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https://www.readbyqxmd.com/read/28086788/comprehensive-circrna-expression-profile-and-selection-of-key-circrnas-during-priming-phase-of-rat-liver-regeneration
#1
Lifei Li, Jianlin Guo, Yanhui Chen, Cuifang Chang, Cunshuan Xu
BACKGROUND: Rat liver regeneration (LR) proceeds along a process of highly organized and ordered tissue growth in response to the loss or injury of liver tissue, during which many physiological processes may play important roles. The molecular mechanism of hepatocyte proliferation, energy metabolism and substance metabolism during rat LR had been elucidated. Further, the correlation of circular RNA (circRNA) abundance with proliferation has recently been clarified. However, the regulatory capacity of circRNA in rat LR remains a fascinating topic...
January 13, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28067858/analysis-of-microrna-expression-profiling-involved-in-mc-lr-induced-cytotoxicity-by-high-throughput-sequencing
#2
Junguo Ma, Yuanyuan Li, Lan Yao, Xiaoyu Li
In recent years, microRNAs (miRNAs) in toxicology have attracted great attention. However, the underlying mechanism of miRNAs in the cytotoxicity of microcystin-LR (MC-LR) is lacking. The objective of this study is to analyze miRNA profiling in HepG2 cells after 24 h of MC-LR-exposure to affirm whether and how miRNAs were involved in the cytotoxicity of MC-LR. The results showed that totally 21 and 37 miRNAs were found to be significantly altered in the MC-LR treated cells at concentrations of 10 and 50 μM, respectively, when compared to the control cells...
January 7, 2017: Toxins
https://www.readbyqxmd.com/read/28062594/survey-of-800-datasets-from-human-tissue-and-body-fluid-reveals-xenomirs-are-likely-artifacts
#3
Wenjing Kang, Claus Heiner Bang-Bertelsen, Anja Holm, Anna Houben, Anne Holt Müller, Thomas Thymann, Flemming Pociot, Xavier Estivill, Marc Riemer Friedländer
miRNAs are small 22 nucleotide RNAs that can post-transcriptionally regulate gene expression. It has been proposed that dietary plant miRNAs can enter the human bloodstream and regulate host transcripts, however these findings have been widely disputed. We here conduct the first comprehensive meta-study in the field, surveying the presence and abundances of cross-species miRNAs (xenomiRs) in 824 sequencing datasets from various human tissues and body fluids. We find that xenomiRs are commonly present in tissues (17%) and body fluids (69%), however the abundances are low, comprising 0...
January 6, 2017: RNA
https://www.readbyqxmd.com/read/28060733/high-expression-of-mir-105-1-positively-correlates-with-clinical-prognosis-of-hepatocellular-carcinoma-by-targeting-oncogene-ncoa1
#4
Yu-Shui Ma, Ting-Miao Wu, Zhong-Wei Lv, Gai-Xia Lu, Xian-Ling Cong, Ru-Ting Xie, Hui-Qiong Yang, Zheng-Yan Chang, Ran Sun, Li Chai, Ming-Xiang Cai, Xiao-Jun Zhong, Jian Zhu, Da Fu
Increasing evidence supports that microRNA (miRNA) plays a significant functional role in cancer progression by directly regulating respective targets. In this study, the expression levels of miR-105-1 and its target gene were analyzed using genes microarray and hierarchical clustering analysis followed by validation with quantitative RT-PCR in hepatocellular carcinoma (HCC) and normal liver tissues. We examined the expression of nuclear receptor coactivator 1 (NCOA1), the potential target gene of miR-105-1, following the transfection of miR-105-1 mimics or inhibitors...
January 2, 2017: Oncotarget
https://www.readbyqxmd.com/read/28054337/combined-mirna-profiling-and-proteomics-demonstrates-that-different-mirnas-target-a-common-set-of-proteins-to-promote-colorectal-cancer-metastasis
#5
Sofía Torres, Irene Garcia-Palmero, Rubén A Bartolomé, María Jesús Fernandez-Aceñero, Elena Molina, Eva Calviño, Miguel F Segura, J Ignacio Casal
The process of liver colonisation in colorectal cancer remains poorly characterised. Here, we addressed the role of microRNA (miRNA) dysregulation in metastasis. We first compared miRNA expression profiles between colorectal cancer cell lines with different metastatic properties and then identified target proteins of the dysregulated miRNAs to establish their functions and prognostic value. We found that 38 miRNAs were differentially expressed between highly metastatic (KM12SM/SW620) and poorly metastatic (KM12C/SW480) cancer cell lines...
