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https://www.readbyqxmd.com/read/28102911/glutathione-peroxidase-like-enzymes-cover-five-distinct-cell-compartments-and-membrane-surfaces-in-arabidopsis-thaliana
#1
Safira Attacha, David Solbach, Krisztina Bela, Anna Moseler, Stephan Wagner, Markus Schwarzländer, Isabel Aller, Stefanie J Müller, Andreas J Meyer
Glutathione peroxidase-like enzymes (GPXLs) constitute a family of eight peroxidases in Arabidopsis thaliana. In contrast to the eponymous selenocysteine glutathione peroxidases (GPXs) in mammalian cells which use glutathione as electron donor, GPXLs rely on cysteine instead of selenocysteine for activity and depend on the thioredoxin system for reduction. Although plant GPXLs have been implicated in important agronomic traits such as drought tolerance, photooxidative tolerance and immune responses there remain major ambiguities regarding their subcellular localization...
January 19, 2017: Plant, Cell & Environment
https://www.readbyqxmd.com/read/28102081/deep-coverage-of-global-protein-expression-and-phosphorylation-in-breast-tumor-cell-lines-using-tmt-10-plex-isobaric-labeling
#2
Fang-Ke Huang, Guoan Zhang, Kevin Lawlor, Arpi Nazarian, John Philip, Paul Tempst, Noah Dephoure, Thomas A Neubert
Labeling peptides with isobaric tags is a popular strategy in quantitative bottom-up proteomics. In this study, we labeled six breast tumor cell lysates (1.34 mg proteins per channel) using 10-plex tandem mass tag reagents and analyzed the samples on a Q Exactive HF Quadrupole-Orbitrap mass spectrometer. We identified a total of 8706 proteins and 28186 phosphopeptides, including 7394 proteins and 23739 phosphosites common to all channels. The majority of technical replicates correlated with a R2 ≥ 0.98, indicating minimum variability was introduced after labeling...
January 19, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/28101909/efficient-transdifferentiation-of-human-dermal-fibroblasts-into-skeletal-muscle
#3
Selwa Mokhtar Boularaoui, Khaled M A Abdel-Raouf, Noaf Salah Ali Alwahab, Megan E Kondash, George A Truskey, Jeremy Choon Meng Teo, Nicolas Christoforou
Skeletal muscle holds significant regenerative potential but is incapable of restoring tissue loss caused due to severe injury, congenital defects, or tumor ablation. Consequently, skeletal muscle models are being developed to study human pathophysiology and regeneration. Their physiological accuracy, however, is hampered by the lack of an easily accessible human cell source that is readily expandable and capable of efficient differentiation. MYOD1, a master gene regulator, induces transdifferentiation of a variety of cell types into skeletal muscle, although inefficiently in human cells...
January 18, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28101702/bone-marrow-very-small-embryonic-like-stem-cells-new-generation-of-autologous-cell-therapy-soon-ready-for-prime-time
#4
EDITORIAL
David M Smadja
Very small embryonic-like stem cells (VSELs) are major pluripotent stem cells described in human and mouse. In this issue of Stem Cell Reviews and Reports, Shaikh and colleagues show in a valuable work that mouse bone marrow collected after 5FU treatment contains VSELs able to undergo in vitro multi-lineage differentiation into cells from all three germ layers and also in germ and hematopoietic cells. These findings are robust since no confounding factor such as feeder cell fusion with VSELs can occur here...
January 18, 2017: Stem Cell Reviews
https://www.readbyqxmd.com/read/28101679/inhibitory-effect-of-saliva-on-osteoclastogenesis-in-vitro-requires-toll-like-receptor-4-signaling
#5
Heinz-Dieter Müller, Jordi Caballé-Serrano, Adrian Lussi, Reinhard Gruber
OBJECTIVES: Saliva can suppress osteoclastogenesis, but the underlying mechanism has not been discovered yet. Considering that endotoxins suppress osteoclastogenesis in bone marrow cultures and that saliva contains endotoxins, it was reasonable to hypothesize that the impact of saliva on osteoclastogenesis requires toll-like receptor 4 signaling. MATERIAL AND METHODS: To test this hypothesis, we blocked toll-like receptor 4 signaling with TAK-242 in the presence of saliva in murine bone marrow cultures...
