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Cell to cell fusion

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https://www.readbyqxmd.com/read/28088512/ros1-fusions-rarely-overlap-with-other-oncogenic-drivers-in-non-small-cell-lung-cancer
#1
Jessica J Lin, Lauren L Ritterhouse, Siraj M Ali, Mark Bailey, Alexa B Schrock, Justin F Gainor, Lorin A Ferris, Mari Mino-Kenudson, Vincent A Miller, Anthony J Iafrate, Jochen K Lennerz, Alice T Shaw
INTRODUCTION: Chromosomal rearrangements involving the ROS proto-oncogene 1 receptor tyrosine kinase gene (ROS1) define a distinct molecular subset of non-small cell lung cancer (NSCLC) with sensitivity to ROS1 inhibitors. Recent reports have suggested a significant overlap between ROS1 fusions and other oncogenic driver alterations, including mutations in epidermal growth factor receptor (EGFR) and KRAS proto-oncogene (KRAS). METHODS: We identified patients at our institution with ROS1-rearranged NSCLC who had undergone testing for genetic alterations in additional oncogenes, including EGFR, KRAS, and anaplastic lymphoma kinase (ALK)...
January 11, 2017: Journal of Thoracic Oncology
https://www.readbyqxmd.com/read/28087574/stabilization-of-wild-type-mll-displaces-oncogenic-mll-fusion-proteins
#2
(no author information available yet)
IL1 signaling promotes degradation of wild-type MLL to enhance MLL leukemia cell proliferation.
January 13, 2017: Cancer Discovery
https://www.readbyqxmd.com/read/28087528/engineering-mycobacteria-for-the-production-of-self-assembling-biopolyesters-displaying-mycobacterial-antigens-for-use-as-tuberculosis-vaccine
#3
Jason W Lee, Natalie A Parlane, Bernd H A Rehm, Bryce M Buddle, Axel Heiser
: Tuberculosis (TB) is a disease caused by Mycobacterium tuberculosis or Mycobacterium bovis and still remains one of the world's biggest global health burdens. Recently, engineered polyhydroxyalkanoate (PHA) biobeads produced in both E. coli and Lactococcus lactis displaying mycobacterial antigens were found to induce significant cell mediated immune responses in mice. We observed that such PHA beads contained host cell proteins as impurities which we hypothesized to have the potential to induce immunity...
January 13, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28081156/generation-of-a-stable-transgenic-swine-model-expressing-a-porcine-histone-2b-egfp-fusion-protein-for-cell-tracking-and-chromosome-dynamics-studies
#4
Renan B Sper, Sehwon Koh, Xia Zhang, Sean Simpson, Bruce Collins, Jeff Sommer, Robert M Petters, Ignacio Caballero, Jeff L Platt, Jorge A Piedrahita
Transgenic pigs have become an attractive research model in the field of translational research, regenerative medicine, and stem cell therapy due to their anatomic, genetic and physiological similarities with humans. The development of fluorescent proteins as molecular tags has allowed investigators to track cell migration and engraftment levels after transplantation. Here we describe the development of two transgenic pig models via SCNT expressing a fusion protein composed of eGFP and porcine Histone 2B (pH2B)...
2017: PloS One
https://www.readbyqxmd.com/read/28078583/generation-and-application-of-bioluminescent-cd95-ligand-fusion-proteins
#5
Isabell Lang, Juliane Kums, Harald Wajant
The quantitative evaluation of the interaction of soluble CD95L with CD95 is not only important for a detailed understanding of CD95 biology but is also of special relevance for the characterization and development of inhibitors of this interaction. The assembly of a CD95L-CD95 complex capable to recruit intracellular factors not only involves pre-assembly of CD95 molecules in the absence of CD95L but is also modulated by cellular factors such as interaction with the actin cytoskeleton and plasma membrane compartmentation of CD95...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28078508/prioritization-of-liver-mri-for-distinguishing-focal-lesions
#6
Qinghua Su, Shusheng Bi, Xuedong Yang
Liver cancer is one of the leading causes of cancer-related mortality worldwide. Magnetic resonance imaging (MRI) is a non-invasive imaging technique that is often used by radiologists for diagnosis and surgical planning. Analysis of a large amount of liver MRI data for each patient limits the radiologist's efficiency and may lead to misdiagnoses. The redundant MRI data, especially from dynamic contrast enhanced (DCE) sequences, is also a bottleneck in transmitting the images via the internet or PACS for remote consultancy in a reasonable amount of time...
