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Tony Hunter

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https://www.readbyqxmd.com/read/28646879/discovery-of-a-single-male-aedes-aegypti-l-in-merseyside-england
#1
Thom Dallimore, Tony Hunter, Jolyon M Medlock, Alexander G C Vaux, Ralph E Harbach, Clare Strode
BACKGROUND: The mosquito Aedes aegypti (L.) is found in tropical and sub-tropical regions where it is the major vector of dengue fever, yellow fever, chikungunya and more recently Zika virus. Given its importance as a vector of arboviruses and its propensity to be transported to new regions, the European Centre for Disease Prevention and Control (ECDC) has placed Ae. aegypti on a list of potentially invasive mosquito species. It was previously reported in the United Kingdom (UK) in 1865 and 1919 but did not establish on either occasion...
June 24, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28630309/qnas-with-tony-hunter-and-james-allison
#2
Prashant Nair
No abstract text is available yet for this article.
June 27, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28604697/site-specific-incorporation-of-phosphotyrosine-using-an-expanded-genetic-code
#3
Christian Hoppmann, Allison Wong, Bing Yang, Shuwei Li, Tony Hunter, Kevan M Shokat, Lei Wang
Access to phosphoproteins with stoichiometric and site-specific phosphorylation status is key to understanding the role of protein phosphorylation. Here we report an efficient method to generate pure, active phosphotyrosine-containing proteins by genetically encoding a stable phosphotyrosine analog that is convertible to native phosphotyrosine. We demonstrate its general compatibility with proteins of various sizes, phosphotyrosine sites and functions, and reveal a possible role of tyrosine phosphorylation in negative regulation of ubiquitination...
June 12, 2017: Nature Chemical Biology
https://www.readbyqxmd.com/read/28485115/serum-igm-level-as-predictor-of-symptomatic-hyperviscosity-in-patients-with-waldenstr%C3%A3-m-macroglobulinaemia
#4
Joshua N Gustine, Kirsten Meid, Toni Dubeau, Zachary R Hunter, Lian Xu, Guang Yang, Irene M Ghobrial, Steven P Treon, Jorge J Castillo
Symptomatic hyperviscosity is a common clinical manifestation in patients with Waldenström macroglobulinaemia (WM) and high serum IgM levels. Prompt intervention is required to prevent catastrophic events, such as retinal or central nervous system bleeding. Identifying patients at high risk of symptomatic hyperviscosity might support the decision to treat asymptomatic patients before irreversible damage occurs. We carried out a large retrospective study in 825 newly diagnosed WM patients, of who 113 (14%) developed symptomatic hyperviscosity...
June 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28461335/mechanism-of-ubiquitin-chain-synthesis-employed-by-a-hect-domain-ubiquitin-ligase
#5
Michael E French, Julian L Klosowiak, Aaron Aslanian, Steven I Reed, John R Yates, Tony Hunter
Homologous to E6AP C-terminal (HECT) ubiquitin (Ub) ligases (E3s) are a large class of enzymes that bind to their substrates and catalyze ubiquitination through the formation of a Ub thioester intermediate. The mechanisms by which these E3s assemble polyubiquitin chains on their substrates remain poorly defined. We report here that the Nedd4 family HECT E3, WWP1, assembles substrate-linked Ub chains containing Lys-63, Lys-48, and Lys-11 linkages (Lys-63 > Lys-48 > Lys-11). Our results demonstrate that WWP1 catalyzes the formation of Ub chains through a sequential addition mechanism, in which Ub monomers are transferred in a successive fashion to the substrate, and that ubiquitination by WWP1 requires the presence of a low-affinity, noncovalent Ub-binding site within the HECT domain...
June 23, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28432725/synthesis-and-biological-potency-of-anilino-triazine-insecticides
#6
Timothy C Johnson, Annette V Brown, Kristy K Bryan, Katherine K Guenthenspberger, Ricky Hunter, Timothy P Martin, Noormohamed Niyaz, Gene F Tisdell, Tony Trullinger
BACKGROUND: An insecticide screening effort identified N-(4-bromophenyl)-4,6-bis(2,2,2-trifluoroethoxy)-1,3,5-triazine-2-amine as having weak potency against two lepidopteran species, Helicoverpa zea and Spodoptera exigua. A structure-activity relationship study about the trifluoroethoxy substituents and the aniline of this compound was carried out in an effort to improve insecticidal potency. RESULTS: Initially, a series of analogs bearing various substituents on the aniline were prepared, and the insecticidal potency was evaluated against H...
