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miRNA liver

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https://www.readbyqxmd.com/read/28740555/atg9b-deficiency-suppresses-autophagy-and-potentiates-endoplasmic-reticulum-stress-associated-hepatocyte-apoptosis-in-hepatocarcinogenesis
#1
Ning Wang, Hor-Yue Tan, Sha Li, Yibin Feng
The aim of this study was to investigate the mechanism underlying autophagy deficiency during hepatic carcinogenesis. For this purpose, we used choline-deficient, amino acid-defined (CDAA) hepatocarcinogenesis model in mice. miRNA microarrays combined with computational target predictions and GO analysis were used to identify molecular processes involved in carcinogenesis. PCR profiler array was employed to detect the dysregulated autophagy-related genes during carcinogenesis. We observed induction of hepatic tumours with increased inflammation, DNA damage, and cell death...
2017: Theranostics
https://www.readbyqxmd.com/read/28739251/evidence-for-an-important-role-of-host-micrornas-in-regulating-hepatic-fibrosis-in-humans-infected-with-schistosoma-japonicum
#2
Sandrine Cabantous, Xunya Hou, Laurence Louis, Hongbin He, Odette Mariani, Xavier Sastre, Martine Daujat-Chavanieu, Yuesheng Li, Alain Dessein
MicroRNAs (miRNAs) are short, non-coding RNAs that repress the translation of target gene transcripts. They have been implicated in various activities such as cell proliferation, survival, differentiation, migration and metabolism. We report here the first known miRNome and transcriptome analysis of human livers displaying advanced fibrosis due to Schistosoma japonicum infection. We present evidence that hsa-miR-150-5p, hsa-miR-10a-5p, hsa-miR-199a-3p, hsa-miR-4521, hsa-miR-222/221, hsa-miR-663b and hsa-miR-143-3p (associated without correction) play an important role in hepatic fibrosis by acting on metabolism, organization of the extracellular matrix proteins, lipid mobilization and limitation of oxidative damage stress...
July 21, 2017: International Journal for Parasitology
https://www.readbyqxmd.com/read/28735896/argonaute-clip-defines-a-deregulated-mir-122-bound-transcriptome-that-correlates-with-patient-survival-in-human-liver-cancer
#3
Joseph M Luna, Juan M Barajas, Kun-Yu Teng, Hui-Lung Sun, Michael J Moore, Charles M Rice, Robert B Darnell, Kalpana Ghoshal
MicroRNA-122, an abundant and conserved liver-specific miRNA, regulates hepatic metabolism and functions as a tumor suppressor, yet systematic and direct biochemical elucidation of the miR-122 target network remains incomplete. To this end, we performed Argonaute crosslinking immunoprecipitation (Argonaute [Ago]-CLIP) sequencing in miR-122 knockout and control mouse livers, as well as in matched human hepatocellular carcinoma (HCC) and benign liver tissue to identify miRNA target sites transcriptome-wide in two species...
July 13, 2017: Molecular Cell
https://www.readbyqxmd.com/read/28732393/microrna-30a-suppresses-tumor-progression-by-blocking-ras-raf-mek-erk-signaling-pathway-in-hepatocellular-carcinoma
#4
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/28727484/construction-and-analysis-of-circular-rna-molecular-regulatory-networks-in-liver-cancer
#5
Shuangchun Ren, Zhuoyuan Xin, Yinyan Xu, Jianting Xu, Guoqing Wang
Liver cancer is the sixth most prevalent cancer, and the third most frequent cause of cancer-related deaths. Circular RNAs (circRNAs), a kind of special endogenous ncRNAs, have been coming back to the forefront of cancer genomics research. In this study, we employed a systems biology approach to construct and analyze the circRNA molecular regulatory networks in the context of liver cancer. We detected a total of 127 differentially expressed circRNAs and 3,235 differentially expressed mRNAs. We selected the top-5 upregulated circRNAs to construct a circRNA-miRNA-mRNA network...
