• Quantitative analysis methods for studying fenestrations in liver sinusoidal endothelial cells. A comparative study 

      Szafranska, Karolina; Holte, Christopher Florian; Kruse, Larissa Dorothea; Mao, Hong; Øie, Cristina Ionica; Symonski, Marek; Zapotoczny, Bartlomiej; McCourt, Peter Anthony (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-07-28)
      Liver Sinusoidal Endothelial Cells (LSEC) line the hepatic vasculature providing blood filtration via transmembrane nanopores called fenestrations. These structures are 50−300 nm in diameter, which is below the resolution limit of a conventional light microscopy. To date, there is no standardized method of fenestration image analysis. With this study, we provide and compare three different approaches: ...
    • Quantitative analysis methods for studying fenestrations in liver sinusoidal endothelial cells. A comparative study 

      Szafranska, K.; Holte, Christopher Florian; Kruse, L.D.; Mao, Hong; Øie, Cristina Ionica; Szymonski, M.; Zapotoczny, B.; McCourt, P.A.G. (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-07-28)
      Liver Sinusoidal Endothelial Cells (LSEC) line the hepatic vasculature providing blood filtration via transmembrane nanopores called fenestrations. These structures are 50−300 nm in diameter, which is below the resolution limit of a conventional light microscopy. To date, there is no standardized method of fenestration image analysis. With this study, we provide and compare three different approaches: ...
    • Quantitative phase microscopy of red blood cells during planar trapping and propulsion 

      Ahmad, Azeem; Dubey, Vishesh; Singh, Vijay; Tinguely, Jean-Claude; Øie, Cristina Ionica; Wolfson, Deanna; Mehta, Dalip Singh; So, Peter T. C.; Ahluwalia, Balpreet Singh (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-08-22)
      Red blood cells (RBCs) have the ability to undergo morphological deformations during microcirculation, such as changes in surface area, volume and sphericity. Optical waveguide trapping is suitable for trapping, propelling and deforming large cell populations along the length of the waveguide. Bright field microscopy employed with waveguide trapping does not provide quantitative information about ...
    • Rat liver sinusoidal endothelial cells (LSECs) express functional low density lipoprotein receptor-related protein-1 (LRP-1) 

      Øie, Cristina Ionica; Appa, Rupa Shree; Hilden, Ida; Petersen, Helle Heibroch; Gruhler, Albrecht; Smedsrød, Bård; Hansen, John-Bjarne (Journal article; Tidsskriftartikkel; Peer reviewed, 2011)
      The low density lipoprotein receptor-related protein-1 (LRP-1) is a large, multifunctional endocytic receptor from the LDL receptor family, highly expressed in liver parenchymal cells (PCs), neurons, activated astrocytes, and fibroblasts. The aim of the study was to investigate if liver sinusoidal endothelial cells (LSECs), highly specialized scavenger cells, express LRP-1. To address this question, ...
    • SAMM50 acts with p62 in piecemeal basal- and OXPHOS-induced mitophagy of SAM and MICOS components 

      Abudu, Yakubu Princely; Shrestha, Birendra Kumar; Zhang, Wenxin; Palara, Anthimi; Brenne, Hanne Britt; Larsen, Kenneth Bowitz; Wolfson, Deanna; Dumitriu, Gianina; Øie, Cristina Ionica; Ahluwalia, Balpreet Singh; Levy, Gahl; Behrends, Christian; Tooze, Sharon A; Mouilleron, Stephane; Lamark, Trond; Johansen, Terje (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-05-26)
      Mitophagy is the degradation of surplus or damaged mitochondria by autophagy. In addition to programmed and stress-induced mitophagy, basal mitophagy processes exert organelle quality control. Here, we show that the sorting and assembly machinery (SAM) complex protein SAMM50 interacts directly with ATG8 family proteins and p62/SQSTM1 to act as a receptor for a basal mitophagy of components of the ...
    • Structured Illumination Microscopy of Biological Structures 

      Wolfson, Deanna; Villegas, Luis; Opstad, Ida Sundvor; Birgisdottir, Åsa birna; Øie, Cristina Ionica; Ahluwalia, Balpreet Singh (Conference object; Konferansebidrag, 2018)
      <p>Resolution in optical microscopy has long been limited to the Abbe diffraction limit, i.e. about 250 nm laterally for visible wavelengths on a very good microscope. In the last two decades several techniques have been devised to circumvent this limit: an achievement which was recognized with the 2014 Nobel Prize in Chemistry. Structured Illumination Microscopy (SIM) was the first of these techniques ...
    • Uptake and Degradation of Bacteriophages by Liver Sinusoidal Endothelial Cells 

      Wolfson, Deanna; Øie, Cristina Ionica; Yasunori, Tanji; Dumitriu, Gianina; McCourt, Peter Anthony; Sørensen, Karen Kristine; Smedsrød, Bård; Ahluwalia, Balpreet Singh (Conference object; Konferansebidrag, 2018)
      <p>Bacteriophages (briefly, “phages”) are viruses which target bacteria, and are non-infectious to eukaryotic cells. It is estimated that more than 30 billion phages cross into the human body from the gut each day1, and eventually need to be cleared from the blood circulation. The liver plays a central role in pathogen clearance, and liver sinusoidal endothelial cells (LSECs), which form the lining ...