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https://www.readbyqxmd.com/read/27914347/differential-crosstalk-between-global-dna-methylation-and-metabolomics-associated-with-cell-type-specific-stress-response-by-pristine-and-functionalized-mwcnt
#1
Nivedita Chatterjee, Jisu Yang, Dahye Yoon, Suhkmann Kim, Sang-Woo Joo, Jinhee Choi
The present study endeavored to evaluate the comprehensive mechanisms of MWCNT-induced toxicity with particular emphasis on understanding cell specificity in relation to surface functionalization of MWCNT. Following treatment with differentially functionalized (hydroxylation/carboxylation) MWCNT on human bronchial epithelial (BEAS-2B) and human hepatoma (HepG2) cell lines, intracellular uptake, various toxicological end points, global metabolomics profiling and DNA methylation were evaluated. Herein, the comparative in vitro studies ascertained that surface functionalization diminished the toxic potentiality of MWCNT in respect of their pristine counterpart...
November 9, 2016: Biomaterials
https://www.readbyqxmd.com/read/27914309/unique-approach-to-sensorimotor-training-with-a-new-device-combining-air-cushion-with-stochastic-translations-a-prospective-randomized-controlled-clinical-trial
#2
Christian Mittermaier, Maximilian Schindler, Benjamin Loader, Thomas Waldhoer, Clemens Ambrozy, Richard Crevenna, Karin Pieber
Sensorimotor training with a wide variety of available devices represents an important component in rehabilitation and prevention of different sports injuries and chronic diseases. The purpose of this study was to evaluate the effects of a sensorimotor training with a newly developed device, which consists of an instable platform moving on an air cushion, providing dynamic balance training by tilting and unanticipated stochastic translations on postural control. Seventy-two healthy young subjects were included in this prospective, randomized, controlled, and observer-blinded study...
November 25, 2016: Gait & Posture
https://www.readbyqxmd.com/read/27914267/intein-mediated-site-specific-synthesis-of-tumor-targeting-protein-delivery-system-turning-peg-dilemma-into-prodrug-like-feature
#3
Yingzhi Chen, Meng Zhang, Hongyue Jin, Yisi Tang, Huiyuan Wang, Qin Xu, Yaping Li, Feng Li, Yongzhuo Huang
Poor tumor-targeted and cytoplasmic delivery is a bottleneck for protein toxin-based cancer therapy. Ideally, a protein toxin drug should remain stealthy in circulation for prolonged half-life and reduced side toxicity, but turn activated at tumor. PEGylation is a solution to achieve the first goal, but creates a hurdle for the second because PEG rejects interaction between the drugs and tumor cells therein. Such PEG dilemma is an unsolved problem in protein delivery. Herein proposed is a concept of turning PEG dilemma into prodrug-like feature...
November 27, 2016: Biomaterials
https://www.readbyqxmd.com/read/27914258/centralised-decentralised-or-hybrid-sanitation-systems-economic-evaluation-under-urban-development-uncertainty-and-phased-expansion
#4
Ivar Roefs, Brendo Meulman, Jan H G Vreeburg, Marc Spiller
Sanitation systems are built to be robust, that is, they are dimensioned to cope with population growth and other variability that occurs throughout their lifetime. It was recently shown that building sanitation systems in phases is more cost effective than one robust design. This phasing can take place by building small autonomous decentralised units that operate closer to the actual demand. Research has shown that variability and uncertainty in urban development does affect the cost effectiveness of this approach...
November 23, 2016: Water Research
https://www.readbyqxmd.com/read/27914197/young-adult-born-neurons-enhance-hippocampal-dependent-performance-via-influences-on-bilateral-networks
#5
Jia-Min Zhuo, Hua-An Tseng, Mitul Desai, Mark E Bucklin, Ali I Mohammed, Nick Tm Robinson, Edward S Boyden, Lara M Rangel, Alan P Jasanoff, Howard J Gritton, Xue Han
Adult neurogenesis supports performance in many hippocampal dependent tasks. Considering the small number of adult-born neurons generated at any given time, it is surprising that this sparse population of cells can substantially influence behavior. Recent studies have demonstrated that heightened excitability and plasticity may be critical for the contribution of young adult-born cells for certain tasks. What is not well understood is how these unique biophysical and synaptic properties may translate to networks that support behavioral function...
