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https://www.readbyqxmd.com/read/29228450/mir-21-enhanced-glioma-cells-resistance-to-carmustine-via-decreasing-spry2-expression
#1
G-B Wang, J-H Liu, J Hu, K Xue
OBJECTIVE: Gliomas are accompanied with high mortality owning to their invasive peculiarity and vulnerability to drug resistance. miR-21 is a vital oncogenic miRNA that regulates drug resistance of tumor cells. This study aims to elucidate the function of miR-21 in human glioma cells resistant to carmustine (BCNU) and to demonstrate the underlying molecular mechanism. MATERIALS AND METHODS: BCNU-sensitive cells (SWOZ2 cells) were transfected with miR-21 agomir and negative control, and BCNU-resistance cells (SWOZ2-BCNU cells) were transfected with miR-21 antagomir and negative control...
November 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29228449/igfbp2-induces-spry1-expression-via-nf-%C3%AE%C2%BAb-signaling-pathway-in-glioblastoma-multiforme-gbm
#2
Z-S Yuan, Y Cao, Z-Y Li
OBJECTIVE: Gliomas are accompanied with high mortality owning to their invasive peculiarity and vulnerability to drug resistance. miR-21 is a vital oncogenic miRNA that regulates drug resistance of tumor cells. This study aims to elucidate the function of miR-21 in human glioma cells resistant to carmustine (BCNU) and to demonstrate the underlying molecular mechanism. MATERIALS AND METHODS: BCNU-sensitive cells (SWOZ2 cells) were transfected with miR-21 agomir and negative control, and BCNU-resistance cells (SWOZ2-BCNU cells) were transfected with miR-21 antagomir and negative control...
November 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29228426/lncrna-hotair-contributes-to-the-tumorigenesis-of-nasopharyngeal-carcinoma-via-up-regulating-fasn
#3
D-D Ma, L-L Yuan, L-Q Lin
OBJECTIVE: The therapeutic options for nasopharyngeal carcinoma (NPC) treatment have been restricted mainly to radiotherapy or chemotherapy, and the clinical treatment effect remains unsatisfactory. The primary purpose of this study was to investigate the molecular mechanisms of NPC and to find effective novel therapeutic targets for NPC. PATIENTS AND METHODS: In order to analyze the expression level of lncRNA HOTAIR and FASN in human NPC clinical tissues or NPC cells, total RNA was extracted with TRIzol and the relative mRNA expression levels were detected by quantitative Real-time PCR...
November 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29228422/microrna-582-5p-suppressed-gastric-cancer-cell-proliferation-via-targeting-akt3
#4
Y Jin, L-P Tao, S-C Yao, Q-K Huang, Z-F Chen, Y-J Sun, S-Q Jin
OBJECTIVE: To dissect the functioning mode of miR-582-5p on gastric cancer cell growth and provide therapeutic targets for gastric cancer. PATIENTS AND METHODS: Relative expression levels of miR-582-5p in human gastric cancer tissue samples and gastric cancer-derived cell lines were measured by using quantitative Real-time PCR. Cell proliferation and viability capacities were assessed by cell counting kit-8 (CCK8) assay and colony formation assay. Cell apoptosis and cell cycle distribution were identified by flow cytometry...
November 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29228420/knockdown-of-long-noncoding-rna-linc-itgb1-suppresses-migration-invasion-of-hepatocellular-carcinoma-via-regulating-zeb1
#5
W-W Yu, K Wang, G-J Liao
OBJECTIVE: This research focuses on the influence of linc-ITGB1 on the metastasis of hepatocellular carcinoma and further explores its underlying mechanism. PATIENTS AND METHODS: A total of 70 hepatocellular carcinoma patients were chosen for our study. RT-qPCR was used for detecting the expression level of linc-ITGB1 in their cancer tissues. Moreover, the expression level of linc-ITGB1 was also detected in hepatocellular carcinoma cell lines. Furthermore, whether linc-ITGB1 could affect the migrated and invaded ability of hepatocellular carcinoma cells was determined by wound healing assay and transwell assay...
November 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29228419/expression-and-clinical-significance-of-long-non-coding-rna-ghet1-in-pancreatic-cancer
#6
H-Y Zhou, H Zhu, X-Y Wu, X-D Chen, Z-G Qiao, X Ling, X-M Yao, J-H Tang
OBJECTIVE: To investigate the expression level and biological function of long non-coding RNA gastric carcinoma high expressed transcript 1 (lncRNA-GHET1) in pancreatic ductal adenocarcinoma (pancreatic cancer for short), to analyze the correlation between the expression of GHET1 and clinicopathological features and to explore the role and clinical significance of GHET1 in the development and progression of pancreatic cancer. PATIENTS AND METHODS: The relative expression of GHET1 in 5 human pancreatic cancer cell lines was detected by quantitative Real-time polymerase chain reaction (qRT-PCR)...
