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https://www.readbyqxmd.com/read/28229927/alteration-of-n-glycan-expression-profile-and-glycan-pattern-of-glycoproteins-in-human-hepatoma-cells-after-hcv-infection
#1
Tian Xiang, Ganglong Yang, Xiaoyu Liu, Yidan Zhou, Zhongxiao Fu, Fangfang Lu, Jianguo Gu, Naoyuki Taniguchi, Zengqi Tan, Xi Chen, Yan Xie, Feng Guan, Xiao-Lian Zhang
BACKGROUND: Hepatitis C virus (HCV) infection causes chronic liver diseases, liver fibrosis and even hepatocellular carcinoma (HCC). However little is known about any information of N-glycan pattern in human liver cell after HCV infection. METHODS: The altered profile of N-glycans in HCV-infected Huh7.5.1 cell were analyzed by using mass spectrometry. Then, lectin microarray, lectin pull-down assay, reverse transcription-quantitative real time PCR (RT-qPCR) and western-blotting were used to identify the altered N-glycosylated proteins and glycosyltransferases...
February 13, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28178326/quantitative-liver-proteomics-identifies-fgf19-targets-that-couple-metabolism-and-proliferation
#2
Vittoria Massafra, Alexandra Milona, Harmjan R Vos, Boudewijn M T Burgering, Saskia W C van Mil
Fibroblast growth factor 19 (FGF19) is a gut-derived peptide hormone that is produced following activation of Farnesoid X Receptor (FXR). FGF19 is secreted and signals to the liver, where it contributes to the homeostasis of bile acid (BA), lipid and carbohydrate metabolism. FGF19 is a promising therapeutic target for the metabolic syndrome and cholestatic diseases, but enthusiasm for its use has been tempered by FGF19-mediated induction of proliferation and hepatocellular carcinoma. To inform future rational design of FGF19-variants, we have conducted temporal quantitative proteomic and gene expression analyses to identify FGF19-targets related to metabolism and proliferation...
2017: PloS One
https://www.readbyqxmd.com/read/28174683/post-translational-modifications-of-annexin-a2-are-linked-to-its-association-with-perinuclear-nonpolysomal-mrnp-complexes
#3
Ingvild Aukrust, Linn Andersen Rosenberg, Mia Madeleine Ankerud, Vibeke Bertelsen, Hanne Hollås, Jaakko Saraste, Ann Kari Grindheim, Anni Vedeler
Various post-translational modifications (PTMs) regulate the localisation and function of the multifunctional protein Annexin A2 (AnxA2). In addition to its various tasks as a cytoskeletal- and membrane-associated protein, AnxA2 can function as a trans-acting protein binding to cis-acting sequences of specific mRNAs. In the present study, we have examined the role of Ser25 phosphorylation in subcellular localisation of AnxA2 and its interaction with mRNP complexes. Subcellular fractionation and confocal microscopy of rat neuroendocrine PC12 cells showed that Ser25-phosphorylated AnxA2 (pSer25AnxA2) is absent from the nucleus and mainly localised to the perinuclear region, evidently associating with both membranes and cytoskeletal elements...
February 2017: FEBS Open Bio
https://www.readbyqxmd.com/read/28166601/mechanisms-of-cellular-activation-in-the-antiphospholipid-syndrome
#4
Nadine Müller-Calleja, Karl J Lackner
It is long known that antiphospholipid antibodies (aPL) induce proinflammatory and procoagulant cellular responses. The underlying signal transduction has been a major focus of research and is the topic of this review. An amazingly heterogeneous panel of signaling pathways has been described and it turns out that at least some of this heterogeneity can be explained by effects of distinct aPL species. On the one hand, there are antibodies against β2-glycoprotein I (β2GPI) which appear to exert their cellular effects only as a complex of β2GPI/anti-β2GPI...
February 6, 2017: Seminars in Thrombosis and Hemostasis
https://www.readbyqxmd.com/read/28152318/hedgehog-signaling-stimulates-tenascin-c-to-promote-invasion-of-pancreatic-ductal-adenocarcinoma-cells-through-annexin-a2
#5
Kelly Foley, Stephen Muth, Elizabeth Jaffee, Lei Zheng
Pancreatic adenocarcinoma (PDA) is characterized by a dense desmoplastic reaction that comprises 60-90% of the tumor, while only 10-40% of the tumor is composed of malignant epithelial cells. This desmoplastic reaction is composed of stromal fibroblast cells, extracellular matrix proteins, and immune cells. Accumulating evidence has suggested that the stromal and epithelial cell compartments interact during the pathogenesis of this disease. Therefore, it is important to identify the signaling pathways responsible for this interaction to better understand the mechanisms by which PDA invades and metastasizes...
