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https://www.readbyqxmd.com/read/28634719/a-sugarcane-pathogenesis-related-protein-scpr10-plays-a-positive-role-in-defense-responses-under-sporisorium-scitamineum-srmv-sa-and-meja-stresses
#1
Qiong Peng, Yachun Su, Hui Ling, Waqar Ahmad, Shiwu Gao, Jinlong Guo, Youxiong Que, Liping Xu
A pathogenesis-related gene, ScPR10 , was isolated from sugarcane and its bio-function was characterized, demonstrating that ScPR10 was involved in plant defense responses to Sporisorium scitamineum , SrMV, SA, and MeJA stresses. Plant fungal and viral diseases are the major concerns in sugarcane industry. Many anti-fungal and antivirus components, including pathogenesis-related (PR) proteins, have been identified. The pathogenesis-related protein 10 (PR10) is the dominant group in PR families, involved in the plant defense mechanism...
June 20, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28571917/targeting-mir-21-with-sophocarpine-inhibits-tumor-progression-and-reverses-epithelial-mesenchymal-transition-in-head-and-neck-cancer
#2
Wei Liu, Beilei Zhang, Guo Chen, Wenjiao Wu, Lin Zhou, Yaru Shi, Qi Zeng, Yanqiu Li, Youwei Sun, Xingming Deng, Fu Wang
A major challenge for cancer chemotherapy is the development of safe and clinically effective chemotherapeutic agents. With its low toxicity profile, sophocarpine (SC), a naturally occurring tetracyclic quinolizidine alkaloid derived from Sophora alopecuroides L, has shown promising therapeutic properties, including anti-inflammatory, anti-nociceptive, and antivirus activities. However, the antitumor efficacy of SC and its underlying mechanisms have not been completely delineated. In the present study, the inhibitory effect of SC on head and neck squamous cell carcinoma (HNSCC) progression and possible mechanisms for this effect involving microRNA-21 (miR-21) regulation were investigated...
May 29, 2017: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/28545555/the-complex-domain-architecture-of-samd9-family-proteins-predicted-stand-like-ntpases-suggests-new-links-to-inflammation-and-apoptosis
#3
Sergei L Mekhedov, Kira S Makarova, Eugene V Koonin
We report a comprehensive computational dissection of the domain architecture of the SAMD9 family proteins that are involved in antivirus and antitumor response in humans. We show that the SAMD9 protein family is represented in most animals and also, unexpectedly, in bacteria, in particular actinomycetes. From the N to C terminus, the core SAMD9 family architecture includes DNA/RNA-binding AlbA domain, a variant Sir2-like domain, a STAND-like P-loop NTPase, an array of TPR repeats and an OB-fold domain with predicted RNA-binding properties...
May 25, 2017: Biology Direct
https://www.readbyqxmd.com/read/28542360/evaluating-the-effects-of-common-control-measures-for-influenza-a-h1n1-outbreak-at-school-in-china-a-modeling-study
#4
Tianmu Chen, Yuanxiu Huang, Ruchun Liu, Zhi Xie, Shuilian Chen, Guoqing Hu
BACKGROUND: Influenza A (H1N1) outbreaks have become common at schools in China since 2009. However, the effects of common countermeasures for school influenza outbreak have not been quantified so far, including isolation, vaccination, antivirus and school closure. We conducted a mathematically modeling study to address this unsolved issue. METHODS: We collected data of all small-scale school outbreaks caused by influenza A that occurred in Changsha city between January 2009 and December 2013...
2017: PloS One
https://www.readbyqxmd.com/read/28539068/ethanol-extract-and-chromatographic-fractions-of-tamarindus-indica-stem-bark-inhibits-newcastle-disease-virus-replication
#5
Omobola O Okoh, Grace E Obiiyeke, Uchechukwu U Nwodo, Anthony I Okoh
CONTEXT: The plethora of ethnomedicinal applications of Tamarindus indica Linn. (Leguminosae), tamarind, includes treatment of human and livestock ailments; preparations are recognized antipyretics in fevers, laxatives and carminatives. African folklore has various applications of tamarind. However, in Nyasaland, domestic fowl are fed with preparations for prophylactic properties. OBJECTIVES: The objective of this study is to evaluate the antiviral properties of T...
