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https://www.readbyqxmd.com/read/27902325/targeting-naturally-occurring-epitope-variants-of-hepatitis-c-virus-with-high-affinity-t-cell-receptors
#1
Huajun Zhang, Jianbing Zhang, Lei Chen, Zhiming Weng, Ye Tian, Haifeng Zhao, Youjia Li, Lin Chen, Zhaoduan Liang, Hongjun Zheng, Wenzhuo Zhao, Shi Zhong, Yi Li
Hepatitis C virus (HCV) readily establishes chronic infection, which is characterized by failure of virus-specific CD8+ T cells. HCV uses epitope mutation and T-cell exhaustion to escape from the host immune response. Previously, we engineered high-affinity T-cell receptors (HATs) targeting HIV escape mutants. In this study, the affinity of a T-cell receptor specific for the human leukocyte antigen (HLA)-A2-restricted HCV immunodominant epitope NS3 1406-1415 (KLVALGINAV) was improved from a KD of 6.6 µM to 40 pM...
November 11, 2016: Journal of General Virology
https://www.readbyqxmd.com/read/27899587/temporal-self-regulation-of-transposition-through-host-independent-transposase-rodlet-formation
#2
Lauren E Woodard, Laura M Downes, Yi-Chien Lee, Aparna Kaja, Eyuel S Terefe, Matthew H Wilson
Transposons are highly abundant in eukaryotic genomes, but their mobilization must be finely tuned to maintain host organism fitness and allow for transposon propagation. Forty percent of the human genome is comprised of transposable element sequences, and the most abundant cut-and-paste transposons are from the hAT superfamily. We found that the hAT transposase TcBuster from Tribolium castaneum formed filamentous structures, or rodlets, in human tissue culture cells, after gene transfer to adult mice, and ex vivo in cell-free conditions, indicating that host co-factors or cellular structures were not required for rodlet formation...
November 28, 2016: Nucleic Acids Research
https://www.readbyqxmd.com/read/27894360/the-relationship-of-endotoxaemia-to-peripheral-and-central-nervous-system-inflammatory-responses-in-human-african-trypanosomiasis
#3
Lorna Maclean, Eltayb A Aboubaker, Peter G E Kennedy, Jeremy M Sternberg
Endotoxaemia has been described in cases of Human African trypanosomiasis (HAT), but it is unclear if this phenomenon influences inflammatory pathology either in the periphery or central nervous system (CNS). We studied endotoxin concentrations in the plasma and cerebrospinal fluid (CSF) of Trypanosoma brucei rhodesiense patients using the chromogenic Limulus Amoebocyte lysate assay. The relationship of endotoxin concentration to the presentation of gross signs of inflammation and the inflammatory/counter-inflammatory cytokine profile of the relevant compartments were analysed...
November 29, 2016: Parasitology
https://www.readbyqxmd.com/read/27893709/identification-of-myst3-as-a-novel-epigenetic-activator-of-er%C3%AE-frequently-amplified-in-breast-cancer
#4
L Yu, Y Liang, X Cao, X Wang, H Gao, S-Y Lin, R Schiff, X-S Wang, K Li
Estrogen receptor α (ERα) is a master driver of a vast majority of breast cancers. Breast cancer cells often develop resistance to endocrine therapy via restoration of the ERα activity through survival pathways. Thus identifying the epigenetic activator of ERα that can be targeted to block ERα gene expression is a critical topic of endocrine therapy. Here, integrative genomic analysis identified MYST3 as a potential oncogene target that is frequently amplified in breast cancer. MYST3 is involved in histone acetylation via its histone acetyltransferase domain (HAT) and, as a result, activates gene expression by altering chromatin structure...
November 28, 2016: Oncogene
https://www.readbyqxmd.com/read/27890795/inhibition-of-histone-lysine-acetyltransferase-activity-kills-cocl2-treated-and-hypoxia-exposed-gastric-cancer-cells-and-reduces-their-invasiveness
#5
Suvasmita Rath, Lopamudra Das, Shrikant Babanrao Kokate, Nilabh Ghosh, Pragyesh Dixit, Niranjan Rout, Shivaram P Singh, Subhasis Chattopadhyay, Hassan Ashktorab, Duane T Smoot, Mahadeva M Swamy, Tapas K Kundu, Sheila E Crowe, Asima Bhattacharyya
Hypoxia enhances immortality and metastatic properties of solid tumors. Deregulation of histone acetylation has been associated with several metastatic cancers but its effect on hypoxic responses of cancer cells is not known. This study aimed at understanding the effectiveness of the hydrazinocurcumin, CTK7A, an inhibitor of p300 lysine/histone acetyltransferase (KAT/HAT) activity, in inducing apoptosis of gastric cancer cells (GCCs) exposed to cobalt chloride (CoCl2), a hypoxia-mimetic chemical, or 1% O2. Here, we show that CTK7A-induced hydrogen peroxide (H2O2) generation in CoCl2-exposed and invasive gastric cancer cells (GCCs) leads to p38 MAPK-mediated Noxa expression and thereafter, mitochondrial apoptotic events...