February 2, 2017: Cell Adhesion & Migration
https://www.readbyqxmd.com/read/28130864/complex-roles-of-annexin-a2-in-host-blood-brain-barrier-invasion-by-cryptococcus-neoformans
#6
Wei Fang, Zhen-Zong Fa, Qun Xie, Gui-Zhen Wang, Jiu Yi, Chao Zhang, Guang-Xun Meng, Ju-Lin Gu, Wan-Qing Liao
INTRODUCTION: Fungal transversal across the brain microvascular endothelial cells (BMECs) is the essential step for the development of cryptococcal meningoencephalitis. Annexin A2 (AnxA2) is an important signaling protein involved in several intracellular processes such as membrane trafficking, endocytosis, and exocytosis. AIM: To investigate the roles and mechanism of AnxA2 during cryptococcal transversal of BMECs. RESULTS: Cryptococcus neoformans infection initiated upregulation of AnxA2 in mouse BMECs...
January 28, 2017: CNS Neuroscience & Therapeutics
https://www.readbyqxmd.com/read/28123570/role-of-annexin-a2-in-the-egf-induced-epithelial-mesenchymal-transition-in-human-caski-cells
#7
Lei Cui, Jian Song, Liting Wu, Luhui Cheng, Aijun Chen, Yanlin Wang, Yingdi Huang, Liming Huang
The epidermal growth factor receptor (EGF-R) signaling pathway is thought to have an important role in the development and progression of several carcinomas, as it is associated with cell proliferation, differentiation and migration. Activation of EGF-R signaling regulates epithelial-mesenchymal transition (EMT)-associated invasion and migration in normal and malignant epithelial cells. However, the specific mechanisms have not yet been fully elucidated. The present study utilized wound healing assays, western blotting, flow cytometry and MTT assays to demonstrate that Annexin A2 (ANXA2) is a key regulatory factor in EGF-induced EMT in CaSki cervical cancer cells...
January 2017: Oncology Letters
https://www.readbyqxmd.com/read/28032857/heme-oxygenase-1-in-the-forefront-of-a-multi-molecular-network-that-governs-cell-cell-contacts-and-filopodia-induced-zippering-in-prostate-cancer
#8
Alejandra V Paez, Carla Pallavicini, Federico Schuster, Maria Pia Valacco, Jimena Giudice, Emiliano G Ortiz, Nicolás Anselmino, Estefania Labanca, Maria Binaghi, Marcelo Salierno, Marcelo A Martí, Javier H Cotignola, Anna Woloszynska-Read, Luciana Bruno, Valeria Levi, Nora Navone, Elba S Vazquez, Geraldine Gueron
Prostate cancer (PCa) cells display abnormal expression of cytoskeletal proteins resulting in an augmented capacity to resist chemotherapy and colonize distant organs. We have previously shown that heme oxygenase 1 (HO-1) is implicated in cell morphology regulation in PCa. Here, through a multi 'omics' approach we define the HO-1 interactome in PCa, identifying HO-1 molecular partners associated with the integrity of the cellular cytoskeleton. The bioinformatics screening for these cytoskeletal-related partners reveal that they are highly misregulated in prostate adenocarcinoma compared with normal prostate tissue...
December 29, 2016: Cell Death & Disease
https://www.readbyqxmd.com/read/27974247/annexin-a2-is-critical-for-blood-testis-barrier-integrity-and-spermatid-disengagement-in-the-mammalian-testis
#9
Katarzyna Chojnacka, Barbara Bilinska, Dolores D Mruk
Throughout spermatogenesis, two important processes occur at late stage VIII of the seminiferous epithelial cycle in the rat testis: preleptotene spermatocytes commence entry into the adluminal compartment and step 19 spermatids release from the seminiferous epithelium. Presently, it is not clear how these processes, which involve extensive restructuring of unique Sertoli-Sertoli and Sertoli-germ cell junctions, are mediated. We aimed to determine whether annexin A2 (ANXA2), a Ca(2+)-dependent and phospholipid-binding protein, participates in cell junction dynamics...
December 11, 2016: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/27956131/annexin-a2-is-involved-in-ca-2-dependent-plasma-membrane-repair-in-primary-human-endothelial-cells
#10
Sophia Nina Koerdt, Volker Gerke
Many cells in an organism are exposed to constant and acute mechanical stress that can induce plasma membrane injuries. These plasma membrane wounds have to be resealed rapidly to guarantee cell survival. Plasma membrane resealing in response to mechanical strain has been studied in some detail in muscle, where it is required for efficient recovery after insult. However, less is known about the capacity of other cell types and tissues to perform membrane repair and the underlying molecular mechanisms. Here we show that vascular endothelial cells, which are subject to profound mechanical burden, can reseal plasma membrane holes inflicted by laser ablation...
