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https://www.readbyqxmd.com/read/27922090/mir-146a-mediated-suppression-of-the-inflammatory-response-in-human-adipocytes
#1
Julian Roos, Eveliina Enlund, Jan-Bernd Funcke, Daniel Tews, Karlheinz Holzmann, Klaus-Michael Debatin, Martin Wabitsch, Pamela Fischer-Posovszky
The obesity-associated inflammation of white adipose tissue (WAT) is one of the factors leading to the development of related diseases such as insulin resistance and liver steatosis. Recently, microRNAs (miRNAs) were identified as important regulators of WAT functions. Herein, we cultured human Simpson-Golabi-Behmel syndrome (SGBS) adipocytes with macrophage-conditioned medium (MacCM) and performed an Affimetrix miRNA array to identify miRNAs differentially expressed under inflammatory conditions. We identified 24 miRNAs differentially expressed upon inflammation in human adipocytes and miR-146a was the most up-regulated miRNA species...
December 6, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27921263/overexpression-of-protein-phosphatase-1%C3%AE-pp1%C3%AE-is-associated-with-enhanced-cell-proliferation-and-poor-prognosis-in-hepatocellular-carcinoma
#2
Chunsun Li, Miaomiao Wu, Guijuan Zong, Chunhua Wan, Qingqing Liu, Huiling Zhou, Lu Hua, Yuyan Chen, Xudong Chen, Cuihua Lu
BACKGROUND: Protein phosphatase 1γ (PP1γ), as a member of the protein phosphatase 1 family, may be involved in regulation of multiple cellular processes, such as mitosis, cell survival, and apoptosis. However, little is known about the underlying mechanisms by which PP1γ regulates hepatocellular carcinoma development. AIM: We investigated the expression profile of PP1γ in hepatocellular carcinoma (HCC) cell lines and human HCC specimens, as well as its potential prognostic significance in HCC...
December 5, 2016: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/27921232/biological-function-and-mechanism-of-mir-33a-in-prostate-cancer-survival-and-metastasis-via-downregulating-engrailed-2
#3
Q Li, S Lu, X Li, G Hou, L Yan, W Zhang, B Qiao
OBJECTIVE: Recent studies have identified Engrailed-2 (EN-2), a homeobox-containing transcription factor, as a candidate oncogene in prostate cancer (PC). Therapeutic targeting on EN-2, however, is limited because the mechanism underlying EN-2 overexpression in prostatic cancer cells is unknown. This study was to investigate the potential regulatory role of miR-33a on EN-2 expression and explore this signaling axis in ability of prostate cancer survival and metastasis. METHODS: The relative expression of miR-33a and EN-2 in paired prostate cancer tissue and adjacent normal tissue as well as in prostate cancer cell lines, PC3 and DU145, was determined using quantitative real-time PCR or western blot, respectively...
December 5, 2016: Clinical & Translational Oncology
https://www.readbyqxmd.com/read/27921110/multifunctional-pei-entrapped-gold-nanoparticles-enable-efficient-delivery-of-therapeutic-sirna-into-glioblastoma-cells
#4
Lingdan Kong, Jieru Qiu, Wenjie Sun, Jia Yang, Mingwu Shen, Lu Wang, Xiangyang Shi
RNA interference (RNAi) has been considered as a promising strategy for effective treatment of cancer. However, the easy degradation of small interfering RNA (siRNA) limits its extensive applications in gene therapy. For safe and effective delivery of siRNA, a novel vector system possessing excellent biocompatibility, highly efficient transfection efficiency and specific targeting properties has to be considered. In this study, we report the use of polyethyleneimine (PEI)-entrapped gold nanoparticles (Au PENPs) modified with an arginine-glycine-aspartic (Arg-Gly-Asp, RGD) peptide via a poly(ethylene glycol) (PEG) spacer as a vector for Bcl-2 (B-cell lymphoma-2) siRNA delivery to glioblastoma cells...
December 6, 2016: Biomaterials Science
https://www.readbyqxmd.com/read/27920947/the-daniel-k-inouye-college-of-pharmacy-scripts-poha-berry-physalis-peruviana-with-potential-anti-inflammatory-and-cancer-prevention-activities
#5
Leng Chee Chang, Mayuramas Sang-Ngern, John M Pezzuto, Carolyn Ma
The Daniel K. Inouye College of Pharmacy, during a historic event in Spring 2016, graduated the first two students in the Pacific region to earn a PhD in pharmaceutical sciences at the University of Hawai'i at Hilo. The college offers PhD programs in these five disciplines: Cancer Biology, Medicinal Chemistry, Pharmaceutics, Pharmacognosy, and Pharmacology. One of the Pharmacognosy dissertations focused on plant-derived natural products with potential anti-inflammatory and cancer chemopreventive activities...
