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https://www.readbyqxmd.com/read/28530640/genetic-regulation-of-the-runx-transcription-factor-family-has-antitumor-effects
#1
Ken Morita, Kensho Suzuki, Shintaro Maeda, Akihiko Matsuo, Yoshihide Mitsuda, Chieko Tokushige, Gengo Kashiwazaki, Junichi Taniguchi, Rina Maeda, Mina Noura, Masahiro Hirata, Tatsuki Kataoka, Ayaka Yano, Yoshimi Yamada, Hiroki Kiyose, Mayu Tokumasu, Hidemasa Matsuo, Sunao Tanaka, Yasushi Okuno, Manabu Muto, Kazuhito Naka, Kosei Ito, Toshio Kitamura, Yasufumi Kaneda, Paul P Liu, Toshikazu Bando, Souichi Adachi, Hiroshi Sugiyama, Yasuhiko Kamikubo
Runt-related transcription factor 1 (RUNX1) is generally considered to function as a tumor suppressor in the development of leukemia, but a growing body of evidence suggests that it has pro-oncogenic properties in acute myeloid leukemia (AML). Here we have demonstrated that the antileukemic effect mediated by RUNX1 depletion is highly dependent on a functional p53-mediated cell death pathway. Increased expression of other RUNX family members, including RUNX2 and RUNX3, compensated for the antitumor effect elicited by RUNX1 silencing, and simultaneous attenuation of all RUNX family members as a cluster led to a much stronger antitumor effect relative to suppression of individual RUNX members...
May 22, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28529576/increased-mir31hg-lncrna-expression-increases-gefitinib-resistance-in-non-small-cell-lung-cancer-cell-lines-through-the-egfr-pi3k-akt-signaling-pathway
#2
Bing Wang, Hong Jiang, Limin Wang, Xueqin Chen, Kan Wu, Shirong Zhang, Shenglin Ma, Bing Xia
The aim of the present study was to gain insight into the molecular mechanism of gefitinib resistance in non-small cell lung cancer (NSCLC), and demonstrate whether long noncoding RNA (lncRNA) expression signatures differ between gefitinib-sensitive PC9 and gefitinib-resistant PC9 (PC9-R) cell lines. PC9 and PC9-R cells were treated with gefitinib and, after 48 h, proliferation and apoptosis were analyzed using a Cell Counting Kit-8 (CCK-8) assay and flow cytometry. Microarray expression profiling of lncRNAs was undertaken in both PC9 and PC9-R cells, and the expression profiles were verified by reverse transcription quantitative-polymerase chain reaction...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28528818/patellar-tendon-vibration-reduces-the-increased-facilitation-from-quadriceps-to-soleus-in-post-stroke-hemiparetic-individuals
#3
Eric Maupas, Joseph-Omer Dyer, Sibele de Andrade Melo, Robert Forget
BACKGROUND: Stimulation of the femoral nerve in healthy people can facilitate soleus H-reflex and electromyography (EMG) activity. In stroke patients, such facilitation of transmission in spinal pathways linking the quadriceps and soleus muscles is enhanced and related to co-activation of knee and ankle extensors while sitting and walking. Soleus H-reflex facilitation can be depressed by vibration of the quadriceps in healthy people, but the effects of such vibration have never been studied on the abnormal soleus facilitation observed in people after stroke...
May 18, 2017: Annals of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/28515296/hepatitis-c-virus-lipoviroparticles-hcv-lvp-assemble-in-the-endoplasmic-reticulum-er-and-bud-off-from-the-er-to-golgi-in-copii-vesicles
#4
Gulam H Syed, Mohsin Khan, Song Yang, Aleem Siddiqui
Hepatitis C virus (HCV) exists as a lipoprotein-virus hybrid lipoviroparticle (LVP). In vitro studies have demonstrated the importance of apolipoproteins in HCV secretion and infectivity leading to the notion that HCV co-opts the secretion of very-low density lipoprotein (VLDL) for its egress. However, our understanding of the mechanisms involved in virus particle assembly and egress, are still elusive. Biogenesis of VLDL particle occurs in the ER followed by subsequent lipidation in the ER and Golgi. Secretion of mature VLDL particles occurs through the Golgi secretory pathway...
May 17, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28513971/predictors-and-the-distal-outcome-of-general-internet-use-the-identification-of-children-s-developmental-trajectories
#5
Jeong Jin Yu, Su Jung Park
This study examined the predictors and distal outcome in relation to the frequency of online activities and investigated the presence of prototypical trajectories following different patterns of general Internet use over 5 years. The data set consisted of a nationally representative sample of 2,840 fourth graders (Mage  = 9.86 years) in South Korea at baseline. Analyses revealed rank-order stability in general Internet use with four latent classes: high stable (5.8%), high quadratic (20.3%), moderate stable (32...