July 20, 2017: Cell Cycle
https://www.readbyqxmd.com/read/28720782/dysregulated-mirnas-and-their-pathogenic-implications-for-the-neurometabolic-disease-propionic-acidemia
#6
Ana Rivera-Barahona, Alejandro Fulgencio-Covián, Celia Pérez-Cerdá, Ricardo Ramos, Michael A Barry, Magdalena Ugarte, Belén Pérez, Eva Richard, Lourdes R Desviat
miRNome expression profiling was performed in a mouse model of propionic acidemia (PA) and in patients' plasma samples to investigate the role of miRNAs in the pathophysiology of the disease and to identify novel biomarkers and therapeutic targets. PA is a potentially lethal neurometabolic disease with patients developing neurological deficits and cardiomyopathy in the long-term, among other complications. In the PA mouse liver we identified 14 significantly dysregulated miRNAs. Three selected miRNAs, miR-34a-5p, miR-338-3p and miR-350, were found upregulated in brain and heart tissues...
July 18, 2017: Scientific Reports
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
#7
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
https://www.readbyqxmd.com/read/28716651/significance-of-a-to-i-rna-editing-of-transcripts-modulating-pharmacokinetics-and-pharmacodynamics
#8
REVIEW
Masataka Nakano, Miki Nakajima
RNA editing is a post-transcriptional process that alters the nucleotide sequence of RNA transcripts to generate transcriptome diversity. Among the various types of RNA editing, adenosine-to-inosine (A-to-I) RNA editing is the most frequent type of RNA editing in mammals. Adenosine deaminases acting on RNA (ADAR) enzymes, ADAR1 and ADAR2, convert adenosines in double-stranded RNA structures into inosines by hydrolytic deamination. Inosine forms a base pair with cytidine as if it were guanosine; therefore, the conversion may affect the amino acid sequence, splicing, microRNA targeting, and miRNA maturation...
July 15, 2017: Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28714414/role-of-mirna-in-lung-cancer-potential-biomarkers-and-therapies
#9
Xiaohong Du, Jitai Zhang, Juping Wang, Xiaoming Lin, Feng Ding
MicroRNAs (miRNAs) are small noncoding RNAs, which downregulate gene expression by repressing or degrading mRNA targets. Lung cancer (LC), together with liver and colorectal cancers are the three leading causes of cancer death worldwide, and 80% of LCs belong to non-small cell lung cancers (NSCLCs). Despite a great advancement in developing distinct and delicate tools for early diagnosis and targeted therapies over the last decade, only about 15% of the NSCLC patients eventually survived. MiRNAs are frequently dysregulated in carcinoma, including LC...
July 14, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28713968/inhibition-of-proliferation-and-invasion-of-hepatocellular-carcinoma-cells-by-lncrna-aslnc02525-silencing-and-the-mechanism
#10
Zi Chen, Dongwen Xu, Tao Zhang
One of the most differentially expressed long non-coding RNAs (lncRNAs) that we identified by high throughput screening from liver cancer and para-carcinoma tissues, ASLNC02525, was highly expressed in the tissues and cell lines of liver cancer but not in adjacent tissues or normal hepatic cells. Knockdown of ASLNC02525 in hepatocellular carcinoma cells inhibited the proliferation and invasion. In the process, expression level of transcription factor twist1 (twist‑related protein 1) was reduced, but no change at transcription level was observed...
July 7, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28711597/micrornas-and-extracellular-vesicles-in-cholangiopathies
#11
REVIEW
P Olaizola, P Y Lee-Law, A Arbelaiz, A Lapitz, M J Perugorria, L Bujanda, J M Banales
Cholangiopathies encompass a heterogeneous group of disorders affecting biliary epithelial cells (i.e. cholangiocytes). Early diagnosis, prognosis and treatment still remain clinically challenging for most of these diseases and are critical for adequate patient care. In the past decade, extensive research has emphasized microRNAs (miRs) as potential non-invasive biomarkers and tools to accurately identify, predict and treat cholangiopathies. MiRs can be released extracellularly conjugated with lipoproteins or encapsulated in extracellular vesicles (EVs)...
