Blar i Bergen Open Research Archive på forfatter "Selheim, Frode"
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Bortezomib administered prior to temozolomide depletes MGMT, chemosensitizes glioblastoma with unmethylated MGMT promoter and prolongs animal survival
Rahman, Mohummad Aminur; Gras Navarro, Andrea; Brekke, Jorunn; Engelsen, Agnete; Bindesbøll, Christian; Sarowar, Shahin; Bahador, Marzieh; Bifulco, Ersilia; Goplen, Dorota; Waha, Andreas; Lie, Stein Atle; Gjertsen, Bjørn Tore; Selheim, Frode; Enger, Per Øyvind; Simonsen, Anne; Enger, Martha Chekenya (Peer reviewed; Journal article, 2019-08-15)Background Resistance to temozolomide (TMZ) is due in part to enhanced DNA repair mediated by high expression of O6-methyl guanine DNA methyltransferase (MGMT) that is often characterised by unmethylated promoter. Here, ... -
The Capacity of Long-Term In Vitro Proliferation of Acute Myeloid Leukemia Cells Supported Only by Exogenous Cytokines Is Associated with a Patient Subset with Adverse Outcome
Brenner, Annette; Aasebø, Elise; Hernandez-Valladares, Maria; Selheim, Frode; Berven, Frode; Grønningsæter, Ida Sofie; Bartaula-Brevik, Sushma; Bruserud, Øystein (Peer reviewed; Journal article, 2019-01-10)Acute myeloid leukemia (AML) is an aggressive malignancy, which is highly heterogeneous with regard to chemosensitivity and biological features. The AML cell population is organized in a hierarchy that is reflected in the ... -
Epac1-deficient mice have bleeding phenotype and thrombocytes with decreased GPIbβ expression
Nygaard, Gyrid; Herfindal, Lars; Åsrud, Kathrine Sivertsen; Bjørnstad, Ronja; Kopperud, Reidun Kristin; Oveland, Eystein; Berven, Frode; Myhren, Lene Elisabeth; Høivik, Erling Andre; Lunde, Turid Helen Felli; Bakke, Marit; Døskeland, Stein Ove; Selheim, Frode (Peer reviewed; Journal article, 2017)Epac1 (Exchange protein directly activated by cAMP 1) limits fluid loss from the circulation by tightening the endothelial barrier. We show here that Epac1−/− mice, but not Epac2−/− mice, have prolonged bleeding time, ... -
Increased microvascular permeability in mice lacking Epac1 (Rapgef3)
Kopperud, Reidun Kristin; Rygh, Cecilie Brekke; Karlsen, Tine Veronica; Krakstad, Camilla; Kleppe, Rune; Høivik, Erling Andre; Bakke, Marit; Tenstad, Olav; Selheim, Frode; Liden, Åsa; Madsen, Lise; Pavlin, Tina; Taxt, Torfinn; Kristiansen, K.; Curry, FE; Reed, Rolf K.; Doskeland, Stein Ove (Peer reviewed; Journal article, 2017-02)Aim: Maintenance of the blood and extracellular volume requires tight control of endothelial macromolecule permeability, which is regulated by cAMP signalling. This study probes the role of the cAMP mediators rap guanine ... -
Iodinin (1,6-dihydroxyphenazine 5,10-dioxide) from Streptosporangium sp. induces apoptosis selectively in myeloid leukemia cell lines and patient cells
Myhren, Lene Elisabeth; Nygård, Gyrid; Gausdal, Gro; Sletta, Håvard; Teigen, Knut; Degnes, Kristin Fløgstad; Zahlsen, Kolbjørn; Brunsvik, Anders; Bruserud, Øystein; Døskeland, Stein Ove; Selheim, Frode; Herfindal, Lars (Peer reviewed; Journal article, 2013-01-30)Despite recent improvement in therapy, acute myeloid leukemia (AML) is still associated with high lethality. In the presented study, we analyzed the bioactive compound iodinin (1,6-dihydroxyphenazine 5,10-dioxide) from a ... -
Marine Benthic Cyanobacteria Contain Apoptosis-Inducing Activity Synergizing with Daunorubicin to Kill Leukemia Cells, but not Cardiomyocytes
Oftedal, Linn Silje Wathne; Selheim, Frode; Wahlsten, Matti; Sivonen, Kaarina; Døskeland, Stein Ove; Herfindal, Lars (Peer reviewed; Journal article, 2010-10-14)The potential of marine benthic cyanobacteria as a source of anticancer drug candidates was assessed in a screen for induction of cell death (apoptosis) in acute myeloid leukemia (AML) cells. Of the 41 marine cyanobacterial ... -
