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Nirgude S, Desai S, Choudhary B. Curcumin alters distinct molecular pathways in breast cancer subtypes revealed by integrated miRNA/mRNA expression analysis. Cancer Rep (Hoboken) 2022; 5:e1596. [PMID: 34981672 PMCID: PMC9575497 DOI: 10.1002/cnr2.1596] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Revised: 10/15/2021] [Accepted: 11/22/2021] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Curcumin is well known for its anticancer properties. Its cytotoxic activity has been documented in several cancer cell lines, including breast cancer. The pleiotropic activity of curcumin as an antioxidant, an antiangiogenic, antiproliferative, and pro-apoptotic, is due to its diverse targets, such as signaling pathways, protein/enzyme, or noncoding gene. AIM This study aimed to identify key miRNAs and mRNAs induced by curcumin in breast cancer cells MCF7, T47D (hormone positive), versus MDA-MB231 (hormone negative) using comparative analysis of global gene expression profiles. METHODS RNA was isolated and subjected to mRNA and miRNA library sequencing to study the global gene expression profile of curcumin-treated breast cancer cells. The differential expression of gene and miRNA was performed using the DESeq R package. The enriched pathways were studied using cluster profileR, and integrated miRNA-mRNA analysis was carried out using miRtarvis and miRmapper tools. RESULTS Curcumin treatment led to upregulation of 59% TSGs in MCF7, 21% in MDA-MB-231 cells, and 36% TSGs in T47D, and downregulation of 57% oncogenes in MCF7, 76% in MDA-MB-231, and 91% in T47D. Similarly, curcumin treatment led to upregulation of 32% TSmiRs in MCF7, 37.5% in MDA-MB231, and 62.5% in T47D, and downregulation of 77% oncomiRs in MCF7, 50% in MDA-MB231 and 28.6% in T47D. Integrated analysis of miRNA-mRNA led to the identification of a common NFKB pathway altered by curcumin in all three cell lines. Analysis of uniquely enriched pathway revealed non-integrin membrane-ECM interactions and laminin interactions in MCF7; extracellular matrix organization and degradation in MDA-MB-231 and cell cycle arrest and G2/M transition in T47D. CONCLUSION Curcumin regulates miRNA and mRNA in a cell type-specific manner. The integrative analysis led to the detection of miRNAs and mRNAs pairs, which can be used as biomarkers associated with carcinogenesis, diagnostic, and treatment response in breast cancer.
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Affiliation(s)
- Snehal Nirgude
- Institute of Bioinformatics and Applied BiotechnologyBangaloreIndia
- Division of Human GeneticsChildren's Hospital of PhiladelphiaPhiladelphiaUSA
| | - Sagar Desai
- Institute of Bioinformatics and Applied BiotechnologyBangaloreIndia
- Manipal Academy of Higher EducationManipalIndia
| | - Bibha Choudhary
- Institute of Bioinformatics and Applied BiotechnologyBangaloreIndia
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Bagnicka E, Kawecka-Grochocka E, Pawlina-Tyszko K, Zalewska M, Kapusta A, Kościuczuk E, Marczak S, Ząbek T. MicroRNA expression profile in bovine mammary gland parenchyma infected by coagulase-positive or coagulase-negative staphylococci. Vet Res 2021; 52:41. [PMID: 33676576 PMCID: PMC7937231 DOI: 10.1186/s13567-021-00912-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Accepted: 02/12/2021] [Indexed: 12/14/2022] Open
Abstract
MicroRNAs (miRNAs) are short, non-coding RNAs, 21-23 nucleotides in length which are known to regulate biological processes that greatly impact immune system activity. The aim of the study was to compare the miRNA expression in non-infected (H) mammary gland parenchyma samples with that of glands infected with coagulase-positive staphylococci (CoPS) or coagulase-negative staphylococci (CoNS) using next-generation sequencing. The miRNA profile of the parenchyma was found to change during mastitis, with its profile depending on the type of pathogen. Comparing the CoPS and H groups, 256 known and 260 potentially new miRNAs were identified, including 32 that were differentially expressed (p ≤ 0.05), of which 27 were upregulated and 5 downregulated. Comparing the CoNS and H groups, 242 known and 171 new unique miRNAs were identified: 10 were upregulated (p ≤ 0.05), and 2 downregulated (p ≤ 0.05). In addition, comparing CoPS with H and CoNS with H, 5 Kyoto Encyclopedia of Genes and Genomes pathways were identified; in both comparisons, differentially-expressed miRNAs were associated with the bacterial invasion of epithelial cells and focal adhesion pathways. Four gene ontology terms were identified in each comparison, with 2 being common to both immune system processes and signal transduction. Our results indicate that miRNAs, especially miR-99 and miR-182, play an essential role in the epigenetic regulation of a range of cellular processes, including immunological systems bacterial growth in dendritic cells and disease pathogenesis (miR-99), DNA repair and tumor progression (miR-182).
