Now showing items 381-400 of 1059

    • Liver sinusoidal endothelial cells contribute to the uptake and degradation of entero bacterial viruses 

      Øie, Cristina Ionica; Wolfson, Deanna; Yasunori, Tanji; Dumitriu, Gianina; Sørensen, Karen Kristine; McCourt, Peter Anthony; Ahluwalia, Balpreet Singh; Smedsrød, Bård (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-01-21)
      The liver is constantly exposed to dietary antigens, viruses, and bacterial products with inflammatory potential. For decades cellular uptake of virus has been studied in connection with infection, while the few studies designed to look into clearance mechanisms focused mainly on the role of macrophages. In recent years, attention has been directed towards the liver sinusoidal endothelial cells ...
    • NIPSNAP1 and NIPSNAP2 Act as “Eat Me” Signals for Mitophagy 

      Abudu, Yakubu Princely; Pankiv, Serhiy; Mathai, Benan John; Lystad, Alf Håkon; Bindesbøll, Christian; Brenne, Hanne Britt; Ng, Matthew Yoke Wui; Thiede, Bernd; Yamamoto, Ai; Nthiga, Thaddaeus Mutugi; Lamark, Trond; Esguerra, Camila Vicencio; Johansen, Terje; Simonsen, Anne (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-04-11)
      The clearance of damaged or dysfunctional mitochondria by selective autophagy (mitophagy) is important for cellular homeostasis and prevention of disease. Our understanding of the mitochondrial signals that trigger their recognition and targeting by mitophagy is limited. Here, we show that the mitochondrial matrix proteins 4-Nitrophenylphosphatase domain and non-neuronal SNAP25-like protein homolog ...
    • Combined Therapy With Dobutamine and Omecamtiv Mecarbil in Pigs With Ischemic Acute Heart Failure Is Attributed to the Effect of Dobutamine 

      Rødland, Lars; Rønning, Leif Reidar Brenk; Kildal, Anders Benjamin; Myrmel, Truls; How, Ole-Jakob (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-10-23)
      Inotropic support in ischemic acute heart failure (AHF) is controversial. We tested a therapeutic principle for AHF by combining a low dose of omecamtiv mecarbil (OM; 0.25 mg/kg bolus plus 0.25 mg/kg/h) with a low dose of dobutamine (Dobut; 1.25 µg/kg/min). In 10 pigs subjected to myocardial ischemia by left coronary microembolization, this cotreatment increased cardiac power (CP) from 0.48 ± 0.14 ...
    • Nrf2 and SQSTM1/p62 jointly contribute to mesenchymal transition and invasion in glioblastoma 

      Pölonen, Petri; Jawahar Deen, Ashik; Leinonen, Hanna M.; Jyrkkänen, Henna-Kaisa; Kuosmanen, Suvi; Mononen, Mimmi; Jain, Ashish; Tuomainen, Tomi; Pasonen-Seppänen, Sanna; Hartikainen, Jaana M.; Mannermaa, Arto; Nykter, Matti; Tavi, Pasi; Johansen, Terje; Heinäniemi, Merja; Levonen, Anna-Liisa (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-08-23)
      Accumulating evidence suggests that constitutively active Nrf2 has a pivotal role in cancer as it induces pro-survival genes that promote cancer cell proliferation and chemoresistance. The mechanisms of Nrf2 dysregulation and functions in cancer have not been fully characterized. Here, we jointly analyzed the Broad-Novartis Cancer Cell Line Encyclopedia (CCLE) and the Cancer Genome Atlas (TCGA) ...
    • TAK1 converts Sequestosome 1/p62 from an autophagy receptor to a signaling platform 

      Kehl, Stephanie R; Soos, Brandy-Lee A; Saha, Bhaskar; Choi, Seong Won; Herren, Anthony W; Johansen, Terje; Mandell, Michael A (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-07-25)
      The protein p62/Sequestosome 1 (p62) has been described as a selective autophagy receptor and independently as a platform for pro‐inflammatory and other intracellular signaling. How these seemingly disparate functional roles of p62 are coordinated has not been resolved. Here, we show that TAK1, a kinase involved in immune signaling, negatively regulates p62 action in autophagy. TAK1 reduces p62 ...
    • Selective Autophagy: RNA Comes from the Vault to Regulate p62/SQSTM1 