January 5, 2017: Journal of Pathology
https://www.readbyqxmd.com/read/28054243/differential-expression-and-mirna-regulation-of-the-gstp1-gene-in-the-regenerating-liver-of-chiloscyllium-plagiosum
#6
Yinghua Ge, Jiewen Zhang, Xinyi Shi, Conger Lu, Lingrong Yang, Yuanyuan Li, Yanna Chen, Dandan Cheng, Jing Bai, Zhengbing Lv, Lili Liu
Liver regeneration is a complicated process, and understanding the regulatory mechanism will be helpful in the treatment of diseases associated with liver. In this study, the one-third liver resection model was established in Chiloscyllium plagiosum, and the whole transcriptome of the C. plagiosum was generated using the Illumina-Solexa sequencing platform. Differentially expressed genes were analyzed using bioinformatics methods and verified using quantitative real-time PCR (qRT-PCR). Using miRanda and TargetScan, we screened the microRNA library for miRNAs that target the glutathione S-transferase P1(GSTP1) gene...
January 4, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28049231/an-explorative-analysis-for-the-role-of-serum-mir-10b-3p-levels-in-predicting-response-to-sorafenib-in-patients-with-advanced-hepatocellular-carcinoma
#7
Eileen L Yoon, Jong Eun Yeon, Eunjung Ko, Hyun Jung Lee, Ji Hye Je, Yang Jae Yoo, Seong Hee Kang, Sang Jun Suh, Ji Hoon Kim, Yeon Seok Seo, Hyung Joon Yim, Kwan Soo Byun
The prognostic role of aberrant serum miRNA expression for predicting response to sorafenib treatment in advanced hepatocellular carcinoma (HCC) patients has not been well characterized. We aimed to identify specific serum miRNAs that are associated with positive radiologic responses or improved survival in sorafenib-treated HCC patients. miR-18a, miR-21, miR-139-5p, miR-221, miR-224, and miR-10b-3p, were selected for analysis. Serum samples from 24 patients with advanced stage HCC and 25 patients with liver cirrhosis (LC) were analyzed...
February 2017: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/28043920/altered-mir-370-expression-in-hepatic-ischemia-reperfusion-injury-correlates-with-the-level-of-nuclear-kappa-b-nf-%C3%AE%C2%BAb-related-factors
#8
Jie Zhu, Fangfang Zhu, Wenfeng Song, Bin Zhang, Xie Zhang, Xiaofeng Jin, Hong Li
BACKGROUND & AIMS: MicroRNAs (miRNAs) are a class of small endogenous, non-coding RNAs that regulate gene expression at both the transcription and translation levels. Whether miRNAs have taken part in liver ischemia-reperfusion (IR) injury was rarely reported. The purpose of this article is to investigate the potential role of miR-370 in hepatic IR injury. METHODS: Male C57BL/6 mice were divided into 5 groups (sham-operated group, I/R group, IPC group, antagomir-370 group and antagomir-NC), and the expression levels of miR-370 were assessed by quantitative real-time PCR...
December 30, 2016: Gene
https://www.readbyqxmd.com/read/28031532/cell-free-methylation-markers-with-diagnostic-and-prognostic-potential-in-hepatocellular-carcinoma
#9
Chang-Yi Lu, Shih-Ya Chen, Hui-Ling Peng, Pu-Yeh Kan, Wan-Chi Chang, Chia-Jui Yen
Hepatocellular carcinoma (HCC) is a highly malignant tumor with poor prognosis and high mortality. There is a dearth of effective early diagnostic tools, so liver resection surgery and liver transplantation are the only effective medical treatments. The most commonly used marker for HCC detection is serum alpha fetoprotein (AFP), which has low sensitivity and specificity. Because aberrant DNA methylation of genes and miRNAs occurs early in most cancers, we explored whether circulating methylation markers could be promising clinical tools for HCC diagnosis...
December 23, 2016: Oncotarget
https://www.readbyqxmd.com/read/28028586/role-of-mirna-and-its-potential-as-a-novel-diagnostic-biomarker-in-drug-induced-liver-injury
#10
REVIEW
Sukumaran Sanjay, Chandrashekaran Girish
PURPOSE: MicroRNAs (miRNA or miR) are the most abundant and stable class of small RNA. Unlike the typical RNA molecules present in the cell, they do not encode proteins but can control translation. and Hhence, they are found to play a major role in the regulation of cellular processes. miRNAs have been shown to differentially regulate various genes, and the expression levels of some miRNAs changes several fold in liver and serum, during drug- induced toxicity. This review summarises some of the latest findings about the biological functions of miRNA and its potential use as diagnostic biomarkers in drug- induced liver injury...
