the control group contained 150 patients. The expression of miR-21 in the serum of each group was detected by qRT-PCR. RESULTS A total of 184 patients and their family members were followed-up for 30 days, among which 35 patients died and 149 patients survived, resulting in a survival rate of 80.97%. According to univariate analysis, there were significant differences in age, cardiac troponin (cTn), heart rate, Killip grade, percutaneous coronary intervention (PCI) operation rate, miR-21 and NLR. In the receiver operating characteristic (ROC) analysis, the area under the curve (AUC) values of miR-21 and NLR for the diagnosis of AMI were 0.909 and 0.868, respectively, and the area under the combined detection curve was 0.960. In the Kaplan-Meier survival analysis, the survival of patients with high miR-21 expression and NLR was significantly higher than that of patients with low miR-21 expression and NLR (p=0.027; p=0.001). The correlation showed that miR-21 expression in serum was positively correlated with the NLR in the observation group (r=0.528, p<0.05). cTn, heart rate, Killip classification, PCI operation rate, miR-21, NLR are independent risk factors for AMI. CONCLUSION miR-21 and NLR play a role in the diagnosis of AMI and can be used as predictors for the survival of AMI.
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Affiliation(s)
- Changkui Gao
- Emergency Department, Daqing Longnan Hospital, Daqing, Heilongjiang, China
- *Corresponding author. E-mail:
| | - Dan Zhao
- Emergency Department, Daqing Longnan Hospital, Daqing, Heilongjiang, China
- *Corresponding author. E-mail:
| | - Jingjing Wang
- Emergency Department, Daqing Longnan Hospital, Daqing, Heilongjiang, China
| | - Ping Liu
- Emergency Department, Daqing Longnan Hospital, Daqing, Heilongjiang, China
| | - Baohe Xu
- Coronary Care Unit, Daqing Longnan Hospital, Daqing, Heilongjiang, China
- *Corresponding author. E-mail:
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14
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Terrigno M, Bertacchi M, Pandolfini L, Baumgart M, Calvello M, Cellerino A, Studer M, Cremisi F. The microRNA miR-21 Is a Mediator of FGF8 Action on Cortical COUP-TFI Translation. Stem Cell Reports 2018; 11:756-769. [PMID: 30174317 PMCID: PMC6135738 DOI: 10.1016/j.stemcr.2018.08.002] [Citation(s) in RCA: 7] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 08/02/2018] [Accepted: 08/02/2018] [Indexed: 02/06/2023] Open
Abstract
The morphogen FGF8 plays a pivotal role in neocortical area patterning through its inhibitory effect on COUP-TFI/Nr2f1 anterior expression, but its mechanism of action is poorly understood. We established an in vitro model of mouse embryonic stem cell corticogenesis in which COUP-TFI protein expression is inhibited by the activation of FGF8 in a time window corresponding to cortical area patterning. Interestingly, overexpression of the COUP-TFI 3'UTR reduces the inhibitory effect of FGF8 on COUP-TFI translation. FGF8 induces the expression of few miRNAs targeting COUP-TFI 3'UTR in silico. We found that the functional inhibition of miR-21 can effectively counteract the inhibitory effect of FGF8 in vitro and regulate COUP-TFI protein levels in vivo. Accordingly, miR-21 expression is complementary to COUP-TFI expression during corticogenesis. These data support a translational control of COUP-TFI gradient expression by FGF8 via miR-21 and contribute to our understanding of how regionalized expression is established during neocortical area mapping.
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Affiliation(s)
- Marco Terrigno
- Scuola Normale Superiore, Piazza dei Cavalieri, 7, Pisa 56126, Italy
| | | | - Luca Pandolfini
- Scuola Normale Superiore, Piazza dei Cavalieri, 7, Pisa 56126, Italy
| | - Mario Baumgart
- Leibniz Institute on Aging - Fritz Lipmann Institute (FLI), Beutenbergstraße 11, 07745 Jena, Germany
| | | | - Alessandro Cellerino
- Scuola Normale Superiore, Piazza dei Cavalieri, 7, Pisa 56126, Italy; Leibniz Institute on Aging - Fritz Lipmann Institute (FLI), Beutenbergstraße 11, 07745 Jena, Germany
| | - Michèle Studer
- Université Côte d'Azur (UCA), CNRS, Inserm, iBV, 06108 Nice, France
| | - Federico Cremisi
- Scuola Normale Superiore, Piazza dei Cavalieri, 7, Pisa 56126, Italy; Istituto di Biofisica CNR, Via Moruzzi 1, 56124 Pisa, Italy.
