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Biomarker microRNA

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https://www.readbyqxmd.com/read/28732393/microrna-30a-suppresses-tumor-progression-by-blocking-ras-raf-mek-erk-signaling-pathway-in-hepatocellular-carcinoma
#1
Kun Zhou, Xiaoyu Luo, Yu Wang, Dachun Cao, Gang Sun
Emerging reports suggest microRNAs (miRNAs) play a vital role in the progression of malignant tumors. MiR-30a is downregulated in a variety of cancers and acts as a tumor suppressing gene. However, the molecular mechanisms of miRNA-30a in hepatocellular carcinoma (HCC) are still unclear. Hereby, in this study, we detected that miR-30a expression was significantly down-regulated in both HCC tissues compared with adjacent non-cancerous liver tissues, and we also observed that miR-30a expression was lower in HCC cell lines than that of normal controls...
July 17, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28732384/microrna-181-as-a-prognostic-biomarker-for-survival-in-acute-myeloid-leukemia-a-meta-analysis
#2
Qiang Guo, Junwen Luan, Ni Li, Zhen Zhang, Xiaoxiao Zhu, Lin Zhao, Ran Wei, Linlin Sun, Yin Shi, Xunqiang Yin, Na Ding, Guosheng Jiang, Xia Li
Accumulating evidence has indicated that microRNA-181 (miR-181) is dysregulated in hematological malignancies, and associates with the clinical outcomes. However, the association of miR-181 expression levels with acute myeloid leukemia (AML) remains inconclusive, as publications from different groups have reported contradictory results. In this manuscript, a meta-analysis was performed to assess the prognostic significance of miR-181 in AML patients. Eligible studies were retrieved from PubMed, Embase and Cochrane Library databases, and a total of 6 studies including 815 AML patients were included in the final analysis...
July 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/28732368/meta-analysis-of-micrornas-expression-in-head-and-neck-cancer-uncovering-association-with-outcome-and-mechanisms
#3
Joshua Lubov, Mariana Maschietto, Iman Ibrahim, Alex Mlynarek, Michael Hier, Luiz Paulo Kowalski, Moulay A Alaoui-Jamali, Sabrina Daniela da Silva
Head and neck squamous cell carcinoma (HNSCC) is often diagnosed at advanced stages, incurring significant high mortality and morbidity. This review explored the risk stratification of miRNAs, and investigated the impact of miRNA networking in HNSCC prognostication. We performed a meta-analysis and a systematic literature search on online databases for papers published prior to December 1, 2016. The list of miRNAs was uploaded to MetacoreTM to construct a protein-protein interaction network, which was used to identify targets of the miRNAs and potential drugs...
July 13, 2017: Oncotarget
https://www.readbyqxmd.com/read/28730445/polycationic-probe-guided-nanopore-single-molecule-counter-for-selective-mirna-detection
#4
Kai Tian, Ruicheng Shi, Amy Gu, Michael Pennella, Li-Qun Gu
MicroRNAs (miRNAs) are a class of noncoding RNAs that are being explored as a new type of disease biomarkers. The nanopore single-molecule sensor offers a potential noninvasive tool to detect miRNAs for diagnostics and prognosis applications. However, one of the challenges that limits its clinical applications is the presence of a large variety of nontarget nucleic acids in the biofluid extracts. Upon interacting with the nanopore, nontarget nucleic acids produce "contaminative" nanopore signals that interfere with target miRNA discrimination, thus severely lowering the accuracy in target miRNA detection...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28729919/toward-understanding-non-coding-rna-roles-in-intracranial-aneurysms-and-subarachnoid-hemorrhage
#5
Fengzhen Huang, Jiping Yi, Tieqiao Zhou, Xiaoxiang Gong, Hong Jiang, Xiaoxi Yao
Subarachnoid hemorrhage (SAH) is a common and frequently life-threatening cerebrovascular disease, which is mostly related with a ruptured intracranial aneurysm. Its complications include rebleeding, early brain injury, cerebral vasospasm, delayed cerebral ischemia, chronic hydrocephalus, and also non neurological problems. Non-coding RNAs (ncRNAs), comprising of microRNAs (miRNAs), small interfering RNAs (siRNAs) and long non-coding RNAs (lncRNAs), play an important role in intracranial aneurysms and SAH. Here, we review the non-coding RNAs expression profile and their related mechanisms in intracranial aneurysms and SAH...