December 27, 2016: European Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28026002/microrna-33b-suppresses-the-proliferation-and-metastasis-of-hepatocellular-carcinoma-cells-through-the-inhibition-of-sal-like-protein-4-expression
#11
Qinggang Tian, Yao Xiao, Yanting Wu, Yun Liu, Zhiqing Song, Wenfeng Gao, Jing Zhang, Jingling Yang, Yuguo Zhang, Tuankui Guo, Furong Dai, Zhigang Sun
MicroRNAs (miRNAs or miRs) have been found to participate in the development and malignant progression of human cancers by negatively mediating the expression of their target genes. Recently, miR‑33b has been reported to be involved in multiple types of human cancer, including hepatocellular carcinoma (HCC). However, the underlying regulatory mechanisms of miR‑33b in HCC cell growth and metastasis remain largely unclear. In the present study, RT-qPCR revealed that miR‑33b was significantly downregulated in HCC tissues compared to their matched adjacent normal tissues...
November 2016: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28025544/noncoding-rna-profiles-in-tobacco-and-alcohol-associated-diseases
#12
REVIEW
Nayra Soares do Amaral, Natalia Cruz E Melo, Beatriz de Melo Maia, Rafael Malagoli Rocha
Tobacco and alcohol are the leading environmental risk factors in the development of human diseases, such as cancer, cardiovascular disease, and liver injury. Despite the copious amount of research on this topic, by 2030, 8.3 million deaths are projected to occur worldwide due to tobacco use. The expression of noncoding RNAs, primarily microRNAs (miRNAs) and long noncoding RNAs (lncRNAs), is modulated by tobacco and alcohol consumption. Drinking alcohol and smoking cigarettes can modulate the expression of miRNAs and lncRNAs through various signaling pathways, such as apoptosis, angiogenesis, and inflammatory pathways-primarily interleukin 6 (IL-6)/signal transducer and activator of transcription 3 (STAT3), which seems to play a major role in the development of diseases associated with these risk factors...
December 23, 2016: Genes
https://www.readbyqxmd.com/read/28013219/the-role-of-mir-182-5p-in-hepatocarcinogenesis-of-trichloroethylene-in-mice
#13
Yan Jiang, Jiahong Chen, Cong Yue, Hang Zhang, Jian Tong, Jianxiang Li, Tao Chen
Trichloroethylene (TCE), commonly used as an industrial solvent, is ubiquitous in our living environment. TCE exposure can induce hepatocellular carcinoma (HCC) in mice, but the underlying mechanisms remain elusive. To understand the role of miRNA in the hepatocarcinogenesis of TCE, we examined the miRNA expression profiles by microarray in the liver of B6C3F1 male mice exposed to TCE at 0 or 1000 mg/kg b.w.. Nine differentially expressed miRNAs were identified, out of which miR-182-5p exhibited the highest increase in expression...
December 24, 2016: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/28012864/germline-and-somatic-dicer1-mutations-in-familial-and-sporadic-liver-tumors
#14
Stefano Caruso, Julien Calderaro, Eric Letouzé, Jean-Charles Nault, Gabrielle Couchy, Anais Boulais, Alain Luciani, Elie-Serge Zafrani, Paulette Bioulac-Sage, Olivier Seror, Sandrine Imbeaud, Jessica Zucman-Rossi
BACKGROUND & AIMS: Growing evidence suggests that genetic predisposition significantly increases the risk of hepatocellular carcinoma (HCC), independently from the presence of other risk factors. Here, we report a novel germline DICER1 mutation associated with familial recurrent liver tumors. Next, we aimed to investigate the contribution of constitutional and somatic DICER1 mutations on HCC occurrence. METHODS: We investigated two individuals of a family that developed recurrent well-differentiated hepatocellular tumors over the years...
December 21, 2016: Journal of Hepatology
https://www.readbyqxmd.com/read/28006930/systemic-administration-of-mirna-mimics-by-liposomal-delivery-system-in-animal-model-of-colorectal-carcinoma
#15
J Merhautová, P Vychytilová-Faltejsková, R Demlová, O Slabý
MiRNAs are important regulators of gene expression and changes in their levels are linked with various pathological states, including solid tumors. MiR-215 has been identified as a tumor suppressor in colorectal cancer (CRC). Following our previous in vitro and in vivo experiments, the aim of this project was to study the possibility of increasing the levels of miR-215 in tumor cells by systemic administration of miRNA mimics in liposomal delivery system in vivo. By subcutaneous xenotransplantation of human cancer cells to NSG mice, CRC model was established...
