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https://www.readbyqxmd.com/read/28241425/heat-shock-factor-1-depletion-sensitizes-a172-glioblastoma-cells-to-temozolomide-via-suppression-of-cancer-stem-cell-like-properties
#1
Chang-Nim Im, Hye Hyeon Yun, Jeong-Hwa Lee
Heat shock factor 1 (HSF1), a transcription factor activated by various stressors, regulates proliferation and apoptosis by inducing expression of target genes, such as heat shock proteins and Bcl-2 (B-cell lymphoma 2) interacting cell death suppressor (BIS). HSF1 also directly interacts with BIS, although it is still unclear whether this interaction is critical in the regulation of glioblastoma stem cells (GSCs). In this study, we examined whether small interfering RNA-mediated BIS knockdown decreased protein levels of HSF1 and subsequent nuclear localization under GSC-like sphere (SP)-forming conditions...
February 22, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28241067/cyclin-y-mediated-transcript-profiling-reveals-several-important-functional-pathways-regulated-by-cyclin-y-in-hippocampal-neurons
#2
I-Seul Joe, Jong-Hwan Kim, Hanna Kim, Jung-Hwa Hong, Mirang Kim, Mikyoung Park
Cyclin Y (CCNY), which is a cyclin protein known to play a role in cell division, is unexpectedly and thus interestingly expressed in non-proliferating neuronal cells. There have been only a few studies reporting the neuronal functions of CCNY in synapse remodeling and hippocampal long-term potentiation. Therefore, we here provide global and comprehensive information on the putative functions of CCNY in biological and functional pathways in neuronal systems. We adopted high-throughput RNA-sequencing technology for analyzing transcriptomes regulated by CCNY and utilized bioinformatics for identifying putative molecules, biological processes, and functional pathways that are possibly connected to CCNY functions in hippocampal neuronal cells of rats...
2017: PloS One
https://www.readbyqxmd.com/read/28240251/development-of-a-pipeline-for-automated-high-throughput-analysis-of-paraspeckle-proteins-reveals-specific-roles-for-importin-%C3%AE-proteins
#3
Andrew T Major, Yoichi Miyamoto, Camden Y Lo, David A Jans, Kate L Loveland
We developed a large-scale, unbiased analysis method to measure how functional variations in importin (IMP) α2, IMPα4 and IMPα6 each influence PSPC1 and SFPQ nuclear accumulation and their localization to paraspeckles. This addresses the hypothesis that individual IMP protein activities determine cargo nuclear access to influence cell fate outcomes. We previously demonstrated that modulating IMPα2 levels alters paraspeckle protein 1 (PSPC1) nuclear accumulation and affects its localization into a subnuclear domain that affects RNA metabolism and cell survival, the paraspeckle...
February 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28239824/long-non-coding-rna-cche1-overexpression-predicts-a-poor-prognosis-for-cervical-cancer
#4
Y Chen, C-X Wang, X-X Sun, C Wang, T-F Liu, D-J Wang
OBJECTIVE: Our study is intended to explore the correlation of long non-coding RNA CCHE1 (CCHE1) and clinicopathological factors of cervical cancer patients, and evaluate the impact of CCHE1 on the prognosis of cervical cancer. PATIENTS AND METHODS: The CCHE1 expression in cervical cancer tissues was examined by quantitative Real-time PCR (qRT-PCR) and its correlation with clinicopathological features was also analyzed. A Kaplan-Meier survival curve was generated following a log-rank test...
February 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28239821/analysis-of-circulating-long-non-coding-rna-uca1-as-potential-biomarkers-for-diagnosis-and-prognosis-of-osteosarcoma
#5
J-J Wen, Y-D Ma, G-S Yang, G-M Wang
OBJECTIVE: The aim of this investigation was to examine the potential usefulness of long non-coding RNA UCA1 (UCA1) as a biomarker for diagnosis and prognosis in osteosarcoma. PATIENTS AND METHODS: The expression level of UCA1 was determined using TaqMan real-time PCR in human osteosarcoma tissues and patients' sera. Next, we investigated to clarify the relationship of UCA1 with clinicopathological features. The receiver operating characteristic (ROC) curve was performed to estimate the diagnostic value of UCA1...
