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https://www.readbyqxmd.com/read/28437884/regulatory-role-of-mir-211-5p-in-hepatocellular-carcinoma-metastasis-by-targeting-zeb2
#1
Guangbin Jiang, Li Wen, Weiping Deng, Zhiyuan Jian, Hongmei Zheng
Hepatocellular carcinoma (HCC) is the most common type of cancer and the rapid tumor growth, drug resistance and metastasis are the major problems for HCC therapy. MicroRNAs (miRNAs) involve in various cell biological processes in HCC. ZEB2 plays crucial roles in HCC progression. ZEB2 is regulated by some identified miRNAs, but there needs to find new miRNAs regulating ZEB2 expression for better understanding the molecular mechanism of HCC. In the present study, ZEB2 was identified as a direct target of miR-211-5p, which was a potential oncogene in cancer...
April 19, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28437838/prognostic-relevance-of-mir-124-3p-and-its-target-tp53inp1-in-pediatric-ependymoma
#2
Yulia Margolin-Miller, Natalia Yanichkin, Keren Shichrur, Helen Toledano, Anat Ohali, Theophilos Tzaridis, Shalom Michowitz, Suzana Fichman-Horn, Meora Feinmesser, Stefan M Pfister, Hendrik Witt, Uri Tabori, Eric Bouffet, Vijay Ramaswamy, Cynthia Hawkins, Michael D Taylor, Isaac Yaniv, Smadar Avigad
Ependymoma is a malignant pediatric brain tumor, often incurable under the current treatment regimen. We aimed to evaluate the expression of microRNAs (miRs) in pediatric ependymoma tumors in an attempt to identify prognostic molecular markers which would lead to potential therapeutic targets. Following miR-array expression analysis, we focused on 9 miRs that correlated with relapse which were further validated by quantitative real time PCR (qRT-PCR) in a cohort of 67 patients. Western blotting and immunohistochemistry were used to measure target protein expression in 20 and 34 tumor samples, respectively...
April 24, 2017: Genes, Chromosomes & Cancer
https://www.readbyqxmd.com/read/28437675/whole-blood-sequencing-reveals-circulating-microrna-associations-with-high-risk-traits-in-non-st-segment-elevation-acute-coronary-syndrome
#3
Alice Wang, Lydia Coulter Kwee, Elizabeth Grass, Megan L Neely, Simon G Gregory, Keith A A Fox, Paul W Armstrong, Harvey D White, E Magnus Ohman, Matthew T Roe, Svati H Shah, Mark Y Chan
BACKGROUND AND AIMS: Although circulating microRNA (miRNAs) have emerged as biomarkers predicting mortality in acute coronary syndrome (ACS), more data are needed to understand these mechanisms. Mapping miRNAs to high-risk traits may identify miRNAs involved in pathways conferring risk for poor outcome in ACS. We aim to investigate the relationship between circulating miRNAs and high-risk traits in non-ST-segment elevation acute coronary syndrome (NSTE-ACS). METHODS: Whole-genome miRNA sequencing was performed on RNA extracted from whole blood of 199 patients with NSTE-ACS...
March 30, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28437633/microrna-500a-promotes-migration-and-invasion-in-hepatocellular-carcinoma-by-activating-the-wnt-%C3%AE-catenin-signaling-pathway
#4
Yuntao Guo, Liwen Chen, Chengyi Sun, Chao Yu
Increased expression of microRNA-500a (miR-500a) has been reported in the serum of hepatocellular carcinoma (HCC) patients. However, the biological effects and mechanisms of miR-500a in hepatoma cells remain unclear. In this study, we found that miR-500a expression was up-regulated in HCC cell lines and tissues, and that high levels of miR-500a was associated with poor prognosis. We found that miR-500a upregulation promoted migration and invasion in two hepatoma cell lines, HCCLM3 and SMMC7721, while miR-500a downregulation had the opposite effect...
April 21, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28437471/mir-217-inhibits-triple-negative-breast-cancer-cell-growth-migration-and-invasion-through-targeting-klf5
#5
Wenhui Zhou, Fangfang Song, Qiuju Wu, Rong Liu, Lulu Wang, Cuicui Liu, You Peng, Shuqin Mao, Jing Feng, Ceshi Chen
Triple negative breast cancer (TNBC) is one of the most aggressive breast cancers without effective targeted therapies. Numerous studies have implied that KLF5 plays an important roles in TNBC. How is KLF5 regulated by microRNAs has not been well studied. Here, we demonstrated that miR-217 down-regulates the expression of KLF5 and KLF5's downstream target gene FGF-BP and Cyclin D1 in TNBC cell lines HCC1806 and HCC1937. Consequently, miR-217 suppresses TNBC cell growth, migration, and invasion. MiR-217 suppresses TNBC, at least partially, through down-regulating the KLF5 expression...