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15
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Chen Y, Chen S, Zhang J, Wang Y, Jia Z, Zhang X, Han X, Guo X, Sun X, Shao C, Wang J, Lan T. Expression profile of microRNAs in expressed prostatic secretion of healthy men and patients with IIIA chronic prostatitis/chronic pelvic pain syndrome. Oncotarget 2018; 9:12186-12200. [PMID: 29552302 PMCID: PMC5844738 DOI: 10.18632/oncotarget.24069] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [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: 08/23/2017] [Accepted: 11/26/2017] [Indexed: 01/18/2023] Open
Abstract
The current study aimed to identify a comprehensive expression-profile of microRNAs (miRNAs) in expressed prostatic secretion (EPS) collected from healthy men and patients with CP/CPPS (Chronic prostatitis/Chronic pelvic pain syndrome). After clinical screening of 382 participants, 60 healthy men and 59 IIIA CP/CPPS patients with significant pelvic-pain were included into this study from March 2012 to December 2014. High-throughput sequencing was employed to identify characteristic expression-profile of EPS-miRNAs. QRT-PCR was further performed to confirm elevated levels of differential EPS-miRNAs. Finally, candidate EPS-miRNAs were measured traceably in 21 follow-up patients and their classify-accuracy on IIIA CP/CPPS were analyzed by ROC (receiver operating characteristic) curve. In discovery-phage, 41 and 43 predominant EPS-miRNAs were found in pooled EPS-sample from 40 healthy men and 39 IIIA CP/CPPS patients, respectively. Furthermore, 22 abundant EPS-miRNAs were up-regulated with ≥ 2-fold in 20 patients compared to 20 healthy men. In testing-phage, elevated levels of miR-21-5p, miR-30a-5p, miR-30d-5p, miR-103a-3p and miR-141-3p were further confirmed in 33 patients by comparing to 30 healthy men. In validation-phage, relieved pelvic-pain symptom of 21 follow-up patients was found to be accompanied by significant down-regulation of miR-21-5p, miR-103a-3p and miR-141-3p. Particularly, ROC curve analysis indicated the highest area under ROC curve (AUC) was found for miR-21-5p (0.891), followed in order by miR-141-3p and miR-103a-3p. Our studies provided evidence that secretory miRNAs existed in EPS and dysregulated EPS-miRNAs were associated with prostatitis. In particular, miR-21-5p possessed a high classify-accuracy for IIIA CP/CPPS patients with significant pelvic pain.
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Affiliation(s)
- Ye Chen
- Department of Anesthesiology and Pain, Lanzhou General Hospital of Lanzhou Command, Lanzhou, China
| | - SuNing Chen
- Department of Pharmacy, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Jian Zhang
- Department of Biochemistry and Molecular Biology and the State Key Laboratory of Cancer Biology, The Fourth Military Medical University, Xi'an, China
| | - YangMin Wang
- Department of Urology, Lanzhou General Hospital of Lanzhou Command, Lanzhou, China
| | - Zhengping Jia
- Key Laboratory of the Plateau of the Environmental Damage Control, Lanzhou General Hospital of Lanzhou Military Command, Lanzhou, China
| | - Xin Zhang
- Department of Urology, Lanzhou General Hospital of Lanzhou Command, Lanzhou, China
| | - Xiao Han
- Department of Urology, Lanzhou General Hospital of Lanzhou Command, Lanzhou, China
| | - Xiuquan Guo
- Department of Urology, Lanzhou General Hospital of Lanzhou Command, Lanzhou, China
| | - XiaoDi Sun
- Department of Urology, Lanzhou General Hospital of Lanzhou Command, Lanzhou, China
| | - Chen Shao
- Department of Urology, Xiang'an Hospital, University of XiaMen, Xiamen, China
| | - Ji Wang
- Laboratory of Cell Death and Cancer Genetics, The University of Minnesota Hormel Institute, Austin, MN, United States
| | - Tian Lan
- Department of Urology, Lanzhou General Hospital of Lanzhou Command, Lanzhou, China.,Department of Urology, Xiang'an Hospital, University of XiaMen, Xiamen, China
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16
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Song J, Shao Q, Li C, Liu H, Li J, Wang Y, Song W, Li L, Wang G, Shao Z, Fu R. Effects of microRNA-21 on apoptosis by regulating the expression of PTEN in diffuse large B-cell lymphoma. Medicine (Baltimore) 2017; 96:e7952. [PMID: 28953617 PMCID: PMC5626260 DOI: 10.1097/md.0000000000007952] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Diffuse large B-cell lymphoma (DLBCL) is an aggressive malignancy and the most common subtype of non-Hodgkin lymphoma in China. However, many cases still remain biologically and clinically heterogeneous, indicating that the DLBCL mechanism remains unclear. MicroRNAs (miRNAs) are critically responsible for lymphomagenesis. We found that plasma miR-21 level was significantly higher in B-cell lymphoma. However, the exact contribution of miR-21 in DLBCL remains unknown.To determine the function and mechanism of miR-21 in DLBCL, miR-21 and phosphatase and tensin homolog (PTEN) expressions were examined through real-time PCR and immunohistochemical methods. Moreover, the effects of antisense oligonucleotide (ASO) targeting miR-21 (ASO-21) were observed in DLCBL cell line.MiR-21 expressions in cell line and tissues of patients were significantly higher than those in normal controls, which were inversely correlated with PTEN expression. MiR-21 expression was significantly higher in stage III/IV patients than in stage I/II patients. PTEN protein was expressed positively in only 6 patients with DLBCL (6/26). MiR-21 expression level in the PTEN-negative group was 11.73 (2.13-64.29), which was significantly higher than that in the PTEN-positive group (1.04, 0.67-15.15; P = .038). After down-regulating the miR-21 expression, apoptosis of DLBCL cells increased and PTEN protein was up-regulated in ASO-21-treated cells compared with SCO-21-treated cells by western blot.These results suggested that miR-21 affects apoptosis of lymphoma cells by regulating the expression of PTEN in DLBCL, which may be associated with increased poor prognosis for DLBCL patients and represents a useful approach for DLBCL treatment.
