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Biomarker microRNA

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https://www.readbyqxmd.com/read/29160009/mirna-in-spinal-muscular-atrophy-pathogenesis-and-therapy
#1
REVIEW
Francesca Magri, Fiammetta Vanoli, Stefania Corti
Spinal muscular atrophy (SMA) is an autosomal recessive neurodegenerative disease characterized by the selective death of lower motor neurons in the brain stem and spinal cord. SMA is caused by mutations in the survival motor neuron 1 gene (SMN1), leading to the reduced expression of the full-length SMN protein. microRNAs (miRNAs) are small RNAs that regulate post-transcriptional gene expression. Recent findings have suggested an important role for miRNAs in the pathogenesis of motor neuron diseases, including SMA...
November 21, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/29159900/p100-functions-as-a-metastasis-activator-and-is-targeted-by-tumor-suppressing-microrna-320a-in-lung-cancer
#2
Aimin Xing, Li Pan, Jingzhen Gao
BACKGROUND: Lung cancer is among the most frequently diagnosed types of cancer worldwide, with high morbidity and mortality. Metastasis accounts for the deadliest and most poorly understood feature of lung cancer. Herein, we demonstrate that SND1 (also known as p100) acts as a candidate metastasis activator and is targeted by microRNA-320a (miR-320a) in lung cancer cells. METHODS: p100 expression in lung cancer cell lines and tissues was determined by quantitative real time-PCR and Western blot...
November 21, 2017: Thoracic Cancer
https://www.readbyqxmd.com/read/29158814/dna-methylation-of-mir-7-is-a-mechanism-involved-in-platinum-response-through-mafg-overexpression-in-cancer-cells
#3
Olga Vera, Julia Jimenez, Olga Pernia, Carlos Rodriguez-Antolin, Carmen Rodriguez, Fatima Sanchez Cabo, Javier Soto, Rocio Rosas, Sara Lopez-Magallon, Isabel Esteban Rodriguez, Ana Dopazo, Federico Rojo, Cristobal Belda, Rafael Alvarez, Jaime Valentin, Javier Benitez, Rosario Perona, Javier De Castro, Inmaculada Ibanez de Caceres
One of the major limitations associated with platinum use is the resistance that almost invariably develops in different tumor types. In the current study, we sought to identify epigenetically regulated microRNAs as novel biomarkers of platinum resistance in lung and ovarian cancers, the ones with highest ratios of associated chemo-resistance. Methods: We combined transcriptomic data from microRNA and mRNA under the influence of an epigenetic reactivation treatment in a panel of four paired cisplatin -sensitive and -resistant cell lines, followed by real-time expression and epigenetic validations for accurate candidate selection in 19 human cancer cell lines...
2017: Theranostics
https://www.readbyqxmd.com/read/29158773/construction-of-an-mirna-regulated-pathway-network-reveals-candidate-biomarkers-for-postmenopausal-osteoporosis
#4
Min Shao
We aimed to identify risk pathways for postmenopausal osteoporosis (PMOP) via establishing an microRNAs- (miRNA-) regulated pathway network (MRPN). Firstly, we identified differential pathways through calculating gene- and pathway-level statistics based on the accumulated normal samples using the individual pathway aberrance score (iPAS). Significant pathways based on differentially expressed genes (DEGs) using DAVID were extracted, followed by identifying the common pathways between iPAS and DAVID methods...
2017: Computational and Mathematical Methods in Medicine
https://www.readbyqxmd.com/read/29157673/circulating-micrornas-as-biomarkers-for-pediatric-astrocytomas
#5
Javier Enrique López-Aguilar, Miguel A Velázquez-Flores, Luis A Simón-Martínez, Richard Ávila-Miranda, Marco A Rodríguez-Florido, Ruth Ruiz-Esparza Garrido
BACKGROUND AND AIMS: Since MicroRNAs (miRNAs) are potent regulators of gene expression, their expression and function alterations are associated with different types of cancer, including pediatric astrocytoma. Since the secretion of miRNAs by tumors into corporal fluids has made it possible to identify biomarkers in cancer, their deter mination in pediatric astrocytoma is vital. In order to gain insight into the mechanisms controlled by miRNAs in these neoplasms, we tested the expression of miRNAs 130a, 145, 335, 1303, and let-7g-3p by qPCR in tumors and blood serum from pediatric patients with astrocytoma...
