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https://www.readbyqxmd.com/read/28529563/role-of-nkg2d-in-cytokine-induced-killer-cells-against-lung-cancer
#1
Xiaowei Yin, Xuzhang Lu, Zhang Xiuwen, Zhou Min, Rong Xiao, Zhengdao Mao, Qian Zhang
It has been previously demonstrated that cytokine-induced killer (CIK) cells possess potent cytotoxicity against various cancer cells, including lung cancer cells. However, the mechanism by which CIK cells recognize lung cancer cells has not been understood. The interaction between killer cell lectin like receptor K1 (NKG2D) receptor and NKG2D ligands was demonstrated to serve an important role in target cell killing by natural killer cells. The present study investigated whether NKG2D receptor and NKG2D ligand interactions are involved in the CIK-directed killing of lung cancer cells...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28529141/z-505-hydrochloride-an-orally-active-ghrelin-agonist-attenuates-the-progression-of-cancer-cachexia-via-anabolic-hormones-in-colon-26-tumor-bearing-mice
#2
Makoto Yoshimura, Yoshihiro Shiomi, Yuta Ohira, Mineo Takei, Takao Tanaka
Cancer cachexia is a progressive wasting syndrome characterized by anorexia and weight loss, specifically muscle wasting and fat depletion. There is no therapeutic agent for treatment of this syndrome. We investigated the anti-cachexia effects of Z-505 hydrochloride (Z-505), a new oral growth hormone secretagogue receptor 1a (GHSR1a) agonist, using a mouse model of cancer cachexia. We performed a calcium flux assay in Chinese hamster ovary (CHO-K1) cells stably expressing human GHSR1a to quantify the agonistic activity of Z-505...
May 18, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28527336/title-potassium-application-regulates-nitrogen-metabolism-and-osmotic-adjustment-in-cotton-gossypium-hirsutum-l-functional-leaf-under-drought-stress
#3
Rizwan Zahoor, Wenqing Zhao, Muhammad Abid, Haoran Dong, Zhiguo Zhou
To evaluate the role of potassium (K) in maintaining nitrogen metabolism and osmotic adjustment development of cotton functional leaves to sustain growth under soil drought and rewatering conditions, the plants of two cotton cultivars Siza 3 (low-K sensitive) and Simian 3 (low-K tolerant), were grown under three different K rates (K0, K1, and K2; 0, 150, and 300kgK2Oha(-1), respectively) and exposed to drought stress with 40±5% soil relative water content (SRWC). The drought stress was applied at flowering stage by withholding water for eight days followed by rewatering to a well-watered level (75±5% SRWC)...
May 4, 2017: Journal of Plant Physiology
https://www.readbyqxmd.com/read/28526297/modeling-the-structure-of-keratin-1-and-10-terminal-domains-and-their-misassembly-in-keratoderma
#4
Cedric Badowski, Adelene Y L Sim, Chandra Verma, Ildikó Szeverényi, Chidambaram Natesavelalar, Ana Terron-Kwiatkowski, John Harper, Edel A O'Toole, E Birgitte Lane
The terminal domains of suprabasal keratins of the skin epithelium are very resistant to evidence-based structural analysis because of their inherent flexibility and lack of predictable structure. We present a model for the structure and interactions of the head and tail domains of epidermal keratins K1 and K10, based on all-atom 3D simulations of keratin primary amino acid sequences, and tyrosine phosphorylation predictions, extracted from published databases. We observed that K1 and K10 end domains are likely to form a tetrameric terminal domain complex (TTDC) incorporating a reversibly extendable region potentially acting as a molecular spring...
May 16, 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28522324/non-invasive-three-dimensional-imaging-of-escherichia-coli-k1-infection-using-diffuse-light-imaging-tomography-combined-with-micro-computed-tomography
#5
REVIEW
Luci A Witcomb, Julie Czupryna, Kevin P Francis, Gad Frankel, Peter W Taylor
In contrast to two-dimensional bioluminescence imaging, three dimensional diffuse light imaging tomography with integrated micro-computed tomography (DLIT-μCT) has the potential to realise spatial variations in infection patterns when imaging experimental animals dosed with derivatives of virulent bacteria carrying bioluminescent reporter genes such as the lux operon from the bacterium Photorhabdus luminescens. The method provides an opportunity to precisely localise the bacterial infection sites within the animal and enables the generation of four-dimensional movies of the infection cycle...