December 2017: Pharmaceutical Biology
https://www.readbyqxmd.com/read/28488371/biosynthesis-of-oligopeptides-using-atp-grasp-enzymes
#6
Yasushi Ogasawara, Tohru Dairi
Peptides are biologically occurring oligomers of amino acids linked by amide bonds and are indispensable for all living organisms. Many bioactive peptides are used as antibiotics, antivirus agents, insecticides, pheromones, and food preservatives. Nature employs several different strategies to form amide bonds. ATP-grasp enzymes that catalyze amide bond formation (ATP-dependent carboxylate-amine ligases) utilize a strategy of activating carboxylic acid as an acylphosphate intermediate to form amide bonds and are involved in many different biological processes in both primary and secondary metabolisms...
May 9, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28445479/in-vitro-and-in-vivo-antivirus-activity-of-an-anti-programmed-death-ligand-1-pd-l1-rat-bovine-chimeric-antibody-against-bovine-leukemia-virus-infection
#7
Asami Nishimori, Satoru Konnai, Tomohiro Okagawa, Naoya Maekawa, Ryoyo Ikebuchi, Shinya Goto, Yamato Sajiki, Yasuhiko Suzuki, Junko Kohara, Satoshi Ogasawara, Yukinari Kato, Shiro Murata, Kazuhiko Ohashi
Programmed death-1 (PD-1), an immunoinhibitory receptor on T cells, is known to be involved in immune evasion through its binding to PD-ligand 1 (PD-L1) in many chronic diseases. We previously found that PD-L1 expression was upregulated in cattle infected with bovine leukemia virus (BLV) and that an antibody that blocked the PD-1/PD-L1 interaction reactivated T-cell function in vitro. Therefore, this study assessed its antivirus activities in vivo. First, we inoculated the anti-bovine PD-L1 rat monoclonal antibody 4G12 into a BLV-infected cow...
2017: PloS One
https://www.readbyqxmd.com/read/28440732/expression-of-microrna-let-7a-positively-correlates-with-hepatitis-b-virus-replication-in-hepatocellular-carcinoma-tissues
#8
Dongni Qiu, Jian Chen, Jie Liu, Zhongguang Luo, Weiru Jiang, Jianping Huang, Zhibing Qiu, Wenjie Yue, Lijun Wu
Let-7a miRNA is downregulated in various cancers. However, in hepatocellular carcinoma (HCC) patients infected with hepatitis B virus (HBV), the relationship between let-7a and HBV replication has not been fully elucidated. Liver specimens were collected from 23 HCC patients with chronically active HBV. The serum levels of the HBV antigens hepatitis B surface antigen (HBsAg) and hepatitis B virus e antigen (HBeAg), and the HBV antibodies, anti-HBs, anti-HBe and anti-hepatitis B core antigen (anti-HBc) were measured using the microparticle enzyme immunoassay...
May 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28428715/impact-of-interferon-free-antivirus-therapy-on-lipid-profiles-in-patients-with-chronic-hepatitis-c-genotype-1b
#9
Daisuke Endo, Kenichi Satoh, Noritomo Shimada, Atsushi Hokari, Yoshio Aizawa
AIM: To investigate the influence of interferon-free antivirus therapy on lipid profiles in chronic hepatitis C virus genotype 1b (HCV1b) infection. METHODS: Interferon-free antiviral agents were used to treat 276 patients with chronic HCV1b infection, and changes in serum lipids of those who achieved sustained virologic response (SVR) were examined. The treatment regimen included 24 wk of daclatasvir plus asunaprevir (DCV + ASV) or 12 wk of sofosbuvir plus ledipasvir (SOF + LDV)...
April 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28417913/comparative-study-on-the-antivirus-activity-of-shuang-huang-lian-injectable-powder-and-its-bioactive-compound-mixture-against-human-adenovirus-iii-in-vitro
#10
Qinhai Ma, Dedong Liang, Shuai Song, Qintian Yu, Chunyu Shi, Xuefeng Xing, Jia-Bo Luo
Shuang-Huang-Lian injectable powder (SHL)-a classical purified herbal preparation extracted from Scutellaria baicalensis, Lonicera japonica, and Forsythia suspense-has been used against human adenovirus III (HAdV₃) for many years. The combination herb and its major bioactive compounds, including chlorogenic acid, baicalin, and forsythia glycosides A, are effective inhibitors of the virus. However, no comprehensive studies are available on the antiviral effects of SHL against HAdV₃. Moreover, it remains unclear whether the mixture of chlorogenic acid, baicalin, and forsythia glycosides A (CBF) has enhanced antiviral activity compared with SHL...