May 2017: Archives of Medical Research
https://www.readbyqxmd.com/read/29157446/dynamic-visualization-of-multi-level-molecular-data-the-director-package-in-r
#6
Katherine Icay, Chengyu Liu, Sampsa Hautaniemi
BACKGROUND AND OBJECTIVE: High-throughput measurement technologies have triggered a rise in large-scale cancer studies containing multiple levels of molecular data. While there are a number of efficient methods to analyze individual data types, there are far less that enhance data interpretation after analysis. We present the R package Director, a dynamic visualization approach to linking and interrogating multiple levels of molecular data after analysis for clinically meaningful, actionable insights...
January 2018: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/29156844/a-three-microrna-signature-for-lung-squamous-cell-carcinoma-diagnosis-in-chinese-male-patients
#7
Lan Zhang, Xia Shan, Jun Wang, Jun Zhu, Zebo Huang, Huo Zhang, Xin Zhou, Wenfang Cheng, Yongqian Shu, Wei Zhu, Ping Liu
Various studies have demonstrated the diagnostic value of microRNA (miRNA) for lung cancer, but miRNA signatures varied between different subtypes. Whether serum miRNAs could be used as biomarkers in lung squamous cell carcinoma (SCC) remains unknown. Using quantitative real-time polymerase chain reaction (qRT-PCR) based Exiqon panel, 38 differentially expressed miRNAs were identified from 3 male lung SCC pool samples and 1 normal control (NC) pool in the initial screening phase. After the training (24 SCC VS...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156521/micrornas-as-novel-biomarkers-for-colorectal-cancer-new-outlooks
#8
REVIEW
Naghmeh Shirafkan, Behzad Mansoori, Ali Mohammadi, Navid Shomali, Mehri Ghasbi, Behzad Baradaran
Colorectal cancer is one of the most prevalent cancers with high mortality in the world. MicroRNAs are a class of small non-coding RNAs that regulate gene expression through targeting mRNAs. MicroRNAs involve in many biological and pathological processes such as cell growth, differentiation, apoptosis. etc. Dysregulation of miRNAs expression patterns have been reported in many tumors including Colorectal Cancer. Various studies indicate that miRNAs can be utilized as diagnostic and prognostic biomarkers for evaluation of tumor initiation, development, invasion, metastasis and response to chemotherapeutic drugs...
November 14, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29156406/target-catalyzed-hairpin-assembly-and-metal-organic-frameworks-mediated-nonenzymatic-co-reaction-for-multiple-signal-amplification-detection-of-mir-122-in-human-serum
#9
Yuliang Li, Chao Yu, Bo Yang, Zhirui Liu, Peiyuan Xia, Qian Wang
Herein, a new type of multifunctional iron based metal-organic frameworks (PdNPs@Fe-MOFs) has been synthesized by assembly palladium nanoparticles on the surface of Fe-MIL-88NH2 MOFs microcrystals, and first applied in electrochemical biosensor for ultrasensitive detection of microRNA-122 (miR-122, a biomarker of drug-induced liver injury). The nanohybrids have not only been utilized as ideal nanocarriers for immobilization of signal probes, but also used as redox probes and electrocatalysts. In this biosensor, two hairpin probes were designed as capture probes and signal probes, respectively...
November 15, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/29154956/biomarkers-in-mitral-regurgitation
#10
REVIEW
Magnus Bäck, Rodolfo Pizarro, Marie-Annick Clavel
Mitral regurgitation (MR) is a common cause of heart failure but may also remain silent without either symptoms or altered cardiac function. In the latter case, management is still controversial and biomarkers could be an important means to solving remaining issues in MR management. As objective markers of myocardial stress and early left ventricular dysfunction, biomarkers may for example facilitate the identification of patients with benefit from early surgery of degenerative MR. The most studied biomarkers are the natriuretic peptides (NPs), especially brain NP, as well as its N terminal prohormone...
November 15, 2017: Progress in Cardiovascular Diseases
https://www.readbyqxmd.com/read/29154194/micrornas-in-intestinal-barrier-function-inflammatory-bowel-disease-and-related-cancers-their-effects-and-therapeutic-potentials
#11
REVIEW
Esmerina Tili, Jean-Jacques Michaille, Victoria Piurowski, Brooke Rigot, Carlo M Croce
The initiation and development or inflammatory bowel disease (IBD) and associated colorectal cancers, have been linked to inflammation. MicroRNAs are non-coding regulators of gene expression that have gained great attention due to their capability to regulate the expression of a number of target transcripts. It is now generally admitted that microRNAs are instrumental in gut pathologies, in particular through their targeting of transcripts encoding proteins of the intestinal barrier (IB) and their regulators...