January 4, 2017: Science China. Life Sciences
https://www.readbyqxmd.com/read/28077463/novel-method-for-detection-of-glycogen-in-cells
#7
Alexander V Skurat, Dyann Segvich, Anna A DePaoli-Roach, Peter J Roach
Glycogen, a branched polymer of glucose, functions as an energy reserve in many living organisms. Abnormalities in glycogen metabolism, usually excessive accumulation, can be caused genetically, most often through mutation of the enzymes directly involved in synthesis and degradation of the polymer leading to a variety of glycogen storage diseases (GSDs). Microscopic visualization of glycogen deposits in cells and tissues is important for the study of normal glycogen metabolism as well as diagnosis of GSDs...
January 10, 2017: Glycobiology
https://www.readbyqxmd.com/read/28077299/anaplastic-lymphoma-kinase-alk-inhibitors-in-the-treatment-of-alk-driven-lung-cancers
#8
REVIEW
Robert Roskoski
Anaplastic lymphoma kinase is expressed in two-thirds of the anaplastic large-cell lymphomas as an NPM-ALK fusion protein. Physiological ALK is a receptor protein-tyrosine kinase within the insulin receptor superfamily of proteins that participates in nervous system development. The EML4-ALK fusion protein and four other ALK-fusion proteins play a fundamental role in the development in about 5% of non-small cell lung cancers. The amino-terminal portions of the ALK fusion proteins result in dimerization and subsequent activation of the ALK protein kinase domain that plays a key role in the pathogenesis of various tumors...
January 8, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/28077285/a-fluorophore-fusion-construct-of-human-profilin-i-with-non-compromized-poly-l-proline-binding-capacity-suitable-for-imaging
#9
Michaela Nejedla, Zhilun Li, Anna E Masser, Matteo Biancospino, Matthias Spiess, Sebastian D Mackowiak, Marc R Friedländer, Roger Karlsson
Profilin is vital for actin organization in eukaryotic cells. It controls actin filament formation by binding monomeric actin and numerous proteins involved in polarized actin assembly. Important for the latter is the interaction surface formed by the N- and C-terminal helices, which pack close to each other on one side of the molecule at distance from the actin site and mediate binding to poly-proline sequences present in many of the targeted proteins. Via these interactions profilin contributes to the spatiotemporal control of actin filament growth...
January 7, 2017: Journal of Molecular Biology
https://www.readbyqxmd.com/read/28076788/dynamin-2-stabilizes-the-hiv-1-fusion-pore-with-a-low-oligomeric-state
#10
Daniel M Jones, Luis A Alvarez, Rory Nolan, Margarita Ferriz, Raquel Sainz Urruela, Xènia Massana-Muñoz, Hila Novak-Kotzer, Michael L Dustin, Sergi Padilla-Parra
One of the key research areas surrounding HIV-1 concerns the regulation of the fusion event that occurs between the virus particle and the host cell during entry. Even if it is universally accepted that the large GTPase dynamin-2 is important during HIV-1 entry, its exact role during the first steps of HIV-1 infection is not well characterized. Here, we have utilized a multidisciplinary approach to study the DNM2 role during fusion of HIV-1 in primary resting CD4 T and TZM-bl cells. We have combined advanced light microscopy and functional cell-based assays to experimentally assess the role of dynamin-2 during these processes...
January 10, 2017: Cell Reports
https://www.readbyqxmd.com/read/28076686/small-molecule-hiv-1-entry-inhibitors-targeting-gp120-and-gp41-a-patent-review-2010-2015
#11
Wen Li, Lu Lu, Weihua Li, Shibo Jiang
It is essential to discover and develop small-molecule HIV-1 entry inhibitors with suitable pharmaceutical properties. Areas covered: We review the development of small-molecule HIV-1 entry inhibitors as evidenced in patents, patent applications, and related research articles published between 2010 and 2015. Expert opinion: HIV-1 Env gp120 and gp41 are important targets for development of HIV-1 entry inhibitors. The Phe43 pocket in gp120 and the highly conserved hydrophobic pocket on gp41 NHR-trimer are important targets for identification of HIV-1 attachment and fusion inhibitors, respectively...