December 3, 2016: ELife
https://www.readbyqxmd.com/read/27914083/antibody-guided-molecular-imaging-of-infective-endocarditis
#6
Kenneth L Pinkston, Peng Gao, Kavindra V Singh, Ali Azhdarinia, Barbara E Murray, Eva M Sevick-Muraca, Barrett R Harvey
In this protocol, we describe the application of using a high affinity monoclonal antibody generated against the major pilin protein component of the pilin structure of Enterococcus faecalis as a PET imaging agent for enterococcal endocarditis detection. The anti-pilin -mAb 64Cu conjugate was able to specifically label enterococcal endocarditis vegetation in vivo in a rodent endocarditis model. By targeting pili, a covalently linked surface antigen extending from the bacterial surface, we provided evidence that gram-positive pilin represent a logical surface antigen to define or target an infectious agent for molecularly guided imaging...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27914023/reliability-and-validity-of-the-persian-translation-of-berg-balance-scale-in-parkinson-disease
#7
Arash Babaei-Ghazani, Hosein Mohammadi, Gholam Ali Shahidi, Seyed Amir Hasan Habibi, Bijan Forogh, Tannaz Ahadi, Bina Eftekharsadat
PURPOSE: Parkinson disease (PD) is one of the common causes of imbalance, and the balance assessment is necessary for treatment and rehabilitation of these patients. The Berg Balance Scale (BBS) has been the main instrument used to evaluate balance impairment. The purpose of this study is to investigate reliability and validity of the Persian translation of BBS in Parkinson disease. METHODS: One hundred PD patients (with mean age of 56.8 ± 15.13 years) were included...
December 2, 2016: Aging Clinical and Experimental Research
https://www.readbyqxmd.com/read/27913949/epigenetic-cpg-methylation-of-the-promoter-and-reactivation-of-the-expression-of-gstp1-by-astaxanthin-in-human-prostate-lncap-cells
#8
Yuqing Yang, Francisco Fuentes, Limin Shu, Chao Wang, Doug Pung, Wenji Li, Chengyue Zhang, Yue Guo, Ah-Ng Kong
Astaxanthin (AST), a red dietary carotenoid, has synergistic antioxidant effects with polyunsaturated fatty acids at low concentrations via Nuclear factor (erythroid-derived 2)-like 2 (NFE2L2 or Nrf2)/antioxidant response element (ARE) signaling. In addition, chromatin remodeling and DNA methylation-based gene silencing represent a common mechanism in prostate carcinogenesis and tumor progression from normal cells to pre-initiated cells and ultimately to invasive carcinoma. Therefore, the control of epigenetic modification and the transcriptional/translational control of the activation of Nrf2 and Nrf2-target genes, including glutathione S-transferases (GSTs), appear to be an important mechanism that protects cells against injuries from oxidative stress and cancer development...
December 2, 2016: AAPS Journal
https://www.readbyqxmd.com/read/27913822/more-than-just-scanning-the-importance-of-cap-independent-mrna-translation-initiation-for-cellular-stress-response-and-cancer
#9
REVIEW
Rafaela Lacerda, Juliane Menezes, Luísa Romão
The scanning model for eukaryotic mRNA translation initiation states that the small ribosomal subunit, along with initiation factors, binds at the cap structure at the 5' end of the mRNA and scans the 5' untranslated region (5'UTR) until an initiation codon is found. However, under conditions that impair canonical cap-dependent translation, the synthesis of some proteins is kept by alternative mechanisms that are required for cell survival and stress recovery. Alternative modes of translation initiation include cap- and/or scanning-independent mechanisms of ribosomal recruitment...
December 2, 2016: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/27913727/regulated-complex-assembly-safeguards-the-fidelity-of-sleeping-beauty-transposition
#10
Yongming Wang, Diana Pryputniewicz-Dobrinska, Enikö Éva Nagy, Christopher D Kaufman, Manvendra Singh, Steve Yant, Jichang Wang, Anna Dalda, Mark A Kay, Zoltán Ivics, Zsuzsanna Izsvák
The functional relevance of the inverted repeat structure (IR/DR) in a subgroup of the Tc1/mariner superfamily of transposons has been enigmatic. In contrast to mariner transposition, where a topological filter suppresses single-ended reactions, the IR/DR orchestrates a regulatory mechanism to enforce synapsis of the transposon ends before cleavage by the transposase occurs. This ordered assembly process shepherds primary transposase binding to the inner 12DRs (where cleavage does not occur), followed by capture of the 12DR of the other transposon end...