January 18, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28101221/a-complex-translocation-3-17-15-in-acute-promyelocytic-leukemia-confirmed-by-fluorescence-in-situ-hybridization
#6
Yanming Wang, Junjie Ma, Xinguang Liu, Riming Liu, Lingling Xu, Li Wang, Jiannong Cen, Xiaoxia Chu
Acute promyelocytic leukemia (APL) is typified by t(15;17)(q22;q21), generating the promyelocytic leukemia (PML) gene at 15q22 with the retinoic acid α-receptor (RARA) gene at 17q21. The PML-RARA fusion gene is believed to play a vital role in leukemogenesis. A sizeable minority of patients with complex variants of APL have been reported. The present study reports the case of a 33-year-old male with APL carrying a potential complex translocation. The initial symptom was bleeding gums. Chromosomal analysis of the bone marrow cells revealed an atypical 17q aberration...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28101031/alectinib-induced-erythema-multiforme-and-successful-rechallenge-with-alectinib-in-a-patient-with-anaplastic-lymphoma-kinase-rearranged-lung-cancer
#7
Tatsuo Kimura, Junko Sowa-Osako, Toshiyuki Nakai, Ayako Ohyama, Tomoya Kawaguchi, Daisuke Tsuruta, Masahiko Ohsawa, Kazuto Hirata
BACKGROUND: Alectinib is an oral drug developed for the treatment of patients with fusion gene encoding echinoderm microtubule-associated protein-like 4-anaplastic lymphoma kinase (EML4-ALK)-rearranged non-small cell lung cancer (NSCLC). Here, we present the case of a patient treated with alectinib who developed a hypersensitivity reaction with successful rechallenge treatment. CASE PRESENTATION: A 39-year-old woman who was a passive smoker was referred to Osaka City University Hospital for the evaluation of a skin event caused by treatment for NSCLC with the fusion gene EML4-ALK...
September 2016: Case Reports in Oncology
https://www.readbyqxmd.com/read/28100665/co-option-of-bacteriophage-lysozyme-genes-by-bivalve-genomes
#8
Qian Ren, Chunyang Wang, Min Jin, Jiangfeng Lan, Ting Ye, Kaimin Hui, Jingmin Tan, Zheng Wang, Gerald J Wyckoff, Wen Wang, Guan-Zhu Han
Eukaryotes have occasionally acquired genetic material through horizontal gene transfer (HGT). However, little is known about the evolutionary and functional significance of such acquisitions. Lysozymes are ubiquitous enzymes that degrade bacterial cell walls. Here, we provide evidence that two subclasses of bivalves (Heterodonta and Palaeoheterodonta) acquired a lysozyme gene via HGT, building on earlier findings. Phylogenetic analyses place the bivalve lysozyme genes within the clade of bacteriophage lysozyme genes, indicating that the bivalves acquired the phage-type lysozyme genes from bacteriophages, either directly or through intermediate hosts...
January 2017: Open Biology
https://www.readbyqxmd.com/read/28100639/munc13-4-functions-as-a-ca2-sensor-for-homotypic-secretory-granule-fusion-to-generate-endosomal-exocytic-vacuoles
#9
Sang Su Woo, Declan J James, Thomas F J Martin
Munc13-4 is a Ca(2+)-dependent SNARE- and phospholipid-binding protein that localizes to and primes secretory granules (SGs) for Ca(2+)-evoked secretion in various secretory cells. Studies in mast cell-like RBL-2H3 cells provides direct evidence that Munc13-4 with its two Ca(2+)-binding C2 domains functions as a Ca(2+) sensor for SG exocytosis. Unexpectedly, Ca(2+) stimulation also generated large (>2.4 μm diameter) Munc13-4(+)/Rab7(+)/Rab11(+) endosomal vacuoles. Vacuole generation involved the homotypic fusion of Munc13-4(+)/Rab7(+) SGs followed by a merge with Rab11(+) endosomes, and depended on Ca(2+) binding to Munc13-4...
January 18, 2017: Molecular Biology of the Cell
https://www.readbyqxmd.com/read/28100623/temperature-sensitive-lesion-in-the-n-terminal-domain-of-the-rotavirus-polymerase-affects-its-intracellular-localization-and-enzymatic-activity
#10
Allison O McKell, Leslie E W LaConte, Sarah M McDonald
: Temperature-sensitive (ts) mutants of simian rotavirus (RV) strain SA11 have been previously created to investigate the functions of viral proteins during replication. One mutant, SA11-tsC, maps to the gene encoding the VP1 polymerase and shows diminished growth and RNA synthesis at 39°C as compared to 31°C. In the current study, we sequenced all 11 genes of SA11-tsC, confirming the presence of an L138P mutation in the VP1 N-terminal domain and identifying 52 additional mutations in four other viral proteins (VP7, VP4, NSP2, and NSP1)...