2017: Translational Neuroscience
https://www.readbyqxmd.com/read/28729721/plasma-derived-exosome-characterization-reveals-a-distinct-microrna-signature-in-long-duration-type-1-diabetes
#6
Marta Garcia-Contreras, Sanket H Shah, Alejandro Tamayo, Paul D Robbins, Ronald B Golberg, Armando J Mendez, Camillo Ricordi
Type 1 diabetes mellitus (T1DM) results from an autoimmune attack against the insulin-producing ß cells which leads to chronic hyperglycemia. Exosomes are lipid vesicles derived from cellular multivesicular bodies that are enriched in specific miRNAs, potentially providing a disease-specific diagnostic signature. To assess the value of exosome miRNAs as biomarkers for T1DM, miRNA expression in plasma-derived exosomes was measured. Nanoparticle tracking analysis and transmission electron microscopy confirmed the presence of plasma-derived exosomes (EXOs) isolated by differential centrifugation...
July 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28729029/impact-of-micrornas-in-the-cellular-response-to-hypoxia
#7
Thomas Bertero, Roger Rezzonico, Nicolas Pottier, Bernard Mari
In mammalian cells, hypoxia, or inadequate oxygen availability, regulates the expression of a specific set of MicroRNAs (MiRNAs), termed "hypoxamiRs." Over the past 10 years, the appreciation of the importance of hypoxamiRs in regulating the cellular adaptation to hypoxia has grown dramatically. At the cellular level, each hypoxamiR, including the master hypoxamiR MiR-210, can simultaneously regulate expression of multiple target genes in order to fine-tune the adaptive response of cells to hypoxia. This review addresses the complex molecular regulation of MiRNAs in both physiological and pathological conditions of low oxygen adaptation and the multiple functions of hypoxamiRs in various hypoxia-associated biological processes, including apoptosis, survival, proliferation, angiogenesis, inflammation, and metabolism...
2017: International Review of Cell and Molecular Biology
https://www.readbyqxmd.com/read/28729027/micrornas-as-multifaceted-players-in-glioblastoma-multiforme
#8
Neri Mercatelli, Silvia Galardi, Silvia Anna Ciafrè
Glioblastoma multiforme (GBM) is the most common and inevitably lethal primary brain tumor, with a median survival rate of only 15 months from diagnosis. The current standard treatment involves maximal surgical resection flanked by radiotherapy and chemotherapy with the alkylating agent temozolomide. However, even such aggressive treatment is never curative, and recurrent tumors always arise, commonly in more aggressive, chemo- and radio-resistant forms, leading to untreatable and deadly tumors. MicroRNAs, recognized major players in cancer, are deeply involved in GBM, as shown by more than a decade of studies...
2017: International Review of Cell and Molecular Biology
https://www.readbyqxmd.com/read/28727756/dysregulation-of-micrornas-and-renin-angiotensin-system-in-high-salt-diet-induced-cardiac-dysfunction-in-uninephrectomized-rats
#9
Venkateswara Rao Amara, Sunil Kumar Surapaneni, Kulbhushan Tikoo
Uninephrectomy is not associated with major adverse events in cardiovascular and renal functions of live kidney donors. The effect of high salt diet on the quality of life of live kidney donors is largely unknown. Hence in this study, we aimed to determine the effect of high salt diet on the alterations of renin-angiotensin system and microRNAs leading to CV and renal dysfunction in uninephrectomized rats. In order to mimic clinical scenario, uninephrectomized male Sprague Dawley rats were fed initially with normal pellet diet for 12 weeks and then for 20 weeks with high salt (10% w/w NaCl) diet...
2017: PloS One
https://www.readbyqxmd.com/read/28727754/dysregulation-of-endothelial-colony-forming-cell-function-by-a-negative-feedback-loop-of-circulating-mir-146a-and-146b-in-cardiovascular-disease-patients
#10
Ting-Yu Chang, Wei-Chi Tsai, Tse-Shun Huang, Shu-Han Su, Chih-Young Chang, Hsiu-Yen Ma, Chun-Hsien Wu, Chih-Yung Yang, Chi-Hung Lin, Po-Hsun Huang, Cheng-Chung Cheng, Shu-Meng Cheng, Hsei-Wei Wang
Functional impairment of endothelial colony-forming cells (ECFCs), a specific cell lineage of endothelial progenitor cells (EPCs) is highly associated with the severity of coronary artery disease (CAD), the most common type of cardiovascular disease (CVD). Emerging evidence show that circulating microRNAs (miRNAs) in CAD patients' body fluid hold a great potential as biomarkers. However, our knowledge of the role of circulating miRNA in regulating the function of ECFCs and the progression of CAD is still in its infancy...