May 17, 2017: British Journal of Developmental Psychology
https://www.readbyqxmd.com/read/28513433/distributing-tasks-via-multiple-input-pathways-increase-cellular-survival-in-stress
#6
Alejandro A Granados, Matthew M Crane, Luis F Montano-Gutierrez, Reiko J Tanaka, Margaritis Voliotis, Peter Swain
Improving in one aspect of a task can undermine performance in another, but how such opposing demands play out in single cells and impact on fitness is mostly unknown. Here we study budding yeast in dynamic environments of hyperosmotic stress and show how the corresponding signalling network increases cellular survival both by assigning the requirements of high response speed and high response accuracy to two separate input pathways and by having these pathways interact to converge on Hog1, a p38 MAP kinase...
May 17, 2017: ELife
https://www.readbyqxmd.com/read/28512316/phenotypic-plasticity-trade-offs-and-gene-expression-changes-accompanying-dietary-restriction-and-switches-in-bactrocera-dorsalis-hendel-diptera-tephritidae
#7
Er-Hu Chen, Qiu-Li Hou, Dan-Dan Wei, Hong-Bo Jiang, Jin-Jun Wang
In this study, we investigated the effects of dietary restriction (DR) and variable diets on phenotypes and gene expression in oriental fruit fly, Bactrocera dorsalis (Hendel), one of the most economically important pests in the family Tephritidae around the world. As expected, we found that DR altered the B. dorsalis phenotypes by significantly increasing stress resistance and lifespan, but reduced egg production when compared with the control diet. The results suggested a trade-off between reproduction versus somatic maintenance (stress resistance) and lifespan in B...
May 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28512092/quantitative-kinetic-analyses-of-shutting-off-a-two-component-system
#8
Rong Gao, Ann M Stock
Cells rely on accurate control of signaling systems to adapt to environmental perturbations. System deactivation upon stimulus removal is as important as activation of signaling pathways. The two-component system (TCS) is one of the major bacterial signaling schemes. In many TCSs, phosphatase activity of the histidine kinase (HK) is believed to play an essential role in shutting off the pathway and resetting the system to the prestimulus state. Two basic challenges are to understand the dynamic behavior of system deactivation and to quantitatively evaluate the role of phosphatase activity under natural cellular conditions...
May 16, 2017: MBio
https://www.readbyqxmd.com/read/28509539/tunable-luminescent-lanthanide-supramolecular-assembly-based-on-photoreaction-of-anthracene
#9
Yan Zhou, Heng-Yi Zhang, Zhi-Yuan Zhang, Yu Liu
Lanthanide luminescence materials generally show great superiority in light-emitting materials, gaining increasingly exploration in the design of advanced functional materials. Herein, we prepared a supramolecular assembly via the coordination of a host molecule (1) and dilanthanide metal. Compound 1 possesses a 9,10-diphenylanthracene (ant) core with photo-sensitivity and terminal terpyridine (tpy), containing two-arm dibenzo-24-crown-8. The assembly could exhibit excellent lanthanide luminescence after un-dergoing a photoreaction from anthracene unit in 1...
May 16, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28508330/mediators-of-weight-loss-maintenance-in-the-keep-it-off-trial
#10
A L Crain, N E Sherwood, B C Martinson, R W Jeffery
BACKGROUND: An important step toward enhancing the efficacy of weight loss maintenance interventions is identifying the pathways through which successful interventions such as the Keep It Off trial have worked. PURPOSE: This study aimed to assess the viability of mediated relationships between the Keep It Off Guided intervention, conceptually and empirically grounded potential mediators, and weight. Repeated measurement of mediators and weight enabled documentation of the temporal ordering of intervention delivery and changes in mediators and in weight among participants randomized to the Guided intervention or Self-Directed comparison group...
May 15, 2017: Annals of Behavioral Medicine: a Publication of the Society of Behavioral Medicine
https://www.readbyqxmd.com/read/28504269/yap-regulates-cell-mechanics-by-controlling-focal-adhesion-assembly
#11
Giorgia Nardone, Jorge Oliver-De La Cruz, Jan Vrbsky, Cecilia Martini, Jan Pribyl, Petr Skládal, Martin Pešl, Guido Caluori, Stefania Pagliari, Fabiana Martino, Zuzana Maceckova, Marian Hajduch, Andres Sanz-Garcia, Nicola Maria Pugno, Gorazd Bernard Stokin, Giancarlo Forte
Hippo effectors YAP/TAZ act as on-off mechanosensing switches by sensing modifications in extracellular matrix (ECM) composition and mechanics. The regulation of their activity has been described by a hierarchical model in which elements of Hippo pathway are under the control of focal adhesions (FAs). Here we unveil the molecular mechanism by which cell spreading and RhoA GTPase activity control FA formation through YAP to stabilize the anchorage of the actin cytoskeleton to the cell membrane. This mechanism requires YAP co-transcriptional function and involves the activation of genes encoding for integrins and FA docking proteins...
