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https://www.readbyqxmd.com/read/29156818/a-plasmid-containing-cpg-odn-as-vaccine-adjuvant-against-grass-carp-reovirus-in-grass-carp-ctenopharyngodon-idella
#1
Hang Su, Zhiwei Liao, Gailing Yuan, Jianguo Su
CpG oligodeoxynucleotides (ODNs) are proved to have strong immune stimulatory activity. Plasmids containing CpG ODNs could be conveniently and low-costly used as vaccine adjuvant. However, they are different among various plasmids, motif repeats, species, etc. In the present study, plasmid pcDNA3.1 (+) containing five repetitions of CpG ODN 1670A named pcDNA3.1-1670A*5 with strong immunostimulation was screened out from twelve recombinant plasmids and three empty vectors by cell proliferation activity, interferon promoter activities and immune related gene expressions in CIK cells...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156763/elas1-induces-apoptotic-death-in-adenocarcinoma-du145-and-squamous-cell-carcinoma-sas-cancer-cells-but-not-in-normal-kd-cells
#2
Toshihiro Uchihashi, Kaori Ota, Yusuke Yabuno, Shouichi Ohno, Kohshiro Fukushima, Yoko Naito, Mikihiko Kogo, Norikazu Yabuta, Hiroshi Nojima
We previously reported that an ELAS1 peptide containing 29 amino acids induces apoptotic death in U2OS human osteosarcoma cells following DNA double-strand break insults. Here, we show that ELAS1 also caused apoptosis in prostate adenocarcinoma DU145 cells and tongue squamous-cell carcinoma SAS cells. ELAS1 appears to be safe because it induced apoptosis only in cancer cells, not in normal KD cells. Because the effect of ELAS1 is dependent on increased stability of p53 and enhanced phosphorylation of p53-S46, we exogenously expressed wild-type p53 protein to fully promote ELAS1-mediated induction of apoptosis in SAS cells...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156616/a-novel-mutation-in-the-fibrinogen-b%C3%AE-chain-c-490g-a-end-of-exon-3-causes-a-splicing-abnormality-and-ultimately-leads-to-congenital-hypofibrinogenemia
#3
Chiaki Taira, Kazuyuki Matsuda, Shinpei Arai, Mitsutoshi Sugano, Takeshi Uehara, Nobuo Okumura
We found a novel heterozygous mutation in the fibrinogen Bβ chain (c.490G>A) of a 3-year-old girl with congenital hypofibrinogenemia. To clarify the complex genetic mechanism, we made a mini-gene including a FGB c.490G>A mutation region, transfected it into a Chinese Hamster Ovary (CHO) cell line, and analyzed reverse transcription (RT) products. The assembly process and secretion were examined using recombinant mutant fibrinogen. Direct sequencing demonstrated that the mutant RT product was 99 bp longer than the wild-type product, and an extra 99 bases were derived from intron 3...
November 20, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29156217/characterization-of-udp-glucosyltransferase-from-indigofera-tinctoria
#4
Shintaro Inoue, Toshiki Moriya, Rihito Morita, Keiko Kuwata, Sanjog T Thul, Bijaya K Sarangi, Yoshiko Minami
Indican is a secondary metabolite in Indigofera tinctoria; its synthesis from indoxyl and UDP-glucose is catalyzed by a UDP-glucosyltransferase (UGT). In this study, we partially purified UGT extracted from I. tinctoria leaves and analyzed the protein by peptide mass fingerprinting. We identified two fragments that were homologous to UGT after comparison with the transcriptomic data of I. tinctoria leaves. The fragments were named itUgt1 and itUgt2 and were amplified using rapid amplification of cDNA ends polymerase chain reaction to obtain full-length cDNAs...
November 6, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/29156055/analysis-of-an-adtkd-family-with-a-novel-frameshift-mutation-in-muc1-reveals-characteristic-features-of-mutant-muc1-protein
#5
Satoko Yamamoto, Jun-Ya Kaimori, Takuji Yoshimura, Tomoko Namba, Atsuko Imai, Kaori Kobayashi, Ryoichi Imamura, Naotsugu Ichimaru, Kazuto Kato, Akihiro Nakaya, Shiro Takahara, Yoshitaka Isaka
Background: Medullary cystic kidney disease Type 1 is an autosomal dominant tubulointerstitial kidney disease (ADTKD). Recently, mucin 1 ( MUC1 ) was identified as a causal gene of medullary cystic kidney disease (ADTKD-MUC1). However, the MUC1 mutation was found to be a single cytosine insertion in a single copy of the GC-rich variable number of tandem repeats (VNTRs), which are very difficult to analyze by next-generation sequencing. To date, other mutations have not been detected in ADTKD-MUC1, and the mutant MUC1 protein has not been analyzed because of the difficulty of genetically modifying the VNTR sequence...