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Affiliation(s)
- Emilia Bagnicka
- Department of Biotechnology and Nutrigenomics, Institute of Genetics and Animal Biotechnology Polish Academy of Sciences, ul Postepu 36A, 05-552, Jastrzębiec, Poland.
| | - Ewelina Kawecka-Grochocka
- Department of Biotechnology and Nutrigenomics, Institute of Genetics and Animal Biotechnology Polish Academy of Sciences, ul Postepu 36A, 05-552, Jastrzębiec, Poland
- Department of Preclinical Sciences, Institute of Veterinary Medicine, Warsaw University of Life Sciences, ul Ciszewskiego 8, 02-786, Warsaw, Poland
| | - Klaudia Pawlina-Tyszko
- Department of Animal Molecular Biology, The National Research Institute of Animal Production, ul Krakowska 1., 32-083, Balice near Krakow, Poland
| | - Magdalena Zalewska
- Department of Biotechnology and Nutrigenomics, Institute of Genetics and Animal Biotechnology Polish Academy of Sciences, ul Postepu 36A, 05-552, Jastrzębiec, Poland
- Department of Applied Microbiology, Institute of Microbiology, Faculty of Biology, University of Warsaw, ul Miecznikowa 1, 02-096, Warsaw, Poland
| | - Aleksandra Kapusta
- Department of Biotechnology and Nutrigenomics, Institute of Genetics and Animal Biotechnology Polish Academy of Sciences, ul Postepu 36A, 05-552, Jastrzębiec, Poland
| | - Ewa Kościuczuk
- Department of Biotechnology and Nutrigenomics, Institute of Genetics and Animal Biotechnology Polish Academy of Sciences, ul Postepu 36A, 05-552, Jastrzębiec, Poland
| | - Sylwester Marczak
- Experimental Farm, Institute of Genetics and Animal Biotechnology Polish Academy of Sciences, ul Postepu 36A, 05-552, Jastrzębiec, Poland
| | - Tomasz Ząbek
- Department of Animal Molecular Biology, The National Research Institute of Animal Production, ul Krakowska 1., 32-083, Balice near Krakow, Poland
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Icli B, Wu W, Ozdemir D, Li H, Cheng HS, Haemmig S, Liu X, Giatsidis G, Avci SN, Lee N, Guimaraes RB, Manica A, Marchini JF, Rynning SE, Risnes I, Hollan I, Croce K, Yang X, Orgill DP, Feinberg MW. MicroRNA-615-5p Regulates Angiogenesis and Tissue Repair by Targeting AKT/eNOS (Protein Kinase B/Endothelial Nitric Oxide Synthase) Signaling in Endothelial Cells. Arterioscler Thromb Vasc Biol 2019; 39:1458-1474. [PMID: 31092013 PMCID: PMC6594892 DOI: 10.1161/atvbaha.119.312726] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Accepted: 04/29/2019] [Indexed: 12/16/2022]
Abstract
Objective- In response to tissue injury, the appropriate progression of events in angiogenesis is controlled by a careful balance between pro and antiangiogenic factors. We aimed to identify and characterize microRNAs that regulate angiogenesis in response to tissue injury. Approach and Results- We show that in response to tissue injury, microRNA-615-5p (miR-615-5p) is rapidly induced and serves as an antiangiogenic microRNA by targeting endothelial cell VEGF (vascular endothelial growth factor)-AKT (protein kinase B)/eNOS (endothelial nitric oxide synthase) signaling in vitro and in vivo. MiR-615-5p expression is increased in wounds of diabetic db/db mice, in plasma of human subjects with acute coronary syndromes, and in plasma and skin of human subjects with diabetes mellitus. Ectopic expression of miR-615-5p markedly inhibited endothelial cell proliferation, migration, network tube formation in Matrigel, and the release of nitric oxide, whereas miR-615-5p neutralization had the opposite effects. Mechanistic studies using transcriptomic profiling, bioinformatics, 3' untranslated region reporter and microribonucleoprotein immunoprecipitation assays, and small interfering RNA dependency studies demonstrate that miR-615-5p inhibits the VEGF-AKT/eNOS signaling pathway in endothelial cells by targeting IGF2 (insulin-like growth factor 2) and RASSF2 (Ras-associating domain family member 2). Local delivery of miR-615-5p inhibitors, markedly increased angiogenesis, granulation tissue thickness, and wound closure rates in db/db