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https://www.readbyqxmd.com/read/28319645/the-atypical-genesis-and-bioavailability-of-the-plant-based-small-rna-mir2911-bulking-up-while-breaking-down
#1
Jian Yang, Natee Kongchan, Cecilia Primo Planta, Joel R Neilson, Kendal D Hirschi
SCOPE: The uptake of dietary plant small RNAs (sRNAs) in consumers remains controversial, which is mainly due to low dietary content in combination with poor fractional absorption. MIR2911, among all the plant sRNAs including microRNAs, has been shown to be one of the most robustly absorbed sRNAs. Here we analyze the unusual abundance and unique genesis of MIR2911 during vegetable processing. METHODS AND RESULTS: Using qRT-PCR, the abundance of MIR2911 increased dramatically in macerated tissues while other microRNAs degraded...
March 20, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28319306/microrna-802-plays-a-tumour-suppressive-role-in-tongue-squamous-cell-carcinoma-through-directly-targeting-map2k4
#2
Xiaozhen Wu, Zuode Gong, Lanying Sun, Long Ma, Qibao Wang
OBJECTIVES: Tongue squamous cell carcinoma (TSCC) is the most common oral tumours. MicroRNAs play crucial roles in many cell processes including cell viability, development, apoptosis, migration and invasion. The role of miR-802 in the TSCC is still unknown. MATERIALS AND METHODS: The miR-802 expression in TSCC tissues and cell lines was determined by quantitative real-time polymerase chain reaction. CCK-8 assay was performed to measure the cell viability, while the cell invasion assay was used to determine the cell invasion...
March 20, 2017: Cell Proliferation
https://www.readbyqxmd.com/read/28319198/methamphetamine-induces-shati-nat8l-expression-in-the-mouse-nucleus-accumbens-via-creb-and-dopamine-d1-receptor-dependent-mechanism
#3
Kyosuke Uno, Toh Miyazaki, Kengo Sodeyama, Yoshiaki Miyamoto, Atsumi Nitta
Shati/Nat8L significantly increased in the nucleus accumbens (NAc) of mice after repeated methamphetamine (METH) treatment. We reported that Shati/Nat8L overexpression in mouse NAc attenuated METH-induced hyperlocomotion, locomotor sensitization, and conditioned place preference. We recently found that Shati/Nat8L overexpression in NAc regulates the dopaminergic neuronal system via the activation of group II mGluRs by elevated N-acetylaspartylglutamate following N-acetylaspartate increase due to the overexpression...
2017: PloS One
https://www.readbyqxmd.com/read/28318634/dna-methyltransferase-1-may-be-a-therapy-target-for-attenuating-diabetic-nephropathy-and-podocyte-injury
#4
Li Zhang, Qianmei Zhang, Shuangxin Liu, Yuanhan Chen, Ruizhao Li, Ting Lin, Chunping Yu, Hong Zhang, Zhongshun Huang, Xinchen Zhao, Xiaofan Tan, Zhuo Li, Zhiming Ye, Jianchao Ma, Bin Zhang, Wenjian Wang, Wei Shi, Xinling Liang
The contribution of DNA methylation to diabetic nephropathy, especially the effect on podocyte integrity, is not clarified. Here we found that albuminuria in a db/db mouse model was markedly attenuated after treatment with a DNA methylation inhibitor. This was accompanied by alleviation of glomerular hypertrophy, mesangial matrix expansion, and podocyte injury. The expression of DNA methyltransferase 1 (Dnmt1), nuclear factor Sp1, and nuclear factor kappa B (NFκB)-p65 markedly increased in podocytes in vivo and in vitro under the diabetic state...
March 15, 2017: Kidney International
https://www.readbyqxmd.com/read/28317878/kidney-specific-transposon-mediated-gene-transfer-in-vivo
#5
Lauren E Woodard, Jizhong Cheng, Richard C Welch, Felisha M Williams, Wentian Luo, Leslie S Gewin, Matthew H Wilson
Methods enabling kidney-specific gene transfer in adult mice are needed to develop new therapies for kidney disease. We attempted kidney-specific gene transfer following hydrodynamic tail vein injection using the kidney-specific podocin and gamma-glutamyl transferase promoters, but found expression primarily in the liver. In order to achieve kidney-specific transgene expression, we tested direct hydrodynamic injection of a DNA solution into the renal pelvis and found that luciferase expression was strong in the kidney and absent from extra-renal tissues...
