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https://www.readbyqxmd.com/read/28646649/two-single-mutations-in-the-fusion-protein-of-newcastle-disease-virus-confer-hemagglutinin-neuraminidase-independent-fusion-promotion-and-attenuate-the-pathogenicity-in-chickens
#1
Yanhong Ji, Tao Liu, Yane Jia, Bin Liu, Qingzhong Yu, Xiaole Cui, Fengfeng Guo, Huiyun Chang, Qiyun Zhu
The fusion (F) protein of Newcastle disease virus (NDV) affects viral infection and pathogenicity through mediating membrane fusion. Previously, we found NDV with increased fusogenic activity in which contained T458D or G459D mutation in the F protein. Here, we investigated the effects of these two mutations on viral infection, fusogenicity and pathogenicity. Syncytium formation assays indicated that T458D or G459D increased the F protein cleavage activity and enhanced cell fusion with or without the presence of HN protein...
June 21, 2017: Virology
https://www.readbyqxmd.com/read/28646367/ifn%C3%AE-producing-cd4-t-lymphocytes-the-double-edged-swords-in-tuberculosis
#2
Pawan Kumar
IFNγ-producing CD4(+) T cells (IFNγ(+)CD4(+) T cells) are the key orchestrators of protective immunity against Mycobacterium tuberculosis (Mtb). Primarily, these cells act by enabling Mtb-infected macrophages to enforce phagosome-lysosome fusion, produce reactive nitrogen intermediates (RNIs), and activate autophagy pathways. However, TB is a heterogeneous disease and a host of clinical and experimental findings has also implicated IFNγ(+)CD4(+) T cells in TB pathogenesis. High frequency of IFNγ(+)CD4(+) T cells is the most invariable feature of the active disease...
December 2017: Clinical and Translational Medicine
https://www.readbyqxmd.com/read/28646116/tonic-b-cell-receptor-signaling-in-diffuse-large-b-cell-lymphoma
#3
Ondrej Havranek, Jingda Xu, Stefan Köhrer, Zhiqiang Wang, Lisa Becker, Justin M Comer, Jared Henderson, Wencai Ma, John Man Chun Ma, Jason R Westin, Dipanjan Ghosh, Nicholas Shinners, Luhong Sun, Allen F Yi, Anusha R Karri, Jan A Burger, Tomasz Zal, R Eric Davis
We used CRISPR/Cas9-mediated genomic modification to investigate B-cell receptor (BCR) signaling in cell lines of diffuse large B-cell lymphoma (DLBCL). Three manipulations that altered BCR genes without affecting surface BCR levels showed that BCR signaling differs between the germinal center B-cell (GCB) subtype, which is insensitive to BTK inhibition by ibrutinib, and the activated B-cell (ABC) subtype. Replacing antigen-binding BCR regions had no effect on BCR signaling in GCB-DLBCL lines, reflecting this subtype's exclusive use of tonic BCR signaling...
June 23, 2017: Blood
https://www.readbyqxmd.com/read/28645896/nucleotide-dependent-farnesyl-switch-orchestrates-polymerization-and-membrane-binding-of-human-guanylate-binding-protein-1
#4
Sergii Shydlovskyi, Anke Y Zienert, Semra Ince, Christine Dovengerds, Annika Hohendahl, Julia M Dargazanli, Ailisa Blum, Saskia D Günther, Nikolay Kladt, Michael Stürzl, Astrid C Schauss, Miriam Kutsch, Aurélien Roux, Gerrit J K Praefcke, Christian Herrmann
Dynamin-like proteins (DLPs) mediate various membrane fusion and fission processes within the cell, which often require the polymerization of DLPs. An IFN-inducible family of DLPs, the guanylate-binding proteins (GBPs), is involved in antimicrobial and antiviral responses within the cell. Human guanylate-binding protein 1 (hGBP1), the founding member of GBPs, is also engaged in the regulation of cell adhesion and migration. Here, we show how the GTPase cycle of farnesylated hGBP1 (hGBP1F) regulates its self-assembly and membrane interaction...