November 2016: Hawai'i Journal of Medicine & Public Health: a Journal of Asia Pacific Medicine & Public Health
https://www.readbyqxmd.com/read/27920818/exposition-of-hepatitis-b-surface-antigen-hbsag-on-the-surface-of-hek293t-cell-and-evaluation-of-its-expression
#6
Mina Mirian, Razieh Taghizadeh, Hossein Khanahmad, Mansour Salehi, Ali Jahanian-Najafabadi, Hojjat Sadeghi-Aliabadi, Shirin Kouhpayeh
Hepatitis B virus (HBV) is considered as a global health concern and hepatitis B surface antigen (HBsAg) is the most immunogenic protein of HBV. The purpose of this study was to evaluate the expression of HBsAg on the cell surface of human embryonic kidney cell line (HEK293T). After transformation of expression vector pcDNA/HBsAg to E.coli TOP10F', plasmid was extracted and digested with BglII. Afterwards, the linearized vector was transfected to cells and treated with hygromycin B for 5 weeks to expand the resulted clonies...
October 2016: Research in Pharmaceutical Sciences
https://www.readbyqxmd.com/read/27920554/next-generation-sequence-detects-arap3-as-a-novel-oncogene-in-papillary-thyroid-carcinoma
#7
Qing-Xuan Wang, En-Dong Chen, Ye-Feng Cai, Yi-Li Zhou, Zhou-Ci Zheng, Ying-Hao Wang, Yi-Xiang Jin, Wen-Xu Jin, Xiao-Hua Zhang, Ou-Chen Wang
PURPOSE: Thyroid cancer is the most frequent malignancies of the endocrine system, and it has became the fastest growing type of cancer worldwide. Much still remains unknown about the molecular mechanisms of thyroid cancer. Studies have found that some certain relationship between ARAP3 and human cancer. However, the role of ARAP3 in thyroid cancer has not been well explained. This study aimed to investigate the role of ARAP3 gene in papillary thyroid carcinoma. METHODS: Whole exon sequence and whole genome sequence of primary papillary thyroid carcinoma (PTC) samples and matched adjacent normal thyroid tissue samples were performed and then bioinformatics analysis was carried out...
2016: OncoTargets and Therapy
https://www.readbyqxmd.com/read/27920533/effect-of-inserted-spacer-in-hepatic-cell-penetrating-multifunctional-peptide-component-on-the-dna-intracellular-delivery-of-quaternary-complexes-based-on-modular-design
#8
Luchen Zhang, Zhenbo Li, Fangli Sun, Yuhong Xu, Zixiu Du
A safe and efficient quaternary gene delivery system (named Q-complexes) was constructed based on self-assembly of molecules through noncovalent bonds. This system was formulated through the cooperation and competing interactions of cationic liposomes, multifunctional peptides, and DNA, followed by coating hyaluronic acid on the surface of the ternary complexes. The multifunctional peptide was composed of two functional domains: penetrating hepatic tumor-targeted cell moiety (KRPTMRFRYTWNPMK) and a wrapping gene sequence (polyarginine 16)...
2016: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/27920500/design-synthesis-and-evaluation-of-vegf-sirna-crs-as-a-novel-vector-for-gene-delivery
#9
Wen Zhao, Yifan Zhang, Xueyun Jiang, Chunying Cui
Small interfering RNA (siRNA) delivery is a prospective method in gene therapy, but it has application limitations such as negative charge, water solubility and high molecular weight. In this study, a safe and efficient nano-vector, CRS, was designed and synthesized to facilitate siRNA delivery. Physical and chemical properties of VEGF-siRNA/CRS were characterized by methods including scanning electron microscopy (SEM), transmission electron microscopy, zeta potential (ζ) measurement, drug-releasing rate measurement, gel electrophoresis and confocal microscopy...
2016: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/27920474/hepatitis-b-virus-upregulates-host-expression-of-%C3%AE-1-2-mannosidases-via-the-ppar%C3%AE-pathway
#10
Song Hu, Li-Bin Jiang, Xiao-Jing Zou, Wei Yi, De-Ying Tian
AIM: To assess the effects of hepatitis B virus (HBV) on the expression of host α-1,2-mannosidases and determine the underlying mechanisms. METHODS: We measured the expression levels of MAN1A1, MAN1A2, MAN1B1, and MAN1C1 in cell lines HepG2.2.15, HepN10, HepAD38 and HepG2 by Western blot. Viral antigens (HBsAg and HBeAg) in the culture medium were measured using the chemiluminescence method. HBV DNA quantification assays were performed using a commercial real-time PCR kit...
