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https://www.readbyqxmd.com/read/28436934/biopolymers-codelivering-engineered-t-cells-and-sting-agonists-can-eliminate-heterogeneous-tumors
#1
Tyrel T Smith, Howell F Moffett, Sirkka B Stephan, Cary F Opel, Amy G Dumigan, Xiuyun Jiang, Venu G Pillarisetty, Smitha P S Pillai, K Dane Wittrup, Matthias T Stephan
Therapies using T cells that are programmed to express chimeric antigen receptors (CAR T cells) consistently produce positive results in patients with hematologic malignancies. However, CAR T cell treatments are less effective in solid tumors for several reasons. First, lymphocytes do not efficiently target CAR T cells; second, solid tumors create an immunosuppressive microenvironment that inactivates T cell responses; and third, solid cancers are typified by phenotypic diversity and thus include cells that do not express proteins targeted by the engineered receptors, enabling the formation of escape variants that elude CAR T cell targeting...
April 24, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28436883/a-bipartite-network-and-resource-transfer-based-approach-to-infer-lncrna-environmental-factor-associations
#2
Jie Zhou, Yuan-Yuan Shi
Phenotypes and diseases are often determined by the complex interactions between genetic factors and environmental factors (EFs). However, compared with protein-coding genes and microRNAs, there is a paucity of computational methods for understanding the associations between long non-coding RNAs (lncRNAs) and EFs. In this study, we focused on the associations between lncRNA and EFs. By using the common miRNA partners of any pair of lncRNA and EF, based on the competing endogenous RNA (ceRNA) hypothesis and the technique of resources transfer within the experimentally-supported lncRNA-miRNA and miRNA-EF association bipartite networks, we propose an algorithm for predicting new lncRNA-EF associations...
April 18, 2017: IEEE/ACM Transactions on Computational Biology and Bioinformatics
https://www.readbyqxmd.com/read/28436759/the-roles-of-micrornas-in-spinal-cord-injury
#3
Zhongju Shi, Hengxing Zhou, Lu Lu, Xueying Li, Zheng Fu, Jun Liu, Yi Kang, Zhijian Wei, Bin Pan, Lu Liu, Xiaohong Kong, Shiqing Feng
BACKGROUND AND PURPOSE: Spinal cord injury (SCI) involves serious damage that can result in abnormal or absent motor and sensory functions and a disruption of autonomic function, and a series of pathological reactions occur after the injury. As a type of small non-coding RNA, microRNAs (miRNAs) have been verified to inhibit gene expression via posttranscriptional regulation. This review mainly focuses on recent advances regarding the roles of miRNAs following SCI. METHODS: The Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines were adopted...
April 24, 2017: International Journal of Neuroscience
https://www.readbyqxmd.com/read/28436748/disruption-of-tetr-type-regulator-aden-by-mobile-genetic-element-confers-elevated-virulence-in-acinetobacter-baumannii
#4
Rajagopalan Saranathan, Sudhakar Pagal, Ajit R Sawant, Archana Tomar, M Madhangi, Suresh Sah, Annapurna Satti, K P Arunkumar, K Prashanth
Acinetobacter baumannii is an important human pathogen and considered as a major threat due to its extreme drug resistance. In this study, the genome of a hyper-virulent MDR strain PKAB07 of A. baumannii isolated from an Indian patient was sequenced and analysed to understand its mechanisms of virulence, resistance and evolution. Comparative genomics analysis of PKAB07 revealed virulence and resistance related genes scattered throughout the genome, instead of being organized as an island, indicating the highly mosaic nature of the genome...
April 24, 2017: Virulence
https://www.readbyqxmd.com/read/28435889/multidrug-resistance-salmonella-genomic-island-1-in-a-morganella-morganii-subsp-morganii-human-clinical-isolate-from-france
#5
Eliette Schultz, Olivier Barraud, Jean-Yves Madec, Marisa Haenni, Axel Cloeckaert, Marie-Cécile Ploy, Benoît Doublet
Salmonella genomic island 1 (SGI1) is a multidrug resistance integrative mobilizable element that harbors a great diversity of antimicrobial resistance gene clusters described in numerous Salmonella enterica serovars and also in Proteus mirabilis. A serious threat to public health was revealed in the recent description in P. mirabilis of a SGI1-derivative multidrug resistance island named PGI1 (Proteus genomic island 1) carrying extended-spectrum-β-lactamase (ESBL) and metallo-β-lactamase resistance genes, blaVEB-6 and blaNDM-1, respectively...