April 22, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28235842/acquired-mutations-associated-with-ibrutinib-resistance-in-waldenstr%C3%A3-m-macroglobulinemia
#7
Lian Xu, Nicholas Tsakmaklis, Guang Yang, Jiaji G Chen, Xia Liu, Maria Demos, Amanda Kofides, Christopher J Patterson, Kirsten Meid, Joshua Gustine, Toni Dubeau, M Lia Palomba, Ranjana Advani, Jorge J Castillo, Richard R Furman, Zachary R Hunter, Steven P Treon
Ibrutinib produces high response rates and durable remissions in Waldenström macroglobulinemia (WM) that are impacted by MYD88 and CXCR4(WHIM) mutations. Disease progression can develop on ibrutinib, although the molecular basis remains to be clarified. We sequenced sorted CD19(+) lymphoplasmacytic cells from 6 WM patients who progressed after achieving major responses on ibrutinib using Sanger, TA cloning and sequencing, and highly sensitive and allele-specific polymerase chain reaction (AS-PCR) assays that we developed for Bruton tyrosine kinase (BTK) mutations...
May 4, 2017: Blood
https://www.readbyqxmd.com/read/28129587/phisphorylation-the-emergence-of-histidine-phosphorylation-as-a-reversible-regulatory-modification
#8
REVIEW
Stephen Rush Fuhs, Tony Hunter
Histidine phosphorylation is crucial for prokaryotic signal transduction and as an intermediate for several metabolic enzymes, yet its role in mammalian cells remains largely uncharted. This is primarily caused by difficulties in studying histidine phosphorylation because of the relative instability of phosphohistidine (pHis) and lack of specific antibodies and methods to preserve and detect it. The recent synthesis of stable pHis analogs has enabled development of pHis-specific antibodies and their use has started to shed light onto this important, yet enigmatic posttranslational modification...
April 2017: Current Opinion in Cell Biology
https://www.readbyqxmd.com/read/28068078/enriching-nanoparticles-via-acoustofluidics
#9
Zhangming Mao, Peng Li, Mengxi Wu, Hunter Bachman, Nicolas Mesyngier, Xiasheng Guo, Sheng Liu, Francesco Costanzo, Tony Jun Huang
Focusing and enriching submicrometer and nanometer scale objects is of great importance for many applications in biology, chemistry, engineering, and medicine. Here, we present an acoustofluidic chip that can generate single vortex acoustic streaming inside a glass capillary through using low-power acoustic waves (only 5 V is required). The single vortex acoustic streaming that is generated, in conjunction with the acoustic radiation force, is able to enrich submicrometer- and nanometer-sized particles in a small volume...
January 24, 2017: ACS Nano
https://www.readbyqxmd.com/read/27909058/secreted-glioblastoma-nanovesicles-contain-intracellular-signaling-proteins-and-active-ras-incorporated-in-a-farnesylation-dependent-manner
#10
Natalie Luhtala, Aaron Aslanian, John R Yates, Tony Hunter
Glioblastomas (GBMs) are malignant brain tumors with a median survival of less than 18 months. Redundancy of signaling pathways represented within GBMs contributes to their therapeutic resistance. Exosomes are extracellular nanovesicles released from cells and present in human biofluids that represent a possible biomarker of tumor signaling state that could aid in personalized treatment. Herein, we demonstrate that mouse GBM cell-derived extracellular nanovesicles resembling exosomes from an H-RasV12 myr-Akt mouse model for GBM are enriched for intracellular signaling cascade proteins (GO: 0007242) and Ras protein signal transduction (GO: 0007265), and contain active Ras...
January 13, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/27899157/disorders-of-sex-development-insights-from-targeted-gene-sequencing-of-a-large-international-patient-cohort
#11
Stefanie Eggers, Simon Sadedin, Jocelyn A van den Bergen, Gorjana Robevska, Thomas Ohnesorg, Jacqueline Hewitt, Luke Lambeth, Aurore Bouty, Ingrid M Knarston, Tiong Yang Tan, Fergus Cameron, George Werther, John Hutson, Michele O'Connell, Sonia R Grover, Yves Heloury, Margaret Zacharin, Philip Bergman, Chris Kimber, Justin Brown, Nathalie Webb, Matthew F Hunter, Shubha Srinivasan, Angela Titmuss, Charles F Verge, David Mowat, Grahame Smith, Janine Smith, Lisa Ewans, Carolyn Shalhoub, Patricia Crock, Chris Cowell, Gary M Leong, Makato Ono, Antony R Lafferty, Tony Huynh, Uma Visser, Catherine S Choong, Fiona McKenzie, Nicholas Pachter, Elizabeth M Thompson, Jennifer Couper, Anne Baxendale, Jozef Gecz, Benjamin J Wheeler, Craig Jefferies, Karen MacKenzie, Paul Hofman, Philippa Carter, Richard I King, Csilla Krausz, Conny M A van Ravenswaaij-Arts, Leendert Looijenga, Sten Drop, Stefan Riedl, Martine Cools, Angelika Dawson, Achmad Zulfa Juniarto, Vaman Khadilkar, Anuradha Khadilkar, Vijayalakshmi Bhatia, Vũ Chí Dũng, Irum Atta, Jamal Raza, Nguyen Thi Diem Chi, Tran Kiem Hao, Vincent Harley, Peter Koopman, Garry Warne, Sultana Faradz, Alicia Oshlack, Katie L Ayers, Andrew H Sinclair
BACKGROUND: Disorders of sex development (DSD) are congenital conditions in which chromosomal, gonadal, or phenotypic sex is atypical. Clinical management of DSD is often difficult and currently only 13% of patients receive an accurate clinical genetic diagnosis. To address this we have developed a massively parallel sequencing targeted DSD gene panel which allows us to sequence all 64 known diagnostic DSD genes and candidate genes simultaneously. RESULTS: We analyzed DNA from the largest reported international cohort of patients with DSD (278 patients with 46,XY DSD and 48 with 46,XX DSD)...
