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https://www.readbyqxmd.com/read/28224701/pathogenic-role-of-anti-srp-and-anti-hmgcr-antibodies-in-necrotizing-myopathies-myofiber-atrophy-and-impairment-of-muscle-regeneration-in-necrotizing-autoimmune-myopathies
#1
Louiza Arouche-Delaperche, Yves Allenbach, Damien Amelin, Corinna Preusse, Vincent Mouly, Wladimir Mauhin, Gaelle Dzangue Tchoupou, Laurent Drouot, Olivier Boyer, Werner Stenzel, Gillian Butler-Browne, Olivier Benveniste
OBJECTIVE: Immune mediated necrotizing myopathies (IMNM) may be associated with either anti-SRP or anti-HMGCR antibodies (Abs) and the titer of these Abs is correlated with the disease activity. We investigated if anti-SRP and anti-HMGCR Abs could be involved in muscle damages. METHODS: Muscle biopsies of patients were analyzed for atrophy and regeneration, by measuring the fibers size and by performing immunostaining of neonatal myosin heavy chain. To further understand the role of the Abs in the pathology, we performed muscle cell co-culture with the Abs...
February 22, 2017: Annals of Neurology
https://www.readbyqxmd.com/read/28219219/-clinical-features-and-prognosis-in-cd10-pre-b-acute-lymphoblastic-leukemia
#2
X Y Gong, Y Wang, B C Liu, H Wei, C L Zhou, D Lin, K Q Liu, S N Wei, B F Gong, G J Zhang, Y T Liu, X L Zhao, Y Li, R X Gu, S W Qiu, Y C Mi, J X Wang
Objective: To analyze the clinical features and prognosis of acute lymphoblastic leukemia patients with immunophenotype of CD10(-)pre-B (CD10(-) pre B-ALL) . Methods: 6 adult cases with CD10(-) pre B-ALL immunophenotypes were analyzed retrospectively, related literatures were reviewed to clarify these kind of patients' clinical features and prognosis. Results: CD10(-) pre B-ALL occurred in 1.5% of ALL, 1.8% of B-ALL and 11.5% of pre B-ALL respectively. All the 6 patients were male with the median age as 33...
January 14, 2017: Zhonghua Xue Ye Xue za Zhi, Zhonghua Xueyexue Zazhi
https://www.readbyqxmd.com/read/28219197/-down-regulation-of-mir-146b-5p-promotes-malignant-transformation-of-fusion-cells-after-co-culture-of-macrophages-with-glioma-stem-cells-in-vitro
#3
H H Cai, H Y Wang, H R Liu, Y J Sheng, D G Xi, Y P Xue, X L Dai, A D Wang, Q Huang, J Dong
Objective: To observe mutual interactions between macrophages(Mφ) and glioma stem cells (GSCs)in dual-color tracing model in vitro, to identify the biological characteristics of fusion cells in multiple levels, and to analysis the relevant molecular mechanisms. Methods: Red fluorescent protein(RFP) gene was stably transfected into human GSCs cell line SU4. Mφ cells were obtained from Balb/c nude mice with enhanced green fluorescent protein (EGFP) expression. Then two cells were co-cultured in dual-color tracing platform...
February 7, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28212572/concurrent-gene-alterations-with-egfr-mutation-and-treatment-efficacy-of-egfr-tkis-in-chinese-patients-with-non-small-cell-lung-cancer
#4
Wentao Hu, Yahui Liu, Jian Chen
PURPOSE: We investigated the frequency of concurrent genes in EGFR-mutant non-small cell lung cancer patients and determined its value in predicting the efficacy of EGFR-TKIs treatment. METHODS: Three hundred and twenty patients, who harbored EGFR activating mutations and received EGFR-TKIs treatment, were examined for another eight genes including KRAS, NRAS, PIK3CA, BRAF, and HER2 mutations and ALK, ROS1, and RET fusion genes based on reverse transcription PCR...
February 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28208226/a-rare-case-of-tfe-related-pigmented-renal-tumor-with-overlapping-features-between-melanotic-xp11-translocation-renal-cancer-and-xp11-renal-cell-carcinoma-with-melanotic-features
#5
Leonardo Cardili, Gregório Wrublevsky Pereira, Cristiano Ribeiro Viana
In recent years, an increasing number of TFE3 rearrangement-associated tumors with melanotic features have been reported as primary neoplasm in different anatomical sites, including the kidney. Melanotic Xp11 translocation renal cancer (MXTRC) and Xp11 renal cell carcinoma with melanotic features (XRCCM) have been proposed to be main categories for pigmented lesions in the microophthalmia-associated transcription factor (MiTF/TFE3) family of renal tumors that may show variable degrees of melanocytic differentiation...