November 23, 2016: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/27890156/physiological-and-perceptual-effects-of-a-cooling-garment-during-simulated-industrial-work-in-the-heat
#6
Cory L Butts, Cody R Smith, Matthew S Ganio, Brendon P McDermott
OBJECTIVE: Evaluate physiological and perceptual responses using a phase change cooling (PCC) garment during simulated work in the heat. METHODS: Twenty males wearing compression undergarments, coverall suit, gloves, and hard-hat, completed two randomly assigned trials (with PCC inserts or control, CON) of simulated industrial tasks in the heat (34.2 ± 0.05 °C, 54.7 ± 0.3%RH). Trials consisted of two 20 min work bouts, a maximum performance bout, and 10 min of recovery...
March 2017: Applied Ergonomics
https://www.readbyqxmd.com/read/27888809/human-adipose-tissue-derived-mesenchymal-stem-cells-alleviate-atopic-dermatitis-via-regulation-of-b-lymphocyte-maturation
#7
Tae-Hoon Shin, Byung-Chul Lee, Soon Won Choi, Ji-Hee Shin, Insung Kang, Jin Young Lee, Jae-Jun Kim, Hong-Ki Lee, Jae-Eon Jung, Yong-Woon Choi, Sung-Hoon Lee, Jin-Sang Yoon, Jin-Sub Choi, Chi-Seung Lee, Yoojin Seo, Hyung-Sik Kim, Kyung-Sun Kang
Mesenchymal stem cell (MSC) has been applied for the therapy of allergic disorders due to its beneficial immunomodulatory abilities. However, the underlying mechanisms for therapeutic efficacy are reported to be diverse according to the source of cell isolation or the route of administration. We sought to investigate the safety and the efficacy of human adipose tissue-derived MSCs (hAT-MSCs) in mouse atopic dermatitis (AD) model and to determine the distribution of cells after intravenous administration. Murine AD model was established by multiple treatment of Dermatophagoides farinae...
November 19, 2016: Oncotarget
https://www.readbyqxmd.com/read/27888549/microscope-assisted-hepatic-artery-reconstruction-in-adult-living-donor-liver-transplantation-a-review-of-325-consecutive-cases-in-a-single-center
#8
Chen-Fang Lee, Johnny Chuieng Yi Lu, Ahmed Zidan, Ching-Song Lee, Tsung-Han Wu, Kun-Ming Chan, Wei-Chen Lee
BACKGROUND: Despite the technical and medical improvements in the recent years, hepatic artery thrombosis (HAT) remains a devastating complication after living donor liver transplantation (LDLT). We described our surgical techniques and monitoring protocols for hepatic artery reconstruction. We reported one of the lowest incidence rates of HAT in the literature. METHODS: Between 2008 and 2015, a total of 325 LDLTs performed at our institute were retrospectively analyzed...
November 26, 2016: Clinical Transplantation
https://www.readbyqxmd.com/read/27884502/the-role-of-arterial-conduits-for-revascularisation-in-adult-orthotopic-liver-transplantation
#9
REVIEW
Nikolaos A Chatzizacharias, Mohamed Aly, Raaj K Praseedom
The successful outcome in orthotopic liver transplantation (OLT) is critically dependent on the uncompromised hepatic graft blood inflow. Arterial conduits represent a good solution in cases where conventional revascularisation is not possible. The purpose of this systematic review is to analyse the published evidence on the use of arterial conduits in adult OLT. After review of the Pubmed and EMBASE databases, 19 relevant studies were identified and analysed. Even though patient survival was comparable, most large studies reported worse 1-, 3- and 5-year graft survival rates compared to grafts with standard arterial revascularisation...