May 15, 2017: Nature Communications
https://www.readbyqxmd.com/read/28503911/community-football-teams-for-people-with-intellectual-disabilities-in-secure-settings-they-take-you-off-the-ward-it-was-like-a-nice-day-and-then-you-get-like-medals-at-the-end
#12
Nicholas Andrew Hudson, Jennifer Hella Mrozik, Rose White, Kristian Northend, Steve Moore, Katherine Lister, Kelly Rayner
BACKGROUND: People with learning disabilities (LD) are particularly vulnerable to mental health and behavioural difficulties, and it has been shown that regular exercise can improve psychosocial well-being as well as physical fitness. This research aims to explore the experiences of men with LD detained in secure settings who have engaged in community football training programmes and identify the benefits of such provision. METHOD: Interviews were conducted with eight patients in a forensic LD service, discussing their experiences of participating in community football...
May 15, 2017: Journal of Applied Research in Intellectual Disabilities: JARID
https://www.readbyqxmd.com/read/28503130/uncoupling-the-trade-off-between-somatic-proteostasis-and-reproduction-in-caenorhabditis-elegans-models-of-polyglutamine-diseases
#13
Netta Shemesh, Nadav Shai, Lana Meshnik, Rotem Katalan, Anat Ben-Zvi
Caenorhabditis elegans somatic protein homeostasis (proteostasis) is actively remodeled at the onset of reproduction. This proteostatic collapse is regulated cell-nonautonomously by signals from the reproductive system that transmit the commitment to reproduction to somatic cells. Here, we asked whether the link between the reproductive system and somatic proteostasis could be uncoupled by activating downstream effectors in the gonadal longevity cascade. Specifically, we examined whether over-expression of lipl-4 (lipl-4(oe)), a target gene of the gonadal longevity pathway, or increase in arachidonic acid (AA) levels, associated with lipl-4(oe), modulated proteostasis and reproduction...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/28490572/heterogeneous-resistance-to-quizartinib-in-acute-myeloid-leukemia-aml-revealed-by-single-cell-analysis
#14
Catherine C Smith, Amy Paguirigan, Grace R Jeschke, Kimberly C Lin, Evan Massi, Theodore Tarver, Chen-Shan Chin, Saurabh Asthana, Adam Olshen, Kevin J Travers, Susana Wang, Mark J Levis, Alexander E Perl, Jerald P Radich, Neil P Shah
Genomic studies have revealed significant branching heterogeneity in cancer. Studies of resistance to tyrosine kinase inhibitor (TKI) therapy have not fully reflected this heterogeneity as resistance in individual patients has been ascribed to largely mutually exclusive "on-target" or "off-target" mechanisms in which tumors either retain dependency on the target oncogene or subvert it through a parallel pathway. Using targeted sequencing from single cells and colonies from patient samples, we demonstrate tremendous clonal diversity in the majority of acute myeloid leukemia (AML) patients with activating FLT3 internal tandem duplication (ITD) mutations at the time of acquired resistance to the FLT3 inhibitor quizartinib...
May 10, 2017: Blood
https://www.readbyqxmd.com/read/28489020/correspondence-between-visual-and-electrical-input-filters-of-on-and-off-mouse-retinal-ganglion-cells
#15
Sudarshan Sekhar, Archana Jalligampala, Eberhart Zrenner, Daniel L Rathbun
OBJECTIVE: Over the past two decades retinal prostheses have made major strides in restoring functional vision to patients blinded by diseases such as retinitis pigmentosa. Presently, implants use single pulses to activate the retina. Though this stimulation paradigm has proved beneficial to patients, an unresolved problem is the inability to selectively stimulate the ON and OFF visual pathways. To this end our goal was to test, using white noise, voltage-controlled, cathodic, monophasic pulse stimulation, whether different retinal ganglion cell (RGC) types in the wild type retina have different electrical input filters...
