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https://www.readbyqxmd.com/read/28635630/development-of-a-high-density-snp-based-linkage-map-and-detection-of-qtl-for-%C3%AE-glucans-protein-content-grain-yield-per-spike-and-heading-time-in-durum-wheat
#1
Ilaria Marcotuli, Agata Gadaleta, Giacomo Mangini, Antonio Massimo Signorile, Silvana Addolorata Zacheo, Antonio Blanco, Rosanna Simeone, Pasqualina Colasuonno
High-density genetic linkage maps of crop species are particularly useful in detecting qualitative and quantitative trait loci for important agronomic traits and in improving the power of classical approaches to identify candidate genes. The aim of this study was to develop a high-density genetic linkage map in a durum wheat recombinant inbred lines population (RIL) derived from two elite wheat cultivars and to identify, characterize and correlate Quantitative Trait Loci (QTL) for β-glucan, protein content, grain yield per spike and heading time...
June 21, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28634692/crispr-cas-orthologues-and-variants-optimizing-the-repertoire-specificity-and-delivery-of-genome-engineering-tools
#2
Alberto Cebrian-Serrano, Benjamin Davies
Robust and cost-effective genome editing in a diverse array of cells and model organisms is now possible thanks to the discovery of the RNA-guided endonucleases of the CRISPR-Cas system. The commonly used Cas9 of Streptococcus pyogenes shows high levels of activity but, depending on the application, has been associated with some shortcomings. Firstly, the enzyme has been shown to cause mutagenesis at genomic sequences resembling the target sequence. Secondly, the stringent requirement for a specific motif adjacent to the selected target site can limit the target range of this enzyme...
June 20, 2017: Mammalian Genome: Official Journal of the International Mammalian Genome Society
https://www.readbyqxmd.com/read/28634479/whole-blood-profiling-of-bacillus-calmette-gu%C3%A3-rin-induced-trained-innate-immunity-in-infants-identifies-epidermal-growth-factor-il-6-platelet-derived-growth-factor-ab-bb-and-natural-killer-cell-activation
#3
Steven G Smith, Johanneke Kleinnijenhuis, Mihai G Netea, Hazel M Dockrell
Vaccination of infants with bacillus Calmette-Guérin (BCG) activates both the innate and adaptive arms of the immune response. The antimycobacterial effects of these responses most likely account for the ability of BCG to protect against childhood forms of tuberculosis (TB). There is also evidence for a heterologous protective effect of BCG vaccination against TB-unrelated mortality in low birth weight infants. A possible mechanism of action of this effect, the induction of trained innate immunity, has been demonstrated when cells from BCG-vaccinated adults are restimulated in vitro with non-related microbial stimuli...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28634413/topical-fibronectin-improves-wound-healing-of-irradiated-skin
#4
Maxwell B Johnson, Brandon Pang, Daniel J Gardner, Solmaz Niknam-Benia, Vinaya Soundarajan, Athanasios Bramos, David P Perrault, Kian Banks, Gene K Lee, Regina Y Baker, Gene H Kim, Sunju Lee, Yang Chai, Mei Chen, Wei Li, Lawrence Kwong, Young-Kwon Hong, Alex K Wong
Wound healing is significantly delayed in irradiated skin. To better understand global changes in protein expression after radiation, we utilized a reverse phase protein array (RPPA) to identify significant changes in paired samples of normal and irradiated human skin. Of the 210 proteins studied, fibronectin was the most significantly and consistently downregulated in radiation-damaged skin. Using a murine model, we confirmed that radiation leads to decreased fibronectin expression in the skin as well as delayed wound healing...
June 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28634235/mechanistic-elucidation-of-the-mycofactocin-biosynthetic-radical-s-adenosylmethionine-protein-mftc
#5
Bulat Khaliullin, Richard Ayikpoe, Mason Tuttle, John A Latham
Ribosomally synthesized and posttranslationally modified peptide (RiPP) pathways produce a diverse array of natural products. A subset of these pathways depend on radical S-adenosylmethionine (RS) proteins to modify the RiPP-produced peptide. Mycofactocin biosynthesis is one example of an RS protein-dependent RiPP pathway. Recently, it has been shown that MftC catalyzes the oxidative decarboxylation of the C-terminal tyrosine (Tyr30) on the mycofactocin precursor peptide MftA; however, this product has not been verified by techniques other than MS...