November 15, 2017: Current Opinion in Pharmacology
https://www.readbyqxmd.com/read/29152124/identification-of-a-sixteen-microrna-signature-as-prognostic-biomarker-for-stage-ii-and-iii-colon-cancer
#12
Havjin Jacob, Luka Stanisavljevic, Kristian Eeg Storli, Kjersti E Hestetun, Olav Dahl, Mette P Myklebust
Despite advances in colon cancer research and novel therapies, high risk of recurrence remains a major challenge. This study reports miRNA expression profiling as a biomarker for the prognosis of TNM stage II and III colon cancer. Fresh frozen biopsies from the study cohort (N=111) were analyzed for miRNA by RT-qPCR and LASSO regression analysis was used to build a classifier of miRNAs. The prognostic accuracy was tested and the classifier was validated in an independent colon cohort (TCGA-COAD, N=209). The LASSO regression analysis identified a 16-miRNA signature including miR-143-5p, miR-27a-3p, miR-31-5p, miR-181a-5p, miR-30b-5p, miR-30d-5p, miR-146a-5p, miR-23a-3p, miR-150-5p, miR-210-3p, miR-25-3p, miR-196a-5p, miR-148a-3p, miR-222-3p, miR-30c-5p and miR-223-3p...
October 20, 2017: Oncotarget
https://www.readbyqxmd.com/read/29152116/microrna-526b-servers-as-a-prognostic-factor-and-exhibits-tumor-suppressive-property-by-targeting-sirtuin-7-in-hepatocellular-carcinoma
#13
Xin Liu, Liu Yang, Jianfeng Tu, Wenwei Cai, Meiqi Zhang, Zhangxuan Shou, Yingmin Yao, Qiuran Xu
Recent studies have reported that microRNA-526b (miR-526b) is implicated in the growth and metastasis of cancer cells. However, the clinical significance of miR-526b and its role as well as underlying mechanisms are largely unknown in hepatocellular carcinoma (HCC). Here, we detected miR-526b expression difference between HCC and matched nontumor tissues with qRT-PCR. We found that miR-526b displayed lower expression in HCC patient tissues and cells. Clinical analysis revealed that low miR-526b expression correlated with large tumor size, venous infiltration, advanced tumor-node-metastasis (TNM) stage...
October 20, 2017: Oncotarget
https://www.readbyqxmd.com/read/29151939/clinical-impact-of-micrornas-associated-with-cancer-stem-cells-as-a-prognostic-factor-in-ovarian-carcinoma
#14
So Youn Cha, Yeon Ho Choi, Sohyun Hwang, Ju-Yeon Jeong, Hee Jung An
Background: Ovarian carcinoma is a highly lethal gynecological malignancy due to its frequent relapses and adoption of chemoresistance. To develop new biomarkers for disease progression in ovarian carcinoma, CSCs, which are considered to contribute to disease relapse and metastasis, were isolated from human ovarian carcinoma tissues, and differentially expressed microRNAs (miRNAs) in CSCs were identified and assessed the clinical implication of expression of these miRNAs. Methods: Primary cancer cells derived from human ovarian carcinomas were cultured and spheroid-forming cells (SFCs) were isolated...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/29151358/exosomal-microrna-a-novel-biomarker-for-breast-cancer
#15
Yunjie He, Fei Deng, Sujin Yang, Dandan Wang, Xiu Chen, Shanliang Zhong, Jianhua Zhao, Jinhai Tang
Breast cancer is the most common invasive malignancy among females worldwide. MicroRNAs (miRNAs) are small noncoding RNAs that regulate post-transcriptional gene expression by binding to the 3'-untranslated regions of targeted mRNAs. Recently, exosomes have been recognized to play critical roles in breast cancer. MiRNAs, as the most important inclusions in exosomes, are stable in the blood and other body fluids, making them ideal candidate biomarkers. In this review, we provide a complex overview of exosomal miRNAs in breast cancer...
