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Calreticulin

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https://www.readbyqxmd.com/read/28428881/nano-pulse-stimulation-is-a-physical-modality-that-can-trigger-immunogenic-tumor-cell-death
#1
Richard Nuccitelli, Amanda McDaniel, Snjezana Anand, John Cha, Zachary Mallon, Jon Casey Berridge, Darrin Uecker
BACKGROUND: We have been developing a non-thermal, drug-free tumor therapy called Nano-Pulse Stimulation (NPS) that delivers ultrashort electric pulses to tumor cells which eliminates the tumor and inhibits secondary tumor growth. We hypothesized that the mechanism for inhibiting secondary tumor growth involves stimulating an adaptive immune response via an immunogenic form of apoptosis, commonly known as immunogenic cell death (ICD). ICD is characterized by the emission of danger-associated molecular patterns (DAMPs) that serve to recruit immune cells to the site of the tumor...
2017: Journal for Immunotherapy of Cancer
https://www.readbyqxmd.com/read/28425917/tapbpr-bridges-udp-glucose-glycoprotein-glucosyltransferase-1-onto-mhc-class-i-to-provide-quality-control-in-the-antigen-presentation-pathway
#2
Andreas Neerincx, Clemens Hermann, Robin Antrobus, Andy van Hateren, Huan Cao, Nico Trautwein, Stefan Stevanović, Tim Elliott, Janet E Deane, Louise H Boyle
Recently we revealed that TAPBPR is a peptide exchange catalyst important for optimal peptide selection by MHC class I molecules. Here we asked if any other co-factors associate with TAPBPR which would explain its effect on peptide selection. We identify an interaction between TAPBPR and UDP-glucose:glycoprotein glucosyltransferase 1 (UGT1), a folding sensor in the calnexin/calreticulin quality control cycle known to regenerate the Glc1Man9GlcNAc2 moiety on glycoproteins. Our results suggest the formation of a multimeric complex, dependent on a conserved cysteine at position 94 in TAPBPR, in which TAPBPR promotes the association of UGT1 with peptide-receptive class I molecules...
April 20, 2017: ELife
https://www.readbyqxmd.com/read/28423550/quantitative-proteomic-analysis-of-gastric-cancer-tissue-reveals-novel-proteins-in-platelet-derived-growth-factor-b-signaling-pathway
#3
Fang Liu, Yuan Zhang, Tingting Men, Xingyue Jiang, Chunhua Yang, He Li, Xiaodan Wei, Dong Yan, Gangming Feng, Jianke Yang, Jonas Bergquist, Bin Wang, Wenguo Jiang, Jia Mi, Geng Tian
Gastric cancer is one of the most common cancers in Asian countries. Searching for reliable biomarkers involving the development of gastric cancer is important for clinical practice. Quantitative proteomics has become an important method contributed to the discovery of novel diagnostic or therapeutic targets for the management of cancer. Here, we identified differently expressed proteins in gastric cancer and normal gastric tissues by using the high resolution mass spectrometer. Among the total of 2280 identified proteins, 87 were differentially expressed between gastric cancer and normal gastric tissues...
March 28, 2017: Oncotarget
https://www.readbyqxmd.com/read/28419579/erdj3-has-an-essential-role-for-z-variant-alpha-1-antitrypsin-degradation
#4
Nazli Khodayari, George Marek, Yuanqing Lu, Karina Krotova, Rejean Liqun Wang, Mark Brantly
Alpha-1-antitrypsin deficiency (AATD) is an inherited disease characterized by emphysema and liver disease. AATD is most often caused by a single amino acid substitution at amino acid 342 in the mature protein, resulting in the Z mutation of the alpha-1-antitrypsin gene (ZAAT). This substitution is associated with misfolding and accumulation of ZAAT in the endoplasmic reticulum (ER) of hepatocytes and monocytes, causing a toxic gain of function. Retained ZAAT is eliminated by ER-associated degradation and autophagy...