November 21, 2016: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/27920204/studies-on-the-detection-expression-glycosylation-dimerization-and-ligand-binding-properties-of-mouse-siglec-e
#11
Shoib Siddiqui, Flavio Schwarz, Stevan Springer, Zahra Khedri, Hai Yu, Lingquan Deng, Andrea Verhagen, Yuko Naito-Matsui, Weiping Jiang, Daniel Kim, Jie Zhou, Beibei Ding, Xi Chen, Nissi Varki, Ajit Varki
CD33-related Siglecs are a family of proteins widely expressed on innate immune cells. Binding of sialylated glycans or other ligands triggers signals that inhibit or activate inflammation. Immunomodulation by Siglecs has been extensively studied, but relationships between structure and functions are poorly explored. Here we present new data relating the structure and function of Siglec-E, the major CD33-related Siglec expressed on mouse neutrophils, monocytes, macrophages, and dendritic cells. We generated nine new rat monoclonal antibodies specific to mouse Siglec-E, with no cross-reactivity to Siglec-F...
December 5, 2016: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/27920196/regulation-of-turkey-myogenic-satellite-cell-migration-by-micrornas-mir-128-and-mir-24
#12
S G Velleman, R L Harding
Myogenic satellite cells are an adult stem cell responsible for all post-hatch muscle growth in poultry. As a stem cell population, satellite cells are highly heterogeneous, but the origin of this heterogeneity remains unclear. Heterogeneity is, in part, regulated by gene expression. One method of endogenous gene regulation that may contribute to heterogeneity is microRNAs (miRNAs). Two miRNAs previously shown to regulate poultry myogenic satellite cell proliferation and differentiation, miR-128 and miR-24, were studied to determine if they also affected satellite cell migration...
December 5, 2016: Poultry Science
https://www.readbyqxmd.com/read/27919171/cpg-methylation-participates-in-regulation-of-hepatitis-b-virus-gene-expression-in-host-sperm-and-sperm-derived-embryos
#13
ChengYao Zhong, Hui Lu, TingTing Han, XiaoFang Tan, PengHao Li, JiHua Huang, QingDong Xie, ZhiWei Hou, Ting Qu, Yang Jiang, Sheng Wang, Lan Xu, Ying Zhong, TianHua Huang
AIM: This study was undertaken to investigate relationship between hepatitis B virus (HBV) CpG methylation and HBV gene transcription in sperm and sperm-derived embryos. METHODS: HBV-infected patient sperm and HBV plasmid-transfected donor sperm were subjected to interspecific in vitro fertilization, methylation-specific PCR, bisulfite sequencing PCR, reverse transcription PCR and real-time quantitative PCR. RESULTS: Positive methylation bands for CpG islands II and III in the HBV genome were observed in patient sperm but not in controls, and methylation percentages of CpG sites varied among different patient sperm samples...
December 6, 2016: Epigenomics
https://www.readbyqxmd.com/read/27918898/roles-of-l-type-calcium-channels-cav1-2-and-the-distal-c-terminus-dct-in-differentiation-and-mineralization-of-rat-dental-apical-papilla-stem-cells-rscaps
#14
Qianqian Gao, Jianping Ge, Yanqin Ju, Changsheng Li, Jian Gao, Meisheng Wu, Shouliang Zhao
OBJECTIVE: Voltage-gated inward Ca(2+) currents (ICa) are triggered by cell depolarization and commonly produce transient increases in the cytoplasmic free Ca(2+) concentration. The CaV1.2 distal C-terminus is susceptible to proteolytic cleavage, which yields a truncated CaV1.2 subunit and a cleaved C-terminal fragment (CCt or DCT). Stem cells from the apical papilla (SCAPs) has a capacity for differentiation into the odontoblastic-like cells in vitro and dentin forming in vivo, which makes SCAPs advantages in tissue engineering and regenerative endodontic...
November 4, 2016: Archives of Oral Biology
https://www.readbyqxmd.com/read/27918674/mir-224-affects-mammary-epithelial-cell-apoptosis-and-triglyceride-production-by-downregulating-acadm-and-aldh2-genes
#15
Binglei Shen, Qiqi Pan, Yuwei Yang, Yan Gao, Xin Liu, Wei Li, Yunsheng Han, Xue Yuan, Yongli Qu, Zhihui Zhao
MicroRNAs (miRNAs) are small noncoding RNA molecules that involve in various biological functions by regulating the expressions of target genes. In recent years, many researchers have demonstrated that miR-224 played an important role in regulating lipid metabolism. Therefore, in this study, the target genes of miR-224 were verified and the regulatory role of miR-224 was confirmed in lipid metabolism. In this study, bioinformatics methods were used for primarily predicting the target gene of miR-224 and dual-luciferase reporter system was used for further verify the relationship between miR-224 and its target gene...