      Johansen, Terje (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-04-22)
      A new study shows that the oligomerization of p62/Sequestosome-1 (SQSTM1) — a selective autophagy receptor and signaling adapter — is regulated directly by vault RNA. This riboregulation negatively affects the aggregation state of p62 and thereby its autophagic degradation and its role as a selective autophagy receptor.
    • Selective Autophagy: ATG8 Family Proteins, LIR Motifs and Cargo Receptors 

      Johansen, Terje; Lamark, Trond (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-07-13)
      Selective autophagy relies on soluble or membrane-bound cargo receptors that recognize cargo and bring about autophagosome formation at the cargo. The cargo-bound receptors interact with lipidated ATG8 family proteins anchored in the membrane at the concave side of the forming autophagosome. The interaction is mediated by 15- to 20-amino-acid-long sequence motifs called LC3-interacting region (LIR) ...
    • Mammalian Atg8 proteins regulate lysosome and autolysosome biogenesis through SNAREs 

      Gu, Yuexi; Abudu, Yakubu Princely; Kumar, Suresh; Bissa, Bhawana; Choi, Seong Won; Jia, Jingyue; Lazarou, Michael; Eskelinen, Eeva-Liisa; Johansen, Terje; Deretic, Vojo (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-10-18)
      Mammalian homologs of yeast Atg8 protein (mAtg8s) are important in autophagy, but their exact mode of action remains ill‐defined. Syntaxin 17 (Stx17), a SNARE with major roles in autophagy, was recently shown to bind mAtg8s. Here, we identified LC3‐interacting regions (LIRs) in several SNAREs that broaden the landscape of the mAtg8‐SNARE interactions. We found that Syntaxin 16 (Stx16) and its cognate ...
    • The effects of metformin on age-related changes in the liver sinusoidal endothelial cell 

      Hunt, Nick; Lockwood, Glen P; Kang, Sun; Pulpitel, Tamara; Clark, Ximonie; Mao, Hong; McCourt, Peter Anthony; Cooney, Greg; Wali, Jibran; Le Couteur, Frank; Le Couteur, David George; Cogger, Victoria Carroll (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-06-14)
      Age-related changes in the liver sinusoidal endothelium, particularly the reduction in fenestrations, contribute to insulin resistance in old age. Metformin impacts on the aging process and improves insulin resistance. Therefore, the effects of metformin on the liver sinusoidal endothelium were studied. Metformin increased fenestrations in liver sinusoidal endothelial cells isolated from both young ...
    • Use of Peptide Arrays for Identification and Characterization of LIR Motifs 

      Rasmussen, Mads Skytte; Birgisdottir, Åsa birna; Johansen, Terje (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-01-05)
      The mammalian ATG8 proteins (LC3A-C/GABARAP, GABARAPL1, and GABARAPL2) are small ubiquitin-like proteins critically involved in macroautophagy. Their processed C-termini are posttranslationally conjugated to a phosphatidylethanolamine moiety, enabling their insertion into the lipid bilayers of both the inner and outer membranes of the forming autophagosomes. The ATG8s bind a diverse selection of ...
    • Phosphorylation of Syntaxin 17 by TBK1 Controls Autophagy Initiation 

      Kumar, Suresh; Gu, Yuexi; Abudu, Yakubu Princely; Bruun, Jack-Ansgar; Jain, Ashish; Farzam, Farzin; Mudd, Michal H.; Anonsen, Jan Haug; Rusten, Tor Erik; Kasof, Gary; Ktistakis, Nicholas; Lidke, Keith A; Johansen, Terje; Deretic, Vojo (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-02-28)
      Syntaxin 17 (Stx17) has been implicated in autophagosome-lysosome fusion. Here, we report that Stx17 functions in assembly of protein complexes during autophagy initiation. Stx17 is phosphorylated by TBK1 whereby phospho-Stx17 controls the formation of the ATG13<sup>+</sup>FIP200<sup>+</sup> mammalian pre-autophagosomal structure (mPAS) in response to induction of autophagy. TBK1 phosphorylates Stx17 ...
    • Design, synthesis and biological evaluation of 6‐substituted quinolines derived from cabozantinib as c‐Met inhibitors 