February 16, 2017: Pathology International
https://www.readbyqxmd.com/read/28207819/the-ins-and-outs-of-eukaryotic-viruses-knowledge-base-and-ontology-of-a-viral-infection
#6
Chantal Hulo, Patrick Masson, Edouard de Castro, Andrea H Auchincloss, Rebecca Foulger, Sylvain Poux, Jane Lomax, Lydie Bougueleret, Ioannis Xenarios, Philippe Le Mercier
Viruses are genetically diverse, infect a wide range of tissues and host cells and follow unique processes for replicating themselves. All these processes were investigated and indexed in ViralZone knowledge base. To facilitate standardizing data, a simple ontology of viral life-cycle terms was developed to provide a common vocabulary for annotating data sets. New terminology was developed to address unique viral replication cycle processes, and existing terminology was modified and adapted. The virus life-cycle is classically described by schematic pictures...
2017: PloS One
https://www.readbyqxmd.com/read/28206710/sucrose-transporter2-contributes-to-maize-growth-development-and-crop-yield
#7
Kristen A Leach, Thu M Tran, Thomas L Slewinski, Robert B Meeley, David M Braun
During daylight, plants produce excess photosynthates, including sucrose, which is temporarily stored in the vacuole. At night, plants remobilize sucrose to sustain metabolism and growth. Based on homology to other sucrose transporter (SUT) proteins, we hypothesized the maize (Zea mays) SUCROSE TRANSPORTER2 (ZmSUT2) protein functions as a sucrose/H(+) symporter on the vacuolar membrane to export transiently stored sucrose. To understand the biological role of ZmSut2, we examined its spatial and temporal gene expression, determined the protein subcellular localization, and characterized loss-of-function mutations...
February 16, 2017: Journal of Integrative Plant Biology
https://www.readbyqxmd.com/read/28202504/expression-profiling-of-circulating-microvesicles-reveals-intercellular-transmission-of-oncogenic-pathways
#8
Gloria Milani, Tobia Lana, Silvia Bresolin, Sanja Aveic, Anna Pasto, Chiara Frasson, Geertruy Te Kronnie
: Circulating microvesicles (MVs) have been described as important players in cell-to-cell communication carrying biological information under normal or pathological condition. MVs released by cancer cells may incorporate diverse biomolecules (e.g. active lipids, proteins and RNA) which can be delivered and internalized by recipient cells, potentially altering gene expression of recipient cells and eventually impacting disease progression. Leukemia in vitro model systems were used to investigate MVs as vehicles of protein-coding messages...
February 15, 2017: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/28199742/genetic-analysis-and-clinicopathological-features-of-alk-rearranged-renal-cell-carcinoma-in-a-large-series-of-resected-chinese-renal-cell-carcinoma-patients-and-literature-review
#9
Wenjuan Yu, Yuewei Wang, Yanxia Jiang, Wei Zhang, Yujun Li
AIMS: Anaplastic lymphoma kinase (ALK)-rearranged renal cell carcinoma (RCC) is a rare subtype of RCC reported in recent years with 8 cases so far. The present study is focused on screening ALK-rearranged cases from a large cohort of RCCs in China to determine the frequency of ALK rearrangement and investigate the clinicopathological features and outcomes. METHODS AND RESULTS: Tissues from a total of 477 RCC patients in China were embedded into tissue microarrays for immunostaining...
February 15, 2017: Histopathology
https://www.readbyqxmd.com/read/28196871/identification-of-a-transcriptional-activation-domain-in-yeast-repressor-activator-protein-1-rap1-using-an-altered-dna-binding-specificity-variant
#10
Amanda N Johnson, P Anthony Weil
Repressor Activator Protein 1 (Rap1) performs multiple vital cellular functions in the budding yeast Saccharomyces cerevisiae. These include regulation of telomere length, transcriptional repression of both telomere-proximal genes and the silent mating type loci, and transcriptional activation of hundreds of mRNA-encoding genes, including the highly transcribed ribosomal protein- and glycolytic enzyme-encoding genes. Studies of the contributions of Rap1 to telomere length regulation and transcriptional repression have yielded significant mechanistic insights...