2017: PloS One
https://www.readbyqxmd.com/read/28437377/microrna-21-is-required-for-local-and-remote-ischemic-preconditioning-in-multiple-organ-protection-against-sepsis
#6
Ping Jia, Xiaoli Wu, Yan Dai, Jie Teng, Yi Fang, Jiachang Hu, Jianzhou Zou, Mingyu Liang, Xiaoqiang Ding
OBJECTIVE: Sepsis, triggered by microbial infection, is a common and life-threatening systemic illness, often leads to impaired function of vital organs. Ischemic preconditioning induced by transient brief episodes of ischemia is a powerful innate mechanism of organ protection. We have reported that a 15-minute renal ischemic preconditioning substantially attenuated subsequent renal ischemia-reperfusion injury. Here, we investigate whether a brief ischemia and reperfusion in kidney can provide protection at local and remote sites against sepsis-induced organ injury, and whether this protection is microRNA-21 dependent...
April 21, 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/28437357/the-effect-of-concomitant-rib-deformity-in-congenital-scoliosis-on-spinal-curve-correction-after-segmental-pedicle-screw-instrumentation
#7
Ebrahim Ameri, Daniel F Fouladi, Mir Bahram Safari, Hossein Vahid Tari, Hassan Ghandhari
STUDY DESIGN: A single-center, prospective study. OBJECTIVE: To investigate the effect of rib anomaly on surgical curve correction outcome in congenital scoliosis. SUMMARY OF BACKGROUND DATA: The presence of rib anomalies may complicate surgical correction of congenital scoliosis. The outcome of surgical correction, however, has not been documented in scoliotic patients with and without rib deformity. METHODS: Percent Cobb angle decrease (CAD) after operation was calculated in 94 patients with congenital scoliosis...
May 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28437065/a-macrocyclic-peptide-ligand-binds-the-oncogenic-microrna-21-precursor-and-suppresses-dicer-processing
#8
Matthew D Shortridge, Matthew J Walker, Tom Pavelitz, Yu Chen, Gabriele Varani
MicroRNAs (miRNAs) help orchestrate cellular growth and survival through post-transcriptional mechanisms. The dysregulation of miRNA biogenesis can lead to cellular growth defects, chemotherapeutic resistance and plays a direct role in the development of many chronic diseases. Among these RNAs, miR-21 is consistently overexpressed in most human cancers leading to the down regulation of key tumor suppressing and pro-apoptotic factors; suggesting that inhibition of miR-21 biogenesis could reverse these negative effects...
April 24, 2017: ACS Chemical Biology
https://www.readbyqxmd.com/read/28436968/metabolic-control-of-primed-human-pluripotent-stem-cell-fate-and-function-by-the-mir-200c-sirt2-axis
#9
Young Cha, Min-Joon Han, Hyuk-Jin Cha, Janet Zoldan, Alison Burkart, Jin Hyuk Jung, Yongwoo Jang, Chun-Hyung Kim, Ho-Chang Jeong, Byung-Gyu Kim, Robert Langer, C Ronald Kahn, Leonard Guarente, Kwang-Soo Kim
A hallmark of cancer cells is the metabolic switch from oxidative phosphorylation (OXPHOS) to glycolysis, a phenomenon referred to as the 'Warburg effect', which is also observed in primed human pluripotent stem cells (hPSCs). Here, we report that downregulation of SIRT2 and upregulation of SIRT1 is a molecular signature of primed hPSCs and that SIRT2 critically regulates metabolic reprogramming during induced pluripotency by targeting glycolytic enzymes including aldolase, glyceraldehyde-3-phosphate dehydrogenase, phosphoglycerate kinase, and enolase...
April 24, 2017: Nature Cell Biology
https://www.readbyqxmd.com/read/28436951/hypoxic-lung-cancer-secreted-exosomal-mir-23a-increased-angiogenesis-and-vascular-permeability-by-targeting-prolyl-hydroxylase-and-tight-junction-protein-zo-1
#10
Y-L Hsu, J-Y Hung, W-A Chang, Y-S Lin, Y-C Pan, P-H Tsai, C-Y Wu, P-L Kuo
Hypoxia plays a critical role during the evolution of malignant cells and tumour microenvironment (TME).Tumour-derived exosomes contain informative microRNAs involved in the interaction of cancer and stromal cells, thus contributing to tissue remodelling of tumour microenvironment. This study aims to clarify how hypoxia affects tumour angiogenesis through exosomes shed from lung cancer cells. Lung cancer cells produce more exosomes under hypoxic conditions than do parental cells under normoxic conditions. miR-23a was significantly upregulated in exosomes from lung cancer under hypoxic conditions...