December 5, 2016: DNA and Cell Biology
https://www.readbyqxmd.com/read/27918592/microrna-497-induces-apoptosis-and-suppresses-proliferation-via-the-bcl-2-bax-caspase9-caspase3-pathway-and-cyclin-d2-protein-in-huvecs
#16
Ridong Wu, Shi Tang, Mian Wang, Xiangdong Xu, Chen Yao, Shenming Wang
INTRODUCTION: MicroRNAs play crucial roles in various types of diseases. However, to date, no information about the role of miR-497 in the development of atherosclerosis has been reported. This study investigated the possible role of miR-497 in vascular endothelial cell injury during the early stage of atherosclerosis. MATERIALS AND METHODS: The expression level of miR-497 in human umbilical vein endothelial cells (HUVECs) exposed to ox-LDL was detected using qRT-PCR...
2016: PloS One
https://www.readbyqxmd.com/read/27918590/effects-of-circular-dna-length-on-transfection-efficiency-by-electroporation-into-hela-cells
#17
Benjamin D Hornstein, Dany Roman, Lirio M Arévalo-Soliz, Melinda A Engevik, Lynn Zechiedrich
The ability to produce extremely small and circular supercoiled vectors has opened new territory for improving non-viral gene therapy vectors. In this work, we compared transfection of supercoiled DNA vectors ranging from 383 to 4,548 bp, each encoding shRNA against GFP under control of the H1 promoter. We assessed knockdown of GFP by electroporation into HeLa cells. All of our vectors entered cells in comparable numbers when electroporated with equal moles of DNA. Despite similar cell entry, we found length-dependent differences in how efficiently the vectors knocked down GFP...
2016: PloS One
https://www.readbyqxmd.com/read/27918546/mri-measurements-of-reporter-mediated-increases-in-transmembrane-water-exchange-enable-detection-of-a-gene-reporter
#18
Franz Schilling, Susana Ros, De-En Hu, Paula D'Santos, Sarah McGuire, Richard Mair, Alan J Wright, Elizabeth Mannion, Robin J M Franklin, André A Neves, Kevin M Brindle
Non-invasive imaging of gene expression can be used to track implanted cells in vivo but often requires the addition of an exogenous contrast agent that may have limited tissue access. We show that the urea transporter (UT-B) can be used as a gene reporter, where reporter expression is detected using (1)H MRI measurements of UT-B-mediated increases in plasma membrane water exchange. HEK cells transfected with the reporter showed an increased apparent water exchange rate (AXR), which increased in line with UT-B expression...
December 5, 2016: Nature Biotechnology
https://www.readbyqxmd.com/read/27918105/resveratrol-inhibits-proliferation-invasion-and-epithelial-mesenchymal-transition-by-increasing-mir-200c-expression-in-hct-116-colorectal-cancer-cells
#19
Fatemeh Karimi Dermani, Massoud Saidijam, Razieh Amini, Ali Mahdavinezhad, Korosh Heydari, Rezvan Najafi
OBJECTIVE: Colorectal cancer (CRC) is one of the most common malignancies, associated with high rates of relapse. A notable challenge in treatment is low response rate to current therapies for advanced CRC. The miR-200c plays an essential role in tumor suppression by inhibiting epithelial-mesenchymal transition (EMT). Resveratrol, a natural compound found in red wine, reveals anti-cancer properties in several types of cancers such as CRC. The aim of current study was to evaluate the effects of resveratrol on proliferation, apoptosis and invasion of HCT-116 cells and also expression of EMT-related genes in presences or absence of miR-200c...
December 5, 2016: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/27917880/actin-activates-pseudomonas-aeruginosa-exoy-nucleotidyl-cyclase-toxin-and-exoy-like-effector-domains-from-martx-toxins
#20
Alexander Belyy, Dorothée Raoux-Barbot, Cosmin Saveanu, Abdelkader Namane, Vasily Ogryzko, Lina Worpenberg, Violaine David, Veronique Henriot, Souad Fellous, Christien Merrifield, Elodie Assayag, Daniel Ladant, Louis Renault, Undine Mechold
The nucleotidyl cyclase toxin ExoY is one of the virulence factors injected by the Pseudomonas aeruginosa type III secretion system into host cells. Inside cells, it is activated by an unknown eukaryotic cofactor to synthesize various cyclic nucleotide monophosphates. ExoY-like adenylate cyclases are also found in Multifunctional-Autoprocessing Repeats-in-ToXin (MARTX) toxins produced by various Gram-negative pathogens. Here we demonstrate that filamentous actin (F-actin) is the hitherto unknown cofactor of ExoY...
December 5, 2016: Nature Communications
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