March 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28317862/biological-activity-of-masked-endotoxin
#6
Harald Schwarz, Jan Gornicec, Theresa Neuper, Maria Alejandra Parigiani, Michael Wallner, Albert Duschl, Jutta Horejs-Hoeck
Low endotoxin recovery (LER) is a recently discovered phenomenon describing the inability of limulus amebocyte lysate (LAL)-based assays to detect lipopolysaccharide (LPS) because of a "masking effect" caused by chelators or detergents commonly used in buffer formulations for medical products and recombinant proteins. This study investigates the masking capacities of different buffer formulations and whether masked endotoxin is biologically active. We show that both naturally occurring endotoxin as well as control standard endotoxin can be affected by LER...
March 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28317463/expression-of-a-morn-repeat-protein-from-euplotes-octocarinatus-requires-a-1-programmed-ribosomal-frameshifting
#7
Lili Wei, Xuemei Zhao, Ruanlin Wang, Yuejun Fu, Baofeng Chai, Aihua Liang
Analysis of transcriptome revealed that a membrane occupation and recognition nexus (MORN) repeat protein-encoding gene of Euplotes octocarinatus (Eo-morn-9-31) was a candidate for programmed +1 ribosomal frameshifting (+1 PRF). In this study, a dual-luciferase assay was performed to detect its expression. The result showed that the MORN repeat protein (Eo-MORN-9-31) could be produced by the +1 PRF event during the process of translation in yeast and the frameshifting efficiency was about 4-5%. We further confirmed its reality by western blot and mass spectrometry...
March 20, 2017: Bioscience, Biotechnology, and Biochemistry
https://www.readbyqxmd.com/read/28317368/mir-186-inhibited-migration-of-nsclc-via-targeting-cdc42-and-effecting-emt-process
#8
Ying Dong, Xintian Jin, Zhiqiang Sun, Yueming Zhao, Xianjing Song
In this study, qRT-PCR was employed to identify that miR-186 expression level in NSCLC tissues are highly associated with lymph node metastasis. In addition, through the application of western blotting, luciferase assay and qRT-PCR, it was found that miR-186 targeted 3'UTR of cdc42 mRNA and down-regulated cdc42 protein level in a post-transcriptional manner. Transwell assay indicated that cdc42 partially reversed the effect of miR-186 mimics. Besides, miR-186 was proved to regulate EMT by influencing biomarkers of this process and cell adhesion ability...
March 20, 2017: Molecules and Cells
https://www.readbyqxmd.com/read/28317323/a-functional-snp-regulated-by-mir-196a-3p-in-the-3-utr-of-fgf2-is-associated-with-bone-mineral-density-in-the-chinese-population
#9
Dong-Li Zhu, Yan Guo, Yan Zhang, Shan-Shan Dong, Wen Xu, Ruo-Han Hao, Xiao-Feng Chen, Han Yan, Shui-Yun Yang, Tie-Lin Yang
Previous studies have identified FGF2 as a susceptibility gene for osteoporosis in Caucasians. Evaluating the genetic associations in different ethnicities is necessary. Moreover, elucidating the functional mechanism for the susceptibility loci is important to offer new targets for therapeutic studies. Here, we genotyped ten SNPs in FGF2 and tested for associations with bone mineral density (BMD) in a discovery sample of 1300 Chinese subjects. Nominally significant results were subjected to replication in another sample of 1039 Chinese subjects...
March 19, 2017: Human Mutation
https://www.readbyqxmd.com/read/28317284/mir-320a-regulates-high-mobility-group-box-1%C3%A2-expression-and-inhibits-invasion-and-metastasis-in-hepatocellular-carcinoma
#10
Guixiang Lv, Mingjuan Wu, Meijie Wang, Xiaochen Jiang, Jingli Du, Kaili Zhang, Dongliang Li, Ning Ma, Yahui Peng, Lujing Wang, Lingyun Zhou, Weiming Zhao, Yufei Jiao, Xu Gao, Zheng Hu
BACKGROUND & AIMS: Several studies have shown that miR-320a induces apoptosis, inhibits cell proliferation, and affects cell cycle progression as a tumor suppressor in many cancers. However, the involvement of miR-320a in the invasion and metastasis of hepatocellular carcinoma (HCC) is still unknown. METHODS: Endogenous miR-320a and high mobility group box 1 (HMGB1) expressions were assayed by real-time PCR. Luciferase activities were measured using a dual-luciferase reporter assay system...
