• Autofluorescence in freshly isolated adult human liver sinusoidal cells 

      Larsen, Anett Kristin; Simon-Santamaria, Jaione; Elvevold, Kjetil; Ericzon, Bo Gøran; Mortensen, Kim Erlend; McCourt, Peter Anthony; Smedsrød, Bård; Sørensen, Karen Kristine (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-12-13)
      Autofluorescent granules of various sizes were observed in primary human liver endothelial cells (LSECs) upon laser irradiation using a wide range of wavelengths. Autofluorescence was detected in LAMP-1 positive vesicles, suggesting lysosomal location. Confocal imaging of freshly prepared cultures and imaging flow cytometry of non-cultured cells revealed fluorescence in all channels used. Treatment ...
    • Changes in the proteome and secretome of rat liver sinusoidal endothelial cells during early primary culture and effects of dexamethasone 

      Li, Ruomei; Bhandari, Sabin; Martinez-Zubiaurre, Inigo; Bruun, Jack-Ansgar; Urbarova, Ilona Halva; Smedsrød, Bård; Simon-Santamaria, Jaione; Sørensen, Karen Kristine (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-09-02)
      Introduction<p> <p>Liver sinusoidal endothelial cells (LSECs) are specialized fenestrated scavenger endothelial cells involved in the elimination of modified plasma proteins and tissue turnover waste macromolecules from blood. LSECs also participate in liver immune responses. A challenge when studying LSEC biology is the rapid loss of the in vivo phenotype in culture. In this study, we have ...
    • Dose- and time-dependent effects of triethylene glycol dimethacrylate on the proteome of human THP-1 monocytes 

      Nilsen, Bo Wold; Simon-Santamaria, Jaione; Ørtengren, Ulf Thore; Jensen, Einar; Bruun, Jack-Ansgar; Michelsen, Vibeke Barman; Sørensen, Karen Kristine (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-07-27)
      Triethylene glycol dimethacrylate (TEGDMA) is commonly used in polymer resinbased dental materials. This study investigated the molecular mechanisms of TEGDMA toxicity by identifying its time- and dose-dependent effects on the proteome of human THP-1 monocytes. The effects of different concentrations (0.07– 5 mM) and exposure times (0–72 h) of TEGDMA on cell viability, proliferation, and morphology ...
    • Efficient uptake of blood-borne BK and JC polyomavirus-like particles in endothelial cells of liver sinusoids and renal vasa recta 

      Simon-Santamaria, Jaione; Rinaldo, Christine Hanssen; Kardas, Piotr; Li, Ruomei; Malovic, Ivana; Elvevold, Kjetil H.; McCourt, Peter Anthony; Smedsrød, Bård; Hirsch, Hans H.; Sørensen, Karen Kristine (Journal article; Tidsskriftartikkel; Peer reviewed, 2014-11-06)
    • Entrance and survival of Brucella pinnipedialis hooded seal strain in human macrophages and epithelial cells 

      Larsen, Anett Kristin; Nymo, Ingebjørg Helena; Briquemont, Benjamin; Sørensen, Karen Kristine; Godfroid, Jacques (Journal article; Tidsskriftartikkel; Peer reviewed, 2013)
      Marine mammal Brucella spp. have been isolated from pinnipeds (B. pinnipedialis) and cetaceans (B. ceti) from around the world. Although the zoonotic potential of marine mammal brucellae is largely unknown, reports of human disease exist. There are few studies of the mechanisms of bacterial intracellular invasion and multiplication involving the marine mammal Brucella spp. We examined the infective ...
    • Hepatic disposal of advanced glycation end products during maturation and aging 

      Svistounov, Dmitri; Oteiza, Ana; Zykova, Svetlana; Sørensen, Karen Kristine; McCourt, Peter Anthony; McLachlan, Andrew J; Mccuskey, Robert Scott; Smedsrød, Bård (Journal article; Tidsskriftartikkel; Peer reviewed, 2013)
      Aging is characterized by progressive loss of metabolic and biochemical functions and accumulation of metabolic by-products, including advanced glycation end products (AGEs), which are observed in several pathological conditions. A number of waste macromolecules, including AGEs are taken up from the circulation by endocytosis mainly into liver sinusoidal endothelial cells (LSECs) and Kupffer cells ...
    • Infection of liver sinusoidal endothelial cells with Muromegalovirus muridbeta1 involves binding to neuropilin-1 and is dynamin-dependent 