February 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28239816/long-non-coding-rna-carlo-5-upregulation-associates-with-poor-prognosis-in-patients-suffering-gastric-cancer
#6
J-N Liu, Y-M Shangguan
OBJECTIVE: Accumulating evidence has demonstrated that microRNAs (miRNAs) play critical roles in cancer initiation and development. The present study aims to explore the clinical significance of long noncoding RNA CARLo-5 (CARLo-5) in gastric cancer. PATIENTS AND METHODS: CARLo-5 expression in normal gastric tissue, gastric cancer were quantified by Quantitative reverse transcription PCR. The relationship between CARLo-5 expression and the clinical features of gastric cancer was assessed...
February 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28236292/the-role-of-genomics-in-common-variable-immunodeficiency-disorders
#7
REVIEW
Anne-Kathrin Kienzler, Chantal E Hargreaves, Smita Y Patel
The advent of next generation sequencing (NGS) and 'omic' technologies has revolutionised the field of genetics and its implementation in healthcare has the potential to realise precision medicine. Primary immunodeficiencies (PID) are a group of rare diseases which have benefitted from NGS, with a massive increase in causative genes identified in the past few years. Common Variable Immunodeficiency Disorders (CVID) are a heterogeneous form of PID and the most common form of antibody failure in children and adults...
February 25, 2017: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/28236275/gene-expression-profiles-predictive-of-cold-induced-sweetening-in-potato
#8
Jonathan Neilson, M Lagüe, S Thomson, F Aurousseau, A M Murphy, B Bizimungu, V Deveaux, Y Bègue, J M E Jacobs, H H Tai
Cold storage (2-4 °C) used in potato production to suppress diseases and sprouting during storage can result in cold-induced sweetening (CIS), where reducing sugars accumulate in tuber tissue leading to undesirable browning, production of bitter flavors, and increased levels of acrylamide with frying. Potato exhibits genetic and environmental variation in resistance to CIS. The current study profiles gene expression in post-harvest tubers before cold storage using transcriptome sequencing and identifies genes whose expression is predictive for CIS...
February 24, 2017: Functional & Integrative Genomics
https://www.readbyqxmd.com/read/28235841/non-coding-y-rnas-associate-with-early-replicating-euchromatin-concordantly-with-the-origin-recognition-complex-orc
#9
Eyemen G A Kheir, Torsten Krude
Non-coding Y RNAs are essential for the initiation of chromosomal DNA replication in vertebrates, yet their association with chromatin during the cell cycle is not characterised. Here, we quantify human Y RNA levels in soluble and chromatin-associated intracellular fractions and investigate topographically their dynamic association with chromatin during the cell cycle. We find that, on average, about a million Y RNA molecules are present in the soluble fraction of a proliferating cell, and 5-10-fold less in association with chromatin...
February 24, 2017: Journal of Cell Science
https://www.readbyqxmd.com/read/28235558/dna-vaccination-regimes-against-schmallenberg-virus-infection-in-ifnar-mice-suggest-two-targets-for-immunization
#10
Hani Y Boshra, Diego Charro, Gema Lorenzo, Isbene Sanchez, Beatriz Lazaro, Alejandro Brun, Nicola G A Abrescia
Schmallenberg virus (SBV) is an RNA virus of the Bunyaviridae family, genus Orthbunyavirus, that infects wild and livestock species of ruminants. While inactivated and attenuated vaccines have been shown to prevent SBV infection, little is known about their mode of immunity; specifically, which components of the virus are responsible for inducing immunological responses in the host. As previous DNA vaccination experiments on other bunyaviruses have found that glycoproteins, as well as modified (i.e. ubiquitinated) nucleoproteins (N) can confer immunity against virulent viral challenge, constructs encoding for fragments of SBV glycoproteins GN and GC, as well as ubiquitinated and non-ubiquitinated N were cloned in mammalian expression vectors, and vaccinated intramuscularly in IFNAR(-/-) mice...
February 21, 2017: Antiviral Research
https://www.readbyqxmd.com/read/28231269/a-mouse-model-of-paralytic-myelitis-caused-by-enterovirus-d68
#11
Alison M Hixon, Guixia Yu, J Smith Leser, Shigeo Yagi, Penny Clarke, Charles Y Chiu, Kenneth L Tyler
In 2014, the United States experienced an epidemic of acute flaccid myelitis (AFM) cases in children coincident with a nationwide outbreak of enterovirus D68 (EV-D68) respiratory disease. Up to half of the 2014 AFM patients had EV-D68 RNA detected by RT-PCR in their respiratory secretions, although EV-D68 was only detected in cerebrospinal fluid (CSF) from one 2014 AFM patient. Given previously described molecular and epidemiologic associations between EV-D68 and AFM, we sought to develop an animal model by screening seven EV-D68 strains for the ability to induce neurological disease in neonatal mice...