June 1, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/29155755/in-vivo-detection-and-analysis-of-rb-protein-sumoylation-in-human-cells
#6
Fengxi Meng, Xiaofeng Li, Hui Ren, Jiang Qian
The post-translational modifications of proteins are critical for the proper regulation of intracellular signal transduction. Among these modifications, small ubiquitin-related modifier (SUMO) is a ubiquitin-like protein that is covalently attached to the lysine residues of a variety of target proteins to regulate cellular processes, such as gene transcription, DNA repair, protein interaction and degradation, subcellular transport, and signal transduction. The most common approach to detecting protein SUMOylation is based on the expression and purification of recombinant tagged proteins in bacteria, allowing for an in vitro biochemical reaction which is simple and suitable for addressing mechanistic questions...
November 2, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29155449/baicalein-inhibits-acinar-to-ductal-metaplasia-of-pancreatic-acinal-cell-ar42j-via-improving-the-inflammatory-microenvironment
#7
Wei-Ling Pu, Ying-Ying Luo, Ru-Yu Bai, Ao-Wei Guo, Kun Zhou, Yun-Sha Zhang, Lin Miao, Curzio Rüegg, Micheal O Hottiger, Xiu-Mei Gao, Li-Kang Sun
Pancreatic ductal adenocarcinoma (PDAC) is one of the most aggressive cancers. Recent research has demonstrated that chronic pancreatitis (CP) is associated with an increased risk of PDAC, partly due to acinar-to-ductal metaplasia (ADM). Baicalein has been shown to exert anti-inflammatory and anti-tumor effects for CP or PDAC, respectively. The aim of our study was to investigate the effect of baicalein, and the putative underlying mechanism, on inflammatory cytokines-induced ADM of rat pancreatic acinar cell line AR42J...
November 20, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29155272/oral-immunization-with-recombinant-lactobacillus-casei-expressing-ompai-confers-protection-against-aeromonas-veronii-challenge-in-common-carp-cyprinus-carpio
#8
Dong-Xing Zhang, Yuan-Huan Kang, Long Chen, Shahrood Ahmed Siddiqui, Chun-Feng Wang, Ai-Dong Qian, Xiao-Feng Shan
Aeromonas veronii is a gram-negative pathogen capable of infecting both fish and mammals, including humans, and natural infection in fish results in irreparable damage to the aquaculture industry. Lactic acid bacteria (LAB) have a number of properties that make them attractive candidates as delivery vehicles for presentation to the mucosa sites of compounds with pharmaceutical interest, in particular vaccines. In this study, we generated two recombinant Lactobacillus casei (surface-displayed or secretory) expressing the OmpAI of A...
November 16, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29155258/insights-into-the-multifunctional-role-of-natural-killer-enhancing-factor-a-nkef-a-prx1-in-big-belly-seahorse-hippocampus-abdominalis-dna-protection-insulin-reduction-h2o2-scavenging-and-immune-modulation-activity
#9
G I Godahewa, N C N Perera, Jehee Lee
Natural killer enhancing factor A (NKEF-A), also known as peroxiredoxin 1 (Prx1), is a well-known antioxidant involved in innate immunity. Although NKEF-A/Prx1 has been studied in different fish species, the present study broadens the knowledge of NKEF-A gene in terms of molecular structure, function, and immune responses in fish species. Hippocampus abdominalis NKEF-A (HaNKEF-A) cDNA encoded a putative protein of 198 amino acids containing a thioredoxin_2 domain, VCP motifs, and three conserved cysteine residues including peroxidatic and resolving cysteines...
November 16, 2017: Gene
https://www.readbyqxmd.com/read/29154855/identification-and-characterization-of-a-calcium-dependent-lily-type-lectin-from-black-rockfish-sebastes-schlegelii-molecular-antennas-are-involved-in-host-defense-via-pathogen-recognition
#10
Roopasingam Kugapreethan, Qiang Wan, Jehanathan Nilojan, Jehee Lee
Lily-type lectins (LTLs) are soluble pathogen recognition receptors (PRRs) that contain one or more characteristic carbohydrate recognition domains (CRDs), through which LTLs bind reversibly and specifically to cognate sugar moieties present on the invading pathogen membrane and trigger the host innate immune responses. In this study, we identified a LTL homolog (SsLTL) from black rockfish (Sebastes schlegelii) transcriptome database and its functional roles in innate immunity was investigated in vitro and in vivo...
