• Drug-screening and genomic analyses of HER2-positive breast cancer cell lines reveal predictors for treatment response 

      Jernström, Sandra Johanna; Hongisto, Vesa; Leivonen, Suvi-Katri; Due, Eldri Undlien; Tadele, Dagim Shiferaw; Edgren, Henrik; Kallioniemi, Olli; Perälä, Merja; Mælandsmo, Gunhild; Sahlberg, Kristine Kleivi (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-03-21)
      Background<br> Approximately 15%–20% of all diagnosed breast cancers are characterized by amplified and overexpressed HER2 (= ErbB2). These breast cancers are aggressive and have a poor prognosis. Although improvements in treatment have been achieved after the introduction of trastuzumab and lapatinib, many patients do not benefit from these drugs. Therefore, in-depth understanding of the mechanisms ...
    • LIMT is a novel metastasis inhibiting lncRNA suppressed by EGF and downregulated in aggressive breast cancer 

      Sas-Chen, Aldema; Aure, Miriam Ragle; Leibovich, Limor; Carvalho, Silvia; Enuka, Yehoshua; Körner, Cindy; Polycarpou-Schwarz, Maria; Lavi, Sara; Nevo, Nava; Kuznetsov, Yuri; Yuan, Justin; Azuaje, Francisco; Ulitsky, Igor; Diederichs, Sven; Wiemann, Stefan; Yakhini, Zohar; Kristensen, Vessela N.; Børresen-Dale, Anne-Lise; Yarden, Yosef; Sauer, Torill; Geisler, Jürgen; Hofvind, Solveig; Bathen, Tone Frost; Borgen, Elin; Engebråten, Olav; Fodstad, Øystein; Garred, Øystein; Geitvik, Gry; Kåresen, Rolf; Naume, Bjørn; Mælandsmo, Gunhild; Russnes, Hege Elisabeth Giercksky; Schlichting, Ellen; Sørlie, Therese; Lingjærde, Ole Christian; Sahlberg, Kristine Kleivi; Skjerven, Helle; Fritzman, Britt (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-09-01)
      Long noncoding RNAs (lncRNAs) are emerging as regulators of gene expression in pathogenesis, including cancer. Recently, lncRNAs have been implicated in progression of specific subtypes of breast cancer. One aggressive, basal-like subtype associates with increased EGFR signaling, while another, the HER2-enriched subtype, engages a kin of EGFR Based on the premise that EGFR-regulated lncRNAs might ...
    • MicroRNA in combination with HER2-targeting drugs reduces breast cancer cell viability in vitro 

      Svartdal, Lisa Gregusson; Aure, Miriam Ragle; Leivonen, Suvi-Katri; Haugen, Mads Haugland; Hongisto, Vesa; Kristensen, Vessela N.; Mælandsmo, Gunhild Mari; Sahlberg, Kristine Kleivi (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-05-25)
      HER2-positive (HER2 +) breast cancer patients that do not respond to targeted treatment have a poor prognosis. The effects of targeted treatment on endogenous microRNA (miRNA) expression levels are unclear. We report that responsive HER2 + breast cancer cell lines had a higher number of miRNAs with altered expression after treatment with trastuzumab and lapatinib compared to poorly responsive cell ...
    • miR-101-5p Acts as a Tumor Suppressor in HER2-Positive Breast Cancer Cells and Improves Targeted Therapy 

      Normann, Lisa Svartdal; Haugen, Mads Haugland; Aure, Miriam Ragle; Kristensen, Vessela N.; Mælandsmo, Gunhild Mari; Sahlberg, Kristine Kleivi (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-03-01)
      Purpose: Human epidermal growth factor receptor 2 positive (HER2+) breast cancers responding poorly to targeted therapy need improved treatment options. miR-101-5p has shown tumor-suppressive properties in multiple cancer forms, and we assessed the effect and mechanism of action of this miRNA in HER2+ breast cancer.<p> <p>Methods: Expression levels of miR-101-5p in two clinical datasets, TCGA and ...
    • Treatment of ductal carcinoma in situ: a register-based study of Norwegian women diagnosed between 1995 and 2018 

      Skjerven, Helle; Danielsen, Anders Skyrud; Schlichting, Ellen; Sahlberg, Kristine Kleivi; Hofvind, Solveig Sand-Hanssen (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-04-21)
      Introduction: The incidence of ductal carcinoma in situ (DCIS) has increased after implementation of mammographic screening. The lesion represents management challenges due to its undetermined growth pattern. We aimed to explore treatment of women aged 48-71 diagnosed with DCIS between 1995 and 2018, by detection mode and histopathological characteristics. Material and methods: Data on surgical ...