April 17, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28417942/protein-discovery-combined-transcriptomic-and-proteomic-analyses-of-venom-from-the-endoparasitoid-cotesia-chilonis-hymenoptera-braconidae
#5
Zi-Wen Teng, Shi-Jiao Xiong, Gang Xu, Shi-Yu Gan, Xuan Chen, David Stanley, Zhi-Chao Yan, Gong-Yin Ye, Qi Fang
Many species of endoparasitoid wasps provide biological control services in agroecosystems. Although there is a great deal of information on the ecology and physiology of host/parasitoid interactions, relatively little is known about the protein composition of venom and how specific venom proteins influence physiological systems within host insects. This is a crucial gap in our knowledge because venom proteins act in modulating host physiology in ways that favor parasitoid development. Here, we identified 37 possible venom proteins from the polydnavirus-carrying endoparasitoid Cotesia chilonis by combining transcriptomic and proteomic analyses...
April 12, 2017: Toxins
https://www.readbyqxmd.com/read/28416397/monitoring-thermal-and-chemical-unfolding-of-brugia-malayi-calreticulin-using-fluorescence-and-circular-dichroism-spectroscopy
#6
Sunita Yadav, Smita Gupta, Jitendra Kumar Saxena
Calreticulin of Brugia malayi (BmCRT) play very important role in host-parasite interaction. In previous study it was found that BmCRT is responsible for prevention of host classical complement pathway activation via its interaction with first component C1q of the human host. Therefore, BmCRT is an essential protein for parasite survival and an important drug target to fend filariasis. In the present study, we have carried out a systamatic biophysical characterization of BmCRT protein. Unfolding of BmCRT was found to be non-cooperative two-state process in the presence of both denaturant GdmCl and urea...
April 14, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28415571/increased-b-cell-activation-is-present-in-jak2v617f-mutated-calr-mutated-and-triple-negative-essential-thrombocythemia
#7
Ken-Hong Lim, Caleb Gon-Shen Chen, Yu-Cheng Chang, Yi-Hao Chiang, Chen-Wei Kao, Wei-Ting Wang, Chiao-Yi Chang, Ling Huang, Ching-Sung Lin, Chun-Chia Cheng, Hung-I Cheng, Nai-Wen Su, Johnson Lin, Yi-Fang Chang, Ming-Chih Chang, Ruey-Kuen Hsieh, Huan-Chau Lin, Yuan-Yeh Kuo
Essential thrombocythemia (ET) is a BCL-ABL1-negative myeloproliferative neoplasm. We have reported that increased activated B cells can facilitate platelet production mediated by cytokines regardless JAK2 mutational status in ET. Recently, calreticulin (CALR) mutations were discovered in ~30% JAK2/MPL-unmutated ET and primary myelofibrosis. Here we sought to screen for CALR mutations and to evaluate B cell immune profiles in a cohort of adult Taiwanese ET patients. B cell populations, granulocytes/monocytes membrane-bound B cell-activating factor (mBAFF) levels, B cells toll-like receptor 4 (TLR4) expression and intracellular levels of interleukin (IL)-1β/IL-6 and the expression of CD69, CD80, and CD86 were quantified by flow cytometry...
March 18, 2017: Oncotarget
https://www.readbyqxmd.com/read/28413486/cigarette-smoke-extract-promotes-proliferation-of-airway-smooth-muscle-cells-through-suppressing-c-ebp-%C3%AE-expression
#8
Pin Guan, Wentao Cai, Huapeng Yu, Zhiyong Wu, Wei Li, Jie Wu, Juan Chen, Guangqiu Feng
Cigarette smoke has been considered a major contributor to the pathogenesis of chronic obstructive pulmonary disease (COPD). In COPD patients, the airway smooth muscle layer has been observed to be markedly thickened and the proliferation of airway smooth muscle cells (ASMCs) was therefore used by the present study as a model to assess the impact of cigarette smoke extract (CSE). ASMCs were exposed to various concentrations of CSE and the proliferation of the cells was analyzed by an MTT assay. Furthermore, the expression levels of calreticulin and CCAAT/enhancer-binding protein alpha (C/EBP-α) in CSE-stimulated ASMCs were determined by polymerase chain reaction and western blot analyses...