March 2017: MSphere
https://www.readbyqxmd.com/read/28435133/de-novo-comparative-transcriptome-analysis-of-genes-involved-in-fruit-morphology-of-pumpkin-cultivars-with-extreme-size-difference-and-development-of-est-ssr-markers
#6
Aliki Xanthopoulou, Ioannis Ganopoulos, Fotis Psomopoulos, Maria Manioudaki, Theodoros Moysiadis, Aliki Kapazoglou, Maslin Osathanunkul, Sofia Michailidou, Apostolos Kalivas, Athanasios Tsaftaris, Irini Nianiou-Obeidat, Panagiotis Madesis
The genetic basis of fruit size and shape was investigated for the first time in Cucurbita species and genetic loci associated with fruit morphology have been identified. Although extensive genomic resources are available at present for tomato (Solanum lycopersicum), cucumber (Cucumis sativus), melon (Cucumis melo) and watermelon (Citrullus lanatus), genomic databases for Cucurbita species are limited. Recently, our group reported the generation of pumpkin (Cucurbita pepo) transcriptome databases from two contrasting cultivars with extreme fruit sizes...
April 20, 2017: Gene
https://www.readbyqxmd.com/read/28435087/the-complete-mitochondrial-genome-of-clostera-anachoreta-lepidoptera-notodontidae-and-phylogenetic-implications-for-noctuoidea-species
#7
Xiao-Yu Zhu, Zhao-Zhe Xin, Ying Wang, Hua-Bin Zhang, Dai-Zhen Zhang, Zheng-Fei Wang, Chun-Lin Zhou, Bo-Ping Tang, Qiu-Ning Liu
In this study, the complete mitochondrial genome (mitogenome) of Clostera anachoreta (Lepidoptera: Notodontidae) was sequenced. It comprises 15,456 base pairs (bp), including 13 protein-coding genes (PCGs), two ribosomal RNAs (rRNA), 22 transfer RNAs (tRNA) and one non-coding control region (CR), as found in other lepidopterans. Gene order is identical to that of typical lepidopterans. There are 15 intergenic spacers ranging from 1 to 49bp, and 9 overlapping regions ranging from 1 to 8bp, occurring throughout the genome...
April 20, 2017: Genomics
https://www.readbyqxmd.com/read/28435006/horizontal-transfer-of-chromosomal-markers-mediated-by-the-large-conjugative-plasmid-pxo16-from-bacillus-thuringiensis-serovar-israelensis
#8
Lionel Makart, Florian Commans, Annika Gillis, Jacques Mahillon
pXO16, a large plasmid originating from Bacillus thuringiensis serovar israelensis, displays unique conjugation capacities: besides efficient self-transfer, it is able to mobilize and retro-mobilize non-conjugative plasmids, including those missing an oriT and/or a mob gene, also known as "non-mobilizable" plasmids. In this paper, another peculiar transfer property of pXO16 is described. This element is indeed able to transfer chromosomal loci at frequencies of ca. 10(-5)-10(-6) transconjugants/donor cell. Whereas most other chromosomal transfer systems occur via the integration of the conjugative elements into the chromosome prior to its transfer, pXO16 appears to transfer the chromosomal markers in the absence of physical integration, but rather through a "donation-type" mobilization...
April 20, 2017: Plasmid
https://www.readbyqxmd.com/read/28434979/synergistic-effects-of-bmp-2-bmp-6-or-bmp-7-with-human-plasma-fibronectin-onto-hydroxyapatite-coatings-a-comparative-study
#9
Isabelle Brigaud, Rémy Agniel, Johanne Leroy Dudal, Sabrina Kellouche, Arnaud Ponche, Tahar Bouceba, Natalia Mihailescu, Mihai Sopronyi, Eric Viguier, Carmen Ristoscu, Felix Sima, Ion N Mihailescu, Ana Claudia O Carreira, Mari Cleide Sogayar, Olivier Gallet, Karine Anselme
Design of new osteoinductive biomaterials to reproduce an optimized physiological environment capable of recruiting stem cells and instructing their fate towards the osteoblastic lineage has become a priority in orthopedic surgery. This work aims at evaluating the bioactivity of BMP combined with human plasma fibronectin (FN/BMP) delivered in solution or coated onto titanium-hydroxyapatite (TiHA) surfaces. Herein, we focus on the comparison of in vitro osteogenic efficacy in mouse C2C12 pre-osteoblasts of three BMP members, namely: BMP-2, BMP-6 and BMP-7...
April 18, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28434868/hif-1%C3%AE-dependent-wound-healing-angiogenesis-in%C3%A2-vivo-can-be-controlled-by-site-specific-lentiviral-magnetic-targeting-of-shp-2
#10
Yvonn Heun, Kristin Pogoda, Martina Anton, Joachim Pircher, Alexander Pfeifer, Markus Woernle, Andrea Ribeiro, Petra Kameritsch, Olga Mykhaylyk, Christian Plank, Florian Kroetz, Ulrich Pohl, Hanna Mannell
Hypoxia promotes vascularization by stabilization and activation of the hypoxia inducible factor 1α (HIF-1α), which constitutes a target for angiogenic gene therapy. However, gene therapy is hampered by low gene delivery efficiency and non-specific side effects. Here, we developed a gene transfer technique based on magnetic targeting of magnetic nanoparticle-lentivirus (MNP-LV) complexes allowing site-directed gene delivery to individual wounds in the dorsal skin of mice. Using this technique, we were able to control HIF-1α dependent wound healing angiogenesis in vivo via site-specific modulation of the tyrosine phosphatase activity of SHP-2...