November 14, 2017: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/29154408/chemokine-c-c-motif-ligand-25-expressed-by-trophoblast-cells-and-leukocytes-bearing-its-receptor-ccr9-an-alliance-during-embryo-implantation
#11
Rodrigo Barbano Weingrill, Mara S Hoshida, Ciro Dresch Martinhago, Simone Correa-Silva, Elaine Cardoso, Patrícia Palmeira, Claudio Romero Farias Marinho, Estela Bevilacqua
PROBLEM: We hypothesized that trophoblast expression of Ccl25 attracts a specific leukocyte cell population to the implantation site for local regulation. METHOD OF STUDY: Mice blastocysts, ectoplacental cones, and decidua at gestational days 3.5-7.5 were evaluated for Ccl25 and Ccr9 expressions. Peripheral availability and characterization of Ccr9+ leukocytes were determined by flow cytometry. Leukocyte chemotaxis was assessed in the presence of Ccl25 recombinant protein and embryos using antisense oligomers (ODNs) to Ccl25 and Ccr9 neutralizing antibody...
November 20, 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/29153955/characterization-of-ph-tolerant-and-thermostable-gh-134-%C3%AE-1-4-mannanase-ssgh134-possessing-carbohydrate-binding-module-10-from-streptomyces-sp-nrrl-b-24484
#12
Kiyota Sakai, Saran Kimoto, Yuta Shinzawa, Miho Minezawa, Kengo Suzuki, Sadanari Jindou, Masashi Kato, Motoyuki Shimizu
A GH 134 β-1,4-mannanase SsGH134 from Streptomyces sp. NRRL B-24484 possesses a carbohydrate binding module (CBM) 10 and a glycoside hydrolase 134 domain at the N- and C-terminal regions, respectively. Recombinant SsGH134 expressed in E. coli. SsGH134 was maximally active within a pH range of 4.0-6.5 and retained >80% of this maximum after 90 min at 30°C within a pH range of 3.0-10.0. The β-1,4-mannanase activity of SsGH134 towards glucomannan was 30% of the maximal activity after an incubation at 100°C for 120 min, indicating that SsGH134 is pH-tolerant and thermostable β-1,4-mannanase...
November 16, 2017: Journal of Bioscience and Bioengineering
https://www.readbyqxmd.com/read/29152948/exogenous-erythropoietin-aggravates-retinal-neovascularizationin-a-murine-model-of-proliferative-retinopathy
#13
Ning Yang, Wenxi Zhang, Tao He, Yiqiao Xing
Background/aim: Erythropoietin (EPO) has been proven recently to be a critical mediator in retinal neovascularization (RNV). Previous studies have indicated that the use of recombinant human EPO (rEPO) is a high risk factor in the development of retinopathy of prematurity. In this study, we aimed to investigate the effect of rEPO administration on RNV and its underlying mechanism in a mouse model of oxygen-induced retinopathy (OIR). Materials and methods: A murine model of OIR was used to generate RNV. After daily intraperitoneal injection of rEPO from postnatal day 12 (P12), mice were euthanized at P17...
November 13, 2017: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/29152579/streptococcus-pneumoniae-tigr4-phase-locked-opacity-variants-differ-in-virulence-phenotypes
#14
Melissa B Oliver, Ankita Basu Roy, Ranjit Kumar, Elliot J Lefkowitz, W Edward Swords
Streptococcus pneumoniae (pneumococcus) is a leading human pathogen that can cause serious localized and invasive diseases. Pneumococci can undergo a spontaneous and reversible phase variation that is reflected in colony opacity and which allows the population to adapt to different host environments. Generally, transparent variants are adapted for nasopharyngeal colonization, whereas opaque variants are associated with invasive disease. In recent work, colony phase variation was shown to occur by means of recombination events to generate multiple alleles of the hsdS targeting domain of a DNA methylase complex, which mediates epigenetic changes in gene expression...
November 2017: MSphere
https://www.readbyqxmd.com/read/29152576/meningococcal-antigen-typing-system-mats-based-neisseria-meningitidis-serogroup-b-coverage-prediction-for-the-menb-4c-vaccine-in-the-united-states
#15
Gowrisankar Rajam, Maria Stella, Ellie Kim, Simon Paulos, Giuseppe Boccadifuoco, Laura Serino, George Carlone, Duccio Medini
Neisseria meningitidis is the most common cause of bacterial meningitis in children and young adults worldwide. A 4-component vaccine against N. meningitidis serogroup B (MenB) disease (MenB-4C [Bexsero]; GSK) combining factor H binding protein (fHBP), neisserial heparin binding protein (NHBA), neisserial adhesin A (NadA), and PorA-containing outer membrane vesicles was recently approved for use in the United States and other countries worldwide. Because the public health impact of MenB-4C in the United States is unclear, we used the meningococcal antigen typing system (MATS) to assess the strain coverage in a panel of strains representative of serogroup B (NmB) disease in the United States...