January 18, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28100619/functional-analysis-of-hcv-envelope-protein-e1-using-a-trans-complementation-system-reveals-a-dual-role-of-a-putative-fusion-peptide-of-e1-in-both-hcv-entry-and-morphogenesis
#11
Yimin Tong, Xiaojing Chi, Wei Yang, Jin Zhong
: Hepatitis C virus (HCV) is an enveloped RNA virus belonging to the Flaviviridae family. It mainly infects human hepatocytes and causes chronic liver diseases including cirrhosis and cancer. HCV encodes two envelope proteins E1 and E2 that form a heterodimer and mediate virus entry. While E2 has been extensively studied, less has been done so for E1, and its role in HCV life cycle still needs to be elucidated. Here we developed a new cell culture model for HCV infection based on trans-complementation of E1...
January 18, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28100610/the-measles-virus-receptor-slamf1-can-mediate-particle-endocytosis
#12
Daniel Gonçalves-Carneiro, Jane A McKeating, Dalan Bailey
: The signalling lymphocyte activation molecule F1 (SLAMF1) is both a microbial sensor and entry receptor for Measles virus (MeV). Herein, we describe a new role for SLAMF1 to mediate MeV endocytosis that is in contrast with the alternative, and generally accepted, model that MeV genome enters cells only after fusion at the cell surface. We demonstrated that MeV engagement of SLAMF1 induces dramatic but transient morphological changes, most prominently in the formation of membrane blebs, which were shown to co-localise with incoming viral particles, and rearrangement of the actin cytoskeleton in infected cells...
January 18, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28100566/loss-of-axin1-drives-acquired-resistance-to-wnt-pathway-blockade-in-colorectal-cancer-cells-carrying-rspo3-fusions
#13
Gabriele Picco, Consalvo Petti, Alessia Centonze, Erica Torchiaro, Giovanni Crisafulli, Luca Novara, Andrea Acquaviva, Alberto Bardelli, Enzo Medico
In colorectal cancer (CRC), WNT pathway activation by genetic rearrangements of RSPO3 is emerging as a promising target. However, its low prevalence severely limits availability of preclinical models for in-depth characterization. Using a pipeline designed to suppress stroma-derived signal, we find that RSPO3 "outlier" expression in CRC samples highlights translocation and fusion transcript expression. Outlier search in 151 CRC cell lines identified VACO6 and SNU1411 cells as carriers of, respectively, a canonical PTPRK(e1)-RSPO3(e2) fusion and a novel PTPRK(e13)-RSPO3(e2) fusion...
January 18, 2017: EMBO Molecular Medicine
https://www.readbyqxmd.com/read/28099204/narrowing-in-on-the-anti-%C3%AE-cell-specific-t-cells-looking-where-the-action-is
#14
Sally C Kent, Jenny Aurielle B Babon
PURPOSE OF THE REVIEW: By necessity, the vast majority of information we have on autoreactive T cells in human type 1 diabetes (T1D) has come from the study of peripheral blood of donors with T1D. It is not clear how representative the peripheral autoreactive T-cell repertoire is of the autoreactive T cells infiltrating the islets in T1D. We will summarize and discuss what is known of the immunohistopathology of insulitis, the T-cell receptor repertoire expressed by islet-infiltrating T cells, and the autoreactivity and function of islet-infiltrating T cells in T1D...
January 17, 2017: Current Opinion in Endocrinology, Diabetes, and Obesity
https://www.readbyqxmd.com/read/28098874/mica-il-12-a-novel-bifunctional-protein-for-killer-cell-activation
#15
Ashlee Tietje, Xi Yang, Xianzhong Yu, Yanzhang Wei
Natural killer (NK) cells have the potential to be effective killers of tumor cells. They are governed by inhibitory and activating receptors such as NKG2D, whose ligands are normally upregulated in cells that are stressed, like cancer cells. Advanced cancer cells, however, have ways to reduce the expression of these ligands, leaving them less detectable by NK cells. Along with these receptors, NK cells also require activating cytokines, such as IL-12. A previous study in our laboratory showed that a fusion protein of the extracellular domain of mouse UL-16 binding protein-like transcript 1 (MULT1E) and mouse interleukin 12 (IL-12) can effectively activate mouse NK cells by in vitro assays and in vivo in animal tumor models...