Mathematical modelling of nitric oxide/cyclic GMP/cyclic AMP signalling in platelets
Kleppe, Rune; Jonassen, Inge; Doskeland, Stein Ove; Selheim, Frode (Peer reviewed; Journal article, 2018-02-19)Platelet activation contributes to normal haemostasis but also to pathologic conditions like stroke and cardiac infarction. Signalling by cGMP and cAMP inhibit platelet activation and are therefore attractive targets for ... -
Mice depleted for Exchange Proteins Directly Activated by cAMP (Epac) exhibit irregular liver regeneration in response to partial hepatectomy
Åsrud, Kathrine Sivertsen; Pedersen, Line; Aesoy, Reidun; Muwonge, Haruna; Aasebø, Elise; Pettersen, Ina Katrine Nitschke; Herfindal, Lars; Dobie, Ross; Jenkins, Stephen; Berge, Rolf Kristian; Henderson, Neil Cowan; Selheim, Frode; Doskeland, Stein Ove; Bakke, Marit (Peer reviewed; Journal article, 2019-09-24)The exchange proteins directly activated by cAMP 1 and 2 (Epac1 and Epac2) are expressed in a cell specific manner in the liver, but their biological functions in this tissue are poorly understood. The current study was ... -
An overview on G protein-coupled receptor-induced signal transduction in acute myeloid leukemia
Selheim, Frode; Aasebø, Elise; Ribas, Catalina; Aragay, Anna M. (Peer reviewed; Journal article, 2019)Background: Acute Myeloid Leukemia (AML) is a genetically heterogeneous disease characterized by uncontrolled proliferation of precursor myeloid-lineage cells in the bone marrow. AML is also characterized by patients with ... -
Practical considerations for omics experiments in biomedical sciences
Vaudel, Marc; Barsnes, Harald; Bjerkvig, Rolf; Bikfalvi, Andreas; Selheim, Frode; Berven, Frode; Daubon, Thomas (Peer reviewed; Journal article, 2016)Modern analytical techniques provide an unprecedented insight to biomedical samples, allowing an in depth characterization of cells or body fluids, to the level of genes, transcripts, peptides, proteins, metabolites, or ... -
Protein expression profiling of plasma and lungs at different stages of metastatic development in a human triple negative breast cancer xenograft model.
TVEITARÅS, MK; Selheim, Frode; Sortland, Kristina; Salvesen, Gerd Signe; Reed, Rolf K.; Stuhr, Linda Elin Birkhaug (Peer reviewed; Journal article, 2019-05-01)The main objective of this study was to identify single proteins or protein networks that might be used as diagnostic biomarkers or for therapeutic purposes by evaluating the protein expression profiling of plasma and lungs ... -
Proteomic Profiling of Primary Human Acute Myeloid Leukemia Cells Does Not Reflect Their Constitutive Release of Soluble Mediators
Aasebø, Elise; Hernandez-Valladares, Maria; Selheim, Frode; Berven, Frode; Brenner, Annette; Bruserud, Øystein (Peer reviewed; Journal article, 2018-12-20)Acute myeloid leukemia (AML) is a heterogeneous disease, and communication between leukemic cells and their neighboring leukemia-supporting normal cells is involved in leukemogenesis. The bone marrow cytokine network is ... -
Reliable FASP-based procedures for optimal quantitative proteomic and phosphoproteomic analysis on samples from acute myeloid leukemia patients
Hernandez-Valladares, Maria; Aasebø, Elise; Mjaavatten, Olav; Vaudel, Marc; Bruserud, Øystein; Berven, Frode; Selheim, Frode (Peer reviewed; Journal article, 2016-06-21)Background Satisfactory sample preparation for mass spectrometry-based analysis is a critical step in the proteomics workflow. The quality and reproducibility of sample preparation can determine the coverage and confidence ... -
Targeted and Immune-Based Therapies for Acute Myeloid Leukemia: Inflammatory Signaling and Multiple Post-Translational Modifications
Selheim, Frode (Journal article, 2019)