December 21, 2016: Physiological Research
https://www.readbyqxmd.com/read/28006867/differential-profile-of-activated-regulatory-t-cell-subsets-and-micrornas-in-tolerant-liver-transplant-recipients
#16
B Revilla-Nuin, A de Bejar, L Martínez-Alarcón, J I Herrero, C M Martínez-Cáceres, P Ramírez, A Baroja-Mazo, J A Pons
: Regulatory T cells (Tregs) play a potential role in operational tolerance in liver transplant patients, and microRNAs (miRNAs) are known to be involved in immunological responses and tolerance. Thus, we analyzed the implication of different peripheral blood Treg subsets and miRNAs on liver transplantation tolerance in 24 tolerant (Tol) and 23 non-tolerant (non-Tol) liver transplant recipients by cellular, genetic and epigenetic approximation. Non-Tol patients had a lower demethylation rate of the FOXP3 Treg-specific demethylated region (TSDR) than Tol patients that correlated with the frequency of circulating Tregs...
December 22, 2016: Liver Transplantation
https://www.readbyqxmd.com/read/28000854/identification-of-microrna-487b-as-a-negative-regulator-of-liver-metastasis-by-regulation-of-kras-in-colorectal-cancer
#17
Tsuyoshi Hata, Yukako Mokutani, Hidekazu Takahashi, Akira Inoue, Koji Munakata, Kazuya Nagata, Naotsugu Haraguchi, Junichi Nishimura, Taishi Hata, Chu Matsuda, Kohei Murata, Tsunekazu Mizushima, Yuichiro Doki, Masaki Mori, Hirofumi Yamamoto
Recent studies have shown that microRNAs (miRNAs) are involved in the progression of colorectal cancer (CRC). The aim of this study is to identify a novel miRNA that especially relates to liver metastasis and to explore the underlying mechanism. Differentially expressed miRNAs were analyzed using microarray, in primary CRC tumors without metastasis (n=16), those with liver metastasis (n=12), and liver metastatic lesions (n=8). We found that miR-487b level decreased in liver metastatic lesions, and qRT-PCR confirmed the results in the validating cohort (n=134)...
December 20, 2016: International Journal of Oncology
https://www.readbyqxmd.com/read/27995171/microrna-expression-analysis-in-the-liver-of-high-fat-diet-induced-obese-mice
#18
Won-Mo Yang, Kyung-Ho Min, Wan Lee
A previous study indicated a causal link between certain miRNAs induced by obesity and the development of hepatic insulin resistance and type 2 diabetes. Here we provide accompanying data collected using Affymetrix GeneChip miRNAs microarrays to identify the changes in miRNAs expression in the liver of mice fed a high fat diet (HFD). Differentially expressed microRNA analyses in the liver of the HFD-fed mice revealed a range of upregulated (>1.5-fold) or downregulated (<0.5-fold) miRNAs. Among those upregulated miRNAs, in silico target analysis, such as TargetScan, PicTar, and miRWalk, identified miRNAs with the putative binding sites on the 3'UTRs of INSR and/or IRS-1...
December 2016: Data in Brief
https://www.readbyqxmd.com/read/27983934/microrna-219-5p-represses-the-proliferation-migration-and-invasion-of-gastric-cancer-cells-by-targeting-the-lrh-1-wnt-%C3%AE-catenin-signaling-pathway
#19
Chunsheng Li, Jingrong Dong, Zhenqi Han, Kai Zhang
MicroRNAs (miRNAs) are reportedly involved in gastric cancer development and progression. In particular, miR-219-5p hasbeen reported to be a tumor-associated miRNA in human cancer. However, the role of miR-219-5p in gastric cancer remains unclear. In this study, we investigated for the first time the potential role and underlying mechanism of miR-219-5p in the proliferation, migration, and invasion of human gastric cancer cells. miR-219-5p was found to be markedly decreased in gastric cancer tissues and cell lines compared with adjacent tissues and normal gastric epithelial cells...
October 27, 2016: Oncology Research
https://www.readbyqxmd.com/read/27956809/disease-specific-mir-34a-as-diagnostic-marker-of-non-alcoholic-steatohepatitis-in-a-chinese-population
#20
Xiao-Lin Liu, Qin Pan, Rui-Nan Zhang, Feng Shen, Shi-Yan Yan, Chao Sun, Zheng-Jie Xu, Yuan-Wen Chen, Jian-Gao Fan
AIM: To assess disease-specific circulating microRNAs (miRNAs) in non-alcoholic steatohepatitis (NASH) patients. METHODS: A total of 111 biopsy-proven non-alcoholic fatty liver disease (NAFLD) or chronic hepatitis B (CHB) patients and healthy controls from mainland China were enrolled to measure their serum levels of miR-122, -125b, -146b, -16, -21, -192, -27b and -34a. The correlations between serum miRNAs and histological features of NAFLD were determined. The diagnostic value of miRNA in NASH and significant fibrosis was analyzed and compared with that of cytokeratin-18 (CK-18), fibrosis-4 (FIB-4), and aspartate aminotransferase to platelet ratio index (APRI), respectively...
November 28, 2016: World Journal of Gastroenterology: WJG
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