Browsing NTNU Open by Author "Liabakk, Nina-Beate"
Now showing items 1-16 of 16
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AID expression in B-cell lymphomas causes accumulation of genomic uracil and a distinct AID mutational signature
Pettersen, Henrik Sahlin; Galashevskaya, Anastasia; Doseth, Berit; Sousa, Mirta; Sarno, Antonio; Visnes, Torkild; Aas, Per Arne; Liabakk, Nina-Beate; Slupphaug, Geir; Sætrom, Pål; Kavli, Bodil Merete; Krokan, Hans Einar (Journal article; Peer reviewed, 2014)tThe most common mutations in cancer are C to T transitions, but their origin has remained elusive.Recently, mutational signatures of APOBEC-family cytosine deaminases were identified in many com-mon cancers, suggesting ... -
An inverse switch in DNA base excision and strand break repair contributes to melphalan resistance in multiple myeloma cells
Sousa, Mirta; Zub, Kamila Anna; Aas, Per Arne; Hanssen-Bauer, Audun; Demirovic, Aida; Sarno, Antonio; Tian, Erming; Liabakk, Nina-Beate; Slupphaug, Geir (Journal article; Peer reviewed, 2013)Alterations in checkpoint and DNA repair pathways may provide adaptive mechanisms contributing to acquired drug resistance. Here, we investigated the levels of proteins mediating DNA damage signaling and -repair in RPMI8226 ... -
APIM-peptide targeting PCNA improves the efficacy of docetaxel treatment in the TRAMP mouse model of prostate cancer
Søgaard, Caroline Danielsen; Moestue, Siver Andreas; Rye, Morten Beck; Kim, Jana; Nepal, Anala; Liabakk, Nina-Beate; Bachke, Siri; Bathen, Tone Frost; Otterlei, Marit; Hill, Deborah Katherine (Journal article; Peer reviewed, 2018)Docetaxel is the chemotherapeutic choice for metastatic hormone-refractory prostate cancer, however, it only marginally improves the survival rate. The purpose of the present study was to examine if a peptide ... -
Generation of a Mouse Model Lacking the Non-Homologous End-Joining Factor Mri/Cyren
Castaneda Zegarra, Sergio Miguel; Huse, Camilla; Røsand, Øystein; Sarno, Antonio; Xing, Mengtan; Zhang, Qindong; Alirezaylavasani, Amin; Werner, Julia; Ji, Ping; Liabakk, Nina-Beate; Wang, Wei; Bjørås, Magnar; Oksenych, Valentyn (Journal article; Peer reviewed, 2019)Classical non-homologous end joining (NHEJ) is a molecular pathway that detects, processes, and ligates DNA double-strand breaks (DSBs) throughout the cell cycle. Mutations in several NHEJ genes result in neurological ... -
HDACi Mediate UNG2 Depletion, Dysregulated Genomic Uracil and Altered Expression of Oncoproteins and Tumor Suppressors in B- And T-cell Lines
Iveland, Tobias Solli; Hagen, Lars; Sharma, Animesh; Sousa, Mirta; Sarno, Antonio; Kristian Lied, Wollen; Liabakk, Nina-Beate; Slupphaug, Geir (Peer reviewed; Journal article, 2020)Background HDAC inhibitors (HDACi) belong to a new group of chemotherapeutics that are increasingly used in the treatment of lymphocyte-derived malignancies, but their mechanisms of action remain poorly understood. Here ... -
Increased p53 signaling impairs neural differentiation in HUWE1-promoted intellectual disabilities
Aprigliano, Rossana; Aksu, Merdane Ezgi; Bradamante, Stefano; Mihaljevic, Boris; Wang, Wei; Rian, Kristin; Montaldo, Nicola Pietro; Grooms, Kayla; Martin, Sarah; Bordin, Diana Lilian; Bosshard, Matthias; Peng, Yunhui; Alexov, Emil; Skinner, Cindy; Liabakk, Nina-Beate; Sullivan, Gareth; Bjørås, Magnar; Schwartz, Charles; van Loon, Barbara (Peer reviewed; Journal article, 2021)Essential E3 ubiquitin ligase HUWE1 (HECT, UBA, and WWE domain containing 1) regulates key factors, such as p53. Although mutations in HUWE1 cause heterogenous neurodevelopmental X-linked intellectual disabilities (XLIDs), ... -
Joint changes in RNA, RNA polymerase II, and promoter activity through the cell cycle identify non-coding RNAs involved in proliferation
Hegre, Siv Anita; Samdal, Helle; Klima, Antonin; Stovner, Endre Bakken; Nørsett, Kristin Gabestad; Liabakk, Nina-Beate; Olsen, Lene Christin; Chawla, Konika; Aas, Per Arne; Sætrom, Pål (Peer reviewed; Journal article, 2021)Proper regulation of the cell cycle is necessary for normal growth and development of all organisms. Conversely, altered cell cycle regulation often underlies proliferative diseases such as cancer. Long non-coding RNAs ... -
Loss of Mediator complex subunit 13 (MED13) promotes resistance to alkylation through cyclin D1 upregulation