April 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28411309/calreticulin-mutations-in-bulgarian-mpn-patients
#9
Ivan Pavlov, Evgueniy Hadjiev, Tzvetan Alaikov, Sylva Spassova, Angel Stoimenov, Elissaveta Naumova, Velizar Shivarov, Milena Ivanova
Somatic mutations in JAK2, MPL and CALR are recurrently identified in most of the cases with Philadelphia chromosome negative myeloproliferative neoplasms (MPNs). We applied four molecular genetic methods for identification of CALR exon 9 mutations, including high resolution melt (HRM) analysis, Sanger sequencing, semiconductor target genes sequencing and whole exome sequencing. A total of 78 patients with myeloid malignancies were included in the study. We identified 14 CALR exon 9 mutated cases out of 78 studied patients with myeloid malignancies...
April 14, 2017: Pathology Oncology Research: POR
https://www.readbyqxmd.com/read/28408900/the-thrombopoietin-receptor-structural-basis-of-traffic-and-activation-by-ligand-mutations-agonists-and-mutated-calreticulin
#10
REVIEW
Leila N Varghese, Jean-Philippe Defour, Christian Pecquet, Stefan N Constantinescu
A well-functioning hematopoietic system requires a certain robustness and flexibility to maintain appropriate quantities of functional mature blood cells, such as red blood cells and platelets. This review focuses on the cytokine receptor that plays a significant role in thrombopoiesis: the receptor for thrombopoietin (TPO-R; also known as MPL). Here, we survey the work to date to understand how this receptor functions at a molecular level throughout its lifecycle, from traffic to the cell surface, dimerization and binding cognate cytokine via its extracellular domain, through to its subsequent activation of associated Janus kinases and initiation of downstream signaling pathways, as well as the regulation of these processes...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28405522/calreticulin-and-type-i-interferon-an-unsuspected-connection
#11
EDITORIAL
Lorenzo Galluzzi, Guido Kroemer
No abstract text is available yet for this article.
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28401568/a-secreted-chitinase-like-protein-osclp-supports-root-growth-through-calcium-signaling-in-oryza-sativa
#12
Jingni Wu, Yiming Wang, Sang Gon Kim, Ki-Hong Jung, Ravi Gupta, Joonyup Kim, Younghoon Park, Kyu Young Kang, Sun Tae Kim
Chitinases belong to a conserved protein family and play multiple roles in defense, development, and growth regulation in plants. Here, we identified a secreted chitinase-like protein, OsCLP, which functions in rice growth. A T-DNA insertion mutant of OsCLP (osclp) showed significant retardation of root and shoot growth. A comparative proteomic analysis was carried out using root tissue of wild-type and the osclp mutant to understand the OsCLP-mediated rice growth retardation. Results obtained revealed that proteins related to glycolysis (phosphoglycerate kinase), stress adaption (chaperonin) and calcium signaling (calreticulin and CDPK1) were differentially regulated in osclp roots...