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Affiliation(s)
| | | | | | | | | | | | - Wenjing Song
- Department of Pathology, Tianjin Medical University General Hospital, Tianjin, China
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17
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Li S, Liu W, Lei Y, Long J. Regulatory effects of electronic beam irradiation on mir-21/smad7-mediated collagen I synthesis in keloid-derived fibroblasts. Biol Open 2016; 5:1567-1574. [PMID: 27694104 PMCID: PMC5155526 DOI: 10.1242/bio.018770] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [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] [Indexed: 12/29/2022] Open
Abstract
Keloid scarring is an abnormal pathological scar characterized by excessive fibro proliferation and extracellular matrix deposition. Electronic beam irradiation is commonly used with surgical removal to control high recurrence rates of keloid scarring; however, the mechanism remains unknown. In this study, we used keloid-derived primary fibroblasts (KF) as the cell model, and a dose of 15 Gy energy, followed by quantitative PCR (qPCR), western blotting and gene overexpression/knock down techniques were used to reveal the molecular mechanisms affected by electronic beam irradiation. We found that mir-21 was highly expressed in KF and was downregulated by irradiation. We also showed that smad7 was a direct target of mir-21. Moreover, the expression level of smad7 was low in KF and upregulated by irradiation. We also found that smad7 controls Col-1 synthesis by mediating p38 phosphorylation, and this process was affected by electronic beam irradiation. The regulatory effect of electronic beam irradiation on the expression of mir-21, smad7, p38, p-p38 and Col-1 could be partly restored by mir-21 overexpression achieved by mir-21 mimic transfection. In conclusion, our data demonstrated that mir-21/smad7 regulated Col-1 expression in KF and that electronic beam irradiation was capable of decreasing Col-1 production by modifying mir-21/smad7-mediated p38 activation. This is the first report identifying the effects of electronic beam irradiation on miRNAs, providing a novel strategy to discover the molecular mechanisms of radiotherapy. Summary: Using primary keloid-derived fibroblasts, we demonstrate that electronic beam irradiation inhibits the recurrence of keloid scarring by suppressing collagen I expression via mir-21/smad7-mediated p38 activation.
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Affiliation(s)
- Shifeng Li
- Department of Plastic and Aesthetic Surgery, Xiangya Hospital of Central South University, Changsha City, Hunan Province 410008, China.,Department of Plastic and Cosmetic Surgery, The first people's hospital of Chenzhou, Chenzhou City, Hunan Province 423000, China
| | - Wei Liu
- Department of Pathology, The Affiliated Cancer Hospital of Xiangya Medical School, Changsha City, Hunan Province 410013, China
| | - Ying Lei
- Department of Plastic and Cosmetic Surgery, The people's hospital of Hunan province, Changsha City, Hunan Province 410000, China
| | - Jianhong Long
- Department of Plastic and Aesthetic Surgery, Xiangya Hospital of Central South University, Changsha City, Hunan Province 410008, China
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18
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Li C, Sun J, Xiang Q, Liang Y, Zhao N, Zhang Z, Liu Q, Cui Y. Prognostic role of microRNA-21 expression in gliomas: a meta-analysis. J Neurooncol 2016; 130:11-17. [PMID: 27531352 DOI: 10.1007/s11060-016-2233-7] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [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: 03/10/2016] [Accepted: 08/03/2016] [Indexed: 01/04/2023]
Abstract
MicroRNA-21 (miRNA-21) has recently been shown to be a promising prognostic tumor biomarker. However, few studies have not supported this idea and have shown inconsistent data. Thus, we conducted a meta-analysis to elucidate the predictive value of miRNA-21 in gliomas. The relevant studies were identified by performing online search in PubMed, EMBASE and Web of Science databases up to Apr 2016. This meta-analysis study included seven eligible studies, consisting of 1121 gliomas and 533 glioblastoma multiforme (GBM) patients. Heterogeneity between studies was assessed using Egger's and Begg's test. Hazard ratios (HRs) with 95 % confidence intervals (CIs) for overall survival (OS), which compared the expression levels of miRNA-21 in patients with gliomas, were extracted and estimated. Our analysis revealed that the high expression of miRNA-21 is associated with the worse OS in gliomas. Further subgroup analysis indicated that increased expression of miRNA-21 was also associated with OS in GBM patients. Moreover, we observed a correlation between miRNA-21 expression and the World Health Organization defined gliomas grading system (WHO grade). Besides, high miRNA-21 expression was significantly correlated with lowered OS both in the Asian group and non-Asian group. In the cut-off subgroup analysis, both mean cut off value and median cut off value were significantly associated with OS. The expression level of miRNA-21 was not high in low KPS (Karnofsky score) group. miRNA-21 appears to be a promising biomarker for predicting the progression of patients with gliomas or GBM. However, due to the limited sample size, further prospective or retrospective multi-center well designed studies with adequate sample size should be conducted to verify its definite prognostic value.