      Lien, Vegard Torp; Pettersen, Solveig; Haugen, Mads Haugland; Olberg, Dag Erlend; Mælandsmo, Gunhild Mari; Klaveness, Jo (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-08-15)
      Based on the cabozantinib scaffold, novel c‐Met inhibitors were rationalized from the limited knowledge of structure‐activity relationships for the quinoline 6‐position. Emphasis was given to modifications capable of engaging in additional polar interactions with the c‐Met active site. In addition, <i>ortho</i>‐fluorinations of the terminal benzene ring were explored. Fifteen new molecules were ...
    • Strong correlation between the rates of intrinsically antibiotic-resistant species and the rates of acquired resistance in Gram-negative species causing bacteraemia, EU/EEA, 2016 

      Jarlier, Vincent; Högberg, Liselotte Diaz; Heuer, Ole E.; Campos, Josó; Eckmanns, Tim; Giske, Christian G.; Grundmann, Hajo; Johnson, Alan P.; Kahlmeter, Gunnar; Monen, Jos; Pantosti, Annalisa; Rossolini, Gian Maria; van de Sande-Bruinsma, Nienke; Vatopoulos, Alkiviadis; Żabicka, Dorota; Žemličková, Helena; Monnet, Dominique L.; Simonsen, Gunnar Skov (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-08-15)
      <i>Background</i> - Antibiotic resistance, either intrinsic or acquired, is a major obstacle for treating bacterial infections.<p><p> <i>Aim</i> - Our objective was to compare the country-specific species distribution of the four Gram-negative species <i>Escherichia coli, Klebsiella pneumoniae, Pseudomonas aeruginosa</i> and <i>Acinetobacter</i> species and the proportions of selected acquired ...
    • Attributable deaths and disability-adjusted life-years caused by infections with antibiotic-resistant bacteria in the EU and the European Economic Area in 2015: a population-level modelling analysis 

      Cassini, Alessandro; Högberg, Liselotte Diaz; Plachouras, Diamantis; Quattrocchi, Annalisa; Hoxha, Ana; Simonsen, Gunnar Skov; Colomb-Cotinat, Mélanie; Kretzschmar, Mirjam E.; Devleesschauwer, Brecht; Cecchini, Michele; Ouakrim, Driss Ait; Oliveira, Tiago Cravo; Struelens, Marc J.; Suetens, Carl; Monnet, Dominique L. (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-11-05)
      <i>Background</i> - Infections due to antibiotic-resistant bacteria are threatening modern health care. However, estimating their incidence, complications, and attributable mortality is challenging. We aimed to estimate the burden of infections caused by antibiotic-resistant bacteria of public health concern in countries of the EU and European Economic Area (EEA) in 2015, measured in number of ...
    • The successful uptake and sustainability of rapid infectious disease and antimicrobial resistance point-of-care testing requires a complex 'mix-and-match' implementation package 

      Hays, John P.; Mitsakakis, Konstantinos; Luz, Saturnino; van Belkum, Alex; Becker, Karsten; van den Bruel, Ann; Harbarth, Stephan; Rex, John H.; Simonsen, Gunnar Skov; Werner, Guido; Di Gregori, Valentina; Lüdke, Gerd; van Staa, Tjeerd; Moran-Gilad, Jacob; Bachmann, Till T. (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-02-02)
      The emergence and spread of antimicrobial resistance is one of the major global issues currently threatening the health and wealth of nations, with effective guidelines and intervention strategies urgently required. Such guidelines and interventions should ideally be targeted at individuals, communities, and nations, requiring international coordination for maximum effect. In this respect, the ...
    • Homology modeling to screen for potential binding of contaminants to thyroid hormone receptor and transthyretin in glaucous gull (Larus hyperboreus) and herring gull (Larus argentatus) 

      Mortensen, Åse-Karen; Mæhre, Silje; Kristiansen, kurt; Heimstad, Eldbjørg Sofie; Gabrielsen, Geir W.; Jenssen, Bjørn Munro; Sylte, Ingebrigt (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-01-11)
      Thyroid hormone disrupting chemicals (THDCs) are of major concern in ecotoxicology. With the increased number of emerging chemicals on the market there is a need to screen for potential THDCs in a cost-efficient way, and <i>in silico</i> modeling is an alternative to address this issue. In this study homology modeling and docking was used to screen a list of 626 compounds for potential thyroid hormone ...
    • Liver sinusoidal endothelial cell ICAM-1 mediated tumor/endothelial crosstalk drives the development of liver metastasis by initiating inflammatory and angiogenic responses 