April 20, 2017: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/28433921/a-contribution-to-the-phylogeny-of-agglutinating-arcellinida-amoebozoa-based-on-ssu-rrna-gene-sequences
#11
Fatma Gomaa, Daniel J G Lahr, Milcho Todorov, Jingchun Li, Enrique Lara
Arcellinid testate amoebae include a wide variety of amoeboid organisms whose test (shell) varies in shape, composition and size. A decade ago, we initiated molecular phylogenetic analyses based on SSU rRNA gene sequences and a taxonomic revision of Arcellinida. However, many lineages within Arcellinida still lack molecular data, and the phylogeny of this group is largely incomplete. In this study, we obtained SSU rRNA gene sequences from seven taxa, of which six have agglutinated shell (Difflugia oblonga, D...
April 3, 2017: European Journal of Protistology
https://www.readbyqxmd.com/read/28433573/rodents-as-a-reservoir-of-infection-caused-by-multiple-zoonotic-species-genotypes-of-c-parvum-c-hominis-c-suis-c-scrofarum-and-the-first-evidence-of-c-muskrat-genotypes-i-and-ii-of-rodents-in-europe
#12
REVIEW
Oľga Danišová, Alexandra Valenčáková, Michal Stanko, Lenka Luptáková, Elena Hatalová, Alexander Čanády
Cryptosporidium spp. is an important causative agent of intestinal parasitoses-induced diarrhoea in humans and animals worldwide. Rodents (small mammals), the main reservoir of infections, are globally expanded and overpopulated, which increases the risk of transfer of human and zoonotic pathogens from the genus Cryptosporidium. In this study, Cryptosporidium was detected in wild immunocompetent asymptomatic small mammals. Altogether 262 faecal samples were collected from five areas in eastern Slovakia from four different rodent species (Myodes glareolus, Apodemus agrarius, Apodemus flavicollis, Rattus norvegicus), eight samples originated from two insectivore species (Sorex araneus, Crocidura suaveolens) and two sample from a carnivore Mustela nivalis...
April 19, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28433572/descriptions-of-the-female-and-larva-of-simulium-gomphostilbia-udomi-diptera-simuliidae-from-thailand-and-its-transfer-to-the-simulium-asakoae-species-group
#13
Atiporn Saeung, Wichai Srisuka, Van Lun Low, Wanchai Maleewong, Hiroyuki Takaoka
The female and larva of Simulium (Gomphostilbia) udomi Takaoka & Choochote from Thailand are described for the first time. The female of this species is similar to those of S. (G.) asakoae Takaoka & Davies from Peninsular Malaysia, Thailand, Hong Kong and Vietnam, and S. (G.) chiangdaoense Takaoka & Srisuka from Thailand. The larva of this species is similar to S. (G.) curtatum Jitklang et al. and S. (G.) nr. asakoae 2 from Thailand in having a medium-long postgenal cleft. Taxonomic notes are given to separate this species from these related species...
April 19, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28433562/characterization-of-the-complete-mitochondrial-genome-of-khawia-sinensis-belongs-among-platyhelminths-cestodes
#14
Yan Feng, Han-Li Feng, Yi-Hui Fang, Ying-Bing Su
Khawia sinensis is an important species in freshwater fish causing considerable economic losses to the breeding industry. This is the first mt genome of a caryophyllidean cestode characterised. The entire mt genome of K. sinensis is 13,759 bp in length. This mt genome contains 12 protein-coding genes, 22 transfer RNA genes, two ribosomal RNA genes and two non-coding regions. The arrangement of the K. sinensis mt genome is the same as other tapeworms, however, the incomplete stop codon (A) is more frequent that other species...
April 20, 2017: Experimental Parasitology
https://www.readbyqxmd.com/read/28433476/patient-with-multiple-acyl-coa-dehydrogenation-deficiency-disease-and-flad1-mutations-benefits-from-riboflavin-therapy
#15
M Auranen, A Paetau, P Piirilä, A Pohju, T Salmi, A Lamminen, M Löfberg, S Mosegaard, R K Olsen, T Tyni
Multiple acyl-CoA dehydrogenation deficiency is genetically heterogenous metabolic disease with mutations in genes involved in electron transfer to the mitochondrial respiratory chain. Disease symptoms vary from severe neonatal form to late-onset presentation with metabolic acidosis, lethargy, vomiting, muscle pain and weakness. Riboflavin therapy has been shown to ameliorate diseases symptoms in some of these patients. Recently, mutations in FAD synthase have been described to cause multiple acyl-CoA dehydrogenation deficiency...