January 11, 2017: Expert Opinion on Therapeutic Patents
https://www.readbyqxmd.com/read/28076660/influenza-a-virus-ns1-protein-induced-jnk-activation-and-apoptosis-are-not-functionally-linked
#12
Wolfgang Nacken, Viktor Wixler, Christina Ehrhardt, Stephan Ludwig
Expression of the influenza A virus (IAV) non-structural protein NS1 results in the activation of c-Jun N-terminal kinase (JNK). Both NS1 and JNK are involved in apoptosis induction. To investigate their interrelationship, we stably expressed a tamoxifen inducible NS1 oestrogen receptor fusion-protein (NS1ERT) in mammalian cells. Upon tamoxifen stimulation, NS1ERT expressing cells partially rescued the attenuated replication of NS1-deficient IAVs and also inhibited interferon up-regulation, confirming the functional competence of NS1ERT...
January 11, 2017: Cellular Microbiology
https://www.readbyqxmd.com/read/28076454/a-broad-ph-range-and-processive-chitinase-from-a-metagenome-library
#13
S S Thimoteo, A Glogauer, H Faoro, E M de Souza, L F Huergo, B M Moerschbacher, F O Pedrosa
Chitinases are hydrolases that degrade chitin, a polymer of N-acetylglucosamine linked β(1-4) present in the exoskeleton of crustaceans, insects, nematodes and fungal cell walls. A metagenome fosmid library from a wastewater-contaminated soil was functionally screened for chitinase activity leading to the isolation and identification of a chitinase gene named metachi18A. The metachi18A gene was subcloned and overexpressed in Escherichia coli BL21 and the MetaChi18A chitinase was purified by affinity chromatography as a 6xHis-tagged fusion protein...
January 5, 2017: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/28075487/molecular-analysis-of-gene-rearrangements-and-mutations-in-acute-leukemias-and-myeloid-neoplasms
#14
Lynette M Sholl, Janina Longtine, Frank C Kuo
A subset of acute leukemias and other myeloid neoplasms contains specific genetic alterations, many of which are associated with unique clinical and pathologic features. These alterations include chromosomal rearrangements leading to oncogenic fusion proteins or alteration of gene expression by juxtaposing oncogenes to enhancer elements, as well as mutations leading to aberrant activation of a variety of proteins critical to hematopoietic progenitor cell proliferation and differentiation. Molecular analysis is central to diagnosis and clinical management of leukemias, permitting genetic confirmation of a clinical and histologic impression, providing prognostic and predictive information, and facilitating detection of minimal residual disease...
January 11, 2017: Current Protocols in Human Genetics
https://www.readbyqxmd.com/read/28075463/expression-of-the-promyelocytic-leukemia-protein-without-the-nuclear-localization-signal-as-a-novel-diagnostic-marker-for-acute-promyelocytic-leukemia
#15
Ting Xu, Xiao-Qun Yang, Kai-Ling Jiang, Hui Wang, Peng-Peng Ma, Liang Zhong, Bei-Zhong Liu
Promyelocytic leukemia-retinoic acid receptor α (PML-RARα) is a fusion protein generated by the t(15;17)(q22;q12) translocation associated with acute promyelocytic leukemia (APL). PML-RARα is cleaved by neutrophil elastase, an early myeloid-specific serine protease, leading to translocation of the nuclear localization signal (NLS) of the PML protein to the N-terminal of RARα, and the mutational product PML(NLS-). The present study was designed to analyze the role of the NLS in mediating PML transport into the nucleus and to evaluate the value of measuring NLS translocation in the early diagnosis of APL...
