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https://www.readbyqxmd.com/read/29327233/dcaf1-is-involved-in-hcv-replication-through-regulation-of-mir-122
#1
Yanling Yan, Conghui Li, Binlian Sun, Rongge Yang
Hepatitis C virus (HCV) is a worldwide threaten to human health with a high ratio of chronic infections. Recently, we found that Vpr-mediated regulation of HCV replication depends on the host protein DDB1-Cul4 associate factor 1 (DCAF1), implying that DCAF1 might be involved in the replication of HCV. In this study, we demonstrated that DCAF1 knockdown reduced HCV replication both in the infectious (JFH1) and replicon (Con1) systems. Further investigation showed a negative regulation of HCV internal ribosome entry site (IRES)-mediated translation by DCAF1...
January 11, 2018: Archives of Virology
https://www.readbyqxmd.com/read/29314614/aberrant-expression-of-micrornas-and-the-mir-1-met-pathway-in-canine-hepatocellular-carcinoma
#2
Y-C Lai, N Ushio, M M Rahman, Y Katanoda, K Ogihara, Y Naya, A Moriyama, T Iwanaga, Y Saitoh, T Sogawa, T Sunaga, Y Momoi, H Izumi, N Miyoshi, Y Endo, M Fujiki, H Kawaguchi, N Miura
Canine hepatocellular carcinoma (HCC) is the most common primary hepatic tumour in dogs. MicroRNA (miRNA) dysregulation has been reported in human HCC and shown to have diagnostic and prognostic value; however, there are no data on miRNA expression in canine HCC. The aim of the present study was to investigate differentially expressed miRNAs in canine HCC. Analysis of miRNA expression in canine HCC tissues and cell lines by quantitative reverse transcription PCR showed that miR-1, miR-122, let-7a, and let-7g were downregulated, whereas miR-10b and miR-21 were upregulated in canine HCC...
January 3, 2018: Veterinary and Comparative Oncology
https://www.readbyqxmd.com/read/29262398/characteristic-microrna-expression-induced-by-%C3%AE-opioid-receptor-activation-in-the-rat-liver-under-prolonged-hypoxia
#3
Feng Zhi, Naiyuan Shao, Lian Xue, Yuan Xu, Xuezhi Kang, Yilin Yang, Ying Xia
BACKGROUND/AIMS: Hypoxic/ischemic injury to the liver is a frequently encountered clinical problem with limited therapeutic options. Since microRNAs (miRNAs) are involved in hypoxic/ ischemic events, and δ-opioid receptor (DOR) is protective against hypoxic/ischemic injury, we asked if pharmacological activation of DOR can alter hypoxic events by regulating miRNA expression in the liver. As the first step, the present work aimed at testing the effect of DOR activation on hepatic miRNA expression in hypoxia...
December 14, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29258547/a-preliminary-analysis-of-hepatitis-c-virus-in-pancreatic-islet-cells
#4
Jason T Blackard, Ling Kong, Angela Lombardi, Dirk Homann, Sara Salehi Hammerstad, Yaron Tomer
BACKGROUND: An association between hepatitis C virus (HCV) and type 2 diabetes (T2D) is supported by numerous epidemiologic studies. We hypothesized that HCV could infect human pancreatic islet cells in vitro. METHODS: Measures of HCV RNA synthesis and protein production were used to evaluate HCV infection of pancreatic islets recovered from human donors. RESULTS: Significant co-staining of insulin and the HCV entry factor CD81 was observed in pancreatic islets...
December 20, 2017: Virology Journal
https://www.readbyqxmd.com/read/29248466/leptin-suppresses-microrna-122-promoter-activity-by-phosphorylation-of-foxo1-in-hepatic-stellate-cell-contributing-to-leptin-promotion-of-mouse-liver-fibrosis
#5
Qing Cao, Xiaofei Zhu, Xuguang Zhai, Li Ji, Fangyun Cheng, Yiqi Zhu, Pengfei Yu, Yajun Zhou
Adipocytokine leptin promotes hepatic stellate cell (HSC) activation (a key step in liver fibrogenesis) and liver fibrosis. microRNA-122 (miR-122) is the most abundant liver-specific miRNA and was demonstrated to inhibit liver fibrosis and reduced HSC proliferation. Our previous study revealed that leptin reduced miR-122 level in HSCs. This study was aimed to investigate whether leptin affected miR-122 promoter and the underlying mechanisms in HSCs. Results showed that leptin inhibited miR-122 promoter activity...
December 14, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/29243807/microrna-as-a-systemic-intervention-in-the-specific-breast-cancer-subtypes-with-c-myc-impacts-introducing-subtype-based-appraisal-tool
#6
REVIEW
Vida Pourteimoor, Mahdi Paryan, Samira Mohammadi-Yeganeh
Breast cancer is indisputably a heterogeneous disease, in which a formidable combination of definitely dis-regulated C-MYC and microRNA (miRNA) profiles along with other factors are responsible to generate a specific type of breast cancer. C-MYC as a master regulator of more than 20,000 genes can modify the expression of genes underlying to perform diverse conflicting functional frameworks. The functional spectra of miRNA in the new areas of the evolution of cell behaviors are identified. Here, we endeavor to summarize some recent advances of miRNA applications that can be recruited as combinatorial targeted therapy for patients with breast cancer...