December 9, 2016: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/27892644/saliva-protein-biomarkers-to-detect-oral-squamous-cell-carcinoma-oscc
#11
R Nagler
In a recent study published in the Proceedings of the National Academy of Sciences of the U.S.A., Jau-Song Yu et al reported of their generated four-protein biomarker panel consisting of MMP1, KNG1, ANXA2, and HSPA5, as based on a risk-score scheme they established (Yu et al, 2016). This panel showed high sensitivity (87.5%) and specificity (80.5%) values in a test set to distinguish OSCC patients' saliva samples from non-OSCC patients' saliva samples. The risk score >0.4 detected 84% of the stage I OSCCs and a significant portion (42%) of the high-risk, visible, oral potentially-malignant disorders (OPMDs)...
November 28, 2016: Oral Diseases
https://www.readbyqxmd.com/read/27871932/s100a10-regulates-ulk1-localization-to-er-mitochondria-contact-sites-in-ifn-%C3%AE-triggered-autophagy
#12
Ying-Da Chen, Yi-Ting Fang, Chih-Peng Chang, Chiou-Feng Lin, Li-Jin Hsu, Shang-Rung Wu, Yen-Chi Chiu, Robert Anderson, Yee-Shin Lin
During the process of autophagy, the autophagy-related proteins are translocated to autophagosome formation sites. Here, we demonstrate that S100A10 is required for ULK1 localization to autophagosome formation sites. Silencing of S100A10 reduces IFN-γ-induced autophagosome formation. We also determined the role of annexin A2 (ANXA2), a binding partner of S100A10, which has been reported to promote phagophore assembly. Silencing of ANXA2 reduced S100A10 expression. However, overexpression of S100A10 in ANXA2-silenced cells was still able to enhance autophagosome formation, suggesting that ANXA2 regulates IFN-γ-induced autophagy through S100A10...
January 6, 2017: Journal of Molecular Biology
https://www.readbyqxmd.com/read/27836325/the-upregulation-of-annexin-a2-after-spinal-cord-injury-in-rats-may-have-implication-for-astrocyte-proliferation
#13
Jiajia Chen, Zhiming Cui, Saishuai Yang, Chunshuai Wu, Weidong Li, Guofeng Bao, Guanhua Xu, Yuyu Sun, Lingling Wang, Jinlong Zhang
Annexin A2 (ANXA2), is a member of the annexin family of proteins that exhibit Ca(2+)-dependent binding to phospholipids. One attractive biological function of ANXA2 is participating in DNA synthesis and cell proliferation. Previous studies have shown that ANXA2 play a role in the development of the central nervous system. However, the biological function of ANXA2 after spinal cord injury (SCI) is still with limited acquaintance. In the present study, we performed a SCI model in adult rats and investigated the dynamic changes of ANXA2 expression in the spinal cord...
February 2017: Neuropeptides
https://www.readbyqxmd.com/read/27821486/heterogeneous-stromal-signaling-within-the-tumor-microenvironment-controls-the-metastasis-of-pancreatic-cancer
#14
Agnieszka A Rucki, Kelly Foley, Pingbo Zhang, Qian Xiao, Jennifer Kleponis, Annie A Wu, Rajni Sharma, Guanglan Mo, Angen Liu, Jennifer Van Eyk, Elizabeth M Jaffee, Lei Zheng
Understanding how stromal signals regulate the development of pancreatic ductal adenocarcinoma (PDAC) may suggest novel therapeutic interventions in this disease. In this study, we assessed the metastatic role of stromal signals suggested to be important in the PDAC microenvironment. Src and IGF-1R phosphorylated the prometastatic molecule Annexin A2 (AnxA2) at Y23 and Y333 in response to stromal signals HGF and IGF-1, respectively, and IGF-1 expression was regulated by the Sonic Hedgehog (Shh) pathway. Both Shh and HGF were heterogeneously expressed in PDAC stroma, and only dual inhibition of these pathways could significantly suppress AnxA2 phosphorylation, PDAC growth, and metastasis...
January 1, 2017: Cancer Research
https://www.readbyqxmd.com/read/27773721/identification-of-krt16-as-a-target-of-an-autoantibody-response-in-complex-regional-pain-syndrome
#15
Maral Tajerian, Victor Hung, Hamda Khan, Lauren J Lahey, Yuan Sun, Frank Birklein, Heidrun H Krämer, William H Robinson, Wade S Kingery, J David Clark
OBJECTIVE: Using a mouse model of complex regional pain syndrome (CRPS), our goal was to identify autoantigens in the skin of the affected limb. METHODS: A CRPS-like state was induced using the tibia fracture/cast immobilization model. Three weeks after fracture, hindpaw skin was homogenized, run on 2-d gels, and probed by sera from fracture and control mice. Spots of interest were analyzed by liquid chromatography-mass spectroscopy (LC-MS) and the list of targets validated by examining their abundance and subcellular localization...