June 23, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28645808/primary-undifferentiated-small-round-cell-sarcoma-of-the-deep-abdominal-wall-with-a-novel-variant-of-t-10-19-cic-dux4-gene-fusion
#5
Yoshitane Tsukamoto, Hiroyuki Futani, Shinichi Yoshiya, Takahiro Watanabe, Takako Kihara, Shohei Matsuo, Seiichi Hirota
We experienced a 38-year-old Japanese male with t(10;19) CIC-DUX4 -positive undifferentiated small round cell sarcoma in the deep abdominal wall. Three months before his first visit to our hospital, he noticed a mass in his right abdominal wall. Computed tomography on admission revealed a solid abdominal tumor 70×53mm in size and multiple small tumors in both lungs. The biopsy of the abdominal tumor revealed undifferentiated small round cell sarcoma, suggestive of Ewing sarcoma. Under the clinical diagnosis of Ewing-like sarcoma of the abdominal wall with multiple lung metastases, several cycles of ICE (ifosfamide, carboplatin and etoposide) therapy were performed...
June 6, 2017: Pathology, Research and Practice
https://www.readbyqxmd.com/read/28645189/the-potential-role-of-retinoic-acid-receptor-%C3%AE-on-glomerulosclerosis-in-rats-and-podocytes-injury-is-associated-with-the-induction-of-mmp2-and-mmp9
#6
Xiuping Chen, Yuanhan Qin, Tianbiao Zhou, Ling Jiang, Fengying Lei, He Qin, Lei Zhang, Zhiqiang Zhou
Retinoic acid receptor α (RARα) plays a crucial role in kidney disease. However, the underlying mechanisms in glomerulosclerosis (GS) is still not clear. The roles of RARα in an adriamycin (ADR)-induced GS rat model and in ADR-induced podocyte injury in vitro were investigated. RARα was over-expressed in GS rats, and serum, urine and kidney samples were collected to detect the induction of the expression of the receptor. RARα expression was inhibited and/or over-expressed in cultured podocytes following injury, as demonstrated by morphometric assays, cell toxicity, and matrix metalloproteinase (MMP) enzymatic activity...
June 22, 2017: Acta Biochimica et Biophysica Sinica
https://www.readbyqxmd.com/read/28645115/a-comprehensive-review-of-heregulins-her3-and-her4-as-potential-therapeutic-targets-in-cancer
#7
REVIEW
Jose Mauricio Mota, Katharine Ann Collier, Ricardo Lima Barros Costa, Timothy Taxter, Aparna Kalyan, Caio A Leite, Young Kwang Chae, Francis J Giles, Benedito A Carneiro
Heregulins (HRGs) bind to the receptors HER3 or HER4, induce receptor dimerization, and trigger downstream signaling that leads to tumor progression and resistance to targeted therapies. Increased expression of HRGs has been associated with worse clinical prognosis; therefore, attempts to block HRG-dependent tumor growth have been pursued. This manuscript summarizes the function and signaling of HRGs and review the preclinical evidence of its involvement in carcinogenesis, prognosis, and treatment resistance in several malignancies such as colorectal cancer, non-small cell lung cancer, ovarian cancer, and breast cancer...
June 13, 2017: Oncotarget
https://www.readbyqxmd.com/read/28644752/expression-and-purification-of-swine-rag2-in-e-coli-for-production-of-porcine-rag2-polyclonal-antibodies
#8
Yu-Bei Jin, Wen-Tao Yang, Ke-Yan Huang, Hong-Liang Chen, Seria-Masole Shonyela, Jing Liu, Qiong Liu, Bo Feng, You Zhou, Shu-Li Zhi, Yan-Long Jiang, Jian-Zhong Wang, Hai-Bin Huang, Chun-Wei Shi, Gui-Lian Yang, Chun-Feng Wang
Recombination activating gene 2 (RAG2) is necessary for immature B cell differentiation. Antibodies to human and rabbit RAG2 are currently commercially available, but antibodies to swine RAG remain unavailable to date. In this study, the swine RAG2 genes sequence was synthesized and then cloned into a pET-28a vector. The recombinant fusion protein was successfully expressed in E. coli, purified through nickel column chromatography, and further digested with Tobacco Etch Virus protease. The cleaved protein was purified by molecular-exclusion chromatography and named pRAG2...