March 19, 2017: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/28316371/znf395-is-an-activator-of-a-subset-of-ifn-stimulated-genes
#11
Linda Schroeder, Christine Herwartz, Darko Jordanovski, Gertrud Steger
Activation of the interferon (IFN) pathway in response to infection with pathogens results in the induction of IFN-stimulated genes (ISGs) including proinflammatory cytokines, which mount the proper antiviral immune response. However, aberrant expression of these genes is pathogenic to the host. In addition to IFN-induced transcription factors non-IFN-regulated factors contribute to the transcriptional control of ISGs. Here, we show by genome wide expression analysis, siRNA-mediated suppression and Doxycycline-induced overexpression that the cellular transcription factor ZNF395 activates a subset of ISGs including the chemokines CXCL10 and CXCL11 in keratinocytes...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/28315683/klotho-ameliorates-cyclosporine-a-induced-nephropathy-via-pdlim2-nf-kb-p65-signaling-pathway
#12
Meihua Jin, Pengfei Lv, Guanyu Chen, Peng Wang, Zhongfu Zuo, Lili Ren, Jing Bi, Chul-Woo Yang, Xifan Mei, Donghe Han
Klotho, an antiaging protein, can extend the lifespan and modulate cellular responses to inflammation and oxidative stress which can ameliorate chronic kidney diseases (CKD). To investigate the molecular mechanism of Klotho on inflammation in cyclosporine A (CsA) induced nephropathy, the mice were transfected with adenovirus mediated Klotho gene and treated with cyclosporine A (CsA; 30 mg/kg/day) for 4 weeks. Also, primary human renal proximal tubule epithelial cells (RPTECs) were treated with soluble Klotho protein and LPS...
March 15, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28315384/the-absorption-enhancer-sodium-deoxycholate-promotes-high-gene-transfer-in-skeletal-muscles
#13
Christian Leborgne, Debborah Alimi-Guez, Nelly El Shafey, Laetitia van Wittenberghe, Pascal Bigey, Daniel Scherman, Antoine Kichler
Gene delivery to skeletal muscle is a promising strategy for the treatment of muscle disorders and for the systemic secretion of therapeutic proteins. In addition, muscle is an attractive target tissue because it is easily accessible. However, very few synthetic vectors proved capable of surpassing naked DNA mediated muscle gene transfer. In fact, only neutral copolymers, in particular poloxamers, demonstrated capacities to increase transgene expression in skeletal muscles. Here, we studied in vitro and in vivo behaviour of different bile salts...
March 14, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28315330/microrna-29-regulates-myocardial-microvascular-endothelial-cells-proliferation-and-migration-in-association-with-igf1-in-type-2-diabetes
#14
Zhenjie Li, Qingcai Yue, Haiying Peng
BACKGROUND: In our study, we investigated the expression and function of microRNA-29 in myocardial microvascular endothelial cells (MMEVC) in type 2 diabetic Goto-Kakizaki (GK) rats. METHODS: MiR-29 gene expression was compared, by qRT-PCR between diabetic GK rat MMEVC and non-diabetic Wistar rat MMEVC. MiR-29 was downregulated in GK MMEVC and its effect on angiogenic properties of proliferation and migration was examined. Potential downstream target gene of miR-29, insulin growth factor 1 (IGF1), was assessed by dual-luciferase reporter assay, qRT-PCR and western blot in GK MMEVC...
March 15, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28315290/uca1-regulates-the-growth-and-metastasis-of-pancreatic-cancer-by-sponging-mir-135a
#15
Xiaobo Zhang, Feng Gao, Lei Zhou, Huaitao Wang, Gang Shi, Xiaodong Tan
Pancreatic cancer (PC) is a devastating malignant disease with poor prognosis. This study is aimed to investigate the role of urothelial carcinoma associated 1(UCA1) in the progression of PC. Our results revealed that long non-coding RNAs (lncRNAs)-UCA1 was overexpressed in PC tissues compared with adjacent histologically normal tissues. Down-regulated level of UCA1 was also detected in five human pancreatic cancer cell lines (SW1990,BxPC-3, MiaPaCa-2, PANC-1, CAPAN-1) compared with normal pancreatic duct epithelial HPDE cells...