May 10, 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/28474989/discovery-of-small-molecule-inhibitors-of-the-wnt-%C3%AE-catenin-signaling-pathway-by-targeting-%C3%AE-catenin-tcf4-interactions
#16
Maocai Yan, Guanqun Li, Jing An
The Wnt/β-catenin signaling pathway typically shows aberrant activation in various cancer cells, especially colorectal cancer cells. This signaling pathway regulates the expression of a variety of tumor-related proteins, including c-myc and cyclin D1, and plays essential roles in tumorigenesis and in the development of many cancers. Small molecules that block the interactions between β-catenin and Tcf4, a downstream stage of activation of the Wnt/β-catenin signaling pathway, could efficiently cut off this signal transduction and thereby act as a novel class of anticancer drugs...
January 1, 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28468993/trpv3-modulates-nociceptive-signaling-through-peripheral-and-supraspinal-sites-in-rats
#17
Steve McGaraughty, Katharine L Chu, Jun Xu, Laura Leys, Rich J Radek, Michael J Dart, Arthur Gomtsyan, Robert G Schmidt, Philip R Kym, Jill-Desiree Brederson
TRPV3 is a non-selective cation channel activated by temperatures above 33oC, and is reported localized in keratinocytes and nervous tissue. In order to investigate a role for TRPV3 in pain modulation, we conducted a series of in vivo electrophysiological studies on spinal and brain nociceptive neurons. Structurally diverse TRPV3 receptor antagonists reduced responses of spinal WDR neurons to low-intensity mechanical stimulation in neuropathic rats, but only CNS penetrant antagonists decreased elevated spontaneous firing...
May 3, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28468825/small-molecule-mediated-inhibition-of-%C3%AE-2-microglobulin-amyloid-fibril-formation
#18
Tyler M Marcinko, Jia Dong, Raquel LeBlanc, Kate V Daborowski, Richard W Vachet
In dialysis patients, β-2 microglobulin (β2m) can aggregate and eventually form amyloid fibrils in a condition known as dialysis-related amyloidosis, which deleteriously affects joint and bone function. Recently, several small molecules have been identified as potential inhibitors of β2m amyloid formation in vitro. Here, we investigate if these molecules are more broadly applicable inhibitors of β2m amyloid formation by studying their effect on Cu(II)-induced β2m amyloid formation. Using a variety of biophysical techniques, we also examine their inhibitory mechanisms...
May 3, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28466882/asia-pacific-consensus-statement-on-the-optimal-use-of-high-sensitivity-troponin-assays-in-acute-coronary-syndromes-diagnosis-focus-on-hs-tni
#19
COMMENT
Jack Wei Chieh Tan, Carolyn S P Lam, Sazzli Shahlan Kasim, Tar Choon Aw, Joel M Abanilla, Wei-Ting Chang, Van Phuoc Dang, Maria Iboleon-Dy, Sari Sri Mumpuni, Arintaya Phommintikul, Manh Cuong Ta, Punkiat Topipat, Kai Hang Yiu, Louise Cullen
OBJECTIVE: High-sensitivity troponin (hs-Tn) assays need to be applied appropriately to improve diagnosis and patient outcomes in acute coronary syndromes (ACS). METHODS: Experts from Asia Pacific convened in 2015 to provide data-driven consensus-based, region-specific recommendations and develop an algorithm for the appropriate incorporation of this assay into the ACS assessment and treatment pathway. RESULTS: Nine recommendations were developed by the expert panel: (1) troponin is the preferred cardiac biomarker for diagnostic assessment of ACS and is indicated for patients with symptoms of possible ACS; (2) hs-Tn assays are recommended; (3) serial testing is required for all patients; (4) testing should be performed at presentation and 3 hours later; (5) gender-specific cut-off values should be used for hs-Tn I assays; (6) hs-Tn I level >10 times the upper limit of normal should be considered to 'rule in' a diagnosis of ACS; (7) dynamic change >50% in hs-Tn I level from presentation to 3-hour retest identifies patients at high risk for ACS; (8) where only point-of-care testing is available, patients with elevated readings should be considered at high risk, while patients with low/undetectable readings should be retested after 6 hours or sent for laboratory testing and (9) regular education on the appropriate use of troponin tests is essential...
2017: Heart Asia
https://www.readbyqxmd.com/read/28464416/trade-offs-for-food-production-nature-conservation-and-climate-limit-the-terrestrial-carbon-dioxide-removal-potential
#20
Lena R Boysen, Wolfgang Lucht, Dieter Gerten
Large-scale biomass plantations (BPs) are a common factor in climate mitigation scenarios as they promise double benefits: extracting carbon from the atmosphere and providing a renewable energy source. However, their terrestrial carbon dioxide removal (tCDR) potentials depend on important factors such as land availability, efficiency of capturing biomass-derived carbon and the timing of operation. Land availability is restricted by the demands of future food production depending on yield increases and population growth, by requirements for nature conservation and, with respect to climate mitigation, avoiding unfavourable albedo changes...
May 2, 2017: Global Change Biology
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