December 15, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29235390/mir-122-and-other-micrornas-as-potential-circulating-biomarkers-of-drug-induced-liver-injury
#7
Lawrence S Howell, Lucy Ireland, B Kevin Park, Christopher E Goldring
Drug-induced liver injury (DILI) is a severe adverse drug reaction which is of major concern to patients, clinicians and the pharmaceutical industry. Accurate and rapid detection of DILI is important for patient stratification and treatment in the clinic and benefits preclinical drug design and risk assessment. MicroRNAs (miRNAs) offer a potential new and improved class of circulating biomarkers of DILI over the current gold standard biomarkers. Areas covered: This review highlights the shortcomings of the currently used panel of biomarkers and how miRNAs, primarily miR-122, show an improved level of specificity and sensitivity in the prediction of DILI...
December 15, 2017: Expert Review of Molecular Diagnostics
https://www.readbyqxmd.com/read/29228557/peripheral-blood-micrornas-expression-is-associated-with-infant-respiratory-syncytial-virus-infection
#8
Shouyi Wang, Pin Liu, Pu Yang, Junwen Zheng, Dongchi Zhao
MicroRNAs respond to the inflammatory responses induced by RNA virus infection. In this study, we investigated the specific microRNA profile in the peripheral blood of infants infected with respiratory syncytial virus (RSV). Blood specimens were analyzed using microRNA microarrays, followed by quantitative RT-PCR. A specific microRNA profile in the peripheral blood of RSV-infected infants was identified for the first time. MiR-106b-5p, miR-20b-5p, and miR-342-3p were upregulated, while miR-320e, miR-320d, miR-877-5p, miR-122-5p, and miR-92b-5p were downregulated...
November 14, 2017: Oncotarget
https://www.readbyqxmd.com/read/29221165/angiogenesis-in-adenosquamous-cancer-of-pancreas
#9
Nicola Silvestris, Katia Danza, Vito Longo, Oronzo Brunetti, Livia Fucci, Antonella Argentiero, Angela Calabrese, Ivana Cataldo, Roberto Tamma, Domenico Ribatti, Stefania Tommasi
Adenosquamous carcinoma of the pancreas (ASCP) is an uncommon variant of exocrine pancreatic malignancies, characterized by a histological admixture of adenomatous and squamous cell elements. This cancer is characterized by a poorly differentiated histology and a poorer clinical outcome compared to pancreatic ductal adenocarcinoma (PDAC). Unlike PDAC, that is characterized by a low microvascular density (MVD) and collapsed vasculature, no data are available about angiogenesis in ASPC. Immunohistochemical evaluation of MVD and trypatse-positive mast cells (MCs) were performed on a single case of ASCP compared to PDAC...
November 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29216638/microrna-122-inhibits-lipid-droplet-formation-and-hepatic-triglyceride-accumulation-via-yin-yang-1
#10
Guo-Yi Wu, Chen Rui, Ji-Qiao Chen, Eiketsu Sho, Shan-Shan Zhan, Xian-Wen Yuan, Yi-Tao Ding
BACKGROUND/AIMS: An increase in intracellular lipid droplet formation and hepatic triglyceride (TG) content usually results in nonalcoholic fatty liver disease. However, the mechanisms underlying the regulation of hepatic TG homeostasis remain unclear. METHODS: Oil red O staining and TG measurement were performed to determine the lipid content. miRNA expression was evaluated by quantitative PCR. A luciferase assay was performed to validate the regulation of Yin Yang 1 (YY1) by microRNA (miR)-122...
2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29200969/inhibition-of-breast-cancer-cell-proliferation-and-tumorigenesis-by-long-non-coding-rna-rpph1-down-regulation-of-mir-122-expression
#11
Yi Zhang, Lili Tang
Background: Recent studies showed that long non-coding RNA (lncRNA) plays an important role in many life activities. RPPH1 is one of the lncRNA genes that are expressed differently between breast cancer and normal tissues by the lncRNA gene chip. Our study was conducted to examine the regulation of lncRNA RPPH1 in breast cancer. Methods: Two cell lines, MCF-7 and MDA-MB-231, were selected to be the research objects in this study; RPPH1 overexpression and knockdown models were established by transforming vectors...
2017: Cancer Cell International
https://www.readbyqxmd.com/read/29200427/a-unique-plasma-microrna-profile-defines-type-2-diabetes-progression
#12
Paola de Candia, Gaia Spinetti, Claudia Specchia, Elena Sangalli, Lucia La Sala, Annachiara Uccellatore, Silvia Lupini, Stefano Genovese, Giuseppe Matarese, Antonio Ceriello
A major unmet medical need to better manage Type 2 Diabetes (T2D) is the accurate disease prediction in subjects who show glucose dysmetabolism, but are not yet diagnosed as diabetic. We investigated the possibility to predict/monitor the progression to T2D in these subjects by retrospectively quantifying blood circulating microRNAs in plasma of subjects with i) normal glucose tolerance (NGT, n = 9); ii) impaired glucose tolerance (IGT, n = 9), divided into non-progressors (NP, n = 5) and progressors (P, n = 4) based on subsequent diabetes occurrence, and iii) newly diagnosed T2D (n = 9)...