July 12, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28710032/microrna-136-inhibits-colon-cancer-cell-proliferation-and-invasion-through-targeting-liver-receptor-homolog-1-wnt-signaling
#12
Qinggong Yuan, Gang Cao, Junhui Li, Yan Zhang, Wenbin Yang
An increasing number of studies have reported that microRNAs (miRNAs) are involved in the malignant behavior of colon cancer cells through directly targeting multiple tumor suppressors or oncogenes. The expression and role of miR-136 has been reported in several types of human cancer. However, the role of miR-136 in colon cancer remains unclear. In this study, we aimed to investigate the expression and function of miR-136 in colon cancer and the potential underlying mechanism. Here, we found that miR-136 was decreased in colon cancer cell lines and tissues...
July 11, 2017: Gene
https://www.readbyqxmd.com/read/28703810/microrna-148a-deficiency-promotes-hepatic-lipid-metabolism-and-hepatocarcinogenesis-in-mice
#13
Li Cheng, Yahui Zhu, Han Han, Qiang Zhang, Kaisa Cui, Hongxing Shen, Jinxiang Zhang, Jun Yan, Edward Prochownik, Youjun Li
miRNAs are involved in many physiologic and disease processes by virtue of degrading specific mRNAs or inhibiting their translation. miR-148a has been implicated in the control of tumor growth and cholesterol and triglyceride homeostasis using in vitro or in vivo gene expression- and silencing-based approaches. Here miR-148a knockout (KO) mice were used to investigate the intrinsic role of miR-148a in liver physiology and hepatocarcinogenesis in mice. miR-148a downregulation was found to be correlated with poor clinical outcomes in hepatocellular carcinoma (HCC) patients...
July 13, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28698161/evolutionary-conservation-and-expression-of-mir-10a-3p-in-olive-flounder-and-rock-bream
#14
Ara Jo, Jennifer Im, Hee-Eun Lee, Dongmin Jang, Gyu-Hwi Nam, Anshuman Mishra, Woo-Jin Kim, Won Kim, Hee-Jae Cha, Heui-Soo Kim
MicroRNAs (miRNAs) are small non-coding RNAs (ncRNAs) that mainly bind to the seed sequences located within the 3' untranslated region (3' UTR) of target genes. They perform an important biological function as regulators of gene expression. Different genes can be regulated by the same miRNA, whilst different miRNAs can be regulated by the same genes. Here, the evolutionary conservation and expression pattern of miR-10a-3p in olive flounder and rock bream was examined. Binding sites (AAAUUC) to seed region of the 3' UTR of target genes were highly conserved in various species...
July 8, 2017: Gene
https://www.readbyqxmd.com/read/28695491/identification-and-characterization-of-the-chinese-giant-salamander-andrias-davidianus-mirnas-by-deep-sequencing-and-predication-of-their-targets
#15
Yong Huang, You Bing Yang, Xiao Chan Gao, Hong Tao Ren, Xi Hong Sun
MicroRNAs (miRNAs) are non-coding small RNA of approximately 22 nt in length. They are considered as key regulators for gene expression at the post-transcriptional level and play an important role in the regulation of many fundamental biological processes. Andrias davidianus, as one of the largest amphibian on earth, may represent the transitional type of animal from aquatic to terrestrial life, but so far, no miRNA has been identified in the species. In this study, Illumina deep sequencing was used for high-throughput analysis of miRNAs in a pooled small RNA library isolated from eight tissues sample of A...