April 12, 2017: Physiologia Plantarum
https://www.readbyqxmd.com/read/28389256/impact-of-molecular-genetics-on-outcome-in-myelofibrosis-patients-after-allogeneic-stem-cell-transplantation
#13
Nicolaus Kröger, Victoria Panagiota, Anita Badbaran, Tatjana Zabelina, Ioanna Triviai, Michelle Maria Araujo Cruz, Rabia Shahswar, Francis Ayuk, Marten Gehlhaar, Christine Wolschke, Robin Bollin, Carolin Walter, Martin Dugas, Lutz Wiehlmann, Ulrich Lehmann, Christian Koenecke, Anuhar Chaturvedi, Haefaa Alchalby, Michael Stadler, Matthias Eder, Max Christopeit, Gudrun Göhring, Michael Koenigsmann, Brigitte Schlegelberger, Hans-Heinrich Kreipe, Arnold Ganser, Carol Stocking, Boris Fehse, Felicitas Thol, Michael Heuser
Molecular genetics may influence outcome for patients with myelofibrosis. To determine the impact of molecular genetics on outcome after allogeneic stem cell transplantation, we screened 169 patients with primary myelofibrosis (n = 110), post-ET/PV myelofibrosis (n = 46), and myelofibrosis in transformation (n = 13) for mutations in 16 frequently mutated genes. The most frequent mutation was JAK2V617F (n = 101) followed by ASXL1 (n = 49), calreticulin (n = 34), SRSF2 (n = 16), TET2 (n = 10), U2AF1 (n = 11), EZH2 (n = 7), MPL (n = 6), IDH2 (n = 5), IDH1 (n = 4), and CBL (n = 1)...
April 4, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/28385780/enhanced-calreticulin-expression-in-red-cells-of-polycythemia-vera-patients-harboring-the-jak2v617f-mutation
#14
Mégane Brusson, Sylvie Cochet, Marjorie Leduc, François Guillonneau, Patrick Mayeux, Thierry Peyrard, Christine Chomienne, Caroline Le Van Kim, Bruno Cassinat, Jean-Jacques Kiladjian, Wassim El Nemer
No abstract text is available yet for this article.
April 6, 2017: Haematologica
https://www.readbyqxmd.com/read/28381690/18f-fdg-pet-ct-is-effective-in-distinguishing-myelofibrosis-due-to-bone-marrow-infiltration-of-diffuse-large-b-cell-lymphoma-from-triple-negative-primary-myelofibrosis
#15
Takuma Kumagai, Yoko Satoh, Megumi Koshiishi, Saori Ooishi, Yuki Sueki, Kei Nakajima, Toru Mitsumori, Keita Kirito
Although myelofibrosis is mainly associated with myeloproliferative neoplasms (MPN), especially primary myelofibrosis (PMF), a variety of hematological malignancies, including acute myeloid leukemia, multiple myeloma and malignant lymphoma, also cause myelofibrosis with markedly varying degrees of severity. Thus, it is extremely important to accurately diagnose the underlying diseases that cause fibrosis in bone marrow. Analyses of JAK2, MPL and calreticulin gene mutations are useful for distinguishing MPN from other diseases, since 90% of MPN patients have a mutation in one of these genes...
2017: [Rinshō Ketsueki] the Japanese Journal of Clinical Hematology
https://www.readbyqxmd.com/read/28363247/gene-delivery-of-calreticulin-anti-angiogenic-domain-attenuates-the-development-of-choroidal-neovascularization-in-rats
#16
Youn-Shen Bee, Leilei Tu, Shwu-Jiuan Sheu, Hsiu-Chen Lin, Jia-Hua Tang, Jiang-Hui Wang, Selwyn M Prea, Gregory J Dusting, Deng-Chyang Wu, Jingxiang Zhong, Bang V Bui, Ming-Hong Tai, Guei-Sheung Liu
Choroidal neovascularization (CNV) is a common pathological feature in neovascular age-related macular degeneration which is the leading cause of vision loss amongst elderly populations in developed countries. In this study, we evaluated the effect of a novel endogenous inhibitor of angiogenesis, calreticulin anti-angiogenic domain (CAD), subconjunctivally delivered by an adenoviral vector (Ad-CAD) in a rat model of laser-induced CNV. CAD was expressed in Ad-CAD infected cells and inhibited the angiogenic activity in human umbilical vein endothelial cells in vitro...
