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Lei Li, Xiao Li, Xin Huang, Weilai Jiang, Letian Liu, Chunning Hou, Yanqing Yang, Lei Zhang, Xiaodan Zhang, Longwei Ye, Jie Yuan, Guolin Li, Haiming Sun, Limin Mao
We introduced polyethyleneimine-cholesterol (PC) as a nanocarrier incorporating berberine (BER) and miRNA122 (miR-122) for the treatment of oral squamous cell carcinoma. BER was stabilized by incorporating PC to form ber -PC. Ber -PC was further electrostatically complexed with miR-122 to yield mr-ber- PC for the co-delivery of BER and miR-122. mr-ber- PC treatment dramatically decreased the level of invasion and migration of oral squamous cell carcinoma cells compared with single drug treatments. This study suggested that PC could be a multifunctional nanocarrier for the co-delivery of anti-cancer drug BER and miR-122 to significantly increase the anti-cancer therapeutic effects...
May 16, 2018: Bioscience Reports
A L Baron, A Schoeniger, P Becher, C Baechlein
In recent years, hepatitis C virus (HCV)-related viruses were identified in several species including dogs, horses, bats and rodents. Additionally, a novel virus of the genus Hepacivirus has been discovered in bovine samples and was termed bovine hepacivirus (BovHepV). Prediction of the BovHepV IRES (internal ribosome entry site) structure revealed strong similarities to the HCV IRES structure comprising domains II, IIIabcde, pseudoknot IIIf and domain IV with the initiation codon AUG. Unlike HCV, only one microRNA-122 (miR-122) binding site could be identified in the BovHepV 5' NTR...
May 16, 2018: Journal of Virology
Junfa Yang, Changyao Li, Lei Zhang, Xiao Wang
Extracellular vesicles (EVs) are small membranous vesicles secreted from normal, diseased, and transformed cells in vitro and in vivo . EVs have been found to play a critical role in cell-to-cell communication by transferring non-coding RNAs (ncRNAs) including microRNAs (miRNAs), long ncRNAs (lncRNAs) and so on. Emerging evidence shows that transferring biological information through EVs to neighboring cells in intercellular communication not only keep physiological functions, but also participate in the pathogenesis of liver diseases...
2018: Frontiers in Pharmacology
Ben Francis, Joanna I Clarke, Lauren E Walker, Nathalie Brillant, Andrea L Jorgensen, B Kevin Park, Munir Pirmohamed, Daniel J Antoine
BACKGROUND & AIMS: The potential of mechanistic biomarkers to improve the prediction of drug-induced liver injury (DILI) and hepatic regeneration is widely acknowledged. We sought to determine reference intervals for new biomarkers of DILI and regeneration as well as to characterize their natural variability and impact of diurnal variation. METHODS: Serum samples from 200 healthy volunteers were recruited as part of a cross sectional study; of these, 50 subjects had weekly serial sampling over 3 weeks, while 24 had intensive blood sampling over a 24h period...
May 2, 2018: Journal of Hepatology
Veronica Sansoni, Silvia Perego, Gianluca Vernillo, Andrea Barbuti, Giampiero Merati, Antonio La Torre, Giuseppe Banfi, Giovanni Lombardi
Repeated-sprint training (RS, short-duration sprints at supramaximal intensities interspersed with brief recoveries) is a time-saving metabolically effective strategy whose effects on bone are unknown. Bone metabolism is a finely regulated process profoundly affected by exercise as assayable by studying specific systemic (e.g., hormones, cytokines) and bone-derived molecules (e.g., bone markers, miRNAs). Aim of this study was to determine the effect of a 8-week repeated-sprint on circulating levels of fracture risk-associated miRNA...
April 6, 2018: Oncotarget
Dong Guo, Ji Ma, Tengfei Li, Lei Yan
Dysfunction of the microRNA (miR) network has been emerging as a main regulator in ischemic stroke. Recently, studies have linked the deregulation of miR-122 to ischemic stroke. However, the specific role and molecular mechanism of miR-122 in ischemic stroke remain to be further investigated. Here, we found that miR-122 was decreased in mouse N2A neuroblastoma (N2A) cells after oxygen-glucose deprivation (OGD) and mouse brain after transient middle cerebral artery occlusion (MCAO). OGD treatment significantly increased N2A cell death and Caspase-3 activity, and decreased Bcl-2 protein expression...
April 28, 2018: Experimental Cell Research
Fang-Ni Chai, Wen-Yu Ma, Jian Zhang, He-Shan Xu, Yuan-Feng Li, Qi-De Zhou, Xue-Gang Li, Xiao-Li Ye
With increasing incidence and mortality, hepatocellular carcinoma (HCC) is one of the leading causes of cancer-related deaths worldwide. In this study, microRNA-122 (miR-122) mimics and relevant control oligonucleotides were transfected into HepG2 cells in vitro, followed by coptisine (COP) and sorafenib treatments. Cell proliferation, migration, and apoptosis were evaluated by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay and colony formation assay, wound-healing assay, Hoechst 33258 staining and flow cytometry, respectively...