March 7, 2017: Oncology Research
https://www.readbyqxmd.com/read/28315218/use-of-humanized-rs-atl8-reporter-system-for-detection-of-allergen-specific-ige-sensitization-in-human-food-allergy
#16
Eman Ali Ali, Ryosuke Nakamura, Franco H Falcone
Allergen-specific Immunoglobulin E (IgE) determination lies at the heart of diagnosis of sensitization to food and other allergens. In the past few years, reporter systems capable of detecting the presence of allergen-specific IgE have been developed by several labs. These rely on humanized rat basophil leukemia cell lines stably transfected with reporter genes such as firefly luciferase. In this chapter, we describe protocols for the use of the RS-ATL8 cell line (IgE cross-linking-induced luciferase expression; EXiLE) in 96-well and 384-well formats...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28314853/activation-of-the-orphan-g-protein-coupled-receptor-gpr27-by-surrogate-ligands-promotes-%C3%AE-arrestin-2-recruitment
#17
Nadine Dupuis, Celine Laschet, Delphine Franssen, Martyna Szpakowska, Julie Gilissen, Pierre Geubelle, Arvind Soni, Anne-Simone Parent, Bernard Pirotte, Andy Chevigne, Jean-Claude Twizere, Julien Hanson
G protein-coupled receptors are the most important drug targets for human diseases. An important number of them remain devoid of confirmed ligands. GPR27 is one of these orphan receptors, characterized by a high level of conservation among vertebrates and a predominant expression in the central nervous system. In addition, it has recently been linked to insulin secretion. However, the absence of endogenous or surrogate ligands for GPR27 complicates the examination of its biological function. Our aim was to validate GPR27 signaling pathways and therefore we sought to screen a diversity oriented synthesis library to identify GPR27-specific surrogate agonists...
March 17, 2017: Molecular Pharmacology
https://www.readbyqxmd.com/read/28314444/pdk1-promotes-the-inflammatory-progress-of-fibroblast-like-synoviocytes-by-phosphorylating-rsk2
#18
Chi Sun, Yu Sun, Dingjun Jiang, Guofeng Bao, Xinhui Zhu, Dawei Xu, Youhua Wang, Zhiming Cui
This study investigated the role of PDK1 in inflammatory response which is initiated by TNF-α and analyzed the association between PDK1 and RSK2. TNF-α were added into MH7A cells to induce inflammation condition. Through overexpressing or suppressing PDK1 in MH7A cells, the role of PDK1 in cell invasiveness and inflammatory factors was determined. Levels of MMPs protein and inflammatory cytokines were assessed with PDK1 siRNA and TNF-α treatment. Inhibition of RSK2 was used to investigate the function of RSK2 on PDK1-induced inflammation...
November 1, 2016: Cellular Immunology
https://www.readbyqxmd.com/read/28314201/inhibition-of-mirna-212-132-improves-the-reprogramming-of-fibroblasts-into-induced-pluripotent-stem-cells-by-de-repressing-important-epigenetic-remodelling-factors
#19
Nils Pfaff, Steffi Liebhaber, Selina Möbus, Abbas Beh-Pajooh, Jan Fiedler, Angelika Pfanne, Axel Schambach, Thomas Thum, Tobias Cantz, Thomas Moritz
MicroRNAs (miRNAs) repeatedly have been demonstrated to play important roles in the generation of induced pluripotent stem cells (iPSCs). To further elucidate the molecular mechanisms underlying transcription factor-mediated reprogramming we have established a model, which allows for the efficient screening of whole libraries of miRNAs modulating the generation of iPSCs from murine embryonic fibroblasts. Applying this model, we identified 14 miRNAs effectively inhibiting iPSC generation, including miR-132 and miR-212...
March 7, 2017: Stem Cell Research
https://www.readbyqxmd.com/read/28304379/development-of-bioluminescent-chick-chorioallantoic-membrane-cam-models-for-primary-pancreatic-cancer-cells-a-platform-for-drug-testing
#20
Maria Rovithi, Amir Avan, Niccola Funel, Leticia G Leon, Valentina E Gomez, Thomas Wurdinger, Arjan W Griffioen, Henk M W Verheul, Elisa Giovannetti
The aim of the present study was to develop chick-embryo chorioallantoic membrane (CAM) bioluminescent tumor models employing low passage cell cultures obtained from primary pancreatic ductal adenocarcinoma (PDAC) cells. Primary PDAC cells transduced with lentivirus expressing Firefly-luciferase (Fluc) were established and inoculated onto the CAM membrane, with >80% engraftment. Fluc signal reliably correlated with tumor growth. Tumor features were evaluated by immunohistochemistry and genetic analyses, including analysis of mutations and mRNA expression of PDAC pivotal genes, as well as microRNA (miRNA) profiling...
March 17, 2017: Scientific Reports
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