February 14, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28193896/regulatory-cascade-and-biological-activity-of-beauveria-bassiana-oosporein-that-limits-bacterial-growth-after-host-death
#11
Yanhua Fan, Xi Liu, Nemat O Keyhani, Guirong Tang, Yan Pei, Wenwen Zhang, Sheng Tong
The regulatory network and biological functions of the fungal secondary metabolite oosporein have remained obscure. Beauveria bassiana has evolved the ability to parasitize insects and outcompete microbial challengers for assimilation of host nutrients. A novel zinc finger transcription factor, BbSmr1 (B. bassiana secondary metabolite regulator 1), was identified in a screen for oosporein overproduction. Deletion of Bbsmr1 resulted in up-regulation of the oosporein biosynthetic gene cluster (OpS genes) and constitutive oosporein production...
February 13, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28193277/anti-tumor-effects-of-a-recombinant-anti-prostate-specific-membrane-antigen-immunotoxin-against-prostate-cancer-cells
#12
Ping Meng, Qing-Chuan Dong, Guang-Guo Tan, Wei-Hong Wen, He Wang, Geng Zhang, Yan-Zhu Wang, Yu-Ming Jing, Chen Wang, Wei-Jun Qin, Jian-Lin Yuan
BACKGROUND: To evaluate anti-prostate cancer effects of a chimeric tumor-targeted killer protein. METHODS: We established a novel fusion gene, immunocasp-3, composed of NH2-terminal leader sequence fused with an anti-prostate-specific membrane antigen (PSMA) antibody (J591), the furin cleavage sequences of diphtheria toxin (Fdt), and the reverse coding sequences of the large and small subunits of caspase-3 (revcaspase-3). The expressing level of the immunocasp-3 gene was evaluated by using the reverse transcription-PCR (RT-PCR) and western blot analysis...
February 13, 2017: BMC Urology
https://www.readbyqxmd.com/read/28193216/a-high-throughput-expression-screening-platform-to-optimize-the-production-of-antimicrobial-peptides
#13
Christine Schreiber, Hagen Müller, Oliver Birrenbach, Moritz Klein, Doreen Heerd, Tobias Weidner, Denise Salzig, Peter Czermak
BACKGROUND: Antimicrobial peptides (AMPs) are promising candidates for the development of novel antibiotics, but it is difficult to produce sufficient quantities for preclinical and clinical studies due to their toxicity towards microbial expression hosts. To avoid laborious trial-and-error testing for the identification of suitable expression constructs, we have developed a small-scale expression screening platform based on a combinatorial plasmid library. RESULTS: The combinatorial library is based on the Golden Gate cloning system...
February 13, 2017: Microbial Cell Factories
https://www.readbyqxmd.com/read/28186972/recurrent-fusion-transcripts-in-squamous-cell-carcinomas-of-the-vulva
#14
Marta Brunetti, Antonio Agostini, Ben Davidson, Claes G Tropé, Sverre Heim, Ioannis Panagopoulos, Francesca Micci
Juxtaposition of two different genes or gene parts due to chromosomal rearrangement is a well-known neoplasia-associated pathogenetic mechanism. The detection and characterization of such tumorigenic fusions is of great importance both research-wise, diagnostically because they may be specific for distinct tumor entities, and because they may serve as therapeutic targets for antioncogenic drugs that interact directly with the molecular changes responsible for neoplastic transformation.At present, more than 10,000 fusion transcripts have been reported in different types of neoplasia, with one tenth of them being identified in squamous cell carcinomas (SCC) of different locations...
February 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/28185541/kaos-a-new-automated-computational-method-for-the-identification-of-overexpressed-genes
#15
Angelo Nuzzo, Giovanni Carapezza, Sebastiano Di Bella, Alfredo Pulvirenti, Antonella Isacchi, Roberta Bosotti
BACKGROUND: Kinase over-expression and activation as a consequence of gene amplification or gene fusion events is a well-known mechanism of tumorigenesis. The search for novel rearrangements of kinases or other druggable genes may contribute to understanding the biology of cancerogenesis, as well as lead to the identification of new candidate targets for drug discovery. However this requires the ability to query large datasets to identify rare events occurring in very small fractions (1-3 %) of different tumor subtypes...