April 24, 2017: Oncogene
https://www.readbyqxmd.com/read/28436740/major-immunodominant-region-of-hepatitis-b-virus-core-antigen-as-a-delivery-vector-to-improve-the-immunogenicity-of-the-fusion-antigen-rop2-sag1-multiepitope-from-toxoplasma-gondii-in-mice
#11
Wenhuan Wang, Fangfang Feng, Jinhui Lv, Zixin Xie, Jun Chen, Lifang Zhang, Wenshu Li
To prepare the dominant multiepitope fusion antigen ROP2-SAG1 (RSmultiepitope) from Toxoplasma gondii in a prokaryotic system, the major immunodominant region (MIR) of the human hepatitis B virus core antigen (HBcAg(MIR)) was used as a delivery vector. The gene encoding the RSmultiepitope was inserted into HBcAg(MIR), and rHBcAg(MIR)-RSmultiepitope was prepared, purified, and administered to BALB/c mice through intradermal injection. An indirect enzyme-linked immunosorbent assay analysis based on a multiepitope peptide facilitated the specific differentiation of sera obtained from mice immunized with the rHBcAg(MIR)-RSmultiepitope protein, and high titers (greater than 1:6,400) of specific anti-RSmultiepitope antibodies were obtained...
April 24, 2017: Viral Immunology
https://www.readbyqxmd.com/read/28436711/mir-33b-5p-sensitizes-gastric-cancer-cells-to-chemotherapy-drugs-via-inhibiting-hmga2-expression
#12
Xiaoyan Yang, Qian Zhao, Huali Yin, Xiaoyong Lei, Runliang Gan
MicroRNAs (miRNAs) are internal, noncoding, and ∼22 nt small RNAs that display cell- and tissue-specific expression. They play important regulatory roles in cell proliferation and chemo-sensitivity. This study focused on tumor-suppressive miR-33b-5p expression as well as its role in gastric cancer. MiR-33b-5p was found low expression in gastric cancer cell lines. Functionally, western blots and the luciferase reporter assay were used to confirme that HMGA2 was the potential target of miR-33b-5p. Next, we used CCK-8 kits to analyze the effect of miR-33b-5p combined chemotherapy drugs on cell inhibition rate, and flow cytometry to analyze cells apoptosis...
April 24, 2017: Journal of Drug Targeting
https://www.readbyqxmd.com/read/28436693/expression-of-circulating-mir-17-92-cluster-and-hdac9-gene-in-atherosclerotic-patients-with-unstable-and-stable-carotid-plaques
#13
Silvia Ferronato, Aldo Mombello, Ilaria Posenato, Paola Candiani, Alberto Scuro, Carlo Setacci, Macarena Gomez-Lira
AIMS: The miR-17-92 cluster and HDAC9 gene are involved in inflammatory, apoptotic, and angiogenic processes that are activated in the vulnerable carotid plaque. The aim of this research was to determine whether expression of one or more of the miRs of the cluster and/or HDAC9 expression could represent biomarkers for patients with unstable atherosclerotic carotid plaques. MATERIALS AND METHODS: Plasma levels of miRs and HDAC9 expression in peripheral blood were analyzed by real-time PCR in patients with histologically classified stable or unstable plaques...
April 24, 2017: Genetic Testing and Molecular Biomarkers
https://www.readbyqxmd.com/read/28436683/dexmedetomidine-protects-pc12-cells-from-lidocaine-induced-cytotoxicity-through-downregulation-of-col3a1-mediated-by-mir-let-7b
#14
Qiong Wang, Yingjun She, Xiaobao Bi, Baisong Zhao, Xiangcai Ruan, Yonghong Tan
Safety concerns of some local anesthetics, such as lidocaine, have been raised in recent years due to potential neurological impairment. Dexmedetomidine may protect humans from neurotoxicity, and miR-let-7b is activated by nerve injury; however, the roles of miR-let-7b and its target gene in lidocaine-induced cytotoxicity are not well known. Through bioinformatics and a luciferase reporter assay, COL3A1 was suggested as a direct target gene of miR-let-7b. Here, we confirmed by measuring mRNA and protein levels that miR-let-7b was downregulated and COL3A1 was upregulated in lidocaine-treated cells, an observation that was reversed by dexmedetomidine...
April 24, 2017: DNA and Cell Biology
https://www.readbyqxmd.com/read/28436462/mir-146b-is-down-regulated-during-the-chondrogenic-differentiation-of-human-bone-marrow-derived-skeletal-stem-cells-and-up-regulated-in-osteoarthritis
#15
Emma Budd, María C de Andrés, Tilman Sanchez-Elsner, Richard O C Oreffo
Articular cartilage injury can result in chondrocyte loss and diminishment of specialised extracellular matrix, which can progress to an osteoarthritic (OA) phenotype. Stem cells have emerged as a favourable approach for articular cartilage regeneration. Identification of miRNAs which influence stem cell fate offers new approaches for application of miRNAs to regenerate articular cartilage. Skeletal stem cells (SSCs) isolated from human bone marrow were cultured as high density micromass' using TGF-β3 to induce chondrogenesis...
