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https://www.readbyqxmd.com/read/29458177/colorimetric-detection-of-microrna-based-on-dnazyme-and-nuclease-assisted-catalytic-hairpin-assembly-signal-amplification
#1
Hongmei Zhang, Kuiyu Wang, Shengjun Bu, Zhongyi Li, Chuanjing Ju, Jiayu Wan
Accurate and quantitative analysis of microRNA (miRNA) expression is critical for the diagnostics and theranostics of a disease. Herein, a proof-of-concept of a colorimetric horseradish peroxidase-mimicking DNAzyme (HRP-DNAzyme) biosensor for miRNA assay based on nuclease-assisted catalytic hairpin assembly (CHA) signal amplification was demonstrated. Duplex-specific nuclease (DSN) was employed to cleave the single-stranded DNA (ssDNA) chimeric probe (CP) on the magnetic bead (MB) surface via hybridization of the CP and target miRNA...
February 16, 2018: Molecular and Cellular Probes
https://www.readbyqxmd.com/read/29458020/circrna-circ_0067934-promotes-tumor-growth-and-metastasis-in-hepatocellular-carcinoma-through-regulation-of-mir-1324-fzd5-wnt-%C3%AE-catenin-axis
#2
Qian Zhu, Guiyu Lu, Zihua Luo, Fenfang Gui, Jinghua Wu, Dongwei Zhang, Yong Ni
Recently, increasing evidences demonstrate that circular RNAs (circRNAs) exert very important functions in the progression of human cancers. However, the functions and molecular mechanism of circ_0067934 in hepatocellular carcinoma (HCC) are largely unknown. In the present study, we found that the expression of circ_0067934 was significantly upregulated in HCC tissues and cell lines compared to adjacent normal tissues. Furthermore, we showed that circ_0067934 knockdown remarkably suppressed the proliferation, migration and invasion of Hep3B and HuH7 cells while inducing their apoptosis...
February 16, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29458013/ago2-rna-immunoprecipitation-reveals-distinct-mirna-targetomes-of-primary-burkitt-lymphoma-tumors-and-normal-b-cells
#3
Agnieszka Dzikiewicz-Krawczyk, Arjan Diepstra, Bea Rutgers, Gertrud Kortman, Debora de Jong, Jasper Koerts, Marian Bulthuis, Tineke van der Sluis, Annika Seitz, Lydia Visser, Klaas Kok, Joost Kluiver, Anke van den Berg
MicroRNAs (miRNAs) are small noncoding RNAs involved in the posttranscriptional regulation of gene expression. Deregulated miRNA levels have been linked to Burkitt lymphoma (BL) pathogenesis. To date, the number of known pathogenesis-related miRNA-target gene interactions is limited. Here, we determined for the first time the miRNA targetomes of primary BL tumors and normal B cells. AGO2-RNA immunoprecipitation (AGO2-RIP) of two frozen diagnostic BL tissue samples and three CD19+ B-cell samples isolated from routinely removed tonsils revealed distinct miRNA targetomes of BL and normal B cells...
February 16, 2018: American Journal of Pathology
https://www.readbyqxmd.com/read/29457851/suppression-of-microrna-144-3p-attenuates-oxygen-glucose-deprivation-reoxygenation-induced-neuronal-injury-by-promoting-brg1-nrf2-are-signaling
#4
Yanru Li, Yongli Zhao, Mingkun Cheng, Yingjie Qiao, Yongtao Wang, Wancheng Xiong, Wei Yue
Accumulating evidence has reported that microRNA-144-3p (miR-144-3p) is highly related to oxidative stress and apoptosis. However, little is known regarding its role in cerebral ischemia/reperfusion-induced neuronal injury. Herein, our results showed that miR-144-3p expression was significantly downregulated in neurons following oxygen-glucose deprivation and reoxygenation (OGD/R) treatment. Overexpression of miR-144-3p markedly reduced cell viability, promoted cell apoptosis, and increased oxidative stress in neurons with OGD/R treatment, whereas downregulation of miR-144-3p protected neurons against OGD/R-induced injury...
February 19, 2018: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/29457830/mirna-124-3p-neuropilin-1-nrp-1-axis-plays-an-important-role-in-mediating-glioblastoma-growth-and-angiogenesis
#5
Guilong Zhang, Lukui Chen, Ahsan Ali Khan, Bingqian Li, Bin Gu, Fan Lin, Xinhui Su, Jianghua Yan
Glioblastoma Multiforme (GBM) is the most lethal brain malignancy which involves multi-gene abnormality. Unfortunately, effective therapy against GBM is still lacking. Previously, we found that NRP-1 and its downstream NRP-1/GIPC1 pathway played an important role in GBM. In this study, we further investigated the upstream signaling of NRP-1 to understand how it is regulated. Firstly, we identified that hsa-miR-124-3p was miRNA differentially expressed in GBM and in normal brain tissues by high-throughput sequencing...