mice, whereas miR-615-5p mimics impaired these effects. Systemic miR-615-5p neutralization improved skeletal muscle perfusion and angiogenesis after hindlimb ischemia in db/db mice. Finally, modulation of miR-615-5p expression dynamically regulated VEGF-induced AKT signaling and angiogenesis in human skin organoids as a model of tissue injury. Conclusions- These findings establish miR-615-5p as an inhibitor of VEGF-AKT/eNOS-mediated endothelial cell angiogenic responses and that manipulating miR-615-5p expression could provide a new target for angiogenic therapy in response to tissue injury. Visual Overview- An online visual overview is available for this article.
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Affiliation(s)
- Basak Icli
- Cardiovascular Division, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115
| | - Winona Wu
- Cardiovascular Division, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115
| | - Denizhan Ozdemir
- Cardiovascular Division, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115
- Department of Medical Biology, Hacettepe University, Ankara, Turkey
| | - Hao Li
- Cardiovascular Division, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115
| | - Henry S. Cheng
- Cardiovascular Division, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115
| | - Stefan Haemmig
- Cardiovascular Division, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115
| | - Xin Liu
- Cardiovascular Division, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115
| | - Giorgio Giatsidis
- Division of Plastic Surgery, Department of Surgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115
| | - Seyma Nazli Avci
- Cardiovascular Division, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115
| | - Nathan Lee
- Cardiovascular Division, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115
| | - Raphael Boesch Guimaraes
- Instituto de Cardiologia do Rio Grande do Sul, Fundação Universitária de Cardiologia (ICFUC), Porto Alegre, RS, Brazil
| | - Andre Manica
- Instituto de Cardiologia do Rio Grande do Sul, Fundação Universitária de Cardiologia (ICFUC), Porto Alegre, RS, Brazil
| | - Julio F Marchini
- Heart Institute, University of São Paulo Medical School, São Paulo, Brazil
| | - Stein Erik Rynning
- Rheumatology, Lillehamer Hospital for Rheumatic Diseases, Lillehamer, Norway
| | - Ivar Risnes
- Rheumatology, Lillehamer Hospital for Rheumatic Diseases, Lillehamer, Norway
| | - Ivana Hollan
- Cardiovascular Division, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115
- Research Department, Lillehamer Hospital for Rheumatic Diseases, Lillehamer, Norway
| | - Kevin Croce
- Cardiovascular Division, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115
| | | | - Dennis P. Orgill
- Division of Plastic Surgery, Department of Surgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115
| | - Mark W. Feinberg
- Cardiovascular Division, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115
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Huang L, Liu X. microRNA-370 Promotes Cell Growth by Targeting WNK2 in Breast Cancer. DNA Cell Biol 2019; 38:501-509. [PMID: 31009242 DOI: 10.1089/dna.2018.4602] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Affiliation(s)
- Li Huang
- Central Hospital of Zibo, Zhangdian District, Zibo, Shandong, China
| | - Xiangyu Liu
- Central Hospital of Zibo, Zhangdian District, Zibo, Shandong, China
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Hendy OM, Rabie H, El Fouly A, Abdel-Samiee M, Abdelmotelb N, Elshormilisy AA, Allam M, Ali ST, Bahaa EL-Deen NM, Abdelsattar S, Mohamed SM. The Circulating Micro-RNAs (-122, -34a and -99a) as Predictive Biomarkers for Non-Alcoholic Fatty Liver Diseases. Diabetes Metab Syndr Obes 2019; 12:2715-2723. [PMID: 31908512 PMCID: PMC6927587 DOI: 10.2147/dmso.s231321] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Accepted: 11/20/2019] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND It remains essential for patient safety to develop non-invasive