Rolinski, Milosz; Montaldo, Nicola Pietro; Aksu, Merdane Ezgi; Martin, Sarah Fordyce; Brambilla, Alessandro; Kunath, Nicolas; Johansen, Jostein; Erlandsen, Sten Even; Liabakk, Nina-Beate; Rian, Kristin; Bjørås, Magnar; Sætrom, Pål; van Loon, Barbara (Peer reviewed; Journal article, 2020)Alkylating drugs are among the most often used chemotherapeutics. While cancer cells frequently develop resistance to alkylation treatments, detailed understanding of mechanisms that lead to the resistance is limited. Here, ... -
MicroRNAs contribute to postnatal development of laminar differences and neuronal subtypes in the rat medial entorhinal cortex
Olsen, Lene Christin; O'Reilly, Kally; Liabakk, Nina-Beate; Witter, Menno; Sætrom, Pål (Journal article; Peer reviewed, 2017)The medial entorhinal cortex (MEC) is important in spatial navigation and memory formation and its layers have distinct neuronal subtypes, connectivity, spatial properties, and disease susceptibility. As little is known ... -
Nucleotide excision repair is associated with the replisome and its efficiency depends on a direct interaction between XPA and PCNA
Gilljam, Karin Margaretha; Müller, Rebekka; Liabakk, Nina-Beate; Otterlei, Marit (Journal article; Peer reviewed, 2012)Proliferating cell nuclear antigen (PCNA) is an essential protein for DNA replication, DNA repair, cell cycle regulation, chromatin remodeling, and epigenetics. Many proteins interact with PCNA through the PCNA interacting ... -
Robust DNA repair in PAXX-deficient mammalian cells
Dewan, Alisa Elinsdatter; Xing, Mengtan; Lundbæk, Marie Benner; Gago-Fuentes, Raquel; Beck, Carole; Aas, Per Arne; Liabakk, Nina-Beate; Sæterstad, Siri; Khac Thanh Phong, Chau; Kavli, Bodil Merete; Oksenych, Valentyn (Journal article; Peer reviewed, 2018)To ensure genome stability, mammalian cells employ several DNA repair pathways. Nonhomologous DNA end joining (NHEJ) is the DNA repair process that fixes double-strand breaks throughout the cell cycle. NHEJ is involved in ... -
RPA2 winged-helix domain facilitates UNG-mediated removal of uracil from ssDNA; implications for repair of mutagenic uracil at the replication fork
Kavli, Bodil Merete; Iveland, Tobias Solli; Buchinger, Edith; Hagen, Lars; Liabakk, Nina-Beate; Aas, Per Arne; Obermann, Tobias Sebastian; Aachmann, Finn Lillelund; Slupphaug, Geir (Journal article; Peer reviewed, 2021)Uracil occurs at replication forks via misincorporation of deoxyuridine monophosphate (dUMP) or via deamination of existing cytosines, which occurs 2-3 orders of magnitude faster in ssDNA than in dsDNA and is 100% miscoding. ... -
Targeting the non-canonical roles of PCNA modifies and increases the response to targeted anti-cancer therapy
Søgaard, Caroline Krogh; Nepal, Anala; Petrovic, Voin; Sharma, Animesh; Liabakk, Nina-Beate; Steigedal, Tonje S.; Otterlei, Marit (Journal article, 2019)Receptor tyrosine kinases (RTKs), such as HER2 and/or EGFR are important therapeutic targets in multiple cancer cells. Low and/or short response to targeted therapies are often due to activation of compensatory signaling ... -
The proportion of CD16+CD14dim monocytes increases with tumor cell load in bone marrow of patients with multiple myeloma
Sponaas, Anne-Marit; Moen, Siv Helen; Liabakk, Nina-Beate; Feyzi, Emadoldin; Holien, Toril; Kvam, Solveig; Grøseth, Lill Anny Gunnes; Størdal, Berit Fladvad; Buene, Glenn; Espevik, Terje; Waage, Anders; Standal, Therese; Sundan, Anders (Journal article; Peer reviewed, 2015)Multiple myeloma is an incurable cancer with expansion of malignant plasma cells in the bone marrow. Previous studies have shown that monocytes and macrophages in the bone marrow milieu are important for tumor growth ... -
"Two hits - one stone" increased efficacy of cisplatin-based therapies by targeting PCNA's role in both DNA repair and cellular signaling
Søgaard, Caroline Krogh; Blindheim, Augun; Røst, Lisa Marie; Petrovic, Voin; Nepal, Anala; Bachke, Siri; Liabakk, Nina-Beate; Gederaas, Odrun Arna; Viset, Trond; Arum, Carl-Jørgen; Bruheim, Per; Otterlei, Marit (Journal article; Peer reviewed, 2018)Low response rate and rapid development of resistance against commonly used chemotherapeutic regimes demand new multi-targeting anti-cancer strategies. In this study, we target the stress-related roles of the scaffold ... -
Uracil-DNA glycosylase UNG1 isoform variant supports class switch recombination and repairs nuclear genomic uracil
Sarno, Antonio; Lundbæk, Marie Benner; Liabakk, Nina-Beate; Aas, Per Arne; Mjelle, Robin; Hagen, Lars; Sousa, Mirta; Krokan, Hans Einar; Kavli, Bodil Merete (Journal article; Peer reviewed, 2019)UNG is the major uracil-DNA glycosylase in mammalian cells and is involved in both error-free base excision repair of genomic uracil and mutagenic uracil-processing at the antibody genes. However, the regulation of UNG in ...