November 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29228368/the-oncolytic-virus-mg1-targets-and-eliminates-latently-hiv-1-infected-cells-implications-for-an-hiv-cure
#7
Nischal Ranganath, Teslin S Sandstrom, Stephanie C Burke Schinkel, Sandra C Côté, Jonathan B Angel
Latently HIV-infected cells evade immune- and drug-mediated clearance. These cells harbour intracellular signalling defects including impairment of the antiviral, type I IFN (IFN-I) response. Such defects have also been observed in several cancers, and have been exploited for the development of therapeutic oncolytic viruses, including the recombinant Maraba virus (MG1). We therefore hypothesized that MG1 would infect and eliminate latently HIV-1-infected cells, while sparing healthy uninfected cells. Preferential infection and elimination by MG1 was first demonstrated in latently HIV-1-infected cell lines...
December 8, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29228320/overexpression-of-zrf1-is-related-to-tumor-malignant-potential-and-a-poor-outcome-of-gastric-carcinoma
#8
Taisuke Imamura, Shuhei Komatsu, Daisuke Ichikawa, Mahito Miyamae, Wataru Okajima, Takuma Ohashi, Jun Kiuchi, Keiji Nishibeppu, Toshiyuki Kosuga, Hirotaka Konishi, Atsushi Shiozaki, Hitoshi Fujiwara, Kazuma Okamoto, Hitoshi Tsuda, Eigo Otsuji
Zuotin-related factor 1 (ZRF1) is a recently characterized epigenetic factor involved in transcriptional regulation and is highly overexpressed in several malignancies, but it is not known whether it plays a role in gastric cancer (GC). In this study, we investigated whether ZRF1 acts as a cancer-promoting gene through its activation/overexpression in GC. We analyzed five GC cell lines and 133 primary tumors, which had been curatively resected in our hospital between 2001 and 2003. Overexpression of ZRF1 was detected in GC cell lines (four out of five lines, 80...
December 6, 2017: Carcinogenesis
https://www.readbyqxmd.com/read/29228301/targeted-inhibition-of-janus-kinases-abates-interfon-gamma-induced-invasive-behaviour-of-fibroblast-like-synoviocytes
#9
Thomas Karonitsch, Denise Beckmann, Karolina Dalwigk, Birgit Niederreiter, Paul Studenic, Ruth A Byrne, Johannes Holinka, Florian Sevelda, Adelheid Korb-Pap, Günter Steiner, Josef S Smolen, Thomas Pap, Hans P Kiener
Objectives: The aim was to explore the function of the T-cell cytokine IFNγ for mesenchymal tissue remodelling in RA and to determine whether IFNγ signalling controls the invasive potential of fibroblast-like synoviocytes (FLS). Methods: To assess architectural responses, FLS were cultured in three-dimensional micromasses. FLS motility was analysed in migration and invasion assays. Signalling events relevant to cellular motility were defined by western blots. Baricitinib and small interfering RNA pools were used to suppress Janus kinase (JAK) functions...
December 7, 2017: Rheumatology
https://www.readbyqxmd.com/read/29228278/zinc-finger-protein-274-regulates-imprinted-expression-of-transcripts-in-prader-willi-syndrome-neurons
#10
Maéva Langouët, Heather R Glatt-Deeley, Michael S Chung, Clémence M Dupont-Thibert, Elodie Mathieux, Erin C Banda, Christopher E Stoddard, Leann Crandall, Marc Lalande
Prader-Willi syndrome (PWS) is characterized by neonatal hypotonia, developmental delay and hyperphagia/obesity and is caused by the absence of paternal contribution to chromosome 15q11-q13. Using induced pluripotent stem cell (iPSC) models of PWS, we previously discovered an epigenetic complex that is comprised of the zinc-finger protein ZNF274 and the SET domain bifurcated 1 (SETDB1) histone H3 lysine 9 (H3K9) methyltransferase and that silences the maternal alleles at the PWS locus. Here, we have knocked out ZNF274 and rescued the expression of silent maternal alleles in neurons derived from PWS iPSC lines, without affecting DNA methylation at the PWS-Imprinting Center (PWS-IC)...
December 7, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/29228147/association-of-early-postresuscitation-hypotension-with-survival-to-discharge-after-targeted-temperature-management-for-pediatric-out-of-hospital-cardiac-arrest-secondary-analysis-of-a-randomized-clinical-trial
#11
Alexis A Topjian, Russell Telford, Richard Holubkov, Vinay M Nadkarni, Robert A Berg, J Michael Dean, Frank W Moler
Importance: Out-of-hospital cardiac arrest (OHCA) occurs in more than 6000 children each year in the United States, with survival rates of less than 10% and severe neurologic morbidity in many survivors. Post-cardiac arrest hypotension can occur, but its frequency and association with survival have not been well described during targeted temperature management. Objective: To determine whether hypotension is associated with survival to discharge in children and adolescents after resuscitation from OHCA...