February 19, 2018: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/29457789/a-common-variant-alters-scn5a-mir-24-interaction-and-associates-with-heart-failure-mortality
#6
Xiaoming Zhang, Jin-Young Yoon, Michael Morley, Jared M McLendon, Kranti A Mapuskar, Rebecca Gutmann, Haider Mehdi, Heather L Bloom, Samuel C Dudley, Patrick T Ellinor, Alaa A Shalaby, Raul Weiss, W H Wilson Tang, Christine S Moravec, Madhurmeet Singh, Anne L Taylor, Clyde W Yancy, Arthur M Feldman, Dennis M McNamara, Kaikobad Irani, Douglas R Spitz, Patrick Breheny, Kenneth B Margulies, Barry London, Ryan L Boudreau
SCN5A encodes the voltage-gated Na+ channel NaV1.5 that is responsible for depolarization of the cardiac action potential and rapid intercellular conduction. Mutations disrupting the SCN5A coding sequence cause inherited arrhythmias and cardiomyopathy, and single-nucleotide polymorphisms (SNPs) linked to SCN5A splicing, localization, and function associate with heart failure-related sudden cardiac death. However, the clinical relevance of SNPs that modulate SCN5A expression levels remains understudied. We recently generated a transcriptome-wide map of microRNA (miR) binding sites in human heart, evaluated their overlap with common SNPs, and identified a synonymous SNP (rs1805126) adjacent to a miR-24 site within the SCN5A coding sequence...
February 19, 2018: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29457788/scn5a-the-greatest-hits-collection
#7
David S Park, Glenn I Fishman
Heart failure (HF) has been referred to as the cardiovascular epidemic of our time. Understanding the molecular determinants of HF disease progression and mortality risk is of utmost importance. In this issue of the JCI, Zhang et al. uncover an important link between clinical HF mortality risk and a common variant that regulates SCN5A expression through microRNA-dependent (miR-dependent)mechanisms. They also demonstrate that haploinsufficiency of SCN5A is associated with increased accumulation of reactive oxygen species (ROS) in a genetically engineered murine model...
February 19, 2018: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29457550/mir-505-3p-controls-chemokine-receptor-up-regulation-in-macrophages-role-in-familial-hypercholesterolemia
#8
Rafael Escate, Pedro Mata, Jose Maria Cepeda, Teresa Padró, Lina Badimon
Familial hypercholesterolemia (FH) conveys a high risk of premature atherosclerosis as a result of lifelong exposure to high LDL cholesterol levels that are not fully reduced by standard-of-care lipid-lowering treatment. Inflammatory mediators have played a role in the progression of atherosclerotic lesions. Here, we investigated whether innate immunity cells in patients with FH have a specific proinflammatory phenotype that is distinct from that of cells in normal participants. To this end, miR-505-3p-a microRNA related to chronic inflammation-and its target genes were investigated in monocyte-derived macrophages (MACs) of patients with FH (FH-MACs) and non-FH controls (co-MACs)...
February 2018: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29457379/levels-of-cytokines-and-micrornas-in-individuals-with-asymptomatic-hyperuricemia-and-ultrasonographic-findings-of-gout-a-bench-to-bedside-approach
#9
Irving O Estevez-Garcia, Selma Gallegos-Nava, Erika Vera-Pérez, Luis H Silveira, Lucio Ventura-Ríos, Gonzalo Vancini, Cristina Hernández-Díaz, Fausto Sánchez-Muñoz, Martha A Ballinas-Verdugo, Marwin Gutierrez, Carlos Pineda, Pedro Rodriguez-Henriquez, Diana Castillo-Martínez, Luis M Amezcua-Guerra
OBJECTIVE: To assess potential associations among serum cytokines and microRNA (miR) levels with ultrasound (US) findings suggestive of urate deposits in chronic asymptomatic hyperuricemia and gout. METHODS: All participants underwent musculoskeletal US and measurements of serum IL-1β, IL-2, IL-4, IL-5, IL-6, IL-8, IL-10, IL-12, IL-13, IFN-γ, TNF, MCP-1, and ENA-78, as well as miR-146a, miR-155, and miR-223 levels. RESULTS: Thirty individuals with asymptomatic hyperuricemia, 31 normouricemic controls, and 30 gouty patients were included...