April 12, 2017: Viruses
https://www.readbyqxmd.com/read/28395583/isolation-and-identification-of-compounds-from-kalanchoe-pinnata-having-human-alphaherpesvirus-and-vaccinia-virus-antiviral-activity
#11
Matthew Cryer, Kyle Lane, Mary Greer, Rex Cates, Scott Burt, Merritt Andrus, Jiping Zou, Paul Rogers, Marc D H Hansen, Jillybeth Burgado, Subbian Satheshkumar Panayampalli, Craig W Day, Donald F Smee, Brent F Johnson
CONTEXT: Kalanchoe pinnata (Lam.) Pers. (Crassulaceae) is a succulent plant that is known for its traditional antivirus and antibacterial usage. OBJECTIVE: This work examines two compounds identified from the K. pinnata plant for their antivirus activity against human alphaherpesvirus (HHV) 1 and 2 and vaccinia virus (VACV). MATERIALS AND METHODS: Compounds KPB-100 and KPB-200 were isolated using HPLC and were identified using NMR and MS. Both compounds were tested in plaque reduction assay of HHV-2 wild type (WT) and VACV...
December 2017: Pharmaceutical Biology
https://www.readbyqxmd.com/read/28387317/transgenic-mouse-model-for-imaging-of-atf4-translational-activation-related-cellular-stress-responses-in-vivo
#12
Takao Iwawaki, Ryoko Akai, Takae Toyoshima, Naoki Takeda, Tomo-O Ishikawa, Ken-Ichi Yamamura
Activating transcription factor 4 (ATF4) is a translationally activated protein that plays a role in cellular adaptation to several stresses. Because these stresses are associated with various diseases, the translational control of ATF4 needs to be evaluated from the physiological and pathological points of view. We have developed a transgenic mouse model to monitor the translational activation of ATF4 in response to cellular stress. By using this mouse model, we were able to detect nutrient starvation response, antivirus response, endoplasmic reticulum (ER) stress response, and oxidative stress in vitro and ex vivo, as well as in vivo...
April 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28341883/conformational-dynamics-play-important-roles-upon-the-function-of-n-acetylglutamate-kinase
#13
REVIEW
Xiaorong Yang
N-acetylglutamate kinase (NAGK) catalyzes the phosphorylation of N-acetylglutamate. In many bacteria, NAGK catalysis is the rate controlling step in the L-arginine biosynthesis pathway from glutamate to L-arginine and is allosterically inhibited by L-arginine. Many data show that conformational dynamics of NAGKs are essential for their function. The demonstration of the conformational mechanism provides a potential way to improve the yield of arginine. Due to the lack of NAGK catalysis step in arginine synthesis route of mammals, the elucidation of the dynamic mechanism can also provide a way to design a new antivirus drug...
May 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28279792/transcriptome-data-analysis-of-grass-carp-ctenopharyngodon-idella-infected-by-reovirus-provides-insights-into-two-immune-related-genes
#14
Zao Dai, Jicheng Li, Chengyu Hu, Fang Wang, Binhua Wang, Xiao Shi, Qunhao Hou, Waigen Huang, Gang Lin
Grass carp (Ctenopharyngodon idella) was one of the economically important freshwater fish in China. However, hemorrhagic disease caused by grass carp reovirus (GCRV) results in a tremendous loss in the process of grass carp cultivation. Transcriptome analysis could provide a comprehensive understanding of the molecular mechanisms involved in specific biological processes and diseases for the resistance to reovirus infection of grass carp. In this study, the raw data from NCBI (accession number: SRA099702) were analyzed, in which, 50 significant differentially expressed genes by routine transcriptome analysis and 84 notably differentially expressed genes by co-expression network method...
May 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28266101/synthesis-of-azanucleosides-by-anodic-oxidation-in-a-lithium-perchlorate-nitroalkane-medium-and-diversification-at-the-4-nitrogen-position
#15
Takao Shoji, Shokaku Kim, Kazuhiro Chiba
Azanucleosides, in which the 4'-oxygen atom has been replaced with a nitrogen atom, have drawn much attention owing to their anticancer and antivirus activity, and tolerance towards nucleases. However, the traditional synthetic strategy requires multiple steps and harsh conditions, thereby limiting the structural and functional diversity of the products. Herein we describe the synthesis of azanucleosides by an electrochemical reaction in a lithium perchlorate-nitroethane medium, followed by postmodification at the 4'-N position...
