Blar i Department of Biomedicine på forfatter "Gjertsen, Bjørn Tore"
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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, ... -
Camptothecin and khat (Catha edulis Forsk.) induced distinct cell death phenotypes involving modulation of c-FLIPL, Mcl-1, procaspase-8 and mitochondrial function in acute myeloid leukemia cell lines
Bredholt, Therese; Dimba, Elizabeth A. O.; Hagland, Hanne; Wergeland, Line; Skavland, Jørn; Fossan, Kjell Ove; Tronstad, Karl Johan; Johannessen, Anne Christine; Vintermyr, Olav Karsten; Gjertsen, Bjørn Tore (Peer reviewed; Journal article, 2009-11-13)Background: An organic extract of the recreational herb khat (Catha edulis Forsk.) triggers cell death in various leukemia cell lines in vitro. The chemotherapeutics camptothecin, a plant alkaloid topoisomerase I inhibitor, ... -
Cerebrospinal fluid proteome shows disrupted neuronal development in multiple sclerosis
Mosleth, Ellen Færgestad; Vedeler, Christian Alexander; Liland, Kristian Hovde; McLeod, Anette; Bringeland, Gerd Haga; Kroondijk, Liesbeth; Berven, Frode Steingrimsen; Lysenko, Artem; Rawlings, Christopher J.; El-Hajj Eid, Karim; Opsahl, Jill Anette; Gjertsen, Bjørn Tore; Myhr, Kjell-Morten; Gavasso, Sonia (Journal article; Peer reviewed, 2021-02-18)Despite intensive research, the aetiology of multiple sclerosis (MS) remains unknown. Cerebrospinal fluid proteomics has the potential to reveal mechanisms of MS pathogenesis, but analyses must account for disease ... -
Cyclic AMP can promote APL progression and protect myeloid leukemia cells against anthracycline-induced apoptosis
Gausdal, Gro; Wergeland, Anita; Skavland, Jørn; Nguyen, Eric; Pendino, Frédéric; Rouhee, Nazanin; McCormack, Emmet; Herfindal, Lars; Kleppe, Rune; Havemann, Ursula; Schwede, Frank; Bruserud, Øystein; Gjertsen, Bjørn Tore; Lanotte, Michel; Ségal-Bendirdjian, Evelyne; Døskeland, Stein Ove (Peer reviewed; Journal article, 2013)We show that cyclic AMP (cAMP) elevating agents protect blasts from patients with acute promyelocytic leukemia (APL) against death induced by first-line anti-leukemic anthracyclines like daunorubicin (DNR). The cAMP effect ... -
Functional p53 is required for rapid restoration of daunorubicin-induced lesions of the spleen
Herfindal, Lars; Myhren, Lene Elisabeth; Gjertsen, Bjørn Tore; Døskeland, Stein Ove; Gausdal, Gro (Peer reviewed; Journal article, 2013-07-11)Background: The tumour suppressor and transcription factor p53 is a major determinant of the therapeutic response to anthracyclines. In healthy tissue, p53 is also considered pivotal for side effects of anthracycline ... -
Increased plasma colloid osmotic pressure facilitates the uptake of therapeutic macromolecules in a xenograft tumour model
Hofmann, Matthias; McCormack, Emmet; Mujic, Maja; Roßberg, Maila; Bernd, August; Bereiter-Hahn, Jürgen; Gjertsen, Bjørn Tore; Wiig, Helge; Kippenberger, Stefan (Peer reviewed; Journal article, 2009-08)Elevated tumor interstitial fluid pressure (TIFP) is a characteristic of most solid tumors. Clinically, TIFP may hamper the uptake of chemotherapeutic drugs into the tumor tissue reducing their therapeutic efficacy. In ... -
Pretreatment of glioblastoma with bortezomib potentiates natural killer cell cytotoxicity through TRAIL/DR5 mediated apoptosis and prolongs animal survival
Gras Navarro, Andrea; Espedal, Heidi; Vareecal Joseph, Justin; Moncho, Laura Trachsel; Bahador, Marzieh; Gjertsen, Bjørn Tore; Kristoffersen, Einar Klæboe; Simonsen, Anne; Miletic, Hrvoje; Enger, Per Øyvind; Rahman, Mohummad Aminur; Enger, Martha Chekenya (Peer reviewed; Journal article, 2019-07-17)Background: Natural killer (NK) cells are potential effectors in anti-cancer immunotherapy; however only a subset potently kills cancer cells. Here, we examined whether pretreatment of glioblastoma (GBM) with the proteasome ...