Kolegium Nauk Przyrodniczych / College of Natural Sciences

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Browsing Kolegium Nauk Przyrodniczych / College of Natural Sciences by Author "Adamczyk-Grochala, Jagoda"

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    Dataset used in research paper entitled "Evaluation of anticancer activity of urotropine surface modified iron oxide nanoparticles using a panel of forty breast cancer cell lines "
    (Taylor & Francis, 2025-02-28) Adamczyk-Grochala, Jagoda; Wnuk, Maciej; Oklejewicz, Bernadetta; Klimczak, Katarzyna; Błoniarz, Dominika; Deręgowska, Anna; Rzeszutek, Iwona; Stec, Paulina; Ciuraszkiewicz, Agnieszka; Kądziołka-Gaweł, Mariola; Łukowiec, Dariusz; Piotrowski, Piotr; Litwinienko, Grzegorz; Radoń, Adrian; Lewińska, Anna
    Urotropine, an antibacterial agent to treat urinary tract bacterial infections, can be also considered as a repurposed drug with formaldehyde-mediated anticancer activity. Recently, we have synthesized urotropine surface modified iron oxide nanoparticles (URO@Fe3O4 NPs) with improved colloidal stability and limited cytotoxicity against human fibroblasts. In the present study, we have investigated URO@Fe3O4 NP-mediated responses in a panel of forty phenotypically different breast cancer cell lines along with three non-cancerous corresponding cell lines. URO@Fe3O4 NPs promoted oxidative stress and FOXO3a-based antioxidant response in breast cancer cells. Elevated levels of GPX4 and decreased levels of ACSL4 in URO@Fe3O4 NP-treated breast cancer cells protected against ferroptotic cell death. On the contrary, URO@Fe3O4 NPs impaired the activity of PERK, a part of unfolded protein response (UPR), especially when the glucose supply was limited, that was accompanied by genetic instability, and apoptotic and/or necrotic cell death in breast cancer cells. In conclusion, this is the first comprehensive analysis of anticancer effects of URO@Fe3O4 NPs against a panel of forty breast cancer cell lines with different receptor status and in glucose replete and deplete conditions. We suggest that presented results might be helpful for designing new nano-based anti-breast cancer strategies.
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    Upregulation of GRP78 is accompanied by decreased antioxidant response and mitophagy promotion in streptozotocin-induced type 1 diabetes in rats - original data
    (Biochimica et Biophysica Acta (BBA) - Molecular Basis of Disease, 2024-09-25) Kaniuka, Olena; Deręgowska, Anna; Bandura, Yurii; Sabadashka, Mariya; Chala, Dariya; Kulachkovskyi, Olexandr; Kubis, Hubert; Adamczyk-Grochala, Jagoda; Sybirna, Nataliia
    Endoplasmic reticulum stress, oxidative stress, and mitochondrial dysfunction are interconnected processes involved in the pathogenesis of diabetes mellitus (DM). In the present study, we demonstrate a distinct unfolded protein response (UPR) signaling pathways in two mammalian models of DM: β-TC-6 cell line and streptozotocin induced type 1 diabetes model in rats. However, a feature common to both systems was the upregulation of the GRP78 protein. Moreover, in vivo studies showed the disruption of the antioxidant system and an escalation of mitophagy against the background of a depletion of the level of ATP in pancreatic cells. In conclusion, we suggest that glucotoxic conditions induced GRP78 upregulation, and next cause depletion of the antioxidant pool and disruption of the functioning of antioxidant defense enzymes and in consequence promote mitophagy in pancreatic cells. Therefore, GRP78 may be considered as a potential therapeutic factor in patients with diabetes.