June 23, 2017: Bioscience, Biotechnology, and Biochemistry
https://www.readbyqxmd.com/read/28644725/quantifying-structural-modifications-of-gills-of-two-fish-species-astyanax-altiparanae-lambari-and-prochilodus-lineatus-curimbat%C3%A3-after-exposure-to-biodegradable-detergents-in-urban-lake-water
#9
Bruno Fiorelini Pereira, Anderson Luis Alves, José Augusto Senhorini, Priscilla Hakime Scalize, Fellipe Augusto Tocchini De Figueiredo, Dimítrius Leonardo Pitol, Flávio Henrique Caetano
Anthropic actions in rivers and urban lakes are a cause for concern to our ecosystem. The effects on fauna and flora of substances discharged into waterways have become a focus for investigations globally. Biodegradable detergents are widely used in residences and small industries, but little is known regarding the consequences on fish fauna. The objective of the present study was to identify modifications in gill structure in two fish species, Astyanax altiparanae and Prochilodus lineatus, after treatment with water obtained from an urban lake and an exposure to 1 ppm diluted biodegradable detergents (linear alkylbenzene sulfonate)...
June 23, 2017: Journal of Toxicology and Environmental Health. Part A
https://www.readbyqxmd.com/read/28644472/placing-and-shaping-liposomes-with-reconfigurable-dna-nanocages
#10
Zhao Zhang, Yang Yang, Frederic Pincet, Marc C Llaguno, Chenxiang Lin
The diverse structure and regulated deformation of lipid bilayer membranes are among a cell's most fascinating features. Artificial membrane-bound vesicles, known as liposomes, are versatile tools for modelling biological membranes and delivering foreign objects to cells. To fully mimic the complexity of cell membranes and optimize the efficiency of delivery vesicles, controlling liposome shape (both statically and dynamically) is of utmost importance. Here we report the assembly, arrangement and remodelling of liposomes with designer geometry: all of which are exquisitely controlled by a set of modular, reconfigurable DNA nanocages...
June 23, 2017: Nature Chemistry
https://www.readbyqxmd.com/read/28644187/perioperative-blood-management-in-pediatric-spine-surgery
#11
Matthew E Oetgen, Jody Litrenta
Blood management strategies are integral to successful outcomes in many types of orthopaedic surgery. These strategies minimize blood loss and transfusion requirements, ultimately decreasing complications, improving outcomes, and potentially eliminating risks associated with allogeneic transfusion. Practices to achieve these goals include preoperative evaluation and optimization of hemoglobin, the use of pharmacologic agents or anesthetic methods, intraoperative techniques to improve hemostasis and cell salvage, and the use of predonated autologous blood...
July 2017: Journal of the American Academy of Orthopaedic Surgeons
https://www.readbyqxmd.com/read/28643920/analysis-of-polycaprolactone-scaffolds-fabricated-via-precision-extrusion-deposition-for-control-of-craniofacial-tissue-mineralization
#12
C W Fedore, L Y L Tse, H K Nam, K L Barton, N E Hatch
OBJECTIVES: Recurrence of cranial bone fusion following surgical resection in craniosynostosis patients commonly requires additional surgical procedures. Surgical implantation of engineered 3D scaffolds that control tissue mineralization could be utilized to diminish recurrence of fusion. This study investigated the ability of composite scaffolds to control tissue mineralization when cultured in vitro. SETTING AND SAMPLE POPULATION: Precision-engineered scaffolds with calvarial cells were cultured in vitro at the Department of Orthodontics and Pediatric Dentistry, University of Michigan...