August 2017: 3 Biotech
https://www.readbyqxmd.com/read/28691019/fish-oil-feeding-modulates-the-expression-of-hepatic-micrornas-in-a-western-style-diet-induced-nonalcoholic-fatty-liver-disease-rat-model
#16
Hualin Wang, Yang Shao, Fahu Yuan, Han Feng, Na Li, Hongyu Zhang, Chaodong Wu, Zhiguo Liu
Nonalcoholic fatty liver disease (NAFLD) is one of the most prevalent chronic liver diseases worldwide. Recent studies have indicated that fish oil supplementation has benefits against NAFLD. Our previous transcriptomic study has validated the effect of fish oil supplementation on altering hepatic gene expression in a NAFLD rat model. In the current study, we examined the effects of fish oil on the expression of hepatic microRNAs. Male Sprague-Dawley rats were fed with a lab chow (CON), high-fat high-cholesterol diet (WD), or WD supplemented with fish oil (FOH), respectively...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28689058/protective-effect-of-crocin-on-bpa-induced-liver-toxicity-in-rats-through-inhibition-of-oxidative-stress-and-downregulation-of-mapk-and-mapkap-signaling-pathway-and-mirna-122-expression
#17
Faezeh Vahdati Hassani, Soghra Mehri, Khalil Abnous, Ruth Birner-Gruenberger, Hossein Hosseinzadeh
Bisphenol A (BPA) is an artificial environmental endocrine disrupting chemical and commonly used as a monomer of polycarbonate plastics and epoxy resins. The aim of the present study is to investigate the hepatoprotective effects of crocin, a constituent of saffron, against BPA-induced liver toxicity. We showed that treatment of male Wistar rats with 0.5 mg/kg BPA for 30 days increased the level of 8-isoprostane, decreased the level of reduced glutathione, elevated serum levels of aspartate aminotransferase, lactate dehydrogenase, triglyceride, and glucose, and induced periportal inflammation...
July 6, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28685993/association-of-single-nucleotide-polymorphisms-in-micrornas-with-susceptibility-to-hepatitis-b-virus-infection-and-hbv-related-liver-complications-a-study-in-a-saudi-arabian-population
#18
Ahmed A Al-Qahtani, Mashael R Al-Anazi, Nyla Nazir, Kaiser Wani, Ayman A Abdo, Faisal M Sanai, Mohammed Q Khan, Hamad I Al-Ashgar, Ali Albenmousa, Waleed K Al-Hamoudi, Khalid A Alswat, Mohammed N Al-Ahdal
The aim of this study was to evaluate the association of 10 SNPs in different microRNAs (miRNAs) with susceptibility to hepatitis B virus (HBV) infection, HBV clearance, persistence of chronic HBV infection, and progression to liver cirrhosis and hepatocellular carcinoma (HCC). Patients were categorized into the following groups: inactive HBV carrier, active HBV carrier, HBV-cleared subject, and cirrhosis+HCC. Samples were analyzed for 10 SNPs in microRNAs using either PCR-based genotyping or the TaqMan assay...
July 7, 2017: Journal of Viral Hepatitis
https://www.readbyqxmd.com/read/28677798/microrna-448-suppresses-metastasis-of-pancreatic-ductal-adenocarcinoma-through-targeting-jak1-stat3-pathway
#19
Dan-Li Yu, Tao Zhang, Kun Wu, Yan Li, Juan Wang, Jun Chen, Xiao-Quan Li, Xing-Guo Peng, Jia-Ning Wang, Li-Guo Tan
Pancreatic ductal adenocarcinoma (PDAC) is the most common type of malignant pancreatic tumor. MicroRNAs (miRNAs) are a group of small, non-protein coding, endogenous RNAs that play critical roles in tumorigenesis and progression of PDAC. In the present study, we demonstrated that miR-448 expression was downregulated in PDAC tissues and cell lines. Clinical association analysis indicated that low expression of miR-448 was associated with poor prognostic features and conferred a significant reduced survival of PDAC patients...
August 2017: Oncology Reports
https://www.readbyqxmd.com/read/28676332/circulating-exosomes-in-obstructive-sleep-apnea-as-phenotypic-biomarkers-and-mechanistic-messengers-of-end-organ-morbidity
#20
REVIEW
Abdelnaby Khalyfa, Leila Kheirandish-Gozal, David Gozal
Obstructive sleep apnea (OSA), the most severe form of sleep disordered breathing, is characterized by intermittent hypoxia during sleep (IH), sleep fragmentation, and episodic hypercapnia. OSA is associated with increased risk for morbidity and mortality affecting cardiovascular, metabolic, and neurocognitive systems, and more recently with non-alcoholic fatty liver disease (NAFLD) and cancer-related deaths. Substantial variability in OSA outcomes suggests that genetically-determined and environmental and lifestyle factors affect the phenotypic susceptibility to OSA...
July 1, 2017: Respiratory Physiology & Neurobiology
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