December 11, 2017: JAMA Pediatrics
https://www.readbyqxmd.com/read/29228136/cd177-neutrophils-suppress-epithelial-cell-tumourigenesis-in-colitis-associated-cancer-and-predict-good-prognosis-in-colorectal-cancer
#12
Guangxi Zhou, Kangsheng Peng, Yang Song, Wenjing Yang, Weigang Shu, Tianming Yu, Lin Yu, Moubin Lin, Qing Wei, Chunqiu Chen, Lu Yin, Yingzi Cong, Zhanju Liu
Neutrophils are found to be infiltrated in tumour tissues of patients with colitis-associated cancer (CAC) and colorectal cancer (CRC), and CD177 is mainly expressed in neutrophils. In our study, expression of CD177 in tumour tissues from patients with CAC or CRC was analysed by qRT-PCR, flow cytometry, and immunohistochemistry. We recruited 378 patients with CRC, determined CD177 expression in tumours, and examined its correlation with clinicopathological features. Moreover, CAC model was induced in wild type (WT) and CD177-/- mice by azoxymethane (AOM)/dextran sodium sulfate (DSS)...
December 8, 2017: Carcinogenesis
https://www.readbyqxmd.com/read/29228061/structure-activity-studies-of-mdm2-mdm4-binding-stapled-peptides-comprising-non-natural-amino-acids
#13
Sharon Min Qi Chee, Jantana Wongsantichon, Jiawei Siau, Dawn Thean, Fernando Ferrer, Robert C Robinson, David P Lane, Christopher J Brown, Farid J Ghadessy
As primary p53 antagonists, Mdm2 and the closely related Mdm4 are relevant cancer therapeutic targets. We have previously described a series of cell-permeable stapled peptides that bind to Mdm2 with high affinity, resulting in activation of the p53 tumour suppressor. Within this series, highest affinity was obtained by modification of an obligate tryptophan residue to the non-natural L-6-chlorotryptophan. To understand the structural basis for improved affinity we have solved the crystal structure of this stapled peptide (M011) bound to Mdm2 (residues 6-125) at 1...
2017: PloS One
https://www.readbyqxmd.com/read/29227978/osterix-decreases-the-chemosensitivity-of-breast-cancer-cells-by-upregulating-galnt14
#14
Jiahui Wu, Xiang Chen, Qianyi Bao, Rui Duan, Yucui Jin, Yifang Shui, Bing Yao, Xiangdong Lu, Yue Wang, Hongyan Cui, Lingyun Li, Hongyan Yuan, Changyan Ma
BACKGROUND/AIMS: Osterix (Osx), a key regulator of osteoblast differentiation and bone formation, has been recently reported to be associated with the progression of breast cancer. However, the precise roles of Osx in breast cancer remain unclear. METHODS: Drug sensitivity of the cancer cells was assessed using an 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2-H-tetrazolium bromide (MTT) assay. Target genes were obtained by high-throughput Illumina sequencing and were confirmed in vitro and in vivo...
November 27, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29227855/a-case-report-of-successful-management-of-clostridium-difficile-colitis-with-antegrade-fidaxomicin-through-a-mucous-fistula-obviating-the-need-for-subtotal-colectomy
#15
Suzanne Arnott, Matthew Skancke, Sheena Chen, Bruce Abell
INTRODUCTION: Clostridium difficile is the most common cause of healthcare-associated infections and can have devastating morbidity and mortality. Traditional treatment algorithms involve intravenous metronidazole and enteric metronidazole or vancomycin. Fidaxomicin (DificidR) targets "switch regions" within RNA polymerases and effectively kills clostridium difficile bacteria and is typically administered orally primarily or through a naso/oro-gastric conduit. PRESENTATION OF CASE: 55-year-old with a recent elective surgical procedure was hospitalized with multifocal pneumonia and subsequently developed clostridium difficile colitis...
November 27, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/29227829/a-long-noncoding-rna-from-the-hbs1l-myb-intergenic-region-on-chr6q23-regulates-human-fetal-hemoglobin-expression
#16
Tasha A Morrison, Ibifiri Wilcox, Hong-Yuan Luo, John J Farrell, Ryo Kurita, Yukio Nakamura, George J Murphy, Shuaiying Cui, Martin H Steinberg, David H K Chui
The HBS1L-MYB intergenic region (chr6q23) regulates erythroid cell proliferation, maturation, and fetal hemoglobin (HbF) expression. An enhancer element within this locus, highlighted by a 3-bp deletion polymorphism (rs66650371), is known to interact with the promoter of the neighboring gene, MYB, to increase its expression, thereby regulating HbF production. RNA polymerase II binding and a 50-bp transcript from this enhancer region reported in ENCODE datasets suggested the presence of a long noncoding RNA (lncRNA)...