November 2017: MSphere
https://www.readbyqxmd.com/read/29152418/generation-and-characterization-of-cross-neutralizing-human-monoclonal-antibody-against-4-serotypes-of-dengue-virus-without-enhancing-activity
#16
Subenya Injampa, Nataya Muenngern, Chonlatip Pipattanaboon, Surachet Benjathummarak, Khwanchit Boonha, Hathairad Hananantachai, Waranya Wongwit, Pongrama Ramasoota, Pannamthip Pitaksajjakul
Background: Dengue disease is a leading cause of illness and death in the tropics and subtropics. Most severe cases occur among patients secondarily infected with a different dengue virus (DENV) serotype compared with that from the first infection, resulting in antibody-dependent enhancement activity (ADE). Our previous study generated the neutralizing human monoclonal antibody, D23-1B3B9 (B3B9), targeting the first domain II of E protein, which showed strong neutralizing activity (NT) against all four DENV serotypes...
2017: PeerJ
https://www.readbyqxmd.com/read/29152082/panbinostat-decreases-cflip-and-enhances-killing-of-cancer-cells-by-immunotoxin-lmb-100-by-stimulating-the-extrinsic-apoptotic-pathway
#17
Xiu-Fen Liu, Qi Zhou, Raffit Hassan, Ira Pastan
LMB-100 (RG7787) is a recombinant immunotoxin, which kills mesothelin-expressing cancer cells and now being evaluated in phase 1 trials. To enhance the anti-tumor activity of LMB-100, we have searched for agents, already approved for cancer therapy, that can be combined with LMB-100 to increase its efficacy. Panbinostat is a pan-histone deacetylase inhibitor that is used to treat multiple myeloma. We incubated different types of cancer cells with panbinostat and LMB-100 and found that they interacted synergistically to cause cell death...
October 20, 2017: Oncotarget
https://www.readbyqxmd.com/read/29152062/rapamycin-sensitizes-cancer-cells-to-growth-inhibition-by-the-parp-inhibitor-olaparib
#18
Atsushi Osoegawa, Joell J Gills, Shigeru Kawabata, Phillip A Dennis
Poly (ADP-ribose) polymerase inhibitors (PARPi) have been developed and tested in a context of combining it with double-stranded (ds) DNA repair defects or inhibitors, as PARP inhibitor impairs single-stranded (ss) DNA break repair, resulting in the activation of the dsDNA break repair machinery. Rapamycin has been widely prescribed for more than a decade and recent studies have revealed that it may inhibit dsDNA break repair. The combination of the PARP inhibitor olaparib and rapamycin synergistically inhibited cell proliferation in non-small cell lung cancer (NSCLC) cells, and even in triple negative breast cancer (TNBC) cells with BRCA1 mutations...
October 20, 2017: Oncotarget
https://www.readbyqxmd.com/read/29150838/gi-530159-a-novel-selective-mechano-sensitive-k2p-channel-opener-reduces-rat-dorsal-root-ganglion-drg-neuron-excitability
#19
Alexandre J C Loucif, Pierre-Philippe Saintot, Jia Liu, Brett M Antonio, Shannon G Zellmer, Katrina Yoger, Emma L Veale, Anna Wilbrey, Kiyoyuki Omoto, Lishuang Cao, Alex Gutteridge, Neil A Castle, Edward B Stevens, Alistair Mathie
BACKGROUND AND PURPOSE: TREK two pore domain potassium channels play a critical role in regulating the excitability of somatosensory nociceptive neurons and are important mediators of pain perception. An understanding of the roles of TREK channels in pain perception and, indeed, in other pathophysiological conditions, has been severely hampered by the lack of potent and/or selective activators and inhibitors. In this study we describe a new, selective opener of TREK channels, GI-530159 (4,4'-(Hexafluoroisopropylidene)bis(p-phenyleneoxy)dianiline)...
November 18, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/29150773/overexpression-of-a-cellobiose-glucose-halotolerant-endoglucanase-from-scytalidium-thermophilum
#20
Luana Parras Meleiro, Sibeli Carli, Raquel Fonseca-Maldonado, Marcela da Silva Torricillas, Ana Lucia Ribeiro Latorre Zimbardi, Richard John Ward, João Atílio Jorge, Rosa Prazeres Melo Furriel
Enzyme reaction products and by-products from pretreatment steps can inhibit endoglucanases and are major factors limiting the efficiency of enzymatic lignocellulosic biomass hydrolysis. The gene encoding the endoglucanase from Scytalidium thermophilum (egst) was cloned and expressed as a soluble protein in Pichia pastoris GS115. The recombinant enzyme (Egst) was monomeric (66 kDa) and showed an estimated carbohydrate content of 53.3% (w/w). The optimum temperature and pH of catalysis were 60-70 °C and pH of 5...
November 18, 2017: Applied Biochemistry and Biotechnology
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