February 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28230184/tobacco-vein-banding-mosaic-virus-6k2-protein-hijacks-nbpsbo1-for-virus-replication
#12
Chao Geng, Zhi-Yong Yan, De-Jie Cheng, Jin Liu, Yan-Ping Tian, Chang-Xiang Zhu, Hong-Yan Wang, Xiang-Dong Li
Chloroplast-bound vesicles are key components in viral replication complexes (VRCs) of potyviruses. The potyviral VRCs are induced by the second 6 kDa protein (6K2) and contain at least viral RNA and nuclear inclusion protein b. To date, no chloroplast protein has been identified to interact with 6K2 and involve in potyvirus replication. In this paper, we showed that the Photosystem II oxygen evolution complex protein of Nicotiana benthamiana (NbPsbO1) was a chloroplast protein interacting with 6K2 of Tobacco vein banding mosaic virus (TVBMV; genus Potyvirus) and present in the VRCs...
February 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28223458/mutation-of-the-n-terminal-region-of-chikungunya-virus-capsid-protein-implications-for-vaccine-design
#13
Adam Taylor, Xiang Liu, Ali Zaid, Lucas Y H Goh, Jody Hobson-Peters, Roy A Hall, Andres Merits, Suresh Mahalingam
Mosquito-transmitted chikungunya virus (CHIKV) is an arthritogenic alphavirus of the Togaviridae family responsible for frequent outbreaks of arthritic disease in humans. Capsid protein, a structural protein encoded by the CHIKV RNA genome, is able to translocate to the host cell nucleolus. In encephalitic alphaviruses, nuclear translocation induces host cell transcriptional shutoff; however, the role of capsid protein nucleolar localization in arthritogenic alphaviruses remains unclear. Using recombinant enhanced green fluorescent protein (EGFP)-tagged expression constructs and CHIKV infectious clones, we describe a nucleolar localization sequence (NoLS) in the N-terminal region of capsid protein, previously uncharacterized in CHIKV...
February 21, 2017: MBio
https://www.readbyqxmd.com/read/28223335/cooperation-of-musashi-2-numb-mdm2-and-p53-in-drug-resistance-and-malignant-biology-of-pancreatic-cancer
#14
Weiwei Sheng, Ming Dong, Chuanping Chen, Zixin Wang, Yunwei Li, Kewei Wang, Yuji Li, Jianping Zhou
Our earlier work showed that Musashi (MSI)-2 promoted the development of pancreatic cancer (PC) by down-regulating Numb, which prevented murine double-minute (MDM)-2-mediated p53 ubiquitin degradation. Thus, we investigate the relationship among MSI2, Numb, MDM2, and p53 in PC in vitro and invivo, an association that has not been reported to our knowledge. MSI2 had no relationship with mutant p53 (mtp53) and wild-type p53 (wtp53) in normal PC cells. However, in response to gemcitabine or cisplatin treatment, MSI2 silencing simultaneously down-regulated MDM2 and up-regulated Numb and wtp53 protein levels...
February 21, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28221868/somatic-brca1-2-recovery-as-a-resistance-mechanism-after-exceptional-response-to-poly-adp-ribose-polymerase-inhibition
#15
Stephanie Lheureux, Jeff P Bruce, Julia V Burnier, Katherine Karakasis, Patricia A Shaw, Blaise A Clarke, S Y Cindy Yang, Rene Quevedo, Tiantian Li, Mark Dowar, Valerie Bowering, Trevor J Pugh, Amit M Oza
Purpose Durable and long-term responses to the poly (ADP-ribose) polymerase inhibitor olaparib are observed in patients without BRCA1/2 mutations. However, beyond BRCA1/2 mutations, there are no approved biomarkers for olaparib in high-grade serous ovarian cancer (HGSOC). To determine mechanisms of durable response and resistance to olaparib therapy, we performed an analysis of HGSOC tumors from three patients without germline BRCA1/2 mutations who experienced exceptional responses to olaparib. Patients and Methods We performed integrated exome, low-pass genome, and RNA sequence analysis of tumors at diagnosis and upon relapse from patients with platinum-sensitive HGSOC recurrence who were treated > 5 years with olaparib therapy as a single agent...