      Benedicto, Aitor; Herrero, Alba; Romayor, Irene; Marquez, Joana; Smedsrød, Bård; Olaso, Elvira; Arteta, Beatriz (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-09-11)
      The prometastatic stroma generated through tumor cells/host cells interaction is critical for metastatic growth. To elucidate the role of ICAM-1 on the crosstalk between tumor and primary liver sinusoidal endothelial cells (LSECs) and hepatic stellate cells (HSCs), implicated in tumor adhesion and angiogenesis, we performed <i>in vitro</i> cocultures and an <i>in vivo</i> model of liver metastasis ...
    • Prediction of human drug-induced liver injury (DILI) in relation to oral doses and blood concentrations 

      Albrecht, Wiebke; Kappenberg, Franziska; Brecklinghaus, Tim; Stoeber, Regina; Marchan, Rosemarie; Zhang, Mian; Ebbert, Kristina; Kirschner, Hendrik; Grinberg, Marianna; Leist, Marcel; Moritz, Wolfgang; Cadenas, Cristina; Ghallab, Ahmed; Reinders, Jörg; Vartak, Nachiket; van Thriel, Christoph; Golka, Klaus; Tolosa, Laia; Castell, José V.; Damm, Georg; Seehofer, Daniel; Lampen, Alfonso; Braeuning, Albert; Buhrke, Thorsten; Behr, Anne-Cathrin; Oberemm, Axel; Gu, Xiaolong; Kittana, Naim; van de Water, Bob; Kreiling, Reinhard; Fayyaz, Susann; van Aerts, Leon; Smedsrød, Bård; Ellinger-Ziegelbauer, Heidrun; Steger-Hartmann, Thomas; Gundert-Remy, Ursula; Zeigerer, Anja; Ullrich, Anett; Runge, Dieter; Lee, Serene M.L.; Schiergens, Tobias S.; Kuepfer, Lars; Aguayo-Orozco, Alejandro; Sachinidis, Agapios; Edlund, Karolina; Gardner, Iain; Rahnenführer, Jörg; Hengstler, Jan G. (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-06-27)
      Drug-induced liver injury (DILI) cannot be accurately predicted by animal models. In addition, currently available in vitro methods do not allow for the estimation of hepatotoxic doses or the determination of an acceptable daily intake (ADI). To overcome this limitation, an in vitro/in silico method was established that predicts the risk of human DILI in relation to oral doses and blood concentrations. ...
    • SQSTM-1/p62 potentiates HTLV-1 Tax-mediated NF-κB activation through its ubiquitin binding function 

      Schwob, Aurélien; Teruel, Elodie; Dubuisson, Louise; Lormières, Florence; Verlhac, Pauline; Abudu, Yakubu Princely; Gauthier, Janelle; Naoumenko, Marie; Cloarec-Ung, Fanny-Meï; Faure, Mathias; Johansen, Terje; Dutartre, Hélène; Mahieux, Renaud; Journo, Chloé (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-11-05)
      The NF-κB pathway is constitutively activated in adult T cell leukemia, an aggressive malignancy caused by Human T Leukemia Virus type 1 (HTLV-1). The viral oncoprotein Tax triggers this constitutive activation by interacting with the ubiquitin-rich IKK complex. We previously demonstrated that Optineurin and TAX1BP1, two members of the ubiquitin-binding, Sequestosome-1 (SQSTM-1/p62)-like selective ...
    • Simultaneous Detection of Zinc and Its Pathway Metabolites Using MALDI MS Imaging of Prostate Tissue 

      Andersen, Maria Karoline; Krossa, Sebastian; Høiem, Therese Stork; Buchholz, Rebecca; Claes, Britt S.R.; Balluff, Benjamin; Ellis, Shane; Richardsen, Elin; Bertilsson, Helena; Heeren, Ron M.A.; Bathen, Tone Frost; Karst, Uwe; Giskeødegård, Guro F.; Tessem, May-Britt (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-01-16)
      Levels of zinc, along with its mechanistically related metabolites citrate and aspartate, are widely reported as reduced in prostate cancer compared to healthy tissue and are therefore pointed out as potential cancer biomarkers. Previously, it has only been possible to analyze zinc and metabolites by separate detection methods. Through matrix-assisted laser desorption/ionization mass spectrometry ...