2017: PloS One
https://www.readbyqxmd.com/read/28727412/a-novel-host-guest-recognition-assisted-electrochemical-release-its-reusable-sensing-application-based-on-dna-cross-configuration-fueled-target-cycling-and-sdr-amplification
#11
Yuanyuan Chang, Ying Zhuo, Yaqin Chai, Ruo Yuan
In this work, an elegantly designed host-guest recognition-assisted electrochemical release was established and applied in a reusable electrochemical biosensor for the detection of microRNA-182-5p (miRNA-182-5p), a prostate cancer biomarker in prostate cancer, based on the DNA cross configuration-fueled target cycling and strand displacement reaction (SDR) amplification. With such design, the single target miRNA input could be converted to large numbers of single-stranded DNA (S1-Trp and S2-Trp) output which could be trapped by cucurbit[8]uril-methyl viologen (CB-8-MV2+) based on the host-guest recognition, significantly enhancing the sensitivity for miRNA detection...
July 20, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28727188/mir-21-a-key-player-in-glioblastoma-pathogenesis
#12
Mohammad Sadegh Masoudi, Emadodin Mehrabian, Hamed Mirzaei
Glioblastoma multiform (GBM) is one of common cancers worldwide which has high rate among various populations. Despite serious efforts worldwide, GBM remains a deadly disease which is associated with poor prognosis. Multiple lines evidence indicated that deregulation of a variety of cellular and molecular pathways are related with GBM pathogenesis. Among of various targets involved in GBM pathogenesis, microRNAs (miRNAs) have been emerged as targets which deregulation of them are related with various stages of GBM...
July 20, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28725635/implications-of-micrornas-in-oncolytic-virotherapy
#13
REVIEW
Xavier Bofill-De Ros, Maria Rovira-Rigau, Cristina Fillat
MicroRNAs (miRNAs) are an abundant class of small non-coding RNA molecules (~22 nt) that can repress gene expression. Deregulation of certain miRNAs is widely recognized as a robust biomarker for many neoplasms, as well as an important player in tumorigenesis and the establishment of tumoral microenvironments. The downregulation of specific miRNAs in tumors has been exploited as a mechanism to provide selectivity to oncolytic viruses or gene-based therapies. miRNA response elements recognizing miRNAs expressed in specific tissues, but downregulated in tumors, have been inserted into the 3'UTR of viral genes to promote the degradation of these viral mRNAs in healthy tissue, but not in tumor cells...
2017: Frontiers in Oncology
https://www.readbyqxmd.com/read/28724745/seq-identifies-circulating-mir-125a-5p-mir-125b-5p-and-mir-143-3p-as-potential-biomarkers-for-acute-ischemic-stroke
#14
Steffen Tiedt, Matthias Prestel, Rainer Malik, Nicola Schieferdecker, Marco Düring, Veronika Kautzky, Ivelina Stoycheva, Julia Böck, Bernd H Northoff, Matthias Klein, Franziska Dorn, Knut Krohn, Daniel Teupser, Arthur Liesz, Nikolaus Plesnila, Lesca M Holdt, Martin Dichgans
Rationale: Currently, there are no blood-based biomarkers with clinical utility for acute ischemic stroke (IS). microRNAs (miRNAs) show promise as disease markers due to their cell-type specific expression patterns and stability in peripheral blood. Objective: To identify circulating miRNAs associated with acute IS, determine their temporal course up to 90 days post-stroke, and explore their utility as an early diagnostic marker. Methods and Results: We used RNA sequencing to study expression changes of circulating miRNAs in a discovery sample of 20 IS patients and 20 matched healthy control subjects (HCs)...
July 19, 2017: Circulation Research
https://www.readbyqxmd.com/read/28723162/ultrasensitive-detection-of-cancer-prognostic-mirna-biomarkers-based-on-surface-plasmon-enhanced-light-scattering
#15
Chih-Tsung Yang, Mohammad Pourhassan-Moghaddam, Lin Wu, Ping Bai, Benjamin Thierry
The development of simple yet ultrasensitive biosensing approaches for the detection of cancer prognostic microRNA is an important step toward their successful clinical implementation. We demonstrate the relevance for the detection of circulating miRNA of a novel signal amplification scheme based on surface plasmon resonance enhanced light scattering (SP-LS). In addition to experimental optimization carried out using gold nanoparticle (AuNP) tags conjugated with a monoclonal antibody with high affinity for RNA*DNA hybrid duplexes, simulation modeling was conducted to obtain insights about SP-LS biosensing...