June 20, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28633965/phosphoproteome-analysis-reveals-a-critical-role-for-hedgehog-signalling-in-osteoblast-morphological-transitions
#6
Ariane Marumoto, Renato Milani, Rodrigo A da Silva, Célio Junior da Costa Fernandes, José Mauro Granjeiro, Carmen V Ferreira, Maikel P Peppelenbosch, Willian F Zambuzzi
The reciprocal and adaptive interactions between cells and substrates governing morphological transitions in the osteoblast compartment remain largely obscure. Here we show that osteoblast cultured in basement membrane matrix (Matrigel™) exhibits significant morphological changes after ten days of culture, and we decided to exploit this situation to investigate the molecular mechanisms responsible for guiding osteoblast morphological transitions. As almost all aspects of cellular physiology are under control of kinases, we generated more or less comprehensive cellular kinome profiles employing PepChip peptide arrays that contain over 1000 consensus substrates of kinase peptide...
June 17, 2017: Bone
https://www.readbyqxmd.com/read/28633434/psip1-p75-promotes-tumorigenicity-in-breast-cancer-cells-by-promoting-the-transcription-of-cell-cycle-genes
#7
Deepak K Singh, Omid Gholamalamdari, Mahdieh Jadaliha, Xiao Ling Li, Yo-Chuen Lin, Yang Zhang, Shuomeng Guang, Seyedsasan Hashemikhabir, Saumya Tiwari, Yuelin J Zhu, Abid Khan, Anu Thomas, Arindam Chakraborty, Virgilia Macias, Andre K Balla, Rohit Bhargava, Sarath Chandra Janga, Jian Ma, Supriya G Prasanth, Ashish Lal, Kannanganattu V Prasanth
Breast cancer (BC) is a highly heterogeneous disease, both at the pathological and molecular level, and several chromatin-associated proteins play crucial roles in breast cancer initiation and progression. Here, we demonstrate the role of PSIP1 (PC4 and SF2 interacting protein)/p75 (LEDGF) in breast cancer progression. PSIP1/p75, previously identified as a chromatin-adaptor protein, is found to be upregulated in basal-like/triple negative breast cancer (TNBC) patient samples and cell lines. Immunohistochemistry in tissue arrays showed elevated levels of PSIP1 in metastatic invasive ductal carcinoma...
June 17, 2017: Carcinogenesis
https://www.readbyqxmd.com/read/28632775/unique-cellular-interactions-between-pancreatic-cancer-cells-and-the-omentum
#8
Valerya Feygenzon, Shelly Loewenstein, Nir Lubezky, Metsada Pasmanic-Chor, Osnat Sher, Joseph M Klausner, Guy Lahat
Pancreatic cancer is a common cause of cancer-related mortality. Omental spread is frequent and usually represents an ominous event, leading to patient death. Omental metastasis has been studied in ovarian cancer, but data on its role in pancreatic cancer are relatively scarce and the molecular biology of this process has yet to be explored. We prepared tissue explants from human omental fat, and used conditioned medium from the explants for various in vitro and in vivo experiments designed to evaluate pancreatic cancer development, growth, and survival...
2017: PloS One
https://www.readbyqxmd.com/read/28630934/ligand-binding-to-a-g-protein-coupled-receptor-captured-in-a-mass-spectrometer
#9
Hsin-Yung Yen, Jonathan T S Hopper, Idlir Liko, Timothy M Allison, Ya Zhu, Dejian Wang, Monika Stegmann, Shabaz Mohammed, Beili Wu, Carol V Robinson
G protein (heterotrimeric guanine nucleotide-binding protein)-coupled receptors belong to the largest family of membrane-embedded cell surface proteins and are involved in a diverse array of physiological processes. Despite progress in the mass spectrometry of membrane protein complexes, G protein-coupled receptors have remained intractable because of their low yield and instability after extraction from cell membranes. We established conditions in the mass spectrometer that preserve noncovalent ligand binding to the human purinergic receptor P2Y1...
June 2017: Science Advances
https://www.readbyqxmd.com/read/28630856/chimeric-genes-in-deletions-and-duplications-associated-with-intellectual-disability
#10
Sonia Mayo, Sandra Monfort, Mónica Roselló, Carmen Orellana, Silvestre Oltra, Alfonso Caro-Llopis, Francisco Martínez
We report on three nonrelated patients with intellectual disability and CNVs that give rise to three new chimeric genes. All the genes forming these fusion transcripts may have an important role in central nervous system development and/or in gene expression regulation, and therefore not only their deletion or duplication but also the resulting chimeric gene may contribute to the phenotype of the patients. Deletions and duplications are usually pathogenic when affecting dose-sensitive genes. Alternatively, a chimeric gene may also be pathogenic by different gain-of-function mechanisms that are not restricted to dose-sensitive genes: the emergence of a new polypeptide that combines functional domains from two different genes, the deregulated expression of any coding sequence by the promoter region of a neighboring gene, and/or a putative dominant-negative effect due to the preservation of functional domains of partially truncated proteins...