2017: PloS One
https://www.readbyqxmd.com/read/29183708/posttranscriptional-regulation-of-lipid-metabolism-by-non-coding-rnas-and-rna-binding-proteins
#13
REVIEW
Abhishek K Singh, Binod Aryal, Xinbo Zhang, Yuhua Fan, Nathan Price, Yajaira Suárez, Carlos Fernández-Hernando
Alterations in lipoprotein metabolism enhance the risk of cardiometabolic disorders including type-2 diabetes and atherosclerosis, the leading cause of death in Western societies. While the transcriptional regulation of lipid metabolism has been well characterized, recent studies have uncovered the importance of microRNAs (miRNAs), long-non-coding RNAs (lncRNAs) and RNA binding proteins (RBP) in regulating the expression of lipid-related genes at the posttranscriptional level. Work from several groups has identified a number of miRNAs, including miR-33, miR-122 and miR-148a, that play a prominent role in controlling cholesterol homeostasis and lipoprotein metabolism...
November 25, 2017: Seminars in Cell & Developmental Biology
https://www.readbyqxmd.com/read/29182758/microrna-122-targets-genes-related-to-goose-fatty-liver
#14
Jun Zhang, Qian Wang, Xing Zhao, Laidi Wang, Xingguo Wang, Jian Wang, Biao Dong, Daoqing Gong
MicroRNA-122 (miR-122), a completely conserved, liver-specific miRNA in vertebrates, is essential for the maintenance of liver homeostasis. This 22-nucleotide-length RNA regulates diverse functions such as cholesterol, glucose, and lipid metabolism as well as iron homeostasis and infection of hepatitis C virus (HCV). Landes goose, which has a good, fatty liver, has important significance for us in studying miR-122 function in goose fatty liver. In the current study, we identified miR-122 in goose liver and its expression pattern and target genes...
November 22, 2017: Poultry Science
https://www.readbyqxmd.com/read/29176640/identification-of-differentially-expressed-mirnas-in-the-fatty-liver-of-landes-goose-anser-anser
#15
Fang Chen, Hao Zhang, Jinjun Li, Yong Tian, Jing Xu, Li Chen, Jintao Wei, Na Zhao, Xuehai Yang, Wei Zhang, Lizhi Lu
Unlike mammals, in palmipedes de novo lipogenesis from diet takes place mostly in the liver. The French Landes Goose is famous for its high capacity and susceptibility to fatty liver production. While miRNAs play a critical role in the posttranscriptional regulation of gene expression, miRNAs that are involved in the regulation of goose hepatic steatosis have yet to be elucidated. Using high-throughput sequencing, we analyzed miRNAs expression profile of Landes goose liver after overfeeding for 21 days. Aan-miR-122-5p was the most frequently sequenced known miRNA, but it was unchanged after overfeeding...
November 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29176318/ccl2-is-upregulated-by-decreased-mir-122-expression-in-iron-overload-induced-hepatic-inflammation
#16
Yuxiao Tang, Wentao Jia, Xiaowen Niu, Lusha Wu, Hui Shen, Lina Wang, Ruirui Qi, Changquan Ling, Min Li
BACKGROUND/AIMS: Iron overload (IO) is accompanied by hepatic inflammation. The chemokine (C-C motif) ligand 2 (CCL2) mediates inflammation, and its overexpression is associated with IO. However, whether IO results in CCL2 overexpression in the liver and the underlying mechanisms are unclear. METHODS: We subjected mice to IO by administering intraperitoneal injections of dextran-iron or by feeding mice a 3% dextran-iron diet to observe the effects of IO on miR-122/CCL2 expression through real-time qPCR and Western blot analysis...
November 24, 2017: Cellular Physiology and Biochemistry
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
#17
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/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/29146439/risk-stratification-after-paracetamol-overdose-using-mechanistic-biomarkers-results-from-two-prospective-cohort-studies
#19
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
https://www.readbyqxmd.com/read/29145255/functional-polymorphism-rs3783553-in-the-3-untranslated-region-of-il-1a-increased-the-risk-of-ischemic-stroke-a-case-control-study
#20
Peng Wang, Qian He, Chen Liu, Shi Zhen He, Shou Yan Zhu, Ying Wen Li, Wei Su, Shu Tian Xiang, Bo Zhao
Accumulating evidence indicates interleukin-1 (IL-1) is a critical mediator of inflammatory responses in ischemic stroke (IS). The aim of this study was to investigate whether rs3783553 in the 3'-untranslated region of IL-1A was associated with the risk of IS. In this hospital-based case-control study, we genotyped the rs3783553 using polymerase chain reaction in 316 patients with IS and 332 age, sex, and ethnicity-matched controls. Plasma level of IL-1α was measured by enzyme-linked immunosorbent assay. The relative luciferase activities were measured by the Dual Luciferase assay system...
November 2017: Medicine (Baltimore)
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