March 7, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28237828/the-development-of-hepatocarcinoma-after-long-term-antivirus-treatment-of-chinese-patients-with-chronic-hepatitis-b-virus-infection-incidence-long-term-outcomes-and-predictive-factors
#16
Zhi-Qin Li, Chun-Ling Hu, Ping Yu, Xin-Yu Gu, Jia-Jia Zhang, Hua Li, Hong-Yu Zhang, Jun Lv, Yan-Min Liu, Qing-Lei Zeng, Jing-Ya Yan, Zu-Jiang Yu, Yi Zhang
BACKGROUND: Patients with chronic hepatitis B virus (HBV) infection are at high risk for progressing to decompensated cirrhosis and hepatocellular carcinoma (HCC). Although long-term treatment with nucleos(t)ide analogues (NAs) benefits patients with chronic hepatitis B (CHB), many develop HCC. Therefore, the clinical outcomes of patients CHB who undergo long-term treatment with NAs remain to be identified. The aim of this study therefore was to evaluate the risk and predictors of patients with CHB who develop hepatitis B-induced HCC...
February 22, 2017: Clinics and Research in Hepatology and Gastroenterology
https://www.readbyqxmd.com/read/28212834/death-associated-protein-1-dap-1-positively-regulates-virus-replication-and-apoptosis-of-hemocytes-in-shrimp-marsupenaeus-japonicus
#17
Wen-Li Xia, Li-Hua Kang, Chang-Bin Liu, Cui-Jie Kang
Death-associated protein 1 (DAP1) is a small proline-rich cytoplasmic protein that functions both in the apoptosis and autophage process of mammalian and in the clinical cancer of human. However, little knowledge is known about the homologue gene of DAP1 and its roles in the physiological process of invertebrates. In this paper, we report a novel function of DAP1 in the antivirus immunity of shrimp. A homologue gene of DAP1 was cloned from Marsupenaeus japonicus and named as Mjdap-1. The full-length of Mjdap-1 was 1761 bp with a 309 bp open reading frame that encoded 102 amino acids...
April 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28211536/expression-profiling-of-trim-protein-family-in-thp1-derived-macrophages-following-tlr-stimulation
#18
Mei-Xiu Jiang, Xuan Hong, Bin-Bin Liao, Shui-Zhen Shi, Xiao-Fang Lai, Huai-Yu Zheng, Lin Xie, Yuan Wang, Xiao-Lei Wang, Hong-Bo Xin, Mingui Fu, Ke-Yu Deng
Activated macrophages play an important role in many inflammatory diseases including septic shock and atherosclerosis. However, the molecular mechanisms limiting macrophage activation are not completely understood. Members of the tripartite motif (TRIM) family have recently emerged as important players in innate immunity and antivirus. Here, we systematically analyzed mRNA expressions of representative TRIM molecules in human THP1-derived macrophages activated by different toll-like receptor (TLR) ligands. Twenty-nine TRIM members were highly induced (>3 fold) by one or more TLR ligands, among which 19 of them belong to TRIM C-IV subgroup...
February 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28187792/evolution-of-rna-and-dna-guided-antivirus-defense-systems-in-prokaryotes-and-eukaryotes-common-ancestry-vs-convergence
#19
REVIEW
Eugene V Koonin
Complementarity between nucleic acid molecules is central to biological information transfer processes. Apart from the basal processes of replication, transcription and translation, complementarity is also employed by multiple defense and regulatory systems. All cellular life forms possess defense systems against viruses and mobile genetic elements, and in most of them some of the defense mechanisms involve small guide RNAs or DNAs that recognize parasite genomes and trigger their inactivation. The nucleic acid-guided defense systems include prokaryotic Argonaute (pAgo)-centered innate immunity and CRISPR-Cas adaptive immunity as well as diverse branches of RNA interference (RNAi) in eukaryotes...
February 10, 2017: Biology Direct
https://www.readbyqxmd.com/read/28165366/lychee-seed-saponins-improve-cognitive-function-and-prevent-neuronal-injury-via-inhibiting-neuronal-apoptosis-in-a-rat-model-of-alzheimer-s-disease
#20
Xiuling Wang, Jianming Wu, Chonglin Yu, Yong Tang, Jian Liu, Haixia Chen, Bingjin Jin, Qibing Mei, Shousong Cao, Dalian Qin
Lychee seed is a traditional Chinese medicine and possesses many activities, including hypoglycemia, liver protection, antioxidation, antivirus, and antitumor. However, its effect on neuroprotection is still unclear. The present study investigated the effects of lychee seed saponins (LSS) on neuroprotection and associated mechanisms. We established a rat model of Alzheimer's disease (AD) by injecting Aβ25-35 into the lateral ventricle of rats and evaluated the effect of LSS on spatial learning and memory ability via the Morris water maze...
February 4, 2017: Nutrients
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