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Affiliation(s)
- Chao Li
- Department of Pharmacy, Base for Clinical Trial, Peking University First Hospital, Beijing, 100034, People's Republic of China
| | - Jianjun Sun
- Department of Pharmacy, Base for Clinical Trial, Peking University First Hospital, Beijing, 100034, People's Republic of China
| | - Qian Xiang
- Department of Pharmacy, Base for Clinical Trial, Peking University First Hospital, Beijing, 100034, People's Republic of China
| | - Yan Liang
- Department of Pharmacy, Base for Clinical Trial, Peking University First Hospital, Beijing, 100034, People's Republic of China
| | - Nan Zhao
- Department of Pharmacy, Base for Clinical Trial, Peking University First Hospital, Beijing, 100034, People's Republic of China
| | - Zhuo Zhang
- Department of Pharmacy, Base for Clinical Trial, Peking University First Hospital, Beijing, 100034, People's Republic of China
| | - Qianxin Liu
- Department of Pharmacy, Base for Clinical Trial, Peking University First Hospital, Beijing, 100034, People's Republic of China
| | - Yimin Cui
- Department of Pharmacy, Base for Clinical Trial, Peking University First Hospital, Beijing, 100034, People's Republic of China.
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19
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Abhari A, Zarghami N, Farzadi L, Nouri M, Shahnazi V. Altered of microRNA expression level in oligospermic patients. Iran J Reprod Med 2014; 12:681-6. [PMID: 25469126 PMCID: PMC4248154] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2013] [Accepted: 06/15/2014] [Indexed: 12/02/2022]
Abstract
BACKGROUND MicroRNA (miRNA) is small endogenous, single strand RNA molecules that regulate gene expression at post-transcriptional level through several mechanisms to affect key cellular event including male germ cells differentiation, proliferation, development and apoptosis. Mutation and/or aberrant expression of miRNAs have been associated with progression of various disorders, including infertility. OBJECTIVE The purpose of this research was to study the estrogen receptor beta (ERβ(, hsa-mir-21 and, hsa-mir-22 expression level in oligospermic infertile and control fertile men and correlation between them. MATERIALS AND METHODS In this study, the change in mir-21, mir-22 expression and their common target gene (ERβ) expression levels were evaluated in oligospermic infertile men (n= 43) compared with 43 age matched healthy control by Real-Time PCR methods. RESULTS Expression analysis by qRT-PCR test on miRNA have identified that mir-21, mir-22 levels were significantly higher than those in normal controls (p<0.0001) and ERβ expression level significantly decreased in comparison with the normal group (p<0.0001). CONCLUSION Our study showed that mir-21 and mir-22 are indirectly involved in spermatogenesis by regulating of the estrogen receptor and might have a diagnostic and prognostic value in men infertility.
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Affiliation(s)
- Alireza Abhari
- Department. of Biochemistry and Clinical Laboratories, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Nosratollah Zarghami
- Department. of Biochemistry and Clinical Laboratories, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Laya Farzadi
- Department. of Biochemistry and Clinical Laboratories, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Mohammad Nouri
- Women’s Reproductive Health Research Center, Al-zahra Hospital, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Vahideh Shahnazi
- Women’s Reproductive Health Research Center, Al-zahra Hospital, Tabriz University of Medical Sciences, Tabriz, Iran.
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20
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Que R, Ding G, Chen J, Cao L. Analysis of serum exosomal microRNAs and clinicopathologic features of patients with pancreatic adenocarcinoma. World J Surg Oncol 2013; 11:219. [PMID: 24007214 PMCID: PMC3766671 DOI: 10.1186/1477-7819-11-219] [Citation(s) in RCA: 198] [Impact Index Per Article: 18.0] [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: 06/04/2013] [Accepted: 08/25/2013] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Altered expression of serum microRNAs (miRNAs) have been reported to correlate with carcinogenesis and progression of pancreatic adenocarcinoma (PC), but descriptions of serum exosomal miRNAs in PC are still lacking. This study was designed to evaluate serum exosomal miRNA levels in PC patients and to investigate their relationships with clinicopathologic features and prognosis. METHODS Four miRNAs (miR-17-5p, miR-21, miR-155 and miR-196a) related to PC were selected for examination in our research. Serum miRNA was examined by RT-PCR in a group of 49 patients, including 22 with PCs, 6 with benign pancreatic tumors, 7 with ampullary carcinomas, 6 with chronic pancreatitis and 8 healthy participants. The clinicopathologic data were also collected, and PC patients were classified according to the presence of metastasis, tumor differentiation and advanced stage. RESULTS There were low expressions of exosomal miR-155 and miR-196a in serum samples of PC patients when U-6 was used as a control. Serum exosomal miR-17-5p was higher in PC patients than in non-PC patients and healthy participants. High levels of miR-17-5p were significantly correlated with metastasis and advanced stage of PC. The serum exosomal miR-21 level in PC was higher than that in the normal and chronic pancreatitis groups, but was not significantly correlated with PC differentiation and tumor stage. CONCLUSIONS There were high expressions of serum exosomal miR-17-5p and miR-21 in PC patients. Examination of serum exosomal microRNA is a useful serum biomarker for PC diagnosis other than serum-free microRNA. It is postulated that exosomal miR-17-5p participates in the progression of PC.