April 24, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
Francesca Th'ng, Bastiaan Vliegenthart, Jonathan D Lea, Daniel J Antoine, James W Dear, Damian J Mole
OBJECTIVE: To obtain pilot data to evaluate the discriminatory power of biomarkers microRNA-122 (miR-122), high-mobility group box 1 (HMGB1), full-length keratin-18 (flk-18) and caspase-cleaved keratin-18 (cck-18) in plasma to identify potential biliary complications that may require acute intervention. DESIGN: An observational biomarker cohort pilot study. SETTING: In a Scottish University teaching hospital for 12 months beginning on 3 September 2014...
April 27, 2018: BMJ Open
Kohei Taniguchi, Nobuhiko Sugito, Haruka Shinohara, Yuki Kuranaga, Yosuke Inomata, Kazumasa Komura, Kazuhisa Uchiyama, Yukihiro Akao
Pyruvate kinase is known as the glycolytic enzyme catalyzing the final step in glycolysis. In mammals, two different forms of it exist, i.e., pyruvate kinase M1/2 ( PKM ) and pyruvate kinase L/R ( PKLR ). Also, PKM has two isoforms, i.e., PKM1 and PKM2 . These genes have tissue-specific distribution. Namely, PKM1 is distributed in high-energy-demanding organs, such as brain and muscle. Also, PKM2 is distributed in various other organs, such as the colon. On the other hand, PKLR is distributed in liver and red blood cells (RBCs)...
April 24, 2018: International Journal of Molecular Sciences
Yan Yang, Qing Li, Lili Guo
Nasopharyngeal carcinoma (NPC) is endemic in the southern provinces of China and Southeast Asia. It has been reported that microRNA‑122 (miR‑122) and tripartite motif‑containing protein 29 (TRIM29) serve important roles in many types of tumor. The present study aimed to evaluate the expression of miR‑122 and TRIM29, and their clinical significance in NPC, and to examine the associated molecular mechanisms. It was observed that low expression of miR‑122 and high expression of TRIM29 led to a low overall survival rate in patients with NPC, which was associated with tumor‑node‑metastasis (TNM) stage and distant metastasis of NPC...
April 19, 2018: Molecular Medicine Reports
Chunyan Tu, Tieshuai Du, Chengchen Shao, Zengjia Liu, Liliang Li, Yiwen Shen
The precise estimation of postmortem interval (PMI) is a critical step in death investigation of forensic cases. Detecting the degradation of RNA in tissues by real time quantitative polymerase chain reaction (RT-qPCR) technology provides a new theoretical basis for estimation of PMI. However, most commonly used reference genes degrade over time, while previous studies seldom consider this when selecting suitable reference genes for the estimation of PMI. Studies have shown microRNAs (miRNAs) are very stable and circular RNAs (circRNAs) have recently emerged as a novel class of RNAs with high stability...
April 24, 2018: Forensic Science, Medicine, and Pathology
L-K Li, Z-H Kong
OBJECTIVE: With gradual increase of cancer incidence and mortality rates, the regulatory mechanism of cancer has become a hotspot. It has been known that the expression of TP53 is closely associated with the occurrence of cancer. The microRNA (miRNA)-mediated regulation of the expression of numerous proto-oncogenes has been reported. This study aimed to identify miRNAs that regulate the expression of TP53 gene. MATERIALS AND METHODS: The sequence of TP53 gene was downloaded from NCBI and analyzed with TargetScan software to predict potential miRNAs that regulate TP53 expression...
April 2018: European Review for Medical and Pharmacological Sciences
P Micó-Martínez, J-L García-Giménez, M Seco-Cervera, A López-Roldán, P-J Almiñana-Pastor, F Alpiste-Illueca, F-V Pallardó
BACKGROUND: The study and identification of new biomarkers for periodontal disease, such as microRNAs (miRNAs), may give us more information about the location and severity of the disease and will serve as a basis for treatment planning and disease-monitoring. miRNAs are a group of small RNAs which are involved in gene regulation by binding to their messenger RNA target (mRNA). In this pilot study, the procedure for purifying miRNAs from gingival crevicular fluid (GCF) was, for the first time, described...
May 1, 2018: Medicina Oral, Patología Oral y Cirugía Bucal
Yalena Amador-Cañizares, Annie Bernier, Joyce A Wilson, Selena M Sagan
Hepatitis C virus (HCV) recruits two molecules of the liver-specific microRNA-122 (miR-122) to the 5' end of its genome. This interaction promotes viral RNA accumulation, but the precise mechanism(s) remain incompletely understood. Previous studies suggest that miR-122 is able to protect the HCV genome from 5' exonucleases (Xrn1/2), but this protection is not sufficient to account for the effect of miR-122 on HCV RNA accumulation. Thus, we investigated whether miR-122 was also able to protect the viral genome from innate sensors of RNA or cellular pyrophosphatases...