2017: International Journal of Genomics
https://www.readbyqxmd.com/read/28630422/basic-surface-features-of-nuclear-fkbps-facilitate-chromatin-binding
#11
Andrew Leung, Francy-Pesek Jardim, Neda Savic, Yoan R Monneau, Rodrigo González-Romero, Geoff Gudavicius, Jose M Eirin-Lopez, Till Bartke, Cameron D Mackereth, Juan Ausió, Christopher J Nelson
The nucleoplasmin family of histone chaperones is identified by a pentamer-forming domain and multiple acidic tracts that mediate histone binding and chaperone activity. Within this family, a novel domain organization was recently discovered that consists of an N-terminal nucleoplasmin-like (NPL) domain and a C-terminal FKBP peptidyl-proline isomerase domain. Saccharomyces cerevisiae Fpr4 is one such protein. Here we report that in addition to its known histone prolyl isomerase activities, the Fpr4 FKBP domain binds to nucleosomes and nucleosome arrays in vitro...
June 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28630345/synthesis-of-asymmetrical-multiantennary-human-milk-oligosaccharides
#12
Anthony R Prudden, Lin Liu, Chantelle J Capicciotti, Margreet A Wolfert, Shuo Wang, Zhongwei Gao, Lu Meng, Kelley W Moremen, Geert-Jan Boons
Despite mammalian glycans typically having highly complex asymmetrical multiantennary architectures, chemical and chemoenzymatic synthesis has almost exclusively focused on the preparation of simpler symmetrical structures. This deficiency hampers investigations into the biology of glycan-binding proteins, which in turn complicates the biomedical use of this class of biomolecules. Herein, we describe an enzymatic strategy, using a limited number of human glycosyltransferases, to access a collection of 60 asymmetric, multiantennary human milk oligosaccharides (HMOs), which were used to develop a glycan microarray...
June 19, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28630068/ehrlichia-chaffeensis-trp120-moonlights-as-a-hect-e3-ligase-involved-in-self-and-host-ubiquitination-to-influence-protein-interactions-and-stability-for-intracellular-survival
#13
Bing Zhu, Seema Das, Shubhajit Mitra, Tierra R Farris, Jere W McBride
Ehrlichia chaffeensis secretes tandem repeat protein (TRP) effectors that are involved in a diverse array of host cell interactions, some of which directly activate cell signaling pathways, and reprogram host gene transcription to promote survival in the mononuclear phagocyte. However, the molecular details of these effector-host interactions and roles in pathobiology are incompletely understood. In this study, we determined that the E. chaffeensis effector, TRP120, is post-translationally modified by ubiquitin (Ub), and ubiquitination occurs through intrinsic and host-mediated HECT ligase activity...
June 19, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/28629190/biotechnological-potential-of-cold-adapted-pseudoalteromonas-spp-isolated-from-deep-sea-sponges
#14
Erik Borchert, Stephen Knobloch, Emilie Dwyer, Sinéad Flynn, Stephen A Jackson, Ragnar Jóhannsson, Viggó T Marteinsson, Fergal O'Gara, Alan D W Dobson
The marine genus Pseudoalteromonas is known for its versatile biotechnological potential with respect to the production of antimicrobials and enzymes of industrial interest. We have sequenced the genomes of three Pseudoalteromonas sp. strains isolated from different deep sea sponges on the Illumina MiSeq platform. The isolates have been screened for various industrially important enzymes and comparative genomics has been applied to investigate potential relationships between the isolates and their host organisms, while comparing them to free-living Pseudoalteromonas spp...
June 19, 2017: Marine Drugs
https://www.readbyqxmd.com/read/28628292/an-environment-sensitive-turn-on-fluorescent-polyamino-acid-fingerprinting-protein-populations-with-post-translational-modifications
#15
Shunsuke Tomita, Sayaka Ishihara, Ryoji Kurita
The identification of post-translational modifications (PTMs) in proteins has been of particular interest in the elucidation of human diseases and the improvement of therapeutic proteins. Herein, we report a novel strategy toward the construction of fingerprint-based PTM sensing systems as an alternative to conventional specific recognition tools. Our strategy is based on poly-L-lysine (PLL) derivatives with two distinct properties suitable to fingerprint-based protein sensing: i) a "turn-on" fluorescent signal upon binding to proteins, and ii) condition-dependent cross-reactivity toward proteins and PTMs...