December 1, 2016: Nucleic Acids Research
https://www.readbyqxmd.com/read/27913706/stat1-promotes-kras-colon-tumor-growth-and-susceptibility-to-pharmacological-inhibition-of-translation-initiation-factor-eif4a
#11
Shuo Wang, Cedric Darini, Laurent Désaubry, Antonis E Koromilas
The transcription factor STAT1 displays antitumor functions for certain forms of cancer via immunoregulatory and cell-autonomous pathways. Paradoxically, STAT1 can promote the survival of different tumor types treated with chemotherapeutic drugs through mechanisms that are not clearly defined. Herein, we demonstrate that STAT1 displays prosurvival effects in human KRAS colon tumor cells by regulating pathways that converge on the initiation of mRNA translation. Specifically, STAT1 increases PI3K class IB signaling and promotes the downregulation of the programmed cell death protein 4 (PDCD4), a protein with tumor-suppressive properties...
December 2016: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/27913688/left-ventricle-transcriptomic-analysis-reveals-connective-tissue-accumulation-associates-with-initial-age-dependent-decline-in-v%C3%AC-o2peak-from-its-lifetime-apex
#12
Gregory N Ruegsegger, Ryan G Toedebusch, Joshua F Braselton, Thomas E Childs, Frank W Booth
Peak oxygen consumption (V̇O2peak) strongly predicts morbidity and mortality better than other established risk factors, yet mechanisms associated with its age-associated decline are unknown. Our lab has shown that V̇O2peak first begins to decrease at the same age of 19-20 weeks old in both sedentary and wheel-running, female Wistar rats (Toedebusch et al., Physiol Genomics. 48:101-15, 2016). Here, we employed a total systemic approach using unsupervised interrogation of mRNA with RNA-sequencing. The purpose of our study was to analyze transcriptomic profiles from both sedentary (SED) and wheel-running (RUN) conditions as a strategy to identify pathways in the left ventricle that may contribute to the initial reductions in V̇O2peak occurring between 19 and 27 weeks of age...
December 2, 2016: Physiological Genomics
https://www.readbyqxmd.com/read/27913687/do-we-know-whether-potential-g-quadruplexes-actually-form-in-long-functional-rna-molecules
#13
REVIEW
Carika Weldon, Ian C Eperon, Cyril Dominguez
The roles of deoxyribonucleic acid (DNA) G-quadruplex structures in gene expression and telomere maintenance have been well characterized. Recent results suggest that such structures could also play pivotal roles in ribonucleic acid (RNA) biology, such as splicing or translation regulation. However, it has been difficult to show that RNA G-quadruplexes (G4s) exist in specific long RNA sequences, such as precursor messenger RNA, in a functional or cellular context. Most current methods for identifying G4s involve the use of short, purified RNA sequences in vitro, in the absence of competition with secondary structures or protein binding...
December 15, 2016: Biochemical Society Transactions
https://www.readbyqxmd.com/read/27913682/translational-regulation-of-mitochondrial-biogenesis
#14
REVIEW
Yi Zhang, Hong Xu
Mitochondria are generated by the expression of genes on both nuclear and mitochondrial genome. Mitochondrial biogenesis is highly plastic in response to cellular energy demand, developmental signals and environmental stimuli. Mechanistic target of rapamycin (mTOR) pathway regulates mitochondrial biogenesis to co-ordinate energy homeostasis with cell growth. The local translation of mitochondrial proteins on the outer membrane facilitates their efficient import and thereby allows prodigious mitochondrial biogenesis during rapid cell growth and proliferation...
December 15, 2016: Biochemical Society Transactions
https://www.readbyqxmd.com/read/27913676/translational-control-by-mtor-independent-routes-how-eif6-organizes-metabolism
#15
REVIEW
Annarita Miluzio, Sara Ricciardi, Nicola Manfrini, Roberta Alfieri, Stefania Oliveto, Daniela Brina, Stefano Biffo
Over the past few years, there has been a growing interest in the interconnection between translation and metabolism. Important oncogenic pathways, like those elicited by c-Myc transcription factor and mTOR kinase, couple the activation of the translational machinery with glycolysis and fatty acid synthesis. Eukaryotic initiation factor 6 (eIF6) is a factor necessary for 60S ribosome maturation. eIF6 acts also as a cytoplasmic translation initiation factor, downstream of growth factor stimulation. eIF6 is up-regulated in several tumor types...