June 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28643917/estrogen-receptor-alpha-mediates-mandibular-condylar-cartilage-growth-in-male-mice
#13
J L Robinson, V Gupta, P Soria, E Clanaman, S Gurbarg, M Xu, J Chen, S Wadhwa
OBJECTIVES: In the appendicular skeleton, estrogen via ERα signalling has been shown to mediate endochondral growth plate fusion in both males and females. However, the role of ERα in mediating growth of the mandibular condylar cartilage is unknown. Thus, this study focuses on the characterization of the mandibular condylar cartilage phenotype in young and adult male ERαKO mice. SETTING: Columbia University Medical Center. MATERIAL AND METHODS: WT and ERαKO C57BL/6 male mice were sacrificed at 49 days or 9 months for phenotypic analysis...
June 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28643791/ewsr1-fusion-proteins-mediate-pax7-expression-in-ewing-sarcoma
#14
Gregory W Charville, Wei-Lien Wang, Davis R Ingram, Angshumoy Roy, Dafydd Thomas, Rajiv M Patel, Jason L Hornick, Matt van de Rijn, Alexander J Lazar
PAX7 is a paired-box transcription factor that is required for the developmental specification of adult skeletal muscle progenitors in mice. We previously demonstrated PAX7 expression as a marker of skeletal muscle differentiation in rhabdomyosarcoma. Here, using analyses of published whole-genome gene expression microarray data, we identify PAX7 as a gene with significantly increased expression in Ewing sarcoma in comparison to CIC-DUX4 round cell sarcoma. Analysis of PAX7 in a large cohort of 103 Ewing sarcoma cases by immunohistochemistry revealed expression in 99...
June 23, 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/28643238/characterization-of-the-complex-involved-in-regulating-v-atpase-activity-of-the-vacuolar-and-endosomal-membrane
#15
REVIEW
Zhenyu Zhang, Xiaojiao Wang, Tangjie Gao, Chunyin Gu, Fubao Sun, Lin Yu, Jinguang Hu
Regulator of the H(+)-ATPase of the vacuolar and endosomal membranes (RAVE) is essential for the reversible assembly of H(+)-ATPase. RAVE primarily consists of three subunits: Rav1p, Rav2p and Skp1p. To characterize these subunits, in this study, four strains derived from Saccharomyces cerevisiae BY4742 were constructed with a FLAG tag on the Rav1p and Rav2p subunits. Then, the corresponding RAVE containing complex was isolated by affinity purification. Western blot and MALDI-TOF mass spectrometry analyses showed that the RAVE complex contains not only the known V1-ATPase subunits (Vma1p and Vma2p) but also a newly found Leu1p that interacts with the RAVE subunit...
June 22, 2017: Journal of Bioenergetics and Biomembranes
https://www.readbyqxmd.com/read/28642154/a-boosting-skin-vaccination-with-dissolving-microneedle-patch-encapsulating-m2e-vaccine-broadens-the-protective-efficacy-of-conventional-influenza-vaccines
#16
Wandi Zhu, Winston Pewin, Chao Wang, Yuan Luo, Gilbert X Gonzalez, Teena Mohan, Mark R Prausnitz, Bao-Zhong Wang
The biodegradable microneedle patch (MNP) is a novel technology for vaccine delivery that could improve the immunogenicity of vaccines. To broaden the protective efficiency of conventional influenza vaccines, a new 4M2e-tFliC fusion protein construct containing M2e sequences from different subtypes was generated. Purified fusion protein was encapsulated into MNPs with a biocompatible polymer for use as a boosting vaccine. The results demonstrated that mice receiving a conventional inactivated vaccine followed by a skin-applied dissolving 4M2e-tFliC MNP boost could better maintain the humoral antibody response than that by the conventional vaccine-prime alone...