March 31, 2017: Human Gene Therapy
https://www.readbyqxmd.com/read/28345021/oncolytic-group-b-adenovirus-enadenotucirev-mediates-non-apoptotic-cell-death-with-membrane-disruption-and-release-of-inflammatory-mediators
#17
Arthur Dyer, Ying Di, Hugo Calderon, Sam Illingworth, Gray Kueberuwa, Alison Tedcastle, Phil Jakeman, Suet Lin Chia, Alice Brown, Michael A Silva, David Barlow, John Beadle, Terry Hermiston, David J P Ferguson, Brian Champion, Kerry D Fisher, Leonard W Seymour
Enadenotucirev (EnAd) is a chimeric group B adenovirus isolated by bioselection from a library of adenovirus serotypes. It replicates selectively in and kills a diverse range of carcinoma cells, shows effective anticancer activity in preclinical systems, and is currently undergoing phase I/II clinical trials. EnAd kills cells more quickly than type 5 adenovirus, and speed of cytotoxicity is dose dependent. The EnAd death pathway does not involve p53, is predominantly caspase independent, and appears to involve a rapid fall in cellular ATP...
March 17, 2017: Molecular Therapy Oncolytics
https://www.readbyqxmd.com/read/28340692/calr-gene-mutational-profile-in-myeloproliferative-neoplasms-with-non-mutated-jak2-in-moroccan-patients-a-case-series-and-germline-in-frame-deletion
#18
W Smaili, Y Doubaj, F Z Laarabi, J Lyahyai, M Kerbout, M Mikdame, A Sefiani
BACKGROUND: The discovery of somatic mutations within the gene encoding calreticulin (CALR) in 2013 represented a major milestone in the molecular diagnosis of BCR-ABL negative myeloproliferative neoplasms (MPN). In fact, exome sequencing revealed that most patients with essential thrombocythemia (ET) or primary myelofibrosis (PMF) lacking JAK2 or MPL mutations, harbor somatic insertion and/or deletion in exon 9 of CALR gene. In this study, we identified the first CALR gene mutational landscape in Moroccan patients with MPN nonmutated for the JAK2 gene...
January 2017: Current Research in Translational Medicine
https://www.readbyqxmd.com/read/28339788/intravenous-dendritic-cell-administration-enhances-suppression-of-lung-metastasis-induced-by-carbon-ion-irradiation
#19
Ken Ando, Hidetoshi Fujita, Akihiro Hosoi, Liqiu Ma, Masaru Wakatsuki, Ken-Ichiro Seino, Kazuhiro Kakimi, Takashi Imai, Takashi Shimokawa, Takashi Nakano
Carbon-ion radiotherapy (CIRT) is an advanced radiotherapy and has achieved good local control, even in tumors that are resistant to conventional photon beam radiotherapy (PBRT). However, distant metastasis control is an important issue. Recently, the combination of radiotherapy and immunotherapy has attracted the attention. In immunotherapy, dendritic cells (DCs) play a pivotal role in the anti-tumor immune system. However, the mechanisms underlying the combination therapy of DCs and radiotherapy have been unclear...
February 27, 2017: Journal of Radiation Research
https://www.readbyqxmd.com/read/28327546/missense-mutations-near-the-n-glycosylation-site-of-the-a2-domain-lead-to-various-intracellular-trafficking-defects-in-coagulation-factor-viii
#20
Wei Wei, Chunlei Zheng, Min Zhu, Xiaofan Zhu, Renchi Yang, Saurav Misra, Bin Zhang
Missense mutation is the most common mutation type in hemophilia. However, the majority of missense mutations remain uncharacterized. Here we characterize how hemophilia mutations near the unused N-glycosylation site of the A2 domain (N582) of FVIII affect protein conformation and intracellular trafficking. N582 is located in the middle of a short 310-helical turn (D580-S584), in which most amino acids have multiple hemophilia mutations. All 14 missense mutations found in this 310-helix reduced secretion levels of the A2 domain and full-length FVIII...
March 22, 2017: Scientific Reports
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