November 29, 2016: Genome Biology
https://www.readbyqxmd.com/read/27798325/dynact-angiography-for-the-diagnosis-of-bilateral-bow-hunter-s-syndrome
#12
Tony Lu, Ponraj Chinnadurai, Javier E Anaya-Ayala, Orlando M Diaz
We herein present a rare case of bilateral positional vertebrobasilar insufficiency secondary to mechanical obstruction of the V2 segment of the vertebral artery in a 71-year-old patient presenting with vertigo, occipital headache, tremors and respiratory irregularities. Two-dimensional digital subtraction angiography is the traditional diagnostic imaging standard but does not capture any peri-vascular bony or soft tissue abnormalities that are important to understand the three-dimensional pathophysiology. Intra-procedural cone-beam computed tomography (CT) is an increasingly used diagnostic adjunct, available in most modern angiographic suites that allows for the three-dimensional visualization of the vasculature as well as CT-like soft tissue visualization of its surrounding anatomy...
February 2017: Interventional Neuroradiology
https://www.readbyqxmd.com/read/27754503/acoustofluidic-coating-of-particles-and-cells
#13
Bugra Ayan, Adem Ozcelik, Hunter Bachman, Shi-Yang Tang, Yuliang Xie, Mengxi Wu, Peng Li, Tony Jun Huang
On-chip microparticle and cell coating technologies enable a myriad of applications in chemistry, engineering, and medicine. Current microfluidic coating technologies often rely on magnetic labeling and concurrent deflection of particles across laminar streams of chemicals. Herein, we introduce an acoustofluidic approach for microparticle and cell coating by implementing tilted-angle standing surface acoustic waves (taSSAWs) into microchannels with multiple inlets. The primary acoustic radiation force generated by the taSSAW field was exploited in order to migrate the particles across the microchannel through multiple laminar streams, which contained the buffer and coating chemicals...
November 1, 2016: Lab on a Chip
https://www.readbyqxmd.com/read/27562445/idelalisib-in-waldenstr%C3%A3-m-macroglobulinemia-high-incidence-of-hepatotoxicity
#14
Jorge J Castillo, Joshua N Gustine, Kirsten Meid, Toni Dubeau, Guang Yang, Lian Xu, Zachary R Hunter, Steven P Treon
No abstract text is available yet for this article.
August 26, 2016: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/27554103/consent-and-widespread-access-to-personal-health-information-for-the-delivery-of-care-a-large-scale-telephone-survey-of-consumers-attitudes-using-vignettes-in-new-zealand
#15
Dick Whiddett, Inga Hunter, Barry McDonald, Tony Norris, John Waldon
OBJECTIVES: In light of recent health policy, to examine factors which influence the public's willingness to consent to share their health information in a national electronic health record (EHR). DESIGN: Data were collected in a national telephone survey in 2008. Respondents were presented with vignettes that described situations in which their health information was shared and asked if they would consent to such sharing. The subset, consisting of the 18 vignettes that covered proving care, was reanalysed in depth using new statistical methods in 2016...
2016: BMJ Open
https://www.readbyqxmd.com/read/27542194/histidine-phosphorylation-relieves-copper-inhibition-in-the-mammalian-potassium-channel-kca3-1
#16
Shekhar Srivastava, Saswati Panda, Zhai Li, Stephen R Fuhs, Tony Hunter, Dennis J Thiele, Stevan R Hubbard, Edward Y Skolnik
KCa2.1, KCa2.2, KCa2.3 and KCa3.1 constitute a family of mammalian small- to intermediate-conductance potassium channels that are activated by calcium-calmodulin. KCa3.1 is unique among these four channels in that activation requires, in addition to calcium, phosphorylation of a single histidine residue (His358) in the cytoplasmic region, by nucleoside diphosphate kinase-B (NDPK-B). The mechanism by which KCa3.1 is activated by histidine phosphorylation is unknown. Histidine phosphorylation is well characterized in prokaryotes but poorly understood in eukaryotes...