April 17, 2018: Nucleic Acids Research
Ngo Tat Trung, Dang Chieu Duong, Hoang Van Tong, Tran Thi Thu Hien, Phan Quoc Hoan, Mai Hong Bang, Mai Thanh Binh, Thai Doan Ky, Nguyen Lam Tung, Nguyen Tien Thinh, Vu Viet Sang, Le Thi Phuong Thao, C-Thomas Bock, Thirumalaisamy P Velavan, Christian G Meyer, Le Huu Song, Nguyen Linh Toan
BACKGROUND: Circulating microRNAs (miRNA) are biomarkers for several neoplastic diseases, including hepatocellular carcinoma (HCC). We performed a literature search, followed by experimental screening and validation in order to establish a miRNA panel in combination with the assessment of alpha-fetoprotein (AFP) levels and to evaluate its performance in HCC diagnostics. METHODS: Expression of miRNAs was quantified by quantitative PCR (qPCR) in 406 serum samples from 118 Vietnamese patients with hepatitis B (HBV)-related HCC, 69 patients with HBV-related liver cirrhosis (LC), 100 chronic hepatitis B (CHB) patients and 119 healthy controls (HC)...
2018: PloS One
Yanchun Zhou, Xiuhua Meng, Shaoying Chen, Wei Li, Delin Li, Robert Singer, Wei Gu
BACKGROUND: Long noncoding RNAs (LncRNAs) represent a class of widespread and diverse endogenous RNAs that can posttranscriptionally regulate gene expression through the interaction with RNA-binding proteins and micro RNAs (miRNAs). Here, we report that in breast carcinoma cells, the insulin-like growth factor 2 messenger RNA binding protein (IMP1) binds to lncRNA urethral carcinoma-associated 1 (UCA1) and suppresses the UCA1-induced invasive phenotype. METHODS: RT-qPCR and RNA sequence assays were used to investigate the expression of UCA1 and miRNAs in breast cancer cells in response to IMP1 expression...
April 18, 2018: Breast Cancer Research: BCR
Choudhary Shoaib Ahmed, Poppy L Winlow, Aimee L Parsons, Catherine L Jopling
Hepatitis C virus (HCV) is a positive sense RNA virus that persistently infects human liver, leading to cirrhosis and hepatocellular carcinoma. HCV replication requires the liver-specific microRNA-122 (miR-122). In contrast to canonical miRNA-mediated repression via 3'UTR sites, miR-122 positively regulates HCV replication by a direct interaction with the 5' untranslated region (UTR) of the viral RNA. The protein factor requirements for this unusual miRNA regulation remain poorly understood. Here, we identify eIF4AII, previously implicated in miRNA-mediated repression via 3'UTR sites, as a host factor that is important for HCV replication...
April 14, 2018: Nucleic Acids Research
Hui Xu, Jie-Hua He, Shi-Jun Xu, Shu-Juan Xie, Li-Ming Ma, Yin Zhang, Hui Zhou, Liang-Hu Qu
Cut-like homeobox 1 (CUX1) is a highly conserved homeoprotein that functions as a transcriptional repressor of genes specifying terminal differentiation. We previously showed that liver-specific microRNA-122 (miR-122) regulates the timing of liver development by silencing CUX1 post-transcriptionally. Since the CUX1 protein is expressed in a subset of embryonic tissues, we hypothesized that it is regulated by specific microRNAs (miRNAs) in each cell type during development. Using a large-scale screening method, we identified ten tissue-specific miRNAs from different cell lineages that directly targeted CUX1...
April 16, 2018: Journal of Cellular Biochemistry
Yanli Liu, Feima Wu, Dong Liu, Ruzhi Wei, Nasir Abbas, Jianhong Xia, Dongwei Li, Haiyun Wang, Yuanqi Zhuang, Dongsheng Guo, Yan Chen, Yuhang Wu, Xinrong Ke, Jiawang Tao, Fan Yang, Keyu Lai, Xiaodong Shu, Yin-Xiong Li
MiR-122 is the most abundant miRNA in the human liver accounting for 52% of the entire hepatic miRNome. Previous studies have demonstrated that miR-122 is a valuable therapeutic target for liver diseases, including viral hepatitis, fibrosis, steatosis, and hepatocarcinoma. Here, we constructed a miR-122 doxycycline-inducible expression human embryonic stem cell line WAe001-A-15 using the piggyBac transposon system. The cell line retained its pluripotency, in vitro differentiation potential, normal morphology, and karyotype...
March 23, 2018: Stem Cell Research
Ting-Juan Zhang, Zhen Qian, Xiang-Mei Wen, Jing-Dong Zhou, Xi-Xi Li, Zi-Jun Xu, Ji-Chun Ma, Zhi-Hui Zhang, Jiang Lin, Jun Qian
BACKGROUND: The liver-enriched microRNA-122 (miR-122) plays a crucial role in pathogenesis of hepatocellular carcinoma (HCC) with prognostic value. Recently, miR-122 was also found to be related to many other cancers besides HCC. However, less study determined miR-122 expression and its clinical significance in acute myeloid leukemia (AML). METHODS: Real-time quantitative PCR was performed to detect the level of bone marrow (BM) miR-122 in de novo AML patients. The clinical significance of miR-122 expression in AML was further investigated...
April 3, 2018: Pathology, Research and Practice
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