May 15, 2017: Methods: a Companion to Methods in Enzymology
https://www.readbyqxmd.com/read/28515717/the-leaderless-bacteriocin-enterocin-k1-is-highly-potent-against-enterococcus-faecium-a-study-on-structure-target-spectrum-and-receptor
#6
Kirill V Ovchinnikov, Per Eugen Kristiansen, Daniel Straume, Marianne S Jensen, Tamara Aleksandrzak-Piekarczyk, Ingolf F Nes, Dzung B Diep
Enterocin K1 (EntK1), enterocin EJ97 (EntEJ97), and LsbB are three sequence related leaderless bacteriocins. Yet LsbB kills only lactococci while EntK1 and EntEJ97 target wider spectra with EntK1 being particularly active against Enterococcus faecium, including nosocomial multidrug resistant isolates. NMR study of EntK1 showed that it had a structure very similar to LsbB - both having an amphiphilic N-terminal α-helix and an unstructured C-terminus. The α-helix in EntK1 is, however, about 3-4 residues longer than that of LsbB...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28507520/in-vitro-and-in-silico-antidiabetic-and-antimicrobial-evaluation-of-constituents-from-kickxia-ramosissima-nanorrhinum-ramosissimum
#7
Adnan Amin, Emmy Tuenter, Kenn Foubert, Jamhsed Iqbal, Paul Cos, Louis Maes, Vassiliki Exarchou, Sandra Apers, Luc Pieters
Background and Aims:Kickxia ramosissima (Wall.) Janch (or Nanorrhinum ramosissimum (Wall.) Betsche is a well-known medicinal plant in Pakistan that is traditionally used in diabetic and inflammatory conditions. Because little information is available on its phytochemical composition, a range of constituents were isolated and evaluated in vitro in assays related to the traditional use. Methods: Dried whole plant material was extracted and chromatographically fractionated. Isolated constituents were evaluated in silico and in vitro in assays related to the traditional use against diabetes (inhibition of α-glucosidase activity; inhibition of advanced glycation endproducts) and in inflammatory conditions (inhibition of AAPH induced linoleic acid peroxidation, inhibition of 15-LOX, antimicrobial activity)...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28502016/correlation-between-in-vitro-and-in-vivo-antimalarial-activity-of-compounds-using-cq-sensitive-and-cq-resistant-strains-of-plasmodium-falciparum-and-cq-resistant-strain-of-p-yoelii
#8
Kumkum Srivastava, Pooja Agarwal, Awakash Soni, S K Puri
Present efforts have been made to establish a correlation between in vitro and in vivo antimalarial activity using MIC, IC50 and IC90 values against CQ-sensitive (3D7) and CQ-resistant (K1) strains of Plasmodium falciparum and in vivo activity against Plasmodium yoelii. The method of discriminant function analysis (DFA) was applied to analyze the data. It was observed that in vitro IC90 values against both 3D7 and K1 strains (p < 0.001) have strong correlation with in vivo curative activity. The respective IC50 and IC90 values of compounds, which cured mice (i...
May 13, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28501652/a-new-adenovector-system-for-implementing-thymulin-gene-therapy-for-inflammatory-disorders
#9
María F Zappa-Villar, Micaela López-León, Joaquín Pardo, Mariana Costa, Rosana Crespo, Mireille Dardenne, Rodolfo G Goya, Paula C Reggiani
Thymulin is a thymic peptide possessing anti-inflammatory effects. In order to manipulate thymulin expression in gene therapy studies, we built a bidirectional regulatable two-vector Tet-Off system and the corresponding control system. The experimental two-vector system, ETV, consists of a recombinant adenovector (RAd) harboring an expression cassette centered on a Tet-Off bidirectional promoter flanked by a synthetic gene for thymulin and the gene for humanized Green Fluorescent Protein (hGFP). The second adenovector of this system, RAd-tTA, constitutively expresses the regulatory protein tTA...
May 11, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28498860/genetic-micro-epidemiology-of-malaria-in-papua-indonesia-extensive-p-vivax-diversity-and-a-distinct-subpopulation-of-asymptomatic-p-falciparum-infections
#10
Zuleima Pava, Rintis Noviyanti, Irene Handayuni, Hidayat Trimarsanto, Leily Trianty, Faustina H Burdam, Enny Kenangalem, Retno A S Utami, Yusrifar K Tirta, Farah Coutrier, Jeanne R Poespoprodjo, Ric N Price, Jutta Marfurt, Sarah Auburn
BACKGROUND: Genetic analyses of Plasmodium have potential to inform on transmission dynamics, but few studies have evaluated this on a local spatial scale. We used microsatellite genotyping to characterise the micro-epidemiology of P. vivax and P. falciparum diversity to inform malaria control strategies in Timika, Papua Indonesia. METHODS: Genotyping was undertaken on 713 sympatric P. falciparum and P. vivax isolates from a cross-sectional household survey and clinical studies conducted in Timika...