June 19, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28627688/danger-recognizing-proteins-%C3%AE-defensin-128-and-histatin-3-as-potential-biomarkers-of-recurrent-coronary-events
#16
Madankumar Ghatge, Ankit Sharma, Sangeeta Maity, Vijay V Kakkar, Rajani Kanth Vangala
Conventional risk factors have limited ability to predict recurrent events in subjects with first-time coronary artery disease (CAD). This aim of this study was to identify novel biomarkers using comparative global proteome analysis to improve the risk assessment for recurrent coronary events. We used samples from phase-I of the Indian Atherosclerosis Research Study (IARS), consisting of 2,332 subjects, of whom 772 were CAD-affected subjects, including 152 with recurrent events identified during a 5-year follow-up period...
June 19, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28627414/role-of-akt-hyperactivation-and-the-potential-of-akt-targeted-therapy-in-diffuse-large-b-cell-lymphoma
#17
Jinfen Wang, Zijun Y Xu-Monette, Kausar J Jabbar, Qi Shen, Ganiraju C Manyam, Alexandar Tzankov, Carlo Visco, Jing Wang, Santiago Montes-Moreno, Karen Dybkær, Wayne Tam, Govind Bhagat, Eric D Hsi, J Han van Krieken, Maurilio Ponzoni, Andrés J M Ferreri, Shi Wang, Michael B Møller, Miguel A Piris, L Jeffrey Medeiros, Yong Li, Lan V Pham, Ken H Young
AKT signaling is important for proliferation and survival of tumor cells. The clinical significance of AKT activation in diffuse large B-cell lymphoma (DLBCL) is not well analyzed. Here, we assessed expression of phosphorylated AKT (p-AKT) in 522 DLBCL patients. We found high levels of p-AKT nuclear expression, observed in 24.3% of the study cohort, were associated with significantly worse progression-free survival and Myc and Bcl-2 overexpression. However, multivariate analysis indicated that AKT hyperactivation was not an independent factor...
June 13, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28626565/site-specific-azide-acetyllysine-photochemistry-on-epigenetic-readers-for-interactome-profiling
#18
Babu Sudhamalla, Debasis Dey, Megan Breski, Tiffany Nguyen, Kabirul Islam
Chemical modifications on DNA, RNA and histones are recognized by an array of 'reader' modules to regulate transcriptional programming and cell fate. However, identification of reader-specific interacting partners in a dynamic cellular environment remains a significant challenge. Herein, we report a chemoproteomic approach termed 'interaction-based protein profiling' (IBPP) to characterize novel interacting partners of potentially any reader protein. IBPP harnesses a photosensitive amino acid introduced into the hydrophobic pocket of a reader module to crosslink and enrich transient interacting partners that are inaccessible to traditional methods...
June 1, 2017: Chemical Science
https://www.readbyqxmd.com/read/28624520/dissecting-the-chloroplast-proteome-of-chickpea-cicer-arietinum-l-provides-new-insights-into-classical-and-non-classical-functions
#19
Nilesh Vikram Lande, Pratigya Subba, Pragya Barua, Dipak Gayen, T S Keshava Prasad, Subhra Chakraborty, Niranjan Chakraborty
Chloroplast, the energy organelle unique to plant cells, is a dynamic entity which integrates an array of metabolic pathways and serves as first level for energy conversion for the entire ecological hierarchy. Increasing amount of sequence data and evolution of mass spectrometric approaches has opened up new avenues for opportune exploration of the global proteome of this organelle. In our study, we aimed at generation of a comprehensive catalogue of chloroplast proteins in a grain legume, chickpea and provided a reference proteome map...
June 14, 2017: Journal of Proteomics
https://www.readbyqxmd.com/read/28624391/efficacy-of-melatonin-il-25-and-siil-17b-in-tumorigenesis-associated-properties-of-breast-cancer-cell-lines
#20
Gabriela Bottaro Gelaleti, Thaiz Ferraz Borin, Larissa Bazela Maschio-Signorini, Marina Gobbe Moschetta, Bruna Victorasso Jardim-Perassi, Guilherme Berto Calvinho, Mariana Castilho Facchini, Alicia M Viloria-Petit, Debora Aparecida Pires de Campos Zuccari
Mammary tumorigenesis can be modulated by melatonin, which has oncostatic action mediated by multiple mechanisms, including the inhibition of the activity of transcription factors such as NF-κB and modulation of interleukins (ILs) expression. IL-25 is an active cytokine that induces apoptosis in tumor cells due to differential expression of its receptor (IL-17RB). IL-17B competes with IL-25 for binding to IL-17RB in tumor cells, promoting tumorigenesis. This study purpose is to address the possibility of engaging IL-25/IL-17RB signaling to enhance the effect of melatonin on breast cancer cells...
June 14, 2017: Life Sciences
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