February 18, 2018: Arthritis Care & Research
https://www.readbyqxmd.com/read/29457293/ginsenoside-rh2-inhibits-prostate-cancer-cell-growth-through-suppression-of-microrna-4295-that-activates-cdkn1a
#10
Qiruo Gao, Junhua Zheng
OBJECTIVES: Ginsenoside Rh2 (GRh2) has demonstrative therapeutic effects on a variety of diseases, including some tumours. However, the effects of GRh2 on prostate cancer (PC) cell growth remain unknown, and were, thus, addressed in the present study. MATERIALS AND METHODS: PC3 and DU145 PC cell lines were exposed to GRh2. Cell proliferation was assessed in an MTT assay and by BrdU incorporation. Apoptosis of the cells were assessed by TUNEL staining. Total RNA was assessed by RT-qPCR...
February 19, 2018: Cell Proliferation
https://www.readbyqxmd.com/read/29456988/effect-of-twine-arginine-translocation-signaling-fusion-system-and-chaperones-co-expression-on-secretory-expression-of-somatropin
#11
Mohammad Reza Bagherinejad, Hamid Mir-Mohammad Sadeghi, Daryoush Abedi, Fateme Moazen, Mohammad Rabbani
Background: Twine-arginine translocation (TAT) system is one of the exporting systems in Escherichia coli which could transport fully/semi-correctly folded proteins outside the reductive cytoplasmic space. In combination with co-expression with a chaperone system, the correctly folded proteins could be transported to oxidative periplasmic space and culture media to pass the main limitations in E. coli expression system such as misfolding and inclusion body formation. Materials and Methods: To study the effectiveness of signaling sequences and chaperone co-expression on the translocation of expressed protein, somatropin was selected as the target...
2018: Advanced Biomedical Research
https://www.readbyqxmd.com/read/29456985/evaluation-of-mir-21-inhibition-and-its-impact-on-cancer-susceptibility-candidate-2-long-noncoding-rna-in-colorectal-cancer-cell-line
#12
Miganoosh Simonian, Mohammadreza Sharifi, Reza Nedaeinia, Meysam Mosallaie, Sharifeh Khosravi, Amir Avan, Majid Ghayour-Mobarhan, Hadi Bagheri, Rasoul Salehi
Background: Both microRNAs (miRNAs) and long noncoding RNAs (lncRNAs) have been shown to have a critical role in the regulation of cellular processes such as cell growth and apoptosis, as well as cancer progression and metastasis. lncRNAs are aberrantly expressed in many diseases including cancer. Although it is well known that miRNAs can target a large number of protein-coding genes, little is known whether miRNAs can also target lncRNAs. In the present study, we determine whether miR-21 can regulate lncRNA cancer susceptibility candidate 2 (CASC2) in colorectal cancer...
2018: Advanced Biomedical Research
https://www.readbyqxmd.com/read/29456742/mir302a-inhibits-the-proliferation-of-esophageal-cancer-cells-through-the-mapk-and-pi3k-akt-signaling-pathways
#13
Daokui Xia, Shumei Tian, Zhen Chen, Wenchao Qin, Quan Liu
MicroRNAs (miRNAs/miRs) are involved in the regulation of various types of cancer, either as oncogenes or tumor suppressors. miR302a has been reported that it could suppress tumor cell proliferation by inhibiting Akt in prostate cancer. The present study examined the effect of miR302a on proliferation and invasion in esophageal cancer cell lines. The expression levels of miR302a in esophageal cancer cell lines was determined by reverse transcription-polymerase chain reaction. Subsequently, miR302a mimics were transfected into esophageal cancer cells, and cell viability and invasion were assessed by MTT and Transwell assays...
March 2018: Oncology Letters
https://www.readbyqxmd.com/read/29456730/the-regulation-and-function-of-microrna-377-rassf8-signaling-axis-in-gastric-cancer
#14
Xiaobo Bo, Yusheng Chen, Weizhong Sheng, Yuda Gong, Haiyu Wang, Weidong Gao, Bo Zhang
Gastric cancer is a major cause of cancer-associated mortality worldwide. The aberrant expression of microRNA (miRNA) is involved in tumorigenesis. Ras proteins transfer information from the extracellular environment to internal cellular compartments and are essential in numerous signal transduction pathways. To investigate the regulation, function and clinical significance of the miRNA377/Ras association domain family (RASSF) 8 signaling axis in gastric cancer, reverse transcription-quantitative polymerase chain reaction, immunohistochemistry, cell counting kit-8, western blotting, and Transwell assays were used...