June 19, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28641977/a-novel-fluorescent-probe-reveals-starvation-controls-the-commitment-of-amyloid-precursor-protein-to-the-lysosome
#17
Leanne K Hein, Pirjo M Apaja, Kathryn Hattersley, Randall H Grose, Jianling Xie, Christopher G Proud, Timothy J Sargeant
Alzheimer's disease is the most important cause of dementia but there is no therapy that has been demonstrated to stop or slow disease progression. Amyloid precursor protein (APP) is the source of amyloid-β (Aβ), which aggregates in Alzheimer's disease to form toxic oligomeric species. The endo-lysosomal system can clear APP and Aβ from the cell if these molecular species are trafficked through to the lysosome. Currently, there are no easy methods available for the analysis of lysosomal APP trafficking. We therefore generated a fusion protein (tandem-fluorescent, or tf-APP) that allows detection of changes in APP trafficking using accessible techniques such as flow cytometry...
June 19, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28641928/bmpr1a-is-a-major-type-1-bmp-receptor-for-bmp-smad-signaling-during-skull-development
#18
Haichun Pan, Honghao Zhang, Ponnu Abraham, Yoshihiro Komatsu, Karen Lyons, Vesa Kaartinen, Yuji Mishina
Craniosynostosis is caused by premature fusion of one or more sutures in an infant skull, resulting in abnormal facial features. The molecular and cellular mechanisms by which genetic mutations cause craniosynostosis are incompletely characterized, and many of the causative genes for diverse types of syndromic craniosynostosis have not yet been identified. We previously demonstrated that augmentation of BMP signaling mediated by a constitutively active BMP type IA receptor (ca-BmpR1A) in neural crest cells (ca1A hereafter) causes craniosynostosis and superimposition of heterozygous null mutation of Bmpr1a rescues premature suture fusion (ca1A;1aH hereafter)...
June 19, 2017: Developmental Biology
https://www.readbyqxmd.com/read/28641617/-biological-characteristics-and-therapeutic-efficacy-of-103-patients-with-acute-erythroleukemia
#19
Yue Yin, Wen-Qi Zhan, Hui-Fang Huang, Chen-Qing Zhang, Dang-Hui Fu, Shu-Juan Xu, Jian-Da Hu, Xin-Ji Chen
OBJECTIVE: To investigate the biological characteristics and therapeutic efficacyt of acute erythroleukemia (AEL,AML-M6). METHODS: Blood cell count, liver function, lactate dehydrogenase level, coagulation, morphology, immunology, cell genetics and molecular biology were retrospectively analyzed in 103 cases of acute erythroleukemia patients admitted in our department from May 2016 to June 2009. The therapeutic efficacy was observed by means of remission rate, relapse rate, relapse-free survival and overall survival...
June 2017: Zhongguo Shi Yan Xue Ye Xue za Zhi
https://www.readbyqxmd.com/read/28641278/astragaloside-iv-alleviates-heat-induced-inflammation-by-inhibiting-endoplasmic-reticulum-stress-and-autophagy
#20
Zhiwei Dong, Jian Zhou, Ying Zhang, Yajie Chen, Zichen Yang, Guangtao Huang, Yu Chen, Zhiqiang Yuan, Yizhi Peng, Tongtong Cao
BACKGROUND: Thermal injury is the main cause of pulmonary disease in stroke after burn and can be life threatening. Heat-induced inflammation is an important factor that triggers a series of induces pathological changes. However, this mechanism underlying heat-induced inflammation in thermal inhalation injury remains unclear. Studies have revealed that astragaloside-IV (AS-IV), a natural compound extracted from Astragalus membranaceus, has protective effects in inflammatory diseases. Here, we investigated whether the protective effects of AS-IV occur because of the suppression of heat-induced endoplasmic reticulum (ER) stress and excessive autophagy Methods: AS-IV was administered to Wistar rats after thermal inhalation injury and 16HBE140-cells were treated with AS-IV...
June 23, 2017: Cellular Physiology and Biochemistry
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