2017: PloS One
https://www.readbyqxmd.com/read/28498668/kinetics-of-the-reactions-of-no3-radical-with-methacrylate-esters
#11
Li Zhou, A R Ravishankara, Steven S Brown, Mahmoud Idir, Kyle J Zarzana, Veronique Daele, Abdelwahid Mellouki
Two different experimental methods (relative rate and absolute rate methods) were used to measure the rate coefficients for the reactions of NO3 radical with six methacrylate esters: methyl methacrylate (MMA, k1), ethyl methacrylate (EMA, k2), propyl methacrylate (PMA, k3), isopropyl methacrylate (IPMA, k4), butyl methacrylate (BMA, k5), isobutyl methacrylate (IBMA, k6). In the relative rate method, the loss of the esters relative to that of a reference compound was followed in a 7300 L Teflon-walled chamber at (298±2) K and (1000±5) hpa...
May 12, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28498441/radiolabeling-of-vegf165-with-99mtc-to-evaluate-vegfr-expression-in-tumor-angiogenesis
#12
Filippo Galli, Marco Artico, Samanta Taurone, Isabella Manni, Enrica Bianchi, Giulia Piaggio, Bruce D Weintraub, Mariusz W Szkudlinski, Enzo Agostinelli, Rudi A J O Dierckx, Alberto Signore
Angiogenesis is the main process responsible for tumor growth and metastatization. The principal effector of such mechanism is the vascular endothelial growth factor (VEGF) secreted by cancer cells and other components of tumor microenvironment. Radiolabeled VEGF analogues may provide a useful tool to noninvasively image tumor lesions and evaluate the efficacy of anti-angiogenic drugs that block the VEGFR pathway. Aim of the present study was to radiolabel the human VEGF165 analogue with 99mTechnetium (99mTc) and to evaluate the expression of VEGFR in both cancer and endothelial cells in the tumor microenvironment...
May 8, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28496349/effect-of-vitamin-k-supplementation-on-insulin-sensitivity-a-meta-analysis
#13
Naeti Suksomboon, Nalinee Poolsup, Htoo Darli Ko Ko
OBJECTIVE: To perform a systematic review and meta-analysis of randomized, placebo-controlled trials to assess the effect of vitamin K supplementation on insulin sensitivity. DATA SOURCES: MEDLINE, the Cochrane Library, CINAHL, Web of Science, Scopus, clinicaltrials.gov, and clinicaltrialresults.org were searched up to January 2017. Reference lists of related papers were also scanned. STUDY SELECTION: Randomized controlled trials were selected if they compared vitamin K supplementation with placebo or no treatment and reported homeostasis model assessment of insulin resistance, fasting plasma glucose, fasting plasma insulin, C-reactive protein, adiponectin, leptin, or interleukin-6 levels...
2017: Diabetes, Metabolic Syndrome and Obesity: Targets and Therapy
https://www.readbyqxmd.com/read/28494067/association-of-dietary-vitamin-k1-intake-with-the-incidence-of-cataract-surgery-in-an-adult-mediterranean-population-a-secondary-analysis-of-a-randomized-clinical-trial
#14
María L Camacho-Barcia, Mònica Bulló, Jesús F Garcia-Gavilán, Miguel Ruiz-Canela, Dolores Corella, Ramón Estruch, Montserrat Fitó, Alfredo García-Layana, Fernando Arós, Miquel Fiol, José Lapetra, Lluis Serra-Majem, Xavier Pintó, Ana García-Arellano, Ernest Vinyoles, José Vicente Sorli, Jordi Salas-Salvadó
Importance: Cataract, one of the most frequent causes of blindness in developed countries, is strongly associated with aging. The exact mechanisms underlying cataract formation are still unclear, but growing evidence suggests a potential role of inflammatory and oxidative processes. Therefore, antioxidant and anti-inflammatory factors of the diet, such as vitamin K1, could play a protective role. Objective: To examine the association between dietary vitamin K1 intake and the risk of incident cataracts in an elderly Mediterranean population...