January 9, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28073897/identification-of-alk-ros1-and-ret-fusions-by-a-multiplexed-mrna-based-assay-in-formalin-fixed-paraffin-embedded-samples-from-advanced-non-small-cell-lung-cancer-patients
#16
Noemí Reguart, Cristina Teixidó, Ana Giménez-Capitán, Laia Paré, Patricia Galván, Santiago Viteri, Sonia Rodríguez, Vicente Peg, Erika Aldeguer, Nuria Viñolas, Jordi Remon, Niki Karachaliou, Esther Conde, Fernando Lopez-Rios, Ernest Nadal, Sabine Merkelbach-Bruse, Reinhard Büttner, Rafael Rosell, Miguel A Molina-Vila, Aleix Prat
BACKGROUND: Anaplastic lymphoma receptor tyrosine kinase (ALK), ROS protooncogene 1, receptor tyrosine kinase (ROS1), and ret protooncogene (RET) fusions are present in 5%-7% of patients with advanced non-small-cell lung cancer (NSCLC); their accurate identification is critical to guide targeted therapies. FISH and immunohistochemistry (IHC) are considered the gold standards to determine gene fusions, they have limitations. The nCounter platform is a potentially useful genomic tool for multiplexed detection of gene fusions, but has not been validated in the clinical setting...
January 10, 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/28073421/-research-advances-in-the-role-of-sphingolipids-in-hcv-and-hbv-life-cycles
#17
J Y Zhang, Z P Duan, J L Zhang, S J Zheng
Sphingolipids and their metabolites are not only important structural molecules of the cell membrane, but also involved in all phases of viral life cycle, including cell adhesion, membrane fusion, viral replication, viral assembly, intracellular transport, protein sorting, and exocytosis. In recent years, sphingolipids have become one of the focuses of lipid research. This article reviews the role of sphingolipids in the life cycles of hepatitis C virus and hepatitis B virus with reference to recent research achievements in China and foreign countries...
December 20, 2016: Zhonghua Gan Zang Bing za Zhi, Zhonghua Ganzangbing Zazhi, Chinese Journal of Hepatology
https://www.readbyqxmd.com/read/28072974/-clinicopathologic-features-of-mammary-analogue-secretory-carcinoma-of-salivary-glands
#18
X P Zhang, H Ni, X Wang, H Chen, S S Shi, B Yu, X J Zhou, Q Rao
Objective: To investigate the clinicopathological features of mammary analogue secretory carcinoma (MASC) of salivary glands, and its diagnosis, differential diagnosis, immunohistochemistry and molecular pathology. Methods: Seventeen cases of MASC were enrolled, with 9 cases of salivary acinar cell carcinoma and 18 cases of adenoid cystic carcinoma as control groups from Nanjing General Hospital from 1997 to 2014 were included in this retrospective study, combined with immunohistochemistry and molecular detection of ETV6-NTRK3 gene fusion...
January 8, 2017: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
https://www.readbyqxmd.com/read/28072709/tranexamic-acid-reduces-perioperative-blood-loss-of-posterior-lumbar-surgery-for-stenosis-or-spondylolisthesis-a-randomized-trial
#19
Houyin Shi, Yunsheng Ou, Dianming Jiang, Zhengxue Quan, Zenghui Zhao, Yong Zhu
BACKGROUND: A prospective, randomized, double-blind, placebo-controlled study was performed. The routine usage of TA in spinal surgery is controversial. Only a few studies have focused on patients undergoing posterior lumbar surgery for stenosis or spondylolisthesis, although a large clinical cohort exists in the population. This study aimed to evaluate the effect and safety of TA in reducing perioperative blood loss in posterior lumbar surgery for stenosis or spondylolisthesis. METHODS: 100 eligible patients out of 126 were randomized to receive either a bolus dose of 30 mg/kg TA i...
January 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28071819/evidence-that-interfibrillar-load-transfer-in-tendon-is-supported-by-small-diameter-fibrils-and-not-extrafibrillar-tissue-components
#20
Spencer E Szczesny, Kristen L Fetchko, George R Dodge, Dawn M Elliott
Collagen fibrils in tendon are believed to be discontinuous and transfer tensile loads through shear forces generated during interfibrillar sliding. However, the structures that transmit these interfibrillar forces are unknown. Various extrafibrillar tissue components (e.g., glycosaminoglycans, collagens XII and XIV) have been suggested to transmit interfibrillar loads by bridging collagen fibrils. Alternatively, collagen fibrils may interact directly through physical fusions and interfibrillar branching. The objective of this study was to test whether extrafibrillar proteins are necessary to transmit load between collagen fibrils or if interfibrillar load transfer is accomplished directly by the fibrils themselves...
January 10, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
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