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 ... -
The Constitutive Extracellular Protein Release by Acute Myeloid Leukemia Cells—A Proteomic Study of Patient Heterogeneity and Its Modulation by Mesenchymal Stromal Cells
Aasebø, Elise; Brenner, Annette; Birkeland, Even; Tvedt, Tor Henrik Anderson; Selheim, Frode; Berven, Frode Steingrimsen; Bruserud, Øystein (Journal article; Peer reviewed, 2021)Extracellular protein release is important both for the formation of extracellular matrix and for communication between cells. We investigated the extracellular protein release by in vitro cultured normal mesenchymal stem ... -
Effects of the Autophagy-Inhibiting Agent Chloroquine on Acute Myeloid Leukemia Cells; Characterization of Patient Heterogeneity
Grønningsæter, Ida Sofie; Reikvam, Håkon; Aasebø, Elise; Bartaula-Brevik, Sushma; Hernandez‐valladares, Maria; Selheim, Frode; Berven, Frode Steingrimsen; Tvedt, Tor Henrik; Bruserud, Øystein; Hatfield, Kimberley Joanne (Journal article; Peer reviewed, 2021)Autophagy is a highly conserved cellular degradation process that prevents cell damage and promotes cell survival, and clinical efforts have exploited autophagy inhibition as a therapeutic strategy in cancer. Chloroquine ... -
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, ... -
The extracellular bone marrow microenvironment — a proteomic comparison of constitutive protein release by in vitro cultured osteoblasts and mesenchymal stem cells
Aasebø, Elise; Birkeland, Even; Selheim, Frode; Berven, Frode; Brenner, Annette; Bruserud, Øystein (Journal article; Peer reviewed, 2021)Mesenchymal stem cells (MSCs) and osteoblasts are bone marrow stromal cells that contribute to the formation of stem cell niches and support normal hematopoiesis, leukemogenesis and development of metastases from distant ... -
The implementation of mass spectrometry-based proteomics workflows in clinical routines of acute myeloid leukemia: Applicability and perspectives
Hernandez-Valladares, Maria; Bruserud, Øystein; Selheim, Frode (Journal article; Peer reviewed, 2020)With the current reproducibility of proteome preparation workflows along with the speed and sensitivity of the mass spectrometers, the transition of the mass spectrometry (MS)-based proteomics technology from biomarker ... -
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 ... -
Mass Spectrometry-Based Proteomics Workflows in Cancer Research: The Relevance of Choosing the Right Steps
Carrillo Rodriguez, Paula; Selheim, Frode; Valladares, Maria del Carmen Hernandez (Journal article; Peer reviewed, 2023-01-16)The qualitative and quantitative evaluation of proteome changes that condition cancer development can be achieved with liquid chromatography–mass spectrometry (LC-MS). LC-MS-based proteomics strategies are carried out ... -
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; Æsøy, 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 ... -
Patient Heterogeneity in Acute Myeloid Leukemia: Leukemic Cell Communication by Release of Soluble Mediators and Its Effects on Mesenchymal Stem Cells
Aasebø, Elise; Brenner, Annette; Hernandez-Valladares, Maria; Birkeland, Even; Mjaavatten, Olav; Reikvam, Håkon; Selheim, Frode; Berven, Frode Steingrimsen; Bruserud, Øystein (Journal article; Peer reviewed, 2021)Acute myeloid leukemia (AML) is an aggressive bone marrow malignancy, and non-leukemic stromal cells (including mesenchymal stem cells, MSCs) are involved in leukemogenesis and show AML-supporting effects. We investigated ... -
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 ... -
The progression of acute myeloid leukemia from first diagnosis to chemoresistant relapse: A comparison of proteomic and phosphoproteomic profiles
Aasebø, Elise; Berven, Frode; Hovland, Randi; Doskeland, Stein Ove; Bruserud, Øystein; Selheim, Frode; Hernandez-Valladares, Maria (Journal article; Peer reviewed, 2020)Acute myeloid leukemia (AML) is an aggressive hematological malignancy. Nearly 50% of the patients who receive the most intensive treatment develop chemoresistant leukemia relapse. Although the leukemogenic events leading ... -
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 ... -
Proteome and Phosphoproteome Changes Associated with Prognosis in Acute Myeloid Leukemia
Aasebø, Elise; Berven, Frode; Bartaula-Brevik, Sushma; Stokowy, Tomasz; Hovland, Randi; Vaudel, Marc; Døskeland, Stein Ove; Mc Cormack, Emmet; Batth, Tanveer S; Olsen, Jesper V; Bruserud, Øystein; Selheim, Frode; Hernandez-Valladares, Maria (Journal article; Peer reviewed, 2020)Acute myeloid leukemia (AML) is a hematological cancer that mainly affects the elderly. Although complete remission (CR) is achieved for the majority of the patients after induction and consolidation therapies, nearly ... -
Proteomic Comparison of Bone Marrow Derived Osteoblasts and Mesenchymal Stem Cells
Aasebø, Elise; Brenner, Annette; Hernandez-Valladares, Maria; Birkeland, Even; Berven, Frode Steingrimsen; Selheim, Frode; Bruserud, Øystein (Journal article; Peer reviewed, 2021)Mesenchymal stem cells (MSCs) can differentiate into osteoblasts, and therapeutic targeting of these cells is considered both for malignant and non-malignant diseases. We analyzed global proteomic profiles for osteoblasts ...