May 11, 2017: JAMA Ophthalmology
https://www.readbyqxmd.com/read/28493129/the-omics-revolution-in-cho-biology-roadmap-to-improved-cho-productivity
#15
Hussain Dahodwala, Susan T Sharfstein
Increased understanding of Chinese hamster ovary (CHO) cell physiology has been ushered in upon availability of the parental CHO-K1 cell line genome. Free and openly accessible sequence information has complemented transcriptomic and proteomic studies. The previous decade has also seen an increase in sensitivity and accuracy of proteomic methods due to technology development. In this genomic era, high-throughput screening methods, sophisticated informatic tools, and models continually drive major innovations in cell line development and process engineering...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28490586/deletion-of-the-k1l-gene-results-in-a-vaccinia-virus-that-is-less-pathogenic-due-to-muted-innate-immune-responses-yet-still-elicits-protective-immunity
#16
Ariana G Bravo Cruz, Aiguo Han, Edward J Roy, Arielle B Guzmán, Rita J Miller, Elizabeth A Driskell, William D O'Brien, Joanna L Shisler
All viruses strategically alter the anti-viral immune response to their benefit. The vaccinia virus (VACV) K1 protein has multiple immunomodulatory effects in tissue culture models of infection, including NF-κB antagonism. However, the effect of K1 during animal infection is poorly understood. We determined that a K1L-less vaccinia virus (vΔK1L) was less pathogenic than wild-type VACV in intranasal and intradermal models of infection. Decreased pathogenicity correlated with diminished virus replication in intranasally-infected mice...
May 10, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28485962/collisional-intermolecular-energy-transfer-from-a-n2-bath-at-room-temperature-to-a-vibrationlly-cold-c6f6-molecule-using-chemical-dynamics-simulations
#17
Amit K Paul, Diego Donzis, William L Hase
Chemical dynamics simulations were performed to study collisional intermolecular energy transfer from a thermalized N2 bath at 300 K to vibrationally "cold" C6F6. The vibrational temperature of C6F6 is taken as 50 K, which corresponds to a classical vibrational energy of 2.98 kcal/mol. The temperature ratio between C6F6 and the bath is 1/6, the reciprocal of the same ratio for previous "hot" C6F6 simulations (J. Chem. Phys. 2014, 140, 194103). Simulations were also done for a C6F6 vibrational temperature of 0 K...
May 19, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28485710/epidemiological-typing-of-multidrug-resistant-klebsiella-pneumoniae-which-causes-paediatric-ventilator-associated-pneumonia-in-egypt
#18
Eman R Mohamed, Sherine A Aly, Hamada M Halby, Shabaan H Ahmed, Amira M Zakaria, Osama M El-Asheer
PURPOSE: Multidrug-resistant Klebsiella pneumoniae is a common nosocomial pathogen that plays an important role in ventilator-associated pneumonia (VAP). This study aimed to define the clonal relatedness of K. pneumoniae strains isolated from paediatric VAP in addition to those isolated from environmental samples. METHODOLOGY: This study included 19 clinical and 4 environmental K. pneumoniae isolates recovered from the paediatric intensive care unit (PICU) in Assiut University Children's Hospital...
May 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28485437/crossover-from-localized-to-itinerant-states-in-hydrocarbon-mott-insulators
#19
Quynh T N Phan, Shimpei Oikawa, Satoshi Heguri, Yuki Matsuda, Katsumi Tanigaki
Crossover from an itinerant state to an isolated electronic state in electron-doped polycyclic aromatic hydrocarbon (PAH) was studied for the two smallest zigzag-type molecules of naphthalene (NN) and anthracene (AN) by focusing on their 1 : 1 stoichiometry, A1(NN) and A1(AN), with alkali metals (A = K and Rb). The competition between on-site Coulombic repulsion energy (U) and bandwidth (W) was argued in terms of their magnetic and electrical properties upon lattice expansion, when A varies from K, with a smaller ionic radius, to Rb, with a larger ionic radius...
May 9, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28476488/improving-pertuzumab-production-by-gene-optimization-and-proper-signal-peptide-selection
#20
Amin Ramezani, Elham Mahmoudi Maymand, Mahsa Yazdanpanah-Samani, Ahmad Hosseini, Fatemeh Sadat Toghraie, Abbas Ghaderi
Using proper signal peptide and codon optimization are important factors that must be considered when designing the vector to increase protein expression in Chinese Hamster Ovary (CHO) cells. The aim of the present study is to investigate how to enhance Pertuzumab production through heavy and light chain coding gene optimization and proper signal peptide selection. First, CHO-K1 cells were transiently transfected with whole-antibody-gene-optimized, variable-regions-optimized and non-optimized constructs and then we employed five different signal peptides to improve the secretion efficiency of Pertuzumab...
May 3, 2017: Protein Expression and Purification
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