November 8, 2016: BMC Bioinformatics
https://www.readbyqxmd.com/read/28183680/diagnosis-of-variant-rara-translocation-using-standard-dual-color-dual-fusion-pml-rara-fish-probes-an-illustrative-report
#16
Manish K Singh, Mayur Parihar, Neeraj Arora, D K Mishra, Saurabh J Bhave, Mammen Chandy
Acute promyelocytic leukemia (APML) with variant RARa translocations comprises 1-2% of APML cases. However, the diagnosis of these cases is challenging as the routine practice includes fluorescence in situ hybridization (FISH) reverse transcription polymerase chain reaction targeting the PML and RARA genes to detect PML/RARA fusions. Here, we report a case highlighting the importance of atypical FISH signal patterns in standard dual-color dual-fusion PML/RARa FISH analysis complimented by karyotyping to detect these variant RARA translocations...
February 1, 2017: Hematology/oncology and Stem Cell Therapy
https://www.readbyqxmd.com/read/28181538/epigenetic-editing-of-ascl1-gene-in-neural-stem-cells-by-optogenetics
#17
Chiao-Ling Lo, Samrat Roy Choudhury, Joseph Irudayaraj, Feng C Zhou
Enzymes involved in epigenetic processes such as methyltransferases or demethylases are becoming highly utilized for their persistent DNA or histone modifying efficacy. Herein, we have developed an optogenetic toolbox fused to the catalytic domain (CD) of DNA-methyltransferase3A (DNMT3A-CD) or Ten-Eleven Dioxygenase-1 (TET1-CD) for loci-specific alteration of the methylation state at the promoter of Ascl1 (Mash1), a candidate proneuron gene. Optogenetical protein pairs, CRY2 linked to DNMT3A-CD or TET1-CD and CIB1 fused to a Transcription Activator-Like Element (TALE) locating an Ascl1 promoter region, were designed for site specific epigenetic editing...
February 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28179318/rearrangement-of-the-chromatin-organizer-special-at-rich-binding-protein-1-gene-satb1-resulting-from-a-t-3-5-p24-q14-chromosomal-translocation-in-acute-myeloid-leukemia
#18
Synne Torkildsen, Marta Brunetti, Ludmila Gorunova, Signe Spetalen, Klaus Beiske, Sverre Heim, Ioannis Panagopoulos
BACKGROUND/AIM: New chromosomal aberrations continue to be reported in acute myeloid leukemias (AML). The addition of more cases with the same genetic characteristics would establish an acquired aberration as a recurrent change, help determine its prognostic significance, and can provide insight into the mechanisms of leukemogenesis in patients with these rare abnormalities. CASE REPORT: RNA-sequencing was performed on a patient with AML with the bone marrow karyotype 46,XY,t(3;5)(p24;q14)[5]/46,XY[10]...
2017: Anticancer Research
https://www.readbyqxmd.com/read/28177825/enhancement-of-single-guide-rna-transcription-for-efficient-crispr-cas-based-genomic-engineering
#19
Kumiko Ui-Tei, Shohei Maruyama, Yuko Nakano
Genomic engineering using clustered regularly interspaced short palindromic repeats (CRISPR) and CRISPR-associated (Cas) protein is a promising approach for targeting the genomic DNA of virtually any organism in a sequence-specific manner. Recent remarkable advances in CRISPR/Cas technology have made it a feasible system for use in therapeutic applications and biotechnology. In the CRISPR/Cas system, a guide RNA (gRNA), interacting with the Cas protein, recognizes a genomic region with sequence complementarity, and the double-stranded DNA at the target site is cleaved by the Cas protein...
January 26, 2017: Genome Génome / Conseil National de Recherches Canada
https://www.readbyqxmd.com/read/28174417/amkl-chimeric-transcription-factors-are-potent-inducers-of-leukemia
#20
J Dang, S Nance, J Ma, J Cheng, M P Walsh, P Vogel, J Easton, G Song, M Rusch, A L Gedman, C Koss, J R Downing, T A Gruber
Acute megakaryoblastic leukemia in patients without Down syndrome is a rare malignancy with a poor prognosis. RNA sequencing of fourteen pediatric cases previously identified novel fusion transcripts that are predicted to be pathologic including CBFA2T3-GLIS2, GATA2-HOXA9, MN1-FLI, and NIPBL-HOXB9. In contrast to CBFA2T3-GLIS2 which is insufficient to induce leukemia, we demonstrate that the introduction of GATA2-HOXA9, MN1-FLI1 or NIPBL-HOXB9 into murine bone marrow induces overt disease in syngeneic transplant models...
February 8, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
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