February 21, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28221363/premature-primary-tooth-eruption-in-cognitive-motor-delayed-adnp-mutated-children
#16
I Gozes, A Van Dijck, G Hacohen-Kleiman, I Grigg, G Karmon, E Giladi, M Eger, Y Gabet, M Pasmanik-Chor, E Cappuyns, O Elpeleg, R F Kooy, S Bedrosian-Sermone
A major flaw in autism spectrum disorder (ASD) management is late diagnosis. Activity-dependent neuroprotective protein (ADNP) is a most frequent de novo mutated ASD-related gene. Functionally, ADNP protects nerve cells against electrical blockade. In mice, complete Adnp deficiency results in dysregulation of over 400 genes and failure to form a brain. Adnp haploinsufficiency results in cognitive and social deficiencies coupled to sex- and age-dependent deficits in the key microtubule and ion channel pathways...
February 21, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28219154/-human-enterovirus-infection-status-and-clinical-characteristics-of-274-patients-with-viral-encephalitis-in-henan-province-2011-2012
#17
H X Ma, J J Pan, Y Li, K Kang, X Y Huang, A G You, B L Xu
Objective: To investigate human enterovirus (HEV) infection and clinical characteristics of viral encephalitis patients in Pingdingshan, Henan Province. Methods: Cerebrospinal fluid specimens and epidemiological information were collected from 274 viral encephalitis patients in the departments of pediatrics and neurology in hospitals in Pingdingshan, Henan Province, from April 2011 to August 2012. Patients with bacterial infections were excluded from the study. Demographic information was collected by questionnaires and clinical information was mainly obtained from hospital examinations...
February 6, 2017: Zhonghua Yu Fang Yi Xue za Zhi [Chinese Journal of Preventive Medicine]
https://www.readbyqxmd.com/read/28218905/phosphorylation-mediated-activation-of-ldha-promotes-cancer-cell-invasion-and-tumour-metastasis
#18
L Jin, J Chun, C Pan, G N Alesi, D Li, K R Magliocca, Y Kang, Z G Chen, D M Shin, F R Khuri, J Fan, S Kang
Metastases remain the major cause of death from cancer. Recent molecular advances have highlighted the importance of metabolic alterations in cancer cells, including the Warburg effect that describes an increased glycolysis in cancer cells. However, how this altered metabolism contributes to tumour metastasis remains elusive. Here, we report that phosphorylation-induced activation of lactate dehydrogenase A (LDHA), an enzyme that catalyses the interconversion of pyruvate and lactate, promotes cancer cell invasion, anoikis resistance and tumour metastasis...
February 20, 2017: Oncogene
https://www.readbyqxmd.com/read/28217125/the-structure-and-function-of-the-gram-positive-bacterial-rna-degradosome
#19
REVIEW
Kyu Hong Cho
The RNA degradosome is a highly structured protein complex responsible for bulk RNA decay in bacteria. The main components of the complex, ribonucleases, an RNA helicase, and glycolytic enzymes are well-conserved in bacteria. Some components of the degradosome are essential for growth and the disruption of degradosome formation causes slower growth, indicating that this complex is required for proper cellular function. The study of the Escherichia coli degradosome has been performed extensively for the last several decades and has revealed detailed information on its structure and function...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28216965/mutational-analysis-of-hepatitis-e-virus-orf1-y-domain-effects-on-rna-replication-and-virion-infectivity
#20
Mohammad Khalid Parvez
AIM: To investigate the role of non-structural open reading frame 1 "Y-domain" sequences in the hepatitis E virus (HEV) life cycle. METHODS: Sequences of human HEV Y-domain (amino acid sequences 216-442) and closely-related viruses were analyzed in silico. Site-directed mutagenesis of the Y-domain (HEV SAR55) was carried out and studied in the replicon-baculovirus-hepatoma cell model. In vitro transcribed mRNA (pSK-GFP) constructs were transfected into S10-3 cells and viral RNA replicating GFP-positive cells were scored by flow cytometry...
January 28, 2017: World Journal of Gastroenterology: WJG
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