April 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28436387/predictive-value-of-microrna-143-in-evaluating-the-prognosis-of-patients-with-hepatocellular-carcinoma
#16
Jian Zhang, Hai Lin, Xiao-Ying Wang, Dong-Qin Zhang, Jian-Xia Chen, Yan Zhuang, Xiao-Li Zheng
OBJECTIVE: The study aims to evaluate the predictive value of microRNA-143 (miR-143) for the prognosis of patients with hepatocellular carcinoma (HCC). METHODS: Between October 2010 and October 2012, 131 HCC patients were selected as a case group; meanwhile, 122 healthy controls were enrolled as a control group. The miR-143 expression in serum was detected by quantitative real-time polymerase chain reaction (qRT-PCR). These HCC patients were divided into the high miR-143 expression group and the low miR-143 expression group based on the threshold of receiver operating characteristic (ROC) curve...
March 31, 2017: Cancer Biomarkers: Section A of Disease Markers
https://www.readbyqxmd.com/read/28436302/gene-set-enrichment-analysis-a-genome-wide-expression-profile-based-strategy-for-discovering-functional-microrna-disease-relationships
#17
Yin Ni, Caiyun Song, Shuqing Jin, Zhoufeng Chen, Ming Ni, Lu Han, Jiansheng Wu, Yin Jin
Objective To explore stable and functional microRNA (miRNA)-disease relationships using a genome-wide expression profile pattern matching strategy. Methods We applied the ranked microarray pattern matching strategy Gene Set Enrichment Analysis to identify miRNA permutations with similar expression patterns to diseases. We also used quantitative reverse transcription PCR to validate the predicted expression levels of miRNAs in three diseases: inflammatory bowel disease (IBD), oesophageal cancer, and colorectal cancer...
January 1, 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/28436261/a-qrt-pcr-and-gene-functional-enrichment-study-focused-on-downregulation-of-mir-141-3p-in-hepatocellular-carcinoma-and-its-clinicopathological-significance
#18
Cui-Zhen Liu, Zhi-Hua Ye, Jie Ma, Rong-Quan He, Hai-Wei Liang, Zhi-Gang Peng, Gang Chen
BACKGROUND: The clinical significance of miR-141-3p in hepatocellular carcinoma has not been verified. Therefore, we conducted this study to examine miR-141-3p expression and its clinical significance in hepatocellular carcinoma and to investigate the functions of its potential targets. METHODS: The Cancer Genome Atlas database and the Gene Expression Omnibus database were used to explore the aberrant expression of miR-141-3p in hepatocellular carcinoma. Furthermore, we assessed the miR-141-3p levels in 95 hepatocellular carcinoma tissues with 95 matched adjacent tissues using real-time quantitative polymerase chain reaction...
January 1, 2017: Technology in Cancer Research & Treatment
https://www.readbyqxmd.com/read/28436142/cortisol-is-associated-with-low-frequency-of-interleukin-10-producing-b-cells-in-patients-with-atherosclerosis
#19
Yizhong Huo, Yan Chu, Lixin Guo, Linli Liu, Xiaojun Xia, Tierui Wang
It is accepted that inflammation plays a critical role in the development of atherosclerosis; the pathogenesis is not clear. B-cell-produced interleukin (IL) 10 is an immune regulatory cytokine that can inhibit immune inflammation. This study tests a hypothesis that a psychological stress hormone, cortisol, suppresses IL-10 expression in peripheral B cells of patients with atherosclerosis. Peripheral blood samples were collected from patients with coronary artery atherosclerosis. B cells were isolated from the blood samples to be analyzed for the expression of IL-10 and micro RNA (miR) 98 by real-time polymerase chain reaction...
April 2017: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/28436141/microrna-10b-regulates-the-renewal-of-spermatogonial-stem-cells-through-kruppel-like-factor-4
#20
Jiang Li, Xiang Liu, Xiaopeng Hu, Geng G Tian, Wenzhi Ma, Xiuying Pei, Yanrong Wang, Ji Wu
MicroRNAs (miRs) are functionally important in spermatogenesis, which is the self-renewal or differentiation of spermatogonial stem cells (SSCs). Here, we report a novel role for miR-10b in regulating the self-renewal of mouse SSCs. We showed that miR-10b was highly expressed in mouse SSCs in vitro and enhanced SSC proliferation. Knockdown of miR-10b significantly increased the apoptosis of SSCs compared with controls. Kruppel-like factor 4 was found to be a target gene of miR-10b in the enhancement of SSC proliferation...
April 2017: Cell Biochemistry and Function
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