May 26, 2017: ACS Sensors
https://www.readbyqxmd.com/read/28722665/mirna-and-lncrna-as-biomarkers-in-cholangiocarcinoma-cca
#16
REVIEW
Bo Zheng, Seogsong Jeong, Yanjing Zhu, Lei Chen, Qiang Xia
The microRNAs are a group of 20 nucleotides-long non-coding RNAs. By binding to the 3'UTR region of target mRNA, microRNAs can perform extensive actions mediating gene expression at post-trancriptional stages. It makes microRNAs serve as very crucial regulators in various biological progress including carcinogenesis. Long non-coding RNAs, however, are a subgroup of RNA with the length of 200 nucleotides. Unlike microRNAs, long non-coding RNAs can form secondary of tertiary domain based on their length. With the ability of directly interacting with DNA, RNA, protein, long non-coding RNAs have promoting or inhibitive functions in gene expression regulation...
July 6, 2017: Oncotarget
https://www.readbyqxmd.com/read/28722268/downregulation-of-microrna-15a-3p-is-correlated-with-clinical-outcome-and-negatively-regulates-cancer-proliferation-and-migration-in-human-osteosarcoma
#17
Jiyuan Shi, Qiang Fu, Pei Yang, Huitong Liu, Le Ji, Kunzheng Wang
BACKGROUND: In this study, we investigated the expression, correlation to clinical outcomes and biological functions of microRNA-15a-3p (miR-15a-3p) in human osteosarcoma. METHODS: MiR-15a-3p expressions in osteosarcoma cell lines and clinical tissues of osteosarcoma patients were measured by qPCR. Relevance of endogenous miR-15a-3p to osteosarcoma patients' clinicopathological factors or overall survival was statistically analyzed. In addition, the independence of miR-15a-3p predicting cancer patients' overall survival was analyzed by Cox regression method...
July 19, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28721912/exosomes-and-exosomal-micrornas-in-prostate-cancer-radiation-therapy
#18
REVIEW
Bijaya Malla, Kathrin Zaugg, Erik Vassella, Daniel M Aebersold, Alan Dal Pra
Despite current risk stratification systems using traditional clinicopathologic factors, many localized and locally advanced prostate cancers fail radical treatment (ie, radical prostatectomy, radiation therapy with or without androgen deprivation therapy). Therefore, a pressing need exists for enhanced methods of disease stratification through novel prognostic and predictive tools that can reliably be applied in clinical practice. Exosomes are 50- to 150-nm small vesicles released by cancer cells that reflect the genetic and nongenetic materials of parent cancer cells...
August 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28721656/circrna-a-novel-type-of-biomarker-for-cancer
#19
REVIEW
He-da Zhang, Lin-Hong Jiang, Da-Wei Sun, Jun-Chen Hou, Zhen-Ling Ji
Circular RNAs (circRNAs) are a class of long, non-coding RNAs molecules that shape a covalently closed continuous loop which have no 5'-3' polarity and contain no polyA tail. CircRNAs also possess relatively jarless framework and are highly tissue-specific expressed in the eukaryotic transcriptome. Emerging evidences have discovered that thousands of endogenous circRNAs are present in mammalian cells and they mediate gene expression at the transcriptional or post-transcriptional level by binding to microRNAs or other molecules and then inhibit their function...
July 18, 2017: Breast Cancer: the Journal of the Japanese Breast Cancer Society
https://www.readbyqxmd.com/read/28720759/depleted-tumor-suppressor-mir-107-in-plasma-relates-to-tumor-progression-and-is-a-novel-therapeutic-target-in-pancreatic-cancer
#20
Taisuke Imamura, Shuhei Komatsu, Daisuke Ichikawa, Mahito Miyamae, Wataru Okajima, Takuma Ohashi, Jun Kiuchi, Keiji Nishibeppu, Hirotaka Konishi, Atsushi Shiozaki, Ryo Morimura, Hisashi Ikoma, Toshiya Ochiai, Kazuma Okamoto, Hiroki Taniguchi, Eigo Otsuji
This study explored decreased tumor suppressor microRNA (miRNA) plasma levels in pancreatic cancer (PCa) patients to clarify their potential as novel biomarkers and therapeutic targets. We used the microRNA array-based approach to select candidates by comparing plasma levels between PCa patients and healthy volunteers. Six down-regulated miRNAs (miR-107, miR-126, miR-451, miR-145, miR-491-5p, and miR-146b-5p) were selected. Small- and large-scale analyses using samples from 100 PCa patients and 80 healthy volunteers revealed that miR-107 was the most down-regulated miRNA in PCa patients compared with healthy volunteers (P < 0...
July 18, 2017: Scientific Reports
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