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Affiliation(s)
- Risheng Que
- Department of General Surgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, China
| | - Guoping Ding
- Department of General Surgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, China
| | - Jionghuang Chen
- Department of General Surgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, China
| | - Liping Cao
- Department of General Surgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, China
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21
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Abstract
There is a strong connection between inflammation, altered microRNA (miRNA) expression and colon cancer. Longstanding inflammatory bowel diseases-related colitis leads to increased risk for the development of colorectal cancer (CRC), while sporadic CRC is in part driven by the inflammatory microenvironment. This supports a causative role for inflammation in colon carcinogenesis. miRNAs are a class of small noncoding RNAs that have recently emerged as key players in both inflammation and cancer. Some miRNAs act as inflammatory mediators, others can act as either oncogenes or tumor suppressors depending on the cellular environment in which they are expressed. In particular, miR-21 is an oncogenic miRNA that has been implicated as an inflammatory mediator and may promote inflammation-associated colon carcinogenesis. miRNAs have potential as biomarkers and therapeutic targets in CRC. They are currently being evaluated as early detection biomarkers and prognostic classifiers. Polymorphisms in miRNAs and miRNA-binding sites may alter one's risk of CRC. This review will focus on the role of inflammation and miRNAs in colon carcinogenesis and discuss the potential for miRNAs and inflammatory genes to be used as biomarkers and therapeutic targets of CRC.
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Affiliation(s)
- Hirokazu Okayama
- Laboratory of Human Carcinogenesis, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
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22
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Zhu L, Yan W, Rodriguez-Canales J, Rosenberg AM, Hu N, Goldstein AM, Taylor PR, Erickson HS, Emmert-Buck MR, Tangrea MA. MicroRNA analysis of microdissected normal squamous esophageal epithelium and tumor cells. Am J Cancer Res 2011; 1:574-584. [PMID: 21796275 PMCID: PMC3142940] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2011] [Accepted: 04/10/2011] [Indexed: 05/31/2023] Open
Abstract
Previous studies have identified several dysregulated microRNAs in esophageal squamous cell carcinoma (ESCC); however, to date there are no ex vivo analyses comparing expression levels of these regulatory molecules in esophageal squamous cell tumors versus patient-matched normal epithelium. We describe here a technical strategy to evaluate microRNAs in normal esophageal basal cells (NB), normal esophageal differentiated cells (ND), and tumor cells (T). Laser capture microdissection was used to procure target populations from five cases and 18 ESCC-associated microRNAs were measured by RT-qPCR. Five microRNAs (miR-25, miR-106b, miR-21, miR-203, and miR-145) demonstrated consistent differential expression in at least one of the three comparisons: T vs. NB, T vs. ND, or NB vs. ND. The potential regulatory role of the microRNAs in ESCC was further evaluated by correlating their expression with a matched mRNA dataset, which included the same five cases and cell populations. In conclusion, the present work demonstrates the feasibility of studying microRNA levels in precisely dissected cell populations from clinical samples, and sheds light on the molecular mechanisms associated with ESCC.
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Affiliation(s)
- Liang Zhu
- Pathogenetics Unit, Laboratory of Pathology, Center for Cancer Research, Bethesda, MD, USA
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Castro RE, Ferreira DMS, Zhang X, Borralho PM, Sarver AL, Zeng Y, Steer CJ, Kren BT, Rodrigues CMP. Identification of microRNAs during rat liver regeneration after partial hepatectomy and modulation by ursodeoxycholic acid. Am J Physiol Gastrointest Liver Physiol 2010; 299:G887-97. [PMID: 20689055 PMCID: PMC2957332 DOI: 10.1152/ajpgi.00216.2010] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
New gene regulation study tools such as microRNA (miRNA or miR) analysis may provide unique insights into the remarkable ability of the liver to regenerate. In addition, we have previously shown that ursodeoxycholic acid (UDCA) modulates mRNA levels during liver regeneration. Bile acids are also homeotrophic sensors of functional hepatic capacity. The present study was designed to determine whether miRNAs are modulated in rats following 70% partial hepatectomy (PH) and elucidate the role of UDCA in regulating miRNA expression during liver regeneration (LR). Total RNA was isolated from livers harvested at 3-72 h following 70% PH or sham operations, from both 0.4% (wt/wt) UDCA and control diet-fed animals. By using a custom microarray platform we found that several miRNAs are significantly altered after PH by >1.5-fold, including some previously described as modulators of cell proliferation, differentiation, and death. In particular, expression of miR-21 was increased after PH. Functional modulation of miR-21 in primary rat hepatocytes increased cell proliferation and viability. Importantly, UDCA was a strong inducer of miR-21 both during LR and in cultured HepG2 cells. In fact, UDCA feeding appeared to induce a sustained increase of proliferative miRNAs observed at early time points after PH. In conclusion, miRNAs, in particular miR-21, may play a significant role in modulating proliferation and cell cycle progression genes after PH. miR-21 is additionally induced by UDCA in both regenerating rat liver and in vitro, which may represent a new mechanism behind UDCA biological functions.
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Affiliation(s)
- Rui E. Castro
- 1Research Institute for Medicines and Pharmaceutical Sciences, Faculty of Pharmacy, University of Lisbon, Lisbon, Portugal; ,2Department of Medicine and
| | - Duarte M. S. Ferreira
- 1Research Institute for Medicines and Pharmaceutical Sciences, Faculty of Pharmacy, University of Lisbon, Lisbon, Portugal;
| | - Xiaoxiao Zhang
- 3Department of Pharmacology, University of Minnesota Medical School,
| | - Pedro M. Borralho
- 1Research Institute for Medicines and Pharmaceutical Sciences, Faculty of Pharmacy, University of Lisbon, Lisbon, Portugal;
| | - Aaron L. Sarver
- 4Biostatistics and Informatics, Masonic Cancer Center, University of Minnesota, and
| | - Yan Zeng
- 3Department of Pharmacology, University of Minnesota Medical School,
| | - Clifford J. Steer
- 2Department of Medicine and ,5Department of Genetics, Cell Biology, and Development, University of Minnesota Medical School, Minneapolis, Minnesota
| | | | - Cecília M. P. Rodrigues
- 1Research Institute for Medicines and Pharmaceutical Sciences, Faculty of Pharmacy, University of Lisbon, Lisbon, Portugal;
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Klinge CM, Riggs KA, Wickramasinghe NS, Emberts CG, McConda DB, Barry PN, Magnusen JE. Estrogen receptor alpha 46 is reduced in tamoxifen resistant breast cancer cells and re-expression inhibits cell proliferation and estrogen receptor alpha 66-regulated target gene transcription. Mol Cell Endocrinol 2010; 323:268-76. [PMID: 20302909 PMCID: PMC2875375 DOI: 10.1016/j.mce.2010.03.013] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2010] [Revised: 03/02/2010] [Accepted: 03/10/2010] [Indexed: 12/11/2022]
Abstract
Resistance to endocrine therapy is a major clinical problem in breast cancer. The role of ERalpha splice variants in endocrine resistance is largely unknown. We observed reduced protein expression of an N-terminally truncated ERalpha46 in endocrine-resistant LCC2, LCC9, and LY2 compared to MCF-7 breast cancer cells. Transfection of LCC9 and LY2 cells with hERalpha46 partially restored growth inhibition by TAM. Overexpression of hERalpha46 in MCF-7 cells reduced estradiol (E(2))-stimulated endogenous pS2, cyclin D1, nuclear respiratory factor-1 (NRF-1), and progesterone receptor transcription. Expression of oncomiR miR-21 was lower in TAM-resistant LCC9 and LY2 cells compared to MCF-7 cells. Transfection with ERalpha46 altered the pharmacology of E(2) regulation of miR-21 expression from inhibition to stimulation, consistent with the hypothesis that hERalpha46 inhibits ERalpha activity. Established miR-21 targets PTEN and PDCD4 were reduced in ERalpha46-transfected, E(2)-treated MCF-7 cells. In conclusion, ERalpha46 appears to enhance endocrine responses by inhibiting selected ERalpha66 responses.
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Affiliation(s)
- Carolyn M Klinge
- Department of Biochemistry & Molecular Biology, Center for Genetics and Molecular Medicine, University of Louisville School of Medicine, Louisville, KY 40292, USA.
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Ryu JK, Hong SM, Karikari CA, Hruban RH, Goggins MG, Maitra A. Aberrant MicroRNA-155 expression is an early event in the multistep progression of pancreatic adenocarcinoma. Pancreatology 2010; 10:66-73. [PMID: 20332664 PMCID: PMC2865485 DOI: 10.1159/000231984] [Citation(s) in RCA: 105] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2009] [Accepted: 07/14/2009] [Indexed: 12/11/2022]
Abstract
BACKGROUND/AIMS Pancreatic intraepithelial neoplasia (PanIN) is the most common noninvasive precursor to invasive pancreatic adenocarcinoma. Misexpression of microRNAs (miRNAs) is commonly encountered in invasive neoplasia; however, miRNA abnormalities in PanIN lesions have not been documented. METHODS Three candidate miRNAs (miR-21, miR-155, and miR-221) previously reported as overexpressed in pancreatic cancers were assessed in 31 microdissected PanINs (14 PanIN-1, 9 PanIN-2, 8 PanIN-3) using quantitative reverse transcription PCR (qRT-PCR). Subsequently, miR-155 was evaluated by locked nucleic acid in situ hybridization (LNA-ISH) in PanIN tissue microarrays. RESULTS Relative to microdissected non-neoplastic ductal epithelium, significant overexpression of miR-155 was observed in both PanIN-2 (2.6-fold, p = 0.02) and in PanIN-3 (7.4-fold, p = 0.014), while borderline significant overexpression of miR-21 (2.5-fold, p = 0.049) was observed in PanIN-3 only. In contrast, no significant differences in miR-221 levels were observed between ductal epithelium and PanIN lesions by qRT-PCR. LNA-ISH confirmed the aberrant expression of miR-155 in PanIN-2 (9 of 20, 45%) and in PanIN-3 (8 of 13, 62%), respectively, when compared with normal ductal epithelium (0 of 10) (p < 0.01). CONCLUSIONS Abnormalities of miRNA expression are observed in the multistep progression of pancreatic cancer, with miR-155 aberrations demonstrable at the stage of PanIN-2, and miR-21 abnormalities at the stage of PanIN-3 lesions. and IAP.
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Affiliation(s)
- Ji Kon Ryu
- Department of Pathology, Sol Goldman Pancreatic Cancer Research Center, Johns Hopkins University School of Medicine, Baltimore, Md., USA,Department of Internal Medicine, Seoul National University School of Medicine, Seoul, Korea
| | - Seung-Mo Hong
- Department of Pathology, Sol Goldman Pancreatic Cancer Research Center, Johns Hopkins University School of Medicine, Baltimore, Md., USA,*Seung-Mo Hong, MD, Department of Pathology, Sol Goldman Pancreatic Cancer Research Center, Room 316, CRB II, 1550 Orleans Street, Baltimore, MD 21231 (USA), Tel. +1 410 955 3511, Fax +1 410 614 0671, E-Mail
| | - Collins A. Karikari
- Department of Pathology, Sol Goldman Pancreatic Cancer Research Center, Johns Hopkins University School of Medicine, Baltimore, Md., USA
| | - Ralph H. Hruban
- Department of Pathology, Sol Goldman Pancreatic Cancer Research Center, Johns Hopkins University School of Medicine, Baltimore, Md., USA,Department of Oncology, Sol Goldman Pancreatic Cancer Research Center, Johns Hopkins University School of Medicine, Baltimore, Md., USA
| | - Michael G. Goggins
- Department of Pathology, Sol Goldman Pancreatic Cancer Research Center, Johns Hopkins University School of Medicine, Baltimore, Md., USA,Department of Oncology, Sol Goldman Pancreatic Cancer Research Center, Johns Hopkins University School of Medicine, Baltimore, Md., USA,Department of Medicine, Sol Goldman Pancreatic Cancer Research Center, Johns Hopkins University School of Medicine, Baltimore, Md., USA
| | - Anirban Maitra
- Department of Pathology, Sol Goldman Pancreatic Cancer Research Center, Johns Hopkins University School of Medicine, Baltimore, Md., USA,Department of Oncology, Sol Goldman Pancreatic Cancer Research Center, Johns Hopkins University School of Medicine, Baltimore, Md., USA,McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, Md., USA
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Dillhoff M, Liu J, Frankel W, Croce C, Bloomston M. MicroRNA-21 is overexpressed in pancreatic cancer and a potential predictor of survival. J Gastrointest Surg 2008; 12:2171-6. [PMID: 18642050 PMCID: PMC4055565 DOI: 10.1007/s11605-008-0584-x] [Citation(s) in RCA: 337] [Impact Index Per Article: 21.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2008] [Accepted: 06/16/2008] [Indexed: 01/31/2023]
Abstract
BACKGROUND MicroRNAs are small (18-22 nucleotides) noncoding RNAs involved in posttranscriptional modification of many target genes. One of these, microRNA-21 (miR-21), has been shown to play a role in multiple hematologic and solid organ malignancies. We sought to determine the expression pattern of miR-21 in pancreatic cancers and its impact on clinicopathologic characteristics. METHODS Eighty resected pancreatic cancer specimens were microdissected and tissue microarrays (TMA) created in duplicate. TMAs were also created for benign pancreas (N = 12) and chronic pancreatitis (N = 45). In situ hybridization (ISH) was undertaken utilizing locked nucleic acid probes for miR-21. RNA U6 and scrambled RNA served as positive and negative control, respectively. ISH was scored as 0 (absent), 1+ (faint/focal expression), or 2+ (strong expression). Kaplan-Meier survival curves were constructed and compared by log-rank analysis. RESULTS MiR-21 expression was demonstrated in 63 (79%) pancreatic cancers (1+ in 49, 2+ in 14) compared to one of 12 (8%, p < 0.0001) benign pancreas and 12/45 (27%, p < 0.0001) chronic pancreatitis. None of the benign tissues demonstrated strong miR-21 expression. Although miR-21 expression did not correlate with tumor size, differentiation, nodal status, or T stage, strong miR-21 expression was predictive of poorer outcome compared to absent or faint/focal miR-21 expression in patients with node-negative disease (median 27.7 months vs. 15.2, p = 0.037). Nodal status was also predictive of survival (p = 0.029). CONCLUSIONS MicroRNA-21 is significantly overexpressed in pancreatic cancers as detected by in situ hybridization. Its strong expression predicts limited survival in patients with node-negative disease and may be an important biologic marker for outcome.
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Affiliation(s)
- Mary Dillhoff
- Department of Surgery, The Ohio State University, 410 W. 10th Ave., N924 Doan Hall, Columbus, OH 43210, USA
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Yan LX, Huang XF, Shao Q, Huang MY, Deng L, Wu QL, Zeng YX, Shao JY. MicroRNA miR-21 overexpression in human breast cancer is associated with advanced clinical stage, lymph node metastasis and patient poor prognosis. RNA 2008; 14:2348-60. [PMID: 18812439 PMCID: PMC2578865 DOI: 10.1261/rna.1034808] [Citation(s) in RCA: 868] [Impact Index Per Article: 54.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2008] [Accepted: 07/29/2008] [Indexed: 05/22/2023]
Abstract
To investigate the global expression profile of miRNAs in primary breast cancer (BC) and normal adjacent tumor tissues (NATs) and its potential relevance to clinicopathological characteristics and patient survival, the genome-wide expression profiling of miRNAs in BC was investigated using a microarray containing 435 mature human miRNA oligonucleotide probes. Nine miRNAs of hsa-miR-21, hsa-miR-365, hsa-miR-181b, hsa-let-7f, hsa-miR-155, hsa-miR-29b, hsa-miR-181d, hsa-miR-98, and hsa-miR-29c were observed to be up-regulated greater than twofold in BC compared with NAT, whereas seven miRNAs of hsa-miR-497, hsa-miR-31, hsa-miR-355, hsa-miR-320, rno-mir-140, hsa-miR-127 and hsa-miR-30a-3p were observed to be down-regulated greater than twofold. The most significantly up-regulated miRNAs, hsa-mir-21 (miR-21), was quantitatively analyzed by TaqMan real-time PCR in 113 BC tumors. Interestingly, among the 113 BC cases, high level expression of miR-21 was significantly correlated with advanced clinical stage (P = 0.006, Fisher's exact text), lymph node metastasis (P = 0.007, Fisher's exact text), and shortened survival of the patients (hazard ratio [HR]=5.476, P < 0.001). Multivariate Cox regression analysis revealed this prognostic impact (HR=4.133, P = 0.001) to be independent of disease stage (HR=2.226, P = 0.013) and histological grade (HR=3.681, P = 0.033). This study could identify the differentiated miRNAs expression profile in BC and reveal that miR-21 overexpression was correlated with specific breast cancer biopathologic features, such as advanced tumor stage, lymph node metastasis, and poor survival of the patients, indicating that miR-21 may serve as a molecular prognostic marker for BC and disease progression.
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Affiliation(s)
- Li-Xu Yan
- State Key Laboratory of Oncology in Southern China, Sun Yat-sen University Cancer Center, Guangzhou 510060, People's Republic of China
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Sathyan P, Golden HB, Miranda RC. Competing interactions between micro-RNAs determine neural progenitor survival and proliferation after ethanol exposure: evidence from an ex vivo model of the fetal cerebral cortical neuroepithelium. J Neurosci 2007; 27:8546-57. [PMID: 17687032 PMCID: PMC2915840 DOI: 10.1523/jneurosci.1269-07.2007] [Citation(s) in RCA: 218] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2006] [Revised: 06/17/2007] [Accepted: 06/26/2007] [Indexed: 12/28/2022] Open
Abstract
The fetal brain is sensitive to a variety of teratogens, including ethanol. We showed previously that ethanol induced mitosis and stem cell maturation, but not death, in fetal cerebral cortex-derived progenitors. We tested the hypothesis that micro-RNAs (miRNAs) could mediate the teratogenic effects of ethanol in a fetal mouse cerebral cortex-derived neurosphere culture model. Ethanol, at a level attained by alcoholics, significantly suppressed the expression of four miRNAs, miR-21, -335, -9, and -153, whereas a lower ethanol concentration, attainable during social drinking, induced miR-335 expression. A GABA(A) receptor-dependent mechanism mediated miR-21, but not miR-335 suppression, suggesting that divergent mechanisms regulate ethanol-sensitive miRNAs. Antisense-mediated suppression of miR-21 expression resulted in apoptosis, suggesting that miR-21 is an antiapoptotic factor. miR-335 knockdown promoted cell proliferation and prevented death induced by concurrently suppressing miR-21, indicating that miR-335 is a proapoptotic, antimitogenic factor whose actions are antagonistic to miR-21. Computational analyses identified two genes, Jagged-1, a Notch-receptor ligand, and embryonic-lethal abnormal vision, Drosophila-like 2 (ELAVL2), a brain-specific regulator of RNA stability, as presumptive targets of three of four ethanol-sensitive micro-RNAs. Combined knockdown of miR-335, -21, and -153 significantly increased Jagged-1 mRNA. Furthermore, ethanol induced both Jagged-1 and ELAVL2 mRNA. The collective suppression of micro-RNAs is consistent with ethanol induction of cell cycle and neuroepithelial maturation in the absence of apoptosis. These data identify a role for micro-RNAs as epigenetic intermediaries, which permit teratogens to shape complex, divergent developmental processes, and additionally demonstrate that coordinately regulated miRNAs exhibit both functional synergy and antagonism toward each other.
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Affiliation(s)
- Pratheesh Sathyan
- Department Neuroscience and Experimental Therapeutics, College of Medicine, Texas A&M Health Science Center, Texas 77843-1114
| | - Honey B. Golden
- Department Neuroscience and Experimental Therapeutics, College of Medicine, Texas A&M Health Science Center, Texas 77843-1114
| | - Rajesh C. Miranda
- Department Neuroscience and Experimental Therapeutics, College of Medicine, Texas A&M Health Science Center, Texas 77843-1114
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