November 4, 2016: Transplantation Reviews
https://www.readbyqxmd.com/read/27884172/spatial-distribution-and-trypanosome-infection-of-tsetse-flies-in-the-sleeping-sickness-focus-of-zimbabwe-in-hurungwe-district
#10
William Shereni, Neil E Anderson, Learnmore Nyakupinda, Giuliano Cecchi
BACKGROUND: In Zimbabwe, cases of human African trypanosomiasis (HAT) are caused by the unicellular protozoan Trypanosoma brucei, sub-species T. b. rhodesiense. They are reported from the tsetse-infested area in the northern part of the country, broadly corresponding to the valley of the Zambezi River. Tsetse-transmitted trypanosomes, in particular T. congolense and T. vivax, also cause morbidity and mortality in livestock, thus generating poverty and food insecurity. Two species of tsetse fly, Glossina morsistans morsitans and G...
November 25, 2016: Parasites & Vectors
https://www.readbyqxmd.com/read/27883238/striking-doping-effects-on-thermal-methane-activation-mediated-by-the-heteronuclear-metal-oxides-xalo%C3%A2-%C3%A2-x-v-nb-and-ta
#11
Xiao-Nan Wu, Jilai Li, Maria Schlangen, Shaodong Zhou, Patricio González-Navarrete, Helmut Schwarz
The thermal reactivity of the heteronuclear metal-oxide cluster cations [XAlO₄]·+ (X = V, Nb and Ta) towards methane has been studied by using mass spectrometry in conjunction with quantum mechanical calculations. Experimentally, hydrogen-atom transfer (HAT) from methane is mediated by all the three oxide clusters at ambient conditions. However, [VAlO₄]·+ is unique in that this cluster transforms directly methane into formaldehyde. The absence of this reaction for the Nb and Ta analogues demonstrates a striking doping effect on the chemoselectivity in the conversion of methane...
November 24, 2016: Chemistry: a European Journal
https://www.readbyqxmd.com/read/27883221/alcohol-exposure-causes-overexpression-of-heart-development-related-genes-by-affecting-the-histone-h3-acetylation-via-bmp-signaling-pathway-in-cardiomyoblast-cells
#12
Jin Shi, Weian Zhao, Bo Pan, Min Zheng, Lina Si, Jing Zhu, Lingjuan Liu, Jie Tian
BACKGROUND: Abusive alcohol utilization of pregnant woman may cause congenital heart disease (CHD) of fetus, where alcohol ignites histone H3 hyperacetylation leading to abnormal development of heart morphogenesis and associated genes. Knowledge about the regularized upstream genes is little, but bone morphogenetic protein (BMP) signaling may actively and prominently take part in alteration in acetylation of histone H3. The supreme objective of this study was to unearth the involvement of BMP signaling pathway in alcohol-driven hyperacetylation of histone H3 in cardiomyoblast cells...
November 24, 2016: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/27880991/vascular-complications-in-living-donor-liver-transplantation-at-a-high-volume-centre-evolving-protocols-and-trends-observed-over-10-years
#13
A R Shiraz, M A Nayeem, S Agarwal, N Goyal, S Gupta
Vascular complications continue to have devastating effect; although their nature, incidence and outcome might have actually changed with increasing experience and proficiency in high volume centers. Aim was to analyze the trends observed in vascular complications with changing protocols in adult and pediatric- living donor liver transplantation (A-LDLT and P-LDLT) over 10 years in two time frames in terms of nature, incidence and outcome. It is a retrospective analysis of 391 (Group I= Jan. 2006- Dec.2010) and 741 (Group II= Jan...
November 23, 2016: Liver Transplantation
https://www.readbyqxmd.com/read/27877082/histone-deacetylase-inhibitor-trichostatin-a-promotes-the-apoptosis-of-osteosarcoma-cells-through-p53-signaling-pathway-activation
#14
Zhantao Deng, Xiaozhou Liu, Jiewen Jin, Haidong Xu, Qian Gao, Yong Wang, Jianning Zhao
Purpose: The purpose of this study was to investigate the profile of histone deacetylase (HDAC) activity and expression in osteosarcoma cells and tissues from osteosarcoma patients and to examine the mechanism by which a histone deacetylase (HDAC) inhibitor, Trichostatin A (TSA), promotes the apoptosis of osteosarcoma cells. Methods: HDAC activity and histone acetyltransferase (HAT) activity were determined in nuclear extracts of MG63 cells, hFOB 1.19 cells and tissues from 6 patients with primary osteosarcoma...