March 9, 2017: Neuromuscular Disorders: NMD
https://www.readbyqxmd.com/read/28432097/diazotrophy-overcomes-the-deleterious-growth-phenotype-of-glne-deletion-in-azotobacter-vinelandii
#16
Florence Mus, Alex Tseng, Ray Dixon, John W Peters
Overcoming the inhibitory effects of excess environmental ammonium on nitrogenase synthesis or activity, or preventing ammonium assimilation, have both been considered as strategies to increase the amount of fixed nitrogen transferred from bacterial to plant partners in associative or symbiotic plant-diazotroph relationships. The GlnE adenylyltransferase/adenylyl-removing enzyme catalyzes reversible adenylylation of glutamine synthetase (GS), thereby affecting the post translational regulation of ammonium assimilation critical for appropriate coordination of carbon and nitrogen assimilation...
April 21, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28432094/the-use-of-synthetic-hybrid-strains-to-determine-the-role-of-replicon-3-in-virulence-of-the-burkholderia-cepacia-complex
#17
Kirsty Agnoli, Roman Freitag, Margarida C Gomes, Christian Jenul, Angela Suppiger, Olga Mannweiler, Carmen Frauenknecht, Daniel Janser, Annette C Vergunst, Leo Eberl
The Burkholderia cepacia complex (Bcc) displays a wealth of metabolic diversity with great biotechnological potential, but the utilisation of these bacteria is limited by their opportunistic pathogenicity to humans. The third replicon of the Bcc, megaplasmid pC3 (0.5 to 1.4 Mb, previously chromosome 3), is important for various phenotypes, including virulence, antifungal and proteolytic activities, and the utilization of certain substrates. Approximately half of plasmid pC3 is well-conserved throughout sequenced Bcc members, while the other half is not...
April 21, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28432093/diversity-of-integrative-and-conjugative-elements-of-streptococcus-salivarius-and-their-intra-and-interspecies-transfer
#18
Narimane Dahmane, Virginie Libante, Florence Charron-Bourgoin, Eric Guédon, Gérard Guédon, Nathalie Leblond-Bourget, Sophie Payot
Integrative and Conjugative Elements (ICEs) are widespread chromosomal mobile genetic elements, which can transfer autonomously by conjugation in bacteria. Thirteen ICEs with a conjugation module closely related to that of ICESt3 of Streptococcus thermophilus were characterized in Streptococcus salivarius by whole genome sequencing. Sequence comparison highlighted ICE evolution by shuffling of 3 different integration/excision modules (for integration in the 3' end of fda, rpsI or rpmG genes) with the conjugation module of the ICESt3 subfamily...
April 21, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28431352/degradation-of-sulfamethoxazole-by-uv-uv-h2o2-and-uv-persulfate-pds-formation-of-oxidation-products-and-effect-of-bicarbonate
#19
Yi Yang, Xinglin Lu, Jin Jiang, Jun Ma, Guanqi Liu, Ying Cao, Weili Liu, Juan Li, Suyan Pang, Xiujuan Kong, Congwei Luo
The frequent detection of sulfamethoxazole (SMX) in wastewater and surface waters gives rise of concerns about their ecotoxicological effects and potential risks to induce antibacterial resistant genes. UV/hydrogen peroxide (UV/H2O2) and UV/persulfate (UV/PDS) advanced oxidation processes have been demonstrated to be effective for the elimination of SMX, but there is still a need for a deeper understanding of product formations. In this study, we identified and compared the transformation products of SMX in UV, UV/H2O2 and UV/PDS processes...
March 28, 2017: Water Research
https://www.readbyqxmd.com/read/28431082/compositional-differences-among-female-associated-and-embryo-associated-microbiota-of-the-viviparous-pacific-beetle-cockroach-diploptera-punctata
#20
Paul A Ayayee, George Keeney, Zakee L Sabree, Agustí Muñoz-Garcia
All cockroach species, except one, harbor the endosymbiont Blattabacterium, transmitted from females to embryos. Adult cockroaches acquire non-Blattabacterium bacteria as part of their gut microbiota over time, but our knowledge of the possible transmission of these non-Blattabacterium bacteria from females to embryos is rudimentary. We characterized the gut microbiota of gravid viviparous Diploptera punctata females and the non-Blattabacterium microbiota of associated developing embryos, as well as the gut microbiota of non-gravid females, and the microbiota of orphan embryos (females not included), following high-throughput sequencing of the 16S rRNA gene to assess bacterial transference...
April 18, 2017: FEMS Microbiology Ecology
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