December 15, 2016: Biochemical Society Transactions
https://www.readbyqxmd.com/read/27913667/molecular-basis-for-specificity-of-the-met1-linked-polyubiquitin-signal
#16
REVIEW
Paul R Elliott
The post-translational modification of proteins provides a rapid and versatile system for regulating all signalling pathways. Protein ubiquitination is one such type of post-translational modification involved in controlling numerous cellular processes. The unique ability of ubiquitin to form polyubiquitin chains creates a highly complex code responsible for different subsequent signalling outcomes. Specialised enzymes ('writers') generate the ubiquitin code, whereas other enzymes ('erasers') disassemble it...
December 15, 2016: Biochemical Society Transactions
https://www.readbyqxmd.com/read/27913641/translation-repression-by-maternal-rna-binding-protein-zar1-is-essential-for-early-oogenesis-in-zebrafish
#17
Liyun Miao, Yue Yuan, Feng Cheng, Junshun Fang, Fang Zhou, Weirui Ma, Yan Jiang, Xiahe Huang, Yingchun Wang, Lingjuan Shan, Dahua Chen, Jian Zhang
Large numbers of maternal RNAs are deposited in oocytes and are reserved for later development. Control of maternal RNA translation during oocyte maturation has been extensively investigated and its regulatory mechanisms are well documented. However, translational regulation of maternal RNAs in early oogenesis is largely unexplored. In this study, we generated zebrafish zar1 mutants which result in early oocyte apoptosis and fully penetrant male development. Loss of p53 suppresses the apoptosis in zar1 mutants and restores oocyte development...
December 2, 2016: Development
https://www.readbyqxmd.com/read/27913624/bcp1-is-the-nuclear-chaperone-of-the-60s-ribosomal-protein-rpl23-in-saccharomyces-cerevisiae
#18
Ya-Han Ting, Ting-Jun Lu, Arlen W Johnson, Jing-Ting Shie, Bo-Ru Chen, Suresh Kumar S, Kai-Yin Lo
Eukaryotic ribosomes are composed of rRNAs and ribosomal proteins. Ribosomal proteins are translated in the cytoplasm and imported into the nucleus for assembly with the rRNAs. It has been shown that chaperones or karyopherins responsible for import can maintain the stability of ribosomal proteins by neutralizing unfavorable positive charges and thus facilitate their transports. Among 79 ribosomal proteins in yeast, only few are identified with specific chaperones. Besides the classic role in maintaining protein stability, chaperones have additional roles in transport, chaperoning the assembly site, and dissociation of ribosomal proteins from karyopherins...
December 2, 2016: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/27913584/nitro-fatty-acid-pharmacokinetics-in-the-adipose-tissue-compartment
#19
Marco Fazzari, Nicholas K H Khoo, Steven R Woodcock, Diane K Jorkasky, Lihua Li, Francisco J Schopfer, Bruce A Freeman
Electrophilic nitro-fatty acids (NO2-FAs) promote adaptive and anti-inflammatory cell signaling responses as a result of an electrophilic character that supports post-translational protein modifications. A unique pharmacokinetic profile is expected for NO2-FAs because of an ability to undergo reversible reactions including Michael additions with biological cysteine-containing proteins and esterification into complex lipids. Herein we report via quantitative whole-body autoradiography analysis of rats gavaged with radiolabeled 10-nitro-[14C]oleic acid, preferential accumulation in adipose tissue over two weeks...
December 2, 2016: Journal of Lipid Research
https://www.readbyqxmd.com/read/27913557/translation-and-validation-of-the-cancer-related-fatigue-scale-in-greek-in-a-sample-of-patients-with-advanced-prostate-cancer
#20
Andreas Charalambous, Charis Kaite, Marianna Constantinou, Christiana Kouta
OBJECTIVE: To translate and validate the Cancer-Related Fatigue (CRF) Scale in the Greek language. DESIGN: A cross-sectional descriptive design was used in order to translate and validate the CRF Scale in Greek. Factor analyses were performed to understand the psychometric properties of the scale and to establish construct, criterion and convergent validity. SETTING: Outpatients' oncology clinics of two public hospitals in Cyprus. PARTICIPANTS: 148 patients with advanced prostate cancer undergoing chemotherapy...
December 2, 2016: BMJ Open
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