2016: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/27874008/the-gcn5-cited2-pka-signalling-module-controls-hepatic-glucose-metabolism-through-a-camp-induced-substrate-switch
#15
Mashito Sakai, Tomoko Tujimura-Hayakawa, Takashi Yagi, Hiroyuki Yano, Masaru Mitsushima, Hiroyuki Unoki-Kubota, Yasushi Kaburagi, Hiroshi Inoue, Yoshiaki Kido, Masato Kasuga, Michihiro Matsumoto
Hepatic gluconeogenesis during fasting results from gluconeogenic gene activation via the glucagon-cAMP-protein kinase A (PKA) pathway, a process whose dysregulation underlies fasting hyperglycemia in diabetes. Such transcriptional activation requires epigenetic changes at promoters by mechanisms that have remained unclear. Here we show that GCN5 functions both as a histone acetyltransferase (HAT) to activate fasting gluconeogenesis and as an acetyltransferase for the transcriptional co-activator PGC-1α to inhibit gluconeogenesis in the fed state...
November 22, 2016: Nature Communications
https://www.readbyqxmd.com/read/27873414/virtual-sorting-hat-%C3%A2-technology-for-the-matching-of-candidates-to-residency-training-programs
#16
Pishoy Gouda, Martin Cormican
BACKGROUND: The matching of medical students and trainees to appropriate training programmes poses many challenges, including financial cost and applicant stress. There are few studies that have examined alternatives to the current process of matching candidates to specialist training. Case reports from Hogwarts School of Witchcraft and Wizardry(™) have suggested that wearable technology may be used to assign individuals with particular sets of skills and virtues to an appropriate house...
December 2016: Medical Education
https://www.readbyqxmd.com/read/27870825/evaluation-of-pediatric-liver-transplantation-related-artery-complications-using-intra-operative-multi-parameter-ultrasonography
#17
Xiuyun Ren, Junhui Guan, Nong Gao, Hong Niu, Jie Tang
BACKGROUND This article discusses the value of using multi-parameter evaluation of intra-operative ultrasonography in evaluating pediatric liver transplantation-related arterial complications. MATERIAL AND METHODS Sixty-eight children receiving a liver transplant underwent intraoperative ultrasonography for monitoring of artery hemodynamics. The ultrasonic measurement parameters included the diameters of the hepatic artery (HA) of the donor and anastomotic stoma, peak systolic velocity (PSV), resistance index (RI), acceleration time (SAT), and blood flow volume...
November 21, 2016: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/27862570/-communication-about-melanoma-and-risk-reduction-after-melanoma-diagnosis
#18
Vivian M Rodríguez, Marianne Berwick, Jennifer L Hay
OBJECTIVE: Melanoma patients are advised to perform regular risk reduction practices including sun protection as well as skin self-examinations (SSE) and physician-led examinations. Melanoma-specific communication regarding family risk and screening may promote such behaviors. To this end, associations between patients' melanoma-specific communication and risk reduction were examined. METHODS: Melanoma patients (N = 169) drawn from a population-based cancer registry reported their current risk reduction practices, perceived risk of future melanoma, and communication with physicians and relatives about melanoma risk and screening...
November 15, 2016: Psycho-oncology
https://www.readbyqxmd.com/read/27858064/-in-vivo-and-in-vitro-experimental-study-on-the-effect-of-fluoride-induced-autophagy-in-rat-hat-7-cell-line
#19
Shuang Lei, Ying Zhang, Kai-Qiang Zhang, Jian Li
PURPOSE: To study the effect of fluoride on autophagy in rat ameloblasts both in vitro and in vivo. METHODS: Logarithmic-phase HAT-7 cells were cultured in different concentrations of fluoride for 48h. Transmission electron microscopy (TEM) was used to detect autophagosomes. Western blot and RT-qPCR were carried out to examine the expression of LC3 and Beclin 1. Forty Wistar rats were divided into 4 groups randomly. The expression of LC3 and Beclin 1 in rats was investigated by immunohistochemical staining in vivo...
August 2016: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
https://www.readbyqxmd.com/read/27857998/a-parp1-erk2-synergism-is-required-for-stimulation-induced-expression-of-immediate-early-genes
#20
M Cohen-Armon
A PARP1-Erk2 synergism was required to generate synaptic long-term potentiation in the CA3-CA1 hippocampal connections. This molecular mechanism was associated with the recently identified pivotal role of polyADP-ribosylation in learning. High frequency electrical stimulation of cortical and hippocampal neurons induced binding of phosphorylated Erk2 (transported into the nucleus) to the nuclear protein PARP1. PARP1-Erk2 binding induced PARP1 activation and polyADP-ribosylation of its prominent substrate, linker histone H1...
2016: Gene & Translational Bioinformatics
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