August 19, 2016: ELife
https://www.readbyqxmd.com/read/27468978/renal-disease-related-to-waldenstr%C3%A3-m-macroglobulinaemia-incidence-pathology-and-clinical-outcomes
#17
Josephine M Vos, Joshua Gustine, Helmut G Rennke, Zachary Hunter, Robert J Manning, Toni E Dubeau, Kirsten Meid, Monique C Minnema, Marie-Jose Kersten, Steven P Treon, Jorge J Castillo
The incidence and prognostic impact of nephropathy related to Waldenström macroglobulinaemia (WM) is currently unknown. We performed a retrospective study to assess biopsy-confirmed WM-related nephropathy in a cohort of 1391 WM patients seen at a single academic institution. A total of 44 cases were identified, the estimated cumulative incidence was 5·1% at 15 years. There was a wide variation in kidney pathology, some directly related to the WM: amyloidosis (n = 11, 25%), monoclonal-IgM deposition disease/cryoglobulinaemia (n = 10, 23%), lymphoplasmacytic lymphoma infiltration (n = 8, 18%), light-chain deposition disease (n = 4, 9%) and light-chain cast nephropathy (n = 4, 9%), and some probably related to the WM: thrombotic microangiopathy (TMA) (n = 3, 7%), minimal change disease (n = 2, 5%), membranous nephropathy (n = 1, 2%) and crystal-storing tubulopathy (n = 1, 2%)...
November 2016: British Journal of Haematology
https://www.readbyqxmd.com/read/27453048/identification-of-pgam5-as-a-mammalian-protein-histidine-phosphatase-that-plays-a-central-role-to-negatively-regulate-cd4-t-cells
#18
Saswati Panda, Shekhar Srivastava, Zhai Li, Martin Vaeth, Stephen R Fuhs, Tony Hunter, Edward Y Skolnik
Whereas phosphorylation of serine, threonine, and tyrosine is exceedingly well characterized, the role of histidine phosphorylation in mammalian signaling is largely unexplored. Here we show that phosphoglycerate mutase family 5 (PGAM5) functions as a phosphohistidine phosphatase that specifically associates with and dephosphorylates the catalytic histidine on nucleoside diphosphate kinase B (NDPK-B). By dephosphorylating NDPK-B, PGAM5 negatively regulates CD4(+) T cells by inhibiting NDPK-B-mediated histidine phosphorylation and activation of the K(+) channel KCa3...
August 4, 2016: Molecular Cell
https://www.readbyqxmd.com/read/27415417/histological-transformation-to-diffuse-large-b-cell-lymphoma-in-patients-with-waldenstr%C3%A3-m-macroglobulinemia
#19
Jorge J Castillo, Joshua Gustine, Kirsten Meid, Toni Dubeau, Zachary R Hunter, Steven P Treon
Histological transformation to diffuse large B-cell lymphoma (DLBCL) rarely occurs in patients with Waldenström Macroglobulinemia (WM). We identified 20 patients out of a cohort of 1,466 WM patients who experienced histologic transformation. The 5, 10, and 15-year cumulative incidence rates were 1, 2.4, and 3.8%, respectively. Approximately half of the patients were naive to nucleoside analogues, and a quarter were previously untreated for WM at the time of transformation. More than 80% of patients presented with extranodal involvement, 65% with high IPI scores...
October 2016: American Journal of Hematology
https://www.readbyqxmd.com/read/27414747/synthesis-and-biological-activity-of-a-new-class-of-insecticides-the-n-5-aryl-1-3-4-thiadiazol-2-yl-amides
#20
Joseph D Eckelbarger, Marshall H Parker, Maurice Ch Yap, Ann M Buysse, Jonathan M Babcock, Ricky Hunter, Yelena Adelfinskaya, Jack G Samaritoni, Negar Garizi, Tony K Trullinger
BACKGROUND: Optimization studies on a high-throughput screening (HTS) hit led to the discovery of a series of N-(6-arylpyridazin-3-yl)amides with insecticidal activity. It was hypothesized that the isosteric replacement of the pyridazine ring with a 1,3,4-thiadiazole ring could lead to more potent biological activity and/or a broader sap-feeding pest spectrum. The resulting N-(5-aryl-1,3,4-thiadiazol-2-yl)amides were explored as a new class of insecticides. RESULTS: Several methods for 2-amino-1,3,4-thiadiazole synthesis were used for the preparation of key synthetic intermediates...
April 2017: Pest Management Science
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