• Anti-dsDNA Antibodies Promote Initiation, and Acquired Loss of Renal Dnase1 Promotes Progression of Lupus Nephritis in Autoimmune (NZBxNZW)F1 mice 

      Fenton, Kristin Andreassen; Fismen, Silje; Hedberg, Annica; Seredkina, Natalya; Fenton, Christopher Graham; Mortensen, Elin; Rekvik, Ole Petter (Journal article; Tidsskriftartikkel; Peer reviewed, 2009)
    • B Cell Tolerance to Deiminated Histones in BALB/c, C57BL/6, and Autoimmune-Prone Mouse Strains 

      Dwivedi, Nishant; Hedberg, Annica; Zheng, Ying Yi; Neeli, Indira; Satoh, Minoru; Morel, Laurence; Rekvig, Ole Petter; Radic, Marko (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-03-30)
      Deimination, a posttranslational modification of arginine to citrulline carried out by peptidylarginine deiminases, may compromise tolerance of self-antigens. Patients with connective tissue autoimmunity, particularly rheumatoid arthritis (RA), systemic lupus erythematosus (SLE), or Felty’s syndrome, present with autoantibodies to deiminated histones (dH), which thus form a category of antibodies ...
    • The expression of the long NEAT1_2 isoform is associated with human epidermal growth factor receptor 2-positive breast cancers 

      Knutsen, Erik; Lellahi, Seyed Mohammad; Aure, Miriam Ragle; Nord, Silje; Fismen, Silje; Larsen, Kenneth Bowitz; Tellez Gabriel, Marta; Hedberg, Annica; Bjørklund, Sunniva; Bofin, Anna M.; Mælandsmo, Gunhild Mari; Sørlie, Therese; Mortensen, Elin Synnøve; Perander, Maria (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-01-28)
      The long non-coding RNA <i>NEAT1</i> locus is transcribed into two overlapping isoforms, <i>NEAT1_1</i> and <i>NEAT1_2</i>, of which the latter is essential for the assembly of nuclear paraspeckles. <i>NEAT1</i> is abnormally expressed in a wide variety of human cancers. Emerging evidence suggests that the two isoforms have distinct functions in gene expression regulation, and recently it was shown ...
    • LMW Heparin Prevents Increased Kidney Expression of Proinflammatory Mediators in (NZBxNZW)F1 Mice 

      Hedberg, Annica; Kanapathippillai, Premasany; Rekvig, Ole Petter; Fenton, Kristin Andreassen (Journal article; Tidsskriftartikkel; Peer reviewed, 2013)
      We have previously demonstrated that continuous infusion of low molecular weight (LMW) heparin delays autoantibody production and development of lupus nephritis in (NZBxNZW)F1 (B/W) mice. In this study we investigated the effect of LMW heparin on renal cytokine and chemokine expression and on nucleosome-mediated activation of nucleosome-specific splenocytes. Total mRNA extracted from kidneys of ...
    • The long noncoding RNA NEAT1 and nuclear paraspeckles are up-regulated by the transcription factor HSF1 in the heat shock response 

      Lellahi, Seyed Mohammad; Rosenlund, Ingrid Arctander; Hedberg, Annica; Kiær, Liv Torill; Mikkola, Ingvild; Knutsen, Erik; Perander, Maria (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-10-10)
      The long noncoding RNA (lncRNA) <i>NEAT1</i> (nuclear enriched abundant transcript 1) is the architectural component of nuclear paraspeckles, and it has recently gained considerable attention as it is abnormally expressed in pathological conditions such as cancer and neurodegenerative diseases. <i>NEAT1</i> and paraspeckle formation are increased in cells upon exposure to a variety of environmental ...
    • Nuclear group I introns in self-splicing and beyond 

      Hedberg, Annica; Johansen, Steinar (Journal article; Tidsskriftartikkel; Peer reviewed, 2013)
      Group I introns are a distinct class of RNA self-splicing introns with an ancient origin. All known group I introns present in eukaryote nuclei interrupt functional ribosomal RNA genes located in ribosomal DNA loci. The discovery of the Tetrahymena intron more than 30 years ago has been essential to our understanding of group I intron catalysis, higher-order RNA structure, and RNA folding, but ...