      Karlstrøm, Ingelin Kyrrestad; Larsen, Anett Kristin; Sanchez Romano, Javier; Simon, Jaione Santamaria; Li, Ruomei; Sørensen, Karen Kristine (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-11-09)
      Liver sinusoidal endothelial cells (LSEC) are scavenger cells with a remarkably high capacity for clearance of several blood-borne macromolecules and nanoparticles, including some viruses. Endocytosis in LSEC is mainly via the clathrin-coated pit mediated route, which is dynamin-dependent. LSEC can also be a site of infection and latency of betaherpesvirus, but mode of virus entry into these ...
    • Liposomes-in-Hydrogel Delivery System with Mupirocin: In Vitro Antibiofilm Studies and In Vivo Evaluation in Mice Burn Model 

      Hurler, Julia; Sørensen, Karen Kristine; Fallalero, Adyary; Vuorela, Pia; Skalko-Basnet, Natasa (Journal article; Tidsskriftartikkel; Peer reviewed, 2013)
      Previously, we have proposed mupirocin-in-liposomes-in-hydrogel delivery system as advanced delivery system with the potential in treatment of burns. In the current studies, we evaluated the system for its cytotoxicity, ability to prevent biofilm formation, act on the mature biofilms, and finally determined its potential as wound treatment in in vivo mice burn model.The system was found to be ...
    • 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 ...
    • Liver sinusoidal endothelial cells show reduced scavenger function and downregulation of Fc gamma receptor IIB, yet maintain a preserved fenestration the Glmp gt/gt mouse model of slowly progressing liver fibrosis 

      Antwi, Milton Boaheng; Dumitriu, Gianina; Simón-Santamaria, Jaione; Sánchez Romano, Javier; Li, Ruomei; Smedsrød, Bård; Vik, Anders; Eskild, Winnie; Sørensen, Karen Kristine (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-11-01)
      Liver sinusoidal endothelial cells (LSECs) are fenestrated endothelial cells with a unique, high endocytic clearance capacity for blood-borne waste macromolecules and colloids. This LSEC scavenger function has been insufficiently characterized in liver disease. The Glmp<sup>gt/gt</sup> mouse lacks expression of a subunit of the MFSD1/GLMP lysosomal membrane protein transporter complex, is born ...
    • The scavenger function of liver sinusoidal endothelial cells in health and disease 

      Bhandari, Sabin; Larsen, Anett Kristin; McCourt, Peter Anthony; Smedsrød, Bård; Sørensen, Karen Kristine (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-10-11)
      The aim of this review is to give an outline of the blood clearance function of the liver sinusoidal endothelial cells (LSECs) in health and disease. Lining the hundreds of millions of hepatic sinusoids in the human liver the LSECs are perfectly located to survey the constituents of the blood. These cells are equipped with high-affinity receptors and an intracellular vesicle transport apparatus, ...
    • Transcriptome and proteome profiling reveal complementary scavenger and immune features of rat liver sinusoidal endothelial cells and liver macrophages 

      Bhandari, Sabin; Li, Ruomei; Simon-Santamaria, Jaione; McCourt, Peter Anthony; Johansen, Steinar Daae; Smedsrød, Bård; Martinez, Inigo Zubiavrre; Sørensen, Karen Kristine (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-11-27)
      <i>Background</i> - Liver sinusoidal endothelial cells (LSECs) and Kupffer cells (KCs; liver resident macrophages) form the body’s most effective scavenger cell system for the removal of harmful blood-borne substances, ranging from modified self-proteins to pathogens and xenobiotics. Controversies in the literature regarding the LSEC phenotype pose a challenge when determining distinct functionalities ...