January 16, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28098754/drp1-dependent-mitochondrial-fission-plays-critical-roles-in-physiological-and-pathological-progresses-in-mammals
#16
REVIEW
Chenxia Hu, Yong Huang, Lanjuan Li
Current research has demonstrated that mitochondrial morphology, distribution, and function are maintained by the balanced regulation of mitochondrial fission and fusion, and perturbation of the homeostasis between these processes has been related to cell or organ dysfunction and abnormal mitochondrial redistribution. Abnormal mitochondrial fusion induces the fragmentation of mitochondria from a tubular morphology into pieces; in contrast, perturbed mitochondrial fission results in the fusion of adjacent mitochondria...
January 13, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28098558/platelet-derived-growth-factor-pdgf-signaling-directs-cardiomyocyte-movement-toward-the-midline-during-heart-tube-assembly
#17
Joshua Bloomekatz, Reena Singh, Owen Wj Prall, Ariel C Dunn, Megan Vaughan, Chin-San Loo, Richard P Harvey, Deborah Yelon
Communication between neighboring tissues plays a central role in guiding organ morphogenesis. During heart tube assembly, interactions with the adjacent endoderm control the medial movement of cardiomyocytes, a process referred to as cardiac fusion. However, the molecular underpinnings of this endodermal-myocardial relationship remain unclear. Here, we show an essential role for platelet-derived growth factor receptor alpha (Pdgfra) in directing cardiac fusion. Mutation of pdgfra disrupts heart tube assembly in both zebrafish and mouse...
January 18, 2017: ELife
https://www.readbyqxmd.com/read/28097823/excess-retinoic-acid-induces-fusion-of-centra-by-degenerating-intervertebral-ligament-cells-in-japanese-flounder-paralichthys-olivaceus
#18
Xiaoming Wu, Qiran Chen, Youhei Washio, Hayato Yokoi, Tohru Suzuki
In marine aquaculture fish, excessive supplement of vitamin A (VA) to zooplanktons for larval culture and experimental exposure of larvae to retinoic acid (RA: active form of VA) have been known to cause vertebral deformity. However, the tissues in the developing vertebral column that are affected by RA and the progression of vertebral deformity remain undetermined. To examine these questions, we histologically traced the progress of vertebral deformity induced by RA in Japanese flounder (Paralichthys olivaceus)...
January 18, 2017: Journal of Experimental Zoology. Part B, Molecular and Developmental Evolution
https://www.readbyqxmd.com/read/28097530/virus-induced-hepatocellular-carcinoma-with-special-emphasis-on-hbv
#19
REVIEW
Ming Wang, Dong Xi, Qin Ning
Hepatocellular carcinoma (HCC) is a common malignant tumor with high lethality, and the hepatitis B virus (HBV) is a chief cause. HBV can accelerate HCC via multiple mechanisms. First, HBV induces immune reactions that lead to repeated hepatic inflammation, fibrosis and a deficient immune microenvironment. Subsequently, HBV can modify host genes near the insertion point through DNA integration to cause host cell genome instability and to generate carcinogenic fusion proteins. Additionally, HBV expresses diverse active proteins, especially HBx and HBs, which have a range of transactivation functions such as regulation of apoptosis, interference with intracellular signaling pathways, and alteration of epigenetics...
January 17, 2017: Hepatology International
https://www.readbyqxmd.com/read/28097218/energy-penetration-into-arrays-of-aligned-nanowires-irradiated-with-relativistic-intensities-scaling-to-terabar-pressures
#20
Clayton Bargsten, Reed Hollinger, Maria Gabriela Capeluto, Vural Kaymak, Alexander Pukhov, Shoujun Wang, Alex Rockwood, Yong Wang, David Keiss, Riccardo Tommasini, Richard London, Jaebum Park, Michel Busquet, Marcel Klapisch, Vyacheslav N Shlyaptsev, Jorge J Rocca
Ultrahigh-energy density (UHED) matter, characterized by energy densities >1 × 10(8) J cm(-3) and pressures greater than a gigabar, is encountered in the center of stars and inertial confinement fusion capsules driven by the world's largest lasers. Similar conditions can be obtained with compact, ultrahigh contrast, femtosecond lasers focused to relativistic intensities onto targets composed of aligned nanowire arrays. We report the measurement of the key physical process in determining the energy density deposited in high-aspect-ratio nanowire array plasmas: the energy penetration...
January 2017: Science Advances
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