November 20, 2017: Biomarkers in Medicine
https://www.readbyqxmd.com/read/29150941/micrornas-as-predictive-biomarkers-for-myocardial-injury-in-aged-mice-following-myocardial-infarction
#16
Natia Qipshidze Kelm, Kellianne M Piell, Eugenia Wang, Marsha P Cole
The occurrence of myocardial infarction (MI) increases appreciably with age. In the Framingham Heart Study, the incidence of MI more than doubles for men and increases more than 5-fold in women (ages 55 to 64 years compared to 85 to 94 years). MicroRNAs (miRNAs) quantitatively regulate their target's expression post-transcriptionally by either silencing action through binding at the 3'UTR domains or degrading the messages at their coding regions. In either case, these regulations affect the cardiac transcriptional output and cardiac function...
November 18, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29149908/exosomal-micrornas-as-potential-circulating-biomarkers-in-gastrointestinal-tract-cancers-a-systematic-review-protocol
#17
Elmira Gheytanchi, Zahra Madjd, Leila Janani, Arezoo Rasti, Roya Ghods, Fatemeh Atyabi, Mohammad Hossein Asadi Lari, Sadegh Babashah
BACKGROUND: Metastasis is the most frequent type of recurrence in gastrointestinal (GI) cancers, and there is an emerging potential for new diagnostic and therapeutic approaches, especially in the cases of metastatic GI carcinomas. The expression profiles of circulating exosomal microRNAs are of particular interest as novel non-invasive diagnostic and prognostic biomarkers for improved detection of GI cancers in body fluids, especially in the serum of patients with recurrent cancers. The aim of this study is to systematically review primary studies and identify the miRNA profiles of serum exosomes of GI cancers...
November 17, 2017: Systematic Reviews
https://www.readbyqxmd.com/read/29149541/diagnostic-accuracy-of-serum-mir-122-and-mir-199a-in-women-with-endometriosis
#18
Ahmed M Maged, Wesam S Deeb, Azza El Amir, Sherif S Zaki, Heba El Sawah, Maged Al Mohamady, Ahmed A Metwally, Maha A Katta
OBJECTIVE: To evaluate the value of serum microRNA-122 (miR-122) and miR-199a as reliable noninvasive biomarkers in the diagnosis of endometriosis. METHODS: During 2015-2016, at a teaching hospital in Egypt, a prospective cohort study was conducted on 45 women with pelvic endometriosis and 35 women who underwent laparoscopy for pelvic pain but were not diagnosed with endometriosis. Blood and peritoneal fluid (PF) samples were collected; interleukin-6 (IL-6) was detected by enzyme-linked immunosorbent assay and miR-122 and miR-199a expression was measured by quantitative real-time polymerase chain reaction...
November 17, 2017: International Journal of Gynaecology and Obstetrics
https://www.readbyqxmd.com/read/29148977/the-role-of-micrornas-in-chronic-respiratory-disease-recent-insights
#19
Lindsay R Stolzenburg, Ann Harris
Chronic respiratory diseases encompass a group of diverse conditions affecting the airways, which all impair lung function over time. They include cystic fibrosis, idiopathic pulmonary fibrosis, chronic obstructive pulmonary disease, and asthma, which together affect hundreds of millions of people worldwide. MicroRNAs (miRNAs), a class of small non-coding RNAs involved in post-transcriptional gene repression, are now recognized as major regulators in the development and progression of chronic lung disease. Alterations in miRNA abundance occur in lung tissue, inflammatory cells, and freely circulating in blood and are thought to function both as drivers and modifiers of disease...
November 27, 2017: Biological Chemistry
https://www.readbyqxmd.com/read/29146439/risk-stratification-after-paracetamol-overdose-using-mechanistic-biomarkers-results-from-two-prospective-cohort-studies
#20
James W Dear, Joanna I Clarke, Ben Francis, Lowri Allen, Jonathan Wraight, Jasmine Shen, Paul I Dargan, David Wood, Jamie Cooper, Simon H L Thomas, Andrea L Jorgensen, Munir Pirmohamed, B Kevin Park, Daniel J Antoine
BACKGROUND: Paracetamol overdose is common but patient stratification is suboptimal. We investigated the usefulness of new biomarkers that have either enhanced liver specificity (microRNA-122 [miR-122]) or provide mechanistic insights (keratin-18 [K18], high mobility group box-1 [HMGB1], and glutamate dehydrogenase [GLDH]). The use of these biomarkers could help stratify patients for their risk of liver injury at hospital presentation. METHODS: Using data from two prospective cohort studies, we assessed the potential for biomarkers to stratify patients who overdose with paracetamol...
November 13, 2017: Lancet. Gastroenterology & Hepatology
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