March 2018: Oncology Letters
https://www.readbyqxmd.com/read/29456728/values-of-mir-34a-and-mir-218-expression-in-the-diagnosis-of-cervical-cancer-and-the-prediction-of-prognosis
#15
Ping Wang, Guanyun Zhai, Yunyan Bai
The expression levels of microribonucleic acid 34a (miR-34a) and miR-218 in the serum and tumor tissues of patients with cervical cancer were investigated to explore their relationship with the diagnosis of cervical cancer. Fifty patients with cervical cancer were selected, and 30 normal patients were selected as the control group. The expression levels of miR-34a and miR-218 were detected by quantitative real-time polymerase chain reaction. The relationship between the expression of miR-34a and miR-218 was analyzed using Pearson's correlation coefficient, and the receiver operating characteristic (ROC) curve was plotted for the analysis of values of the expression of miR-34a and miR-218...
March 2018: Oncology Letters
https://www.readbyqxmd.com/read/29456723/mir-96-promotes-breast-cancer-metastasis-by-suppressing-mtss1
#16
Wei Xie, Feng Sun, Lin Chen, Xinjian Cao
Novel, non-invasive biomarkers with high sensitivity and specificity are critical for breast cancer treatment, and prognosis. MicroRNA (miR)-96 has been demonstrated to be highly expressed in several solid malignancies, including breast cancer. However, its expression and function in the metastasis and prognosis of breast cancer have not been fully explored, and its regulation mechanisms remain unclear. In the present study, the serum miR-96 expression in healthy controls, benign and malignant breast cancer types was compared by using reverse transcription-quantitative polymerase chain reaction...
March 2018: Oncology Letters
https://www.readbyqxmd.com/read/29456720/mir-494-inhibits-cervical-cancer-cell-proliferation-through-upregulation-of-socs6-expression
#17
Lei Cheng, Beihua Kong, Ying Zhao, Jie Jiang
It is unclear how microRNA (miR)-494 inhibits the proliferation of cervical cancer cells by altering the expression of SOCS6. Therefore, the present study aimed to investigate the molecular mechanism underlying miR-494 regulation of suppressor of cytokine signaling 6 (SOCS6) in human cervical cancer samples and the human cervical cancer HeLa cell line. The expression of miR-494 was determined using reverse transcription-quantitative polymerase chain reaction. In addition, TargetScan was used to predict miR-494 target genes and the luciferase reporter assay was used to determine whether SOCS6 was a direct target of miR-494...
March 2018: Oncology Letters
https://www.readbyqxmd.com/read/29456712/microrna-144-functions-as-a-tumor-suppressor-in-gastric-cancer-by-targeting-cyclooxygenase-2
#18
Qiang Yao, Anxin Gu, Zhuozhong Wang, Yingwei Xue
Gastric cancer (GC) poses a serious public health threat and the 5-year survival rate of patients with GC is low. MicroRNAs (miRNAs/miRs) may serve oncogenic or tumor suppressor functions during tumorigenesis by regulating cell proliferation, apoptosis, migration and invasion and it has been demonstrated that they may be dysregulated in various types of cancer. The present study demonstrated that miR-144 and GATA4 were downregulated in GC tissues and cell lines and suggested that this may be due to hypermethylation...
March 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29456688/overexpression-of-microrna-506-3p-aggravates-the-injury-of-vascular-endothelial-cells-in-patients-with-hypertension-by-downregulating-beclin1-expression
#19
Fanfan Yi, Yugui Hao, Xiaoyi Chong, Wei Zhong
The aim of the present study was to measure the expression of microRNA (miRNA)-506-3p in the peripheral blood of patients with hypertension and to determine the biological functions and mechanisms of action of miR-506-3p. A total of 61 patients with primary hypertension were included in the present study. Peripheral blood was collected from all patients, as well as 31 healthy subjects who were included in a control group. The expression of miR-506-3p in peripheral blood was determined by reverse transcription-quantitative polymerase chain reaction...
March 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29456685/mir-372-promotes-breast-cancer-cell-proliferation-by-directly-targeting-lats2
#20
Xueyuan Cheng, Junqiang Chen, Zhong Huang
MicroRNAs (miRs) have previously been demonstrated to be important in the tumorigenesis and progression of breast cancer. miR-372 was previously revealed to be involved in various types of human cancer, however its function in breast cancer remains largely unknown. The present study demonstrated that miR-372 is frequently overexpressed in breast cancer cell lines and tissues. The downregulation of miR-372 markedly inhibited cell proliferation, arrested the cell cycle in the G1/S phase, and increased the apoptosis of breast cancer cells...
March 2018: Experimental and Therapeutic Medicine
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