January 2017: Experimental Neurology
https://www.readbyqxmd.com/read/27760843/exosomal-annexin-ii-promotes-angiogenesis-and-breast-cancer-metastasis
#16
Sayantan Maji, Pankaj Chaudhary, Irina Akopova, Phung M Nguyen, Richard J Hare, Ignacy Gryczynski, Jamboor K Vishwanatha
: Tumor-derived exosomes are emerging mediators of tumorigenesis and tissue-specific metastasis. Proteomic profiling has identified Annexin II as one of the most highly expressed proteins in exosomes; however, studies focused on the biological role of exosomal Annexin II (exo-Anx II) are still lacking. In this study, mechanistic insight was sought regarding exo-Anx II and its function in angiogenesis and breast cancer metastasis. Multiple in vitro and in vivo techniques were used to study the role of exo-Anx II in angiogenesis...
January 2017: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/27754360/rack1-mediates-the-interaction-of-p-glycoprotein-with-anxa2-and-regulates-migration-and-invasion-of-multidrug-resistant-breast-cancer-cells
#17
Yi Yang, Na Wu, Zhiyong Wang, Fei Zhang, Ran Tian, Wei Ji, Xiubao Ren, Ruifang Niu
The emergence of multidrug resistance is always associated with more rapid tumor recurrence and metastasis. P-glycoprotein (P-gp), which is a well-known multidrug-efflux transporter, confers enhanced invasion ability in drug-resistant cells. Previous studies have shown that P-gp probably exerts its tumor-promoting function via protein-protein interaction. These interactions were implicated in the activation of intracellular signal transduction. We previously showed that P-gp binds to Anxa2 and promotes the invasiveness of multidrug-resistant (MDR) breast cancer cells through regulation of Anxa2 phosphorylation...
October 13, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27704162/tnf-alpha-and-annexin-a2-inflammation-in-thrombotic-primary-antiphospholipid-syndrome
#18
REVIEW
Mirjana Bećarević
Antiphospholipid syndrome (APS) is characterized by thromboses and/or pregnancy losses. Laboratory criterion for the diagnosis of APS is the presence of antiphospholipid antibodies (anticardiolipin, anti-beta2-glycoprotein I (aβ2gpI) and lupus anticoagulant). On the one hand, the latest classification criteria for the diagnosis of APS emphasized that thrombotic manifestations of the syndrome should be without any signs of an inflammatory process, while on the other hand, some recent reports have suggested that APS is a "pro-inflammatory state...
December 2016: Rheumatology International
https://www.readbyqxmd.com/read/27701057/effect-of-metformin-on-global-gene-expression-in-liver-of-kkay-mice
#19
Zhi-Qin Liu, Xiao-Mei Song, Que-Ting Chen, Ting Liu, Ji-Tao Teng, Kun Zhou, Du-Qiang Luo
BACKGROUND: Metformin is a first-line drug for treating type 2 diabetes mellitus, yet its mechanism remains only partially understood and controversial. In this study we assessed a global gene expression profiling in liver of KKAy mice affected by metformin. This study aimed to identify the novel anti-diabetic mechanisms of metformin. METHODS: After KKAy mice were administered metformin for 5 weeks, the gene changes profile in the livers of KKAy mice were assessed by using the Agilent whole mice genome oligo microarray...
December 2016: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/27667176/integrative-modeling-reveals-annexin-a2-mediated-epigenetic-control-of-mesenchymal-glioblastoma
#20
Teresia Kling, Roberto Ferrarese, Darren Ó hAilín, Patrik Johansson, Dieter Henrik Heiland, Fangping Dai, Ioannis Vasilikos, Astrid Weyerbrock, Rebecka Jörnsten, Maria Stella Carro, Sven Nelander
Glioblastomas are characterized by transcriptionally distinct subtypes, but despite possible clinical relevance, their regulation remains poorly understood. The commonly used molecular classification systems for GBM all identify a subtype with high expression of mesenchymal marker transcripts, strongly associated with invasive growth. We used a comprehensive data-driven network modeling technique (augmented sparse inverse covariance selection, aSICS) to define separate genomic, epigenetic, and transcriptional regulators of glioblastoma subtypes...
October 2016: EBioMedicine
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