November 29, 2017: Blood Cells, Molecules & Diseases
https://www.readbyqxmd.com/read/29227823/lncrna-malat1-regulates-sepsis-induced-cardiac-inflammation-and-dysfunction-via-interaction-with-mir-125b-and-p38-mapk-nf%C3%AE%C2%BAb
#17
Hu Chen, Xiaoyun Wang, Xuetao Yan, Xiaoli Cheng, Xianghu He, Wenzhong Zheng
This study aimed to explore the role of MALAT1 in sepsis-induced cardiac inflammation and dysfunction. We constructed the rat sepsis models through cecal ligation and puncture (CLP). The cardiac function, including left ventricular peak pressure (LVPP), left ventricular end diastolic pressure (LVEDP) and maximum rate of rise/fall of left ventricle pressure (±dp/dtmax) as well as the contents of serum cardiac troponin I (CTn-I), creatine kinase (CK), and creative kinase isoenzyme MB (CK-MB) were detected after modeling...
December 7, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/29227683/discovery-of-peptidomimetic-antibody-drug-conjugate-linkers-with-enhanced-protease-specificity
#18
Binqing Wei, Janet Gunzner-Toste, Hui Yao, Tao Wang, Jing Wang, Zijin Xu, Jinhua Chen, John Wai, Jim Nonomiya, Siao Ping Tsai, Josefa Dela Cruz-Chuh, Katherine Ruth Kozak, Yichin Liu, Shang-Fan Yu, Jeff Lau, Guangmin Li, Gail D Lewis Phillips, Doug Leipold, Amrita Kamath, Dian Su, Keyang Xu, Charles Eigenbrot, Stefan Steinbacher, Rachana Ohri, Helga Raab, Leanna R Staben, Guiling Zhao, John A Flygare, Thomas H Pillow, Vishal Verma, Brian Salvatore Safina
Antibody-Drug Conjugates (ADCs) have become an important therapeutic modality for oncology, with three approved by the FDA and over 60 others in clinical trials. Despite the progress, improvements in ADC therapeutic index are desired. Peptide-based ADC linkers that are cleaved by lysosomal proteases have shown sufficient stability in serum, and effective payload-release in targeted cells. If the linker can be preferentially hydrolyzed by tumor-specific proteases, safety margin may improve. However, the use of peptide-based linkers limits our ability to modulate protease specificity...
December 11, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29227673/crystal-structure-of-cleaved-serp-1-a-myxomavirus-derived-immune-modulating-serpin-structural-design-of-serpin-reactive-center-loop-rcl-peptides-with-improved-therapeutic-function
#19
Brian P Mahon, Sriram Ambadapadi, Jordan R Yaron, Carrie L Lomelino, Melissa A Pinard, Shahar Keinan, Igor Kurnikov, Colin Macaulay, Liqiang Zhang, Westley Reeves, Grant McFadden, Scott Tibbetts, Robert McKenna, Alexandra Lucas
The Myxomavirus-derived protein Serp-1 has potent anti-inflammatory activity in models of vasculitis, lupus, viral sepsis, and transplant. Serp-1 has also been tested successfully in a Phase IIa clinical trial in unstable angina, representing a 'first-in-class' therapeutic. Recently, peptides derived from the reactive center loop (RCL) have been developed as stand-alone therapeutics for reducing vasculitis and improving survival in MHV68-infected mice. However, both Serp-1 and the RCL peptides lose activity in MHV68-infected mice after antibiotic suppression of intestinal microbiota...
December 11, 2017: Biochemistry
https://www.readbyqxmd.com/read/29227551/high-purity-isolation-and-sensitive-quantification-of-extracellular-vesicles-using-affinity-to-tim4
#20
Takeshi Yoshida, Takamasa Ishidome, Rikinari Hanayama
Almost all types of cells secrete extracellular vesicles (EVs), including exosomes and microvesicles. EVs carry various proteins, lipids, mRNAs, and microRNAs, and may participate in many aspects of physiological and pathophysiological processes. Various studies are currently being conducted to develop therapeutic and diagnostic methods targeting or utilizing EVs. Therefore, developing ideal methods for isolating and quantifying EVs is an active area of research. EVs express phosphatidylserine on their outer lipid bilayer...
December 11, 2017: Current Protocols in Cell Biology
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