diagnostic tools to diagnose non-alcoholic fatty liver rather than invasive techniques. AIM Our case-control study was to address the value of circulating miRNAs as a potential non-invasive biomarker for the diagnosis of non-alcoholic fatty acid diseases (NAFLD) and monitoring of disease progression. METHODS Routine clinical assessment, laboratory tests, anthropometric study, and liver biopsy results reported for 210 patients with NAFLD (124 patients of simple steatosis (SS) and 86 of non-alcoholic steatohepatitis (NASH)). Apparently matched for age and gender, healthy participants (n= 90) were enrolled as a control group. Serum samples were tested for micro-RNAs (-122, -34a and -99a) by quantitative-PCR. RESULTS By histopathology, 124 of the NAFLD group were of SS and 86 patients were of NASH. Compared with the control subjects, both mi-RNA-122 and -34a levels were increased in NAFLD (p< 001) and at a cut-off = 1.261, mi-RNA-122 had 92% sensitivity, 85% specificity to differentiate NAFLD from healthy controls, while mi-RNA-99a were significantly decreased in NAFLD patients with an observed decrease in disease severity, and at a cut-off = 0.46, miRNA-99a had 94% sensitivity and 96% specificity to discriminate SS from NASH. CONCLUSION The integration of a circulating mi-RNA panel to diagnose NAFLD cases and to discriminate between SS and NASH. Large-scale study is still needed to verify the other mi-RNA profiles and their role in NAFLD pathogenesis and targeting therapy.
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Affiliation(s)
- Olfat M Hendy
- Clinical Pathology Department, National Liver Institute, Menoufia University, Shebin El-Kom, Egypt
| | - Hatem Rabie
- Clinical Pathology Department, National Liver Institute, Menoufia University, Shebin El-Kom, Egypt
| | - Amr El Fouly
- Endemic Medicine Department, Helwan University, Cairo, Egypt
| | - Mohamed Abdel-Samiee
- Hepatology and Gastroenterology Department, National Liver Institute, Menoufia University, Shebin El-Kom, Egypt
- Correspondence: Mohamed Abdel-Samiee National Liver Institute, Yassin Abdel-Ghafar Street, Shebin El-Kom, Menoufia32511, EgyptTel +2048 2222740Fax +2048 2234685 Email
| | - Nashwa Abdelmotelb
- Clinical Pathology Department, National Liver Institute, Menoufia University, Shebin El-Kom, Egypt
| | | | - Mahmoud Allam
- Hepatology and Gastroenterology Department, National Liver Institute, Menoufia University, Shebin El-Kom, Egypt
| | - Samia Taher Ali
- Internal Medicine Department, Faculty of Medicine for Girls, Al-Azhar University, Cairo, Egypt
| | | | - Shimaa Abdelsattar
- Department of Clinical Biochemistry, National Liver Institute, Menoufia University, Shebin El-Kom, Egypt
| | - Somia Mokabel Mohamed
- Department of Physiology, Faculty of Medicine for Girls, Al-Azhar University, Cairo, Egypt
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Lu M, Wang Y, Zhou S, Xu J, Li J, Tao R, Zhu Y. MicroRNA-370 suppresses the progression and proliferation of human astrocytoma and glioblastoma by negatively regulating β-catenin and causing activation of FOXO3a. Exp Ther Med 2017; 15:1093-1098. [PMID: 29399110 DOI: 10.3892/etm.2017.5494] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2016] [Accepted: 06/29/2017] [Indexed: 02/07/2023] Open
Abstract
Certain microRNAs (miRs) regulate the progression and metastasis of various cancer types. In the present study, the role of miR-370 in the progression and proliferation of human astrocytoma and glioblastoma cells was assessed and the underlying molecular mechanism was investigated. miR-370 levels in clinical specimens of human glioma and peritumoral tissues were determined by reverse-transcription quantitative PCR. Oligonucleotide mimics and inhibitors were transfected into the U-251MG human astrocytoma cell line and the and U-87MG glioblastoma cell line and the cell viability of was determined by an MTT assay. The expression of β-catenin and forkhead box protein (FOX)O3a was determined by western blot analysis. The results revealed that the expression of miR-370 in human glioma tissues was significantly decreased compared with that in peritumoral tissues. The miR-370 levels in patients with grade III/IV gliomas were significantly decreased compared with those in grade I/II. Transfection with miR-370 mimics inhibited the proliferation of U-251MG and U-87MG cells. Furthermore, the miR-370 levels were negatively correlated with β-catenin and positively correlated with nuclear FOXO3a. In conclusion, miR-370 inhibited the proliferation of human glioma cells by regulating the levels of β-catenin and the activation of FOXO3a, suggesting that miR-370 was a tumor suppressor in the progression of human astrocytoma and glioblastoma cells.
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Affiliation(s)
- Ming Lu
- Department of Radiotherapy, Shandong Cancer Hospital Affiliated to Shandong University, Shandong Academy of Medical Sciences, Jinan, Shandong 250117, P.R. China
| | - Yong Wang
- Department of Neurosurgery, Shandong Cancer Hospital Affiliated to Shandong University, Shandong Academy of Medical Sciences, Jinan, Shandong 250117, P.R. China
| | - Shizhen Zhou
- Department of Neurosurgery, Shandong Cancer Hospital Affiliated to Shandong University, Shandong Academy of Medical Sciences, Jinan, Shandong 250117, P.R. China
| | - Jun Xu
- Department of Neurosurgery, Shandong Cancer Hospital Affiliated to Shandong University, Shandong Academy of Medical Sciences, Jinan, Shandong 250117, P.R. China
| | - Jing Li
- Department of Neurosurgery, Shandong Cancer Hospital Affiliated to Shandong University, Shandong Academy of Medical Sciences, Jinan, Shandong 250117, P.R. China
| | - Rongjie Tao
- Department of Neurosurgery, Shandong Cancer Hospital Affiliated to Shandong University, Shandong Academy of Medical Sciences, Jinan, Shandong 250117, P.R. China
| | - Yufang Zhu
- Department of Neurosurgery, Shandong Cancer Hospital Affiliated to Shandong University, Shandong Academy of Medical Sciences, Jinan, Shandong 250117, P.R. China
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Del Carmen Martínez-Jiménez V, Méndez-Mancilla A, Patricia Portales-Pérez D. miRNAs in nutrition, obesity, and cancer: The biology of miRNAs in metabolic disorders and its relationship with cancer development. Mol Nutr Food Res 2017; 62. [PMID: 28594107 DOI: 10.1002/mnfr.201600994] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Revised: 04/13/2017] [Accepted: 05/08/2017] [Indexed: 12/17/2022]
Abstract
SCOPE The scope of this review is to explain how metabolic disorders originated by a deficient nutrition can develop into a neoplastic process by the alteration of epigenetic mechanisms like miRNAs. Obesity is a proinflammatory state with a wide impact on health around the world that is associated with neoplastic diseases. Epigenetic mechanisms have a central role in the obesogenic environment, which participates on the development of comorbidities such as cancer. METHODS AND RESULTS We made an exhaustive review of the most recent reports about metabolic disorders with nutrition and their relationship with miRNAs, and their risk of developing into oncogenic processes. MicroRNAs (miRNAs) act as one of the major epigenetic mechanisms that can affect the metabolic reprogramming of cellular metabolism that plays an important role in the oncogenic process. There is evidence that some foods may contribute to diminishing the risk of cancer as well as epidemiological studies that support the notion that diets high in animal protein and fat promote cancer risk. Therefore, diets high in fruit and vegetables reduce the risk of cancer. One of the principal explanations is that these foods contain bioactive compounds that increase the efficacy of epigenetic mechanisms, which in turn decrease the risk of obesity and its comorbidities. CONCLUSION In this review, we show how miRNAs are implicated in several signaling pathways as well as illustrating some bioactive compounds that impact inflammation and cancer development.
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Affiliation(s)
| | - Alejandro Méndez-Mancilla
- Laboratorio de Inmunología y Biología Celular y Molecular, Facultad de Ciencias Químicas, UASLP San Luis Potosí, SLP México
| | - Diana Patricia Portales-Pérez
- Laboratorio de Inmunología y Biología Celular y Molecular, Facultad de Ciencias Químicas, UASLP San Luis Potosí, SLP México
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Saberi A, Danyaei A, Neisi N, Dastoorpoor M, Tahmasbi Birgani MJ. MiR-328 May be Considered as an Oncogene in Human Invasive Breast Carcinoma. IRANIAN RED CRESCENT MEDICAL JOURNAL 2016; 18:e42360. [PMID: 28203454 PMCID: PMC5294425 DOI: 10.5812/ircmj.42360] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/18/2016] [Revised: 10/16/2016] [Accepted: 10/30/2016] [Indexed: 12/21/2022]
Abstract
Background The recent investigations have rendered microRNAs (miRs) as a novel biomarker in cancer research. In fact, alteration in miR expression may be associated with tumor suppression, tumorigenesis, metastasis, and poor prognosis in human breast cancer (BC). Objectives The aim of this clinical experimental study was to measure the miR-328 expression level in breast cancer tissues, at first. Then, we tried to find out any possible correlation between miR-328 and prognostic and predictive biomarkers in BC. Both of these two objectives were investigated for the first time; and we did not find any similar survey measuring the expression level of miR-328 in both tumor and non-tumor breast tissues. This research was conducted in Iran (Ahvaz, Khuzestan), between December 2013 and April 2014. Furthermore, we did not find any previous document investigating the correlation between miR-328 expression level and prognostic factors in BC. Due to the lack of similar studies intending to measure the expression level of miR-328 in tumor and adjacent non-tumor tissues, we decided to carry out a pilot study. Methods We measured the expression level of miR-328 by Poly (A) real-time PCR based on SYBR Green-I in 28 fresh samples of BC tissues and 28 samples of normal adjacent tissues, including invasive ductal carcinoma (IDC), invasive lobular carcinoma (ILC), and ductal carcinoma in situ (DCIS). We tried to attribute the results to clinicopathologic features such as status of estrogen and progesterone receptors (ER/PR), HER2/neu (HER2), P53 and also Ki67 labeling (Ki67-LI). Results The results showed that the miR-328 median level of expression was 0.88 (2-ΔΔCt) (25th-75th percentile, 0.07 - 2.34). It means that the expression level increased in tumor tissues compared to normal adjacent tissues (NATs). However, a statistically significant correlation between the miR-328 median expression level and prognostic factors, including pathologic diagnosis, age, and also the status of ER, PR, HER2, and Ki67-LI was not observed (P > 0.05). Conclusions Therefore, it might be possible to consider miR-328 as an oncogene; but not necessarily an oncomiR, in human BC.
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Affiliation(s)
- Alihossein Saberi
- Department of Medical Genetics, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Amir Danyaei
- Department of Medical Physics, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
- Corresponding Author: Amir Danyaei, Department of Medical Physics, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran. Tel/Fax: +98-6133330794, E-mail:
| | - Niloofar Neisi
- Department of Medical Virology, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Maryam Dastoorpoor
- Modeling in Health Research Center, Institute for